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REJ09B0071-0400
The revision list can be viewed directly by clicking the title page. The revision list summarizes the locations of revisions and additions. Details should always be checked by referring to the relevant text.
16
H8S/2268Group, H8S/2264Group
Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series H8S/2268 H8S/2266 H8S/2265 H8S/2264 HD64F2268 HD64F2266 HD64F2265 HD6432264 HD6432264W H8S/2262 HD6432262 HD6432262W
Rev. 4.00 Revision Date: Mar 21, 2006
Keep safety first in your circuit designs!
1. Renesas Technology Corp. puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or property damage. Remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of nonflammable material or (iii) prevention against any malfunction or mishap.
Notes regarding these materials
1. These materials are intended as a reference to assist our customers in the selection of the Renesas Technology Corp. product best suited to the customer's application; they do not convey any license under any intellectual property rights, or any other rights, belonging to Renesas Technology Corp. or a third party. 2. Renesas Technology Corp. assumes no responsibility for any damage, or infringement of any thirdparty's rights, originating in the use of any product data, diagrams, charts, programs, algorithms, or circuit application examples contained in these materials. 3. All information contained in these materials, including product data, diagrams, charts, programs and algorithms represents information on products at the time of publication of these materials, and are subject to change by Renesas Technology Corp. without notice due to product improvements or other reasons. It is therefore recommended that customers contact Renesas Technology Corp. or an authorized Renesas Technology Corp. product distributor for the latest product information before purchasing a product listed herein. The information described here may contain technical inaccuracies or typographical errors. Renesas Technology Corp. assumes no responsibility for any damage, liability, or other loss rising from these inaccuracies or errors. Please also pay attention to information published by Renesas Technology Corp. by various means, including the Renesas Technology Corp. Semiconductor home page (http://www.renesas.com). 4. When using any or all of the information contained in these materials, including product data, diagrams, charts, programs, and algorithms, please be sure to evaluate all information as a total system before making a final decision on the applicability of the information and products. Renesas Technology Corp. assumes no responsibility for any damage, liability or other loss resulting from the information contained herein. 5. Renesas Technology Corp. semiconductors are not designed or manufactured for use in a device or system that is used under circumstances in which human life is potentially at stake. Please contact Renesas Technology Corp. or an authorized Renesas Technology Corp. product distributor when considering the use of a product contained herein for any specific purposes, such as apparatus or systems for transportation, vehicular, medical, aerospace, nuclear, or undersea repeater use. 6. The prior written approval of Renesas Technology Corp. is necessary to reprint or reproduce in whole or in part these materials. 7. If these products or technologies are subject to the Japanese export control restrictions, they must be exported under a license from the Japanese government and cannot be imported into a country other than the approved destination. Any diversion or reexport contrary to the export control laws and regulations of Japan and/or the country of destination is prohibited. 8. Please contact Renesas Technology Corp. for further details on these materials or the products contained therein.
Rev. 4.00 Mar 21, 2006 page ii of lxviii
General Precautions on Handling of Product
1. Treatment of NC Pins Note: Do not connect anything to the NC pins. The NC (not connected) pins are either not connected to any of the internal circuitry or are used as test pins or to reduce noise. If something is connected to the NC pins, the operation of the LSI is not guaranteed. 2. Treatment of Unused Input Pins Note: Fix all unused input pins to high or low level. Generally, the input pins of CMOS products are high-impedance input pins. If unused pins are in their open states, intermediate levels are induced by noise in the vicinity, a passthrough current flows internally, and a malfunction may occur. 3. Processing before Initialization Note: When power is first supplied, the product's state is undefined. The states of internal circuits are undefined until full power is supplied throughout the chip and a low level is input on the reset pin. During the period where the states are undefined, the register settings and the output state of each pin are also undefined. Design your system so that it does not malfunction because of processing while it is in this undefined state. For those products which have a reset function, reset the LSI immediately after the power supply has been turned on. 4. Prohibition of Access to Undefined or Reserved Addresses Note: Access to undefined or reserved addresses is prohibited. The undefined or reserved addresses may be used to expand functions, or test registers may have been be allocated to these addresses. Do not access these registers; the system's operation is not guaranteed if they are accessed.
Rev. 4.00 Mar 21, 2006 page iii of lxviii
Configuration of This Manual
This manual comprises the following items: 1. General Precautions on Handling of Product 2. Configuration of This Manual 3. Preface 4. Main Revisions in This Edition The list of revisions is a summary of points that have been revised or added to earlier versions. This does not include all of the revised contents. For details, see the actual locations in this manual. 5. Contents 6. Overview 7. Description of Functional Modules * * CPU and System-Control Modules On-Chip Peripheral Modules
The configuration of the functional description of each module differs according to the module. However, the generic style includes the following items: i) Feature ii) Input/Output Pin iii) Register Description iv) Operation v) Usage Note When designing an application system that includes this LSI, take notes into account. Each section includes notes in relation to the descriptions given, and usage notes are given, as required, as the final part of each section. 8. List of Registers 9. Electrical Characteristics 10. Appendix 11. Index
Rev. 4.00 Mar 21, 2006 page iv of lxviii
Preface
This LSI is a high-performance microcontroller (MCU) made up of the H8S/2000 CPU with an internal 32-bit configuration as its core, and the peripheral functions required to configure a system. A single-power flash memory (F-ZTATTM)* version and a masked-ROM version are available for this LSI's ROM. The F-ZTAT version provides flexibility as it can be reprogrammed in no time to cope with all situations from the early stages of mass production to full-scale mass production. This is particularly applicable to application devices with specifications that will most probably change. Note: * F-ZTAT is a trademark of Renesas Technology Corp. Target Users: This manual was written for users who will be using the H8S/2268 Group and H8S/2264 Group in the design of application systems. Target users are expected to understand the fundamentals of electrical circuits, logical circuits, and microcomputers. Objective: This manual was written to explain the hardware functions and electrical characteristics of the H8S/2268 Group and H8S/2264 Group to the target users. Refer to the H8S/2600 Series, H8S/2000 Series Programming Manual for a detailed description of the instruction set.
Notes on Reading This Manual: * In order to understand the overall functions of the chip Read the manual according to the contents. This manual can be roughly categorized into parts on the CPU, system control functions, peripheral functions and electrical characteristics. * In order to understand the details of the CPU's functions Read the H8S/2600 Series, H8S/2000 Series Programming Manual. * In order to understand the details of a register when its name is known Read the index that is the final part of the manual to find the page number of the entry on the register. The addresses, bits, and initial values of the registers are summarized in section 24, List of Registers. Examples: Register name: The following notation is used for cases when the same or a similar function, e.g. 16-bit timer pulse unit or serial communication, is implemented on more than one channel: XXX_N (XXX is the register name and N is the channel number) The MSB is on the left and the LSB is on the right.
Rev. 4.00 Mar 21, 2006 page v of lxviii
Bit order:
Number notation: Binary is B'xxxx, hexadecimal is H'xxxx, decimal is xxxx Signal notation: An overbar is added to a low-active signal: xxxx
List of On-Chip Peripheral Functions:
Group Name Product Name PC break controller (PBC) Data transfer controller (DTC) 16-bit timer pulse unit (TPU) 8-bit timer (TMR_0 to TMR_3) 8-bit reload timer (TMR_4) Watch dog timer (WDT) Serial communication interface (SCI) I C bus interface (IIC) A/D converter D/A converter LCD controller/driver DTMF generation circuit Ports External interrupts Interrupt priorities
2
H8S/2268 Group H8S/2268, H8S/2266, H8S/2265 x2 x1 x3 x4 x4 x2 x3 x2 x10 x2 40 SEG/4 COM x1 1, 3, 4, 7, 9, F, H, J to N 14 8 levels
H8S/2264 Group H8S/2264, H8S/2262 x2 x2 x2 x3 x1 (option) x10 40 SEG/4 COM 1, 3, 4, 7, 9, F, H, J to L 13
Related Manuals: The latest versions of all related manuals are available from our web site. Please ensure you have the latest versions of all documents you require. http://www.renesas.com/eng/ H8S/2268 Group, H8S/2264 Group manuals:
Document Title H8S/2268 Group, H8S/2264 Group Hardware Manual H8S/2600 Series, H8S/2000 Series Programming Manual Document No. This manual REJ09B0139
Rev. 4.00 Mar 21, 2006 page vi of lxviii
User's Manuals for Development Tools:
Document Title H8S, H8/300 Series C/C++ Compiler, Assembler, Optimized Linkage Editor Compiler Package Ver. 6.01 User's Manual H8S, H8/300 Series High-performance Embedded Workshop 3 Tutorial H8S, H8/300 Series High-performance Embedded Workshop 3 User's Manual High-performance Embedded Workshop V.4.00 User's Manual Document No. REJ10B0161 REJ10B0024 REJ10B0026 REJ10J0886
Application Notes:
Document Title H8S, H8/300 Series C/C++ Compiler Package Application Note Document No. REJ05B0464
Rev. 4.00 Mar 21, 2006 page vii of lxviii
Rev. 4.00 Mar 21, 2006 page viii of lxviii
Main Revisions in This Edition
Item All Page -- Revision (See Manual for Details) Masked ROM version of H8S/2268 Group (: H8S/2268, H8S/2266, and H8S/2265) deleted Packages amended H8S/2268 Group (Before) FP-100B (After) FP-100B, FP-100BV (Before) TFP-100B (After) TFP-100B, TFP-100BV H8S/2264 Group (Before) TFP-100G (After) TFP-100G, TFP-100GV (Before) TFP-100B (After) (Blank) 1.1 Features 1 * Various peripheral functions Description amended -- I C bus interface (IIC) (supported as an option by H8S/2264 Group.) 2 Compact package Notes *1 and *2 added 1 TQFP-100* Code*
2 2
Notes: 1. Supported only by the H8S/2268 Group. 2. Package codes ending in the letter V designate Pb-free product. 1.1 Internal Block Diagram Figure 1.1 Internal Block Diagram of H8S/2268 Group 1.4 Pin Functions Table 1.1 Pin Functions 7 Table 1.1 amended
Type Power supply Symbol V3 V2 V1 Pin NO. 85 86 87 I/O Input Function Power supply pins for the LCD controller/driver. With an internal power supply division resistor, these pins are normally left open. Power supply should be within the range of Vcc V1 V2 V3 1 Vss. When the triple step-up voltage circuit* is used, the V3 pin is used for the LCD input reference power supply.
3
Figure 1.1 amended (Before) IIC (2 channels) (option) (After) IIC (2 channels)
Rev. 4.00 Mar 21, 2006 page ix of lxviii
Item 1.4 Pin Functions Table 1.1 Pin Functions
Page 8
Revision (See Manual for Details) Table 1.1 amended
Type System control Symbol RES*2
2 STBY*
Pin NO. 59 61 66
I/O Input Input Input Input Input
Function Reset input pin. When this pin is low, the chip enters in the power-on reset state. When this pin is low, a transition is made to hardware standby mode. Enables/disables programming the flash memory. Nonmaskable interrupt pin. If this pin is not used, it should be fixed-high. These pins request a maskable interrupt.
FWE Interrupts NMI*
2
60 81 78 82 40 38 26 to 33 41 39 37 36 34 35 36 37 38 39 40 41 70 71 72 73 74 75 55
1 IRQ5* IRQ4 IRQ3 IRQ1 IRQ0
WKP7 to WKP0 16-bit timer- TCLKD*1 pulse unit TCLKC (TPU) TCLKB TCLKA TIOCA0*1 1 TIOCB0* 1 TIOCC0* 1 TIOCD0* TIOCA1 TIOCB1 TIOCA2 TIOCB2 8-bit timer TMO3*1 1 TMO2* TMO1 TMO0 TMCI23*1 TMCI01 1 TMCI4*
Input Input
These pins request a wakeup interrupt. This interrupt is maskable. These pins input an external clock.
Input/ Output
Pins for the TGRA_0 to TGRD_0 input capture input or output compare output, or PWM output.
Input/ Output Input/ Output Output
Pins for the TGRA_1 and TGRB_1 input capture input or output compare output, or PWM output. Pins for the TGRA_2 and TGRB_2 input capture input or output compare output, or PWM output. Compare-match output pins
Input
Pins for external clock input to the counter
TMRI23*1 74 TMRI01 75
Input
Counter reset input pins.
Rev. 4.00 Mar 21, 2006 page x of lxviii
Item 1.4 Pin Functions Table 1.1 Pin Functions
Page 9
Revision (See Manual for Details) Table 1.1 amended
Type Serial communication Interface (SCI)/smart card interface Symbol TxD2 TxD1 TxD0 RxD2 RxD1 RxD0 SCK2 SCK1 SCK0 1 SCL1* SCL0
1 SDA1* SDA0
Pin NO. 68 79 76 69 80 77 70 81 78 79 81 78 80 43 to 52 82 43 44 54
I/O Output
Function Data output pins
Input
Data input pins
Input/ Output Input/ Output Input/ Output Input Input Output Input
Clock input/output pins. SCK1 outputs NMOS push-pull. I C clock input/output pins. These pins drive bus. The output of SCL0 is NMOS open drain. I C data input/output pins. These pins drive bus. The output of SDA0 is NMOS open drain. Analog input pins Pin for input of an external trigger to start A/D conversion Analog output pins for the D/A converter * .
1 2 2
I C bus interface*3
2
A/D converter
AN9 to AN0 ADTRG
D/A converter*1 A/D converter, D/A 1 converter*
DA1 DA0 AVcc
Power supply pin for the A/D converter, D/A 1 1 converter* and DTMF generation circuit* . If none of the A/D converter, D/A converter*1 and 1 DTMF generation circuit* is used, connect this pin to the system power supply (+5 V). Ground pin for the A/D converter, D/A converter*1, and DTMF generator*1. Connect this pin to the system power supply (0 V). Reference voltage input pin for the A/D converter and D/A converter*1. If neither the A/D converter 1 nor D/A converter* is used, connect this pin to the system power supply (+5 V).
Function LCD segment output pins
AVss
42
Input
Vref
53
Input
10
Type LCD controller/ driver
Symbol
Pin NO.
I/O
SEG40 to 92 to 100, Output SEG 1 1 to 11, 13, 15 to 33 COM4 to COM1 C2*1 C1*1 88 to 91 83 84 55 Output -- Output
LCD common output pins Pins for the step-up voltage capacitor of the LCD drive power supply. DTMF signal output pin.
DTMF generation 1 circuit* I/O ports
TONED
P17 to P10 P35 to P30
41 to 34 81 to 76
Input/ Output Input/ Output
8-bit I/O pins 6-bit I/O pins P34 and P35 output NMOS push-pull.
Rev. 4.00 Mar 21, 2006 page xi of lxviii
Item 1.4 Pin Functions Table 1.1 Pin Functions
Page 11
Revision (See Manual for Details)
Type I/O ports Symbol
1 PM7* PM6*1 PM5*1 PM4*1 PM3*1 PM2*1 1 PM1* 1 PM0*
Pin NO. 100 1 2 3 4 5 6 7 92 to 99
I/O Input/ Output
Function 8-bit I/O pins
PN7 to 1 PN0*
Input/ Output
8-bit I/O pins
11
Notes 2 and 3 added Notes: 1. Supported only by the H8S/2268 Group. 2. Countermeasure against noise should be executed or may result in malfunction. 3. Supported as an option by H8S/2264 Group.
2.9.3 Bit Manipulation Instructions 2.9.4 Access Method for Registers with Write-Only Bits 5.1 Features Figure 5.1 Block Diagram of Interrupt Controller for H8S/2268 Group Figure 5.2 Block Diagram of Interrupt Controller for H8S/2264 Group 5.3.5 IRQ Status Register (ISR) 5.4.3 Interrupt Exception Handling Vector Table Table 5.2 Interrupt Sources, Vector Addresses, and Interrupt Priorities
49 to 51
2.9.3 replaced
51 to 53
2.9.4 added
68
Figure 5.1 amended (Before) IRQ (After) IRQ (Before) WKP (After) WKP
69
Figure 5.2 amended (Before) IRQ (After) IRQ (Before) WKP (After) WKP
77 87
Description amended (Before) IRQn (After) IRQn Table 5.2 amended (Before) IIC channel 0 (option) (After) IIC channel 0* 3 3 (Before) IIC channel 1* (option) (After) IIC channel 1*
4
88
Note 4 added Note: 4. Supported as an option by H8S/2264 Group.
Rev. 4.00 Mar 21, 2006 page xii of lxviii
Item
Page
Revision (See Manual for Details) 5.5.6 replaced
5.5.6 DTC Activation 98 to by Interrupt 100 (H8S/2268 Group Only) 5.6.1 Contention between Interrupt Generation and Disabling 6.3.4 Operation in Transitions to PowerDown Modes 8.3 Activation Sources 100
Description amended When an interrupt enable bit is cleared to 0 to disable interrupt requests, ...
107
Description amended * When the SLEEP instruction causes a transition to software standby mode or watch mode:
122
Description added (Before) ... DTCER bit is cleared. The activation source flag, in the case of RXI0, for example, is the RDRF flag of SCI_0. When an interrupt has ... (After) ... DTCER bit is cleared. Table 8.1 shows the relationship between the activation source and DTCER clearing. The activation source flag, in the case of RXI0, for example, is the RDRF flag in SCI_0. Since there are a number of DTC activation sources, transferring the last byte (or word) does not clear the flag of its activation source. Take appropriate steps at each interrupt processing. When an interrupt has...
Table 8.1 Activation Source and DTCER Clearing
122
Table 8.1 added
8.4 Location of 126 Register Information and DTC Vector Table Table 8.2 Interrupt Sources, Vector Addresses, and Corresponding DTCEs 8.8.2 On-Chip RAM 137
Table 8.2 amended (Before) IIC channel 0 (optional) (After) IIC channel 0 (Before) IIC channel 1 (optional) (After) IIC channel 1
Description added ... in on-chip RAM. When the DTC bit is used, the RAME bit in SYSCR should not be cleared to 0.
Rev. 4.00 Mar 21, 2006 page xiii of lxviii
Item Section 9 I/O Ports Table 9.1 H8S/2268 Group Port Functions (1)
Page 140
Revision (See Manual for Details) Table 9.1 amended
Port Port 1 Description Port and Other Functions Name Input/Output and Output Type Schmitt trigger input (IRQ1, IRQ0)
P17/TIOCB2/TCLKD General I/O port also functioning as TPU I/O P16/TIOCA2/IRQ1 pins and interrupt input P15/TIOCB1/TCLKC pins P14/TIOCA1/IRQ0 P13/TIOCD0/TCLKB P12/TIOCC0/TCLKA P11/TIOCB0 P10/TIOCA0
Port 3
General I/O port also functioning as SCI_0 and SCI_1 I/O pins, I2C bus interface I/O pins, and interrupt input pins
P35/SCK1/SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SDA0 P32/SCK0/SDA1/IRQ4 P31/RxD0 P30/TxD0
Specifiable of open drain output Schmitt trigger input (IRQ5, IRQ4) NMOS push-pull output (P35, P34, SCK1)
141
Port Port F
Description
Port and Other Functions Name /
Input/Output and Output Type Schmitt trigger input (IRQ3)
General I/O port also PF3/ functioning as interrupt input pins and an A/D converter input pins General I/O port also functioning as wakeup input pins and LCD segment output pins
Port J
PJ7/ WKP7/SEG8 PJ6/WKP6/SEG7 PJ5/WKP5/SEG6 PJ4/WKP4/SEG5 PJ3/WKP3/SEG4 PJ2/WKP2/SEG3 PJ1/WKP1/SEG2 PJ0/WKP0/SEG1
Built-in input pull-up MOS Schmitt trigger input (WKP7 to WKP0)
Table 9.1 H8S/2264 Group Port Functions (2)
143
Port Port 1
Description
Port and Other Functions Name
Input/Output and Output Type Schmitt trigger input (IRQ1, IRQ0)
General I/O port also P17/TIOCB2 functioning as TPU I/O P16/TIOCA2/IRQ1 pins and interrupt input P15/TIOCB1/TCLKC pins P14/TIOCA1/IRQ0 P13/TCLKB P12/TCLKA P11 P10
Port 3
General I/O port also functioning as SCI_0 2 and SCI_1 I/O pins, I C bus interface I/O pins, and interrupt input pins
P35/SCK1/SCL0 P34/RxD1/SDA0 P33/TxD1 P32/SCK0/IRQ4 P31/RxD0 P30/TxD0
Specifiable of open drain output Schmitt trigger input (IRQ4) NMOS push-pull output (P35, P34, SCK1)
Rev. 4.00 Mar 21, 2006 page xiv of lxviii
Item Section 9 I/O Ports Table 9.1 H8S/2264 Group Port Functions (2)
Page 144
Revision (See Manual for Details) Table 9.1 amended
Port Port F Description Port and Other Functions Name Input/Output and Output Type Schmitt trigger input (IRQ3)
General I/O port also PF3/ADTRG/IRQ3 functioning as interrupt input pins and an A/D converter input pins General I/O port also functioning as wakeup input pins and LCD segment output pins PJ7/ WKP7/SEG8 PJ6/WKP6/SEG7 PJ5/WKP5/SEG6 PJ4/WKP4/SEG5 PJ3/WKP3/SEG4 PJ2/WKP2/SEG3 PJ1/WKP1/SEG2 PJ0/WKP0/SEG1
Port J
Built-in input pull-up MOS Schmitt trigger input (WKP7 to WKP0)
9.2 Port 3
150
Description amended Port 3 is a 6-bit I/O port. The P34, P35, and SCK1 function as NMOS push-pull outputs. Port 3 has the following registers.
9.2.5 Pin Functions
153
Description amended As shown in figure 9.1, when the pins P34, P35, SCK1, SCL0, or SDA0 type open drain output is used, ... to this LSI.
Figure 9.1 Types of Open Drain Outputs
153
Figure 9.1 amended (a) Open drain output type for P34, P35, SCK1, SCL0, and SDA0 pins
153
Description and notes 1 to 3 added The NMOS push-pull outputs of the P34, P35, and SCK1 pins do not reach the voltage of Vcc, even when the pins are specified so that they are driven high and regardless of the load. To output the voltage of Vcc, a pull-up resistor must be externally connected. Notes: 1. When a pull-up resistor is externally connected, signals take longer to rise and fall. When the input signals take a long time to rise and fall, connect an input circuit that has a noise reduction function, such as a Schmitt trigger circuit. 2. For high-speed operation, use an external circuit such as a level shifter. 3. For output characteristics, see the entries for high output voltage for pins P34 and P35 in table 25.15, DC Characteristics (1). The value of the pull-up resistor should satisfy the specification in table 25.16, Permissible Output Currents.
10.3.5 Timer Status Register (TSR)
208
[Clearing condition] of TGFD amended When DTC is activated by TGID interrupt and the DISEL bit of MRB in DTC is 0 with the transfer counter other than 0 Rev. 4.00 Mar 21, 2006 page xv of lxviii
Item 10.3.5 Timer Status Register (TSR)
Page 209
Revision (See Manual for Details) [Clearing condition] of TGFC amended When DTC is activated by TGIC interrupt and the DISEL bit of MRB in DTC is 0 with the transfer counter other than 0
210
[Clearing condition] of TGFB amended 2 When DTC* is activated by TGIB interrupt and the DISEL bit of 2 MRB in DTC* is 0 with the transfer counter other than 0 [Clearing condition] of TGFA amended 2 When DTC* is activated by TGIA interrupt and the DISEL bit of 2 MRB in DTC* is 0 with the transfer counter other than 0 Description amended (Before) (channels 0 to 2, or 1 and 2) (After) (H8S/2268 Group: channels 0 to 2, H8S/2264 Group: channels 1 and 2) Figure 10.41 amended
210
10.3.6 Timer Counter 211 (TCNT) 10.9.2 Interrupt Signal Timing Figure 10.41 TCIV Interrupt Setting Timing 243
TCNT input clock TCNT (overflow) Overflow signal
H'FFFF
H'0000
TCFV flag
TCIV interrupt
10.10.11 Contention 253 between Overflow/Underflow and Counter Clearing Figure 10.53 Contention between Overflow and Counter Clearing
Figure 10.53 amended
TCNT input clock TCNT Counter clear signal TGF flag Prohibited H'FFFF H'0000
TCFV flag
Rev. 4.00 Mar 21, 2006 page xvi of lxviii
Item
Page
Revision (See Manual for Details) Figure 10.54 amended
TCNT write cycle T2 T1
10.10.12 Contention 254 between TCNT Write and Overflow/Underflow Figure 10.54 Contention between TCNT Write and Overflow
Address
TCNT address
Write signal
TCNT write data H'FFFF M
TCNT
TCFV flag
Prohibited
11.1.1 Features Figure 11.1 Block Diagram of 8-Bit Timer Module 11.3.5 Timer Control/Status Register (TCSR)
256
Figure 11.1 amended Internal clock* Note * added Note: * When a sub-clock is operating, will be SUB.
261
*
TCSR_0
[Clearing condition] of CMFB amended ... by the CMFB interrupt and the DISEL bit = 0 in MRB of the 2 DTC* with the transfer counter other than 0 [Clearing condition] of CMFA amended ... by the CMFA interrupt and the DISEL bit = 0 in MRB of the 2 DTC* with the transfer counter other than 0 263 * TCSR_1 and TCSR_3 [Clearing condition] of CMFB amended ... by the CMFB interrupt and the DISEL bit = 0 in MRB of the 2 DTC* with the transfer counter other than 0 [Clearing condition] of CMFA amended ... by the CMFA interrupt and the DISEL bit = 0 in MRB of the 2 DTC* with the transfer counter other than 0 264 * TCSR_2 [Clearing condition] of CMFB amended ... by the CMFB interrupt and the DISEL bit = 0 in MRB of the 2 DTC* with the transfer counter other than 0 [Clearing condition] of CMFA amended ... by the CMFA interrupt and the DISEL bit = 0 in MRB of the 2 DTC* with the transfer counter other than 0 Rev. 4.00 Mar 21, 2006 page xvii of lxviii
Item 11.8.5 Switching of Internal Clocks and TCNT Operation Table 11.4 Switching of Internal Clock and TCNT Operation
Page 276
Revision (See Manual for Details) Table 11.4 amended
Timing of Switchover by Means of CKS1 and No. CKS0 Bits TCNT Clock Operation 2 Switching from low to 2 high*
Clock before switchover Clock after switchover TCNT clock
TCNT
N
N
+ 1N + 2 CKS bit rewrite
12.1 Features Figure 12.1 Block Diagram of WDT_0
288
Figure 12.1 amended 1 Internal reset signal* Internal clock*
2
(Before) TSCR_0 (After) TCSR_0 Note *2 added Notes: 1. The type of internal reset ... 2. When a sub-clock is operating, will be SUB. Figure 12.2 Block Diagram of WDT_1 12.2.2 Timer Control/Status Register (TCSR) 288 290 Figure 12.2 amended (Before) TSCR_1 (After) TCSR_1 * TCSR_0 WT/IT description amended 0: Interval timer mode (interval timer interrupt (WOVI) is requested to CPU) 1: Watchdog timer mode (internal reset selectable) 291 * TCSR_1 WT/IT description amended 0: Interval timer mode (interval timer interrupt (WOVI) is requested to CPU) 1: Watchdog timer mode (internal reset or NMI interrupt is requested to CPU) RST/NMI description amended Selects either a power-on reset or the NMI interrupt request when TCNT overflows in watchdog timer mode. 0: NMI interrupt is requested. ...
Rev. 4.00 Mar 21, 2006 page xviii of lxviii
Item
Page
Revision (See Manual for Details) Description amended ... (WOVI) is generated each time the TCNT overflows. (The NMI interrupt request is not generated.) Therefore, an interrupt can be generated at intervals. 1 deleted from figure 12.5
12.3.2 Interval Timer 295 Mode
12.3.3 Timing of Setting Overflow (OVF) Figure 12.5 Timing of OVF Setting 12.3.4 Timing of Setting Watchdog Timer Overflow flag (WOVF) 12.5.1 Notes on Register Access
296
296
Description amended ... an internal is generated for the entire chip. (WOVI interrupt is not generated.) This timing is...
297 to 298
12.5.1 replaced
Rev. 4.00 Mar 21, 2006 page xix of lxviii
Item 13.3.5 Serial Mode Register (SMR)
Page 309
Revision (See Manual for Details) * Smart Card Interface Mode (When SMIF in SCMR Is 1)
Initial Value 0
GM description amended
Bit 7 Bit Name GM R/W R/W Description GSM Mode When this bit is set to 1, the SCI operates in GSM mode. In GSM mode, the timing of the TEND setting is advanced by 11.0 etu (Elementary Time Unit: the time for transfer of one bit), and clock output control mode addition is performed. For details, refer to section 13.7.8, Clock Output Control. 0: Normal smart card interface mode operation (initial value) * The TEND flag is generated 12.5 etu (11.5 etu in the block transfer mode) after the beginning of the start bit. * Clock output on/off control only 1: GSM mode operation in smart card interface mode * The TEND flag is generated 11.0 etu after the beginning of the start bit. * In addition to clock output on/off control, high/low fixed control is supported (set using SCR). 6 BLK 0 R/W When this bit is set to 1, the SCI operates in block transfer mode. For details on block transfer mode, refer to section 13.7.3, Block Transfer Mode. 0: Normal smart card interface mode operation (initial value) * Error signal transmission, detection, and automatic data retransmission are performed. * The TXI interrupt is generated by the TEND flag. * The TEND flag is set 12.5 etu (11.0 etu in the GSM mode) after transmission starts. 1: Operation in block transfer mode * Error signal transmission, detection, and automatic data retransmission are not performed. * The TXI interrupt is generated by the TDRE flag. * The TEND flag is set 11.5 etu (11.0 etu in the GSM mode) after transmission starts.
13.3.7 Serial Status Register (SSR)
316 to 318
Normal Serial Communication Interface Mode (When SMIF in SCMR Is 0) Note *2 added 1 2 R/(W)* DTC* Notes: 1. Only a 0 can be ... 2. This bit is cleared by DTC only when DISEL = 0 with the transfer counter other than 0.
Rev. 4.00 Mar 21, 2006 page xx of lxviii
Item 13.3.7 Serial Status Register (SSR)
Page 322
Revision (See Manual for Details) Smart Card Interface Mode (When SMIF in SCMR Is 1) TEND description amended
Bit 2 Bit Name TEND Initial Value 1 R/W R Description Transmit End This bit is set to 1 when no error signal has been sent back from the receiving end and the next transmit data is ready to be transferred to TDR. [Setting conditions] * * When the TE bit in SCR is 0 and the ERS bit is also 0 When the ERS bit is 0 and the TDRE bit is 1 after the specified interval following transmission of 1-byte data.
The timing of bit setting differs according to the register setting as follows: When GM = 0 and BLK = 0, 12.5 etu after transmission starts When GM = 0 and BLK = 1, 11.5 etu after transmission starts When GM = 1 and BLK = 0, 11.0 etu after transmission starts When GM = 1 and BLK = 1, 11.0 etu after transmission starts [Clearing conditions] * * When 0 is written to TDRE after reading TDRE = 1 When the DTC is activated by a TXI interrupt and transfers transmission data to TDR (H8S/2268 Group only)
13.3.8 Smart Card Mode Register (SCMR) 13.3.9 Bit Rate Register (BRR) Table 13.5 Maximum Bit Rate with External Clock Input (Asynchronous Mode) 13.3.9 Bit Rate Register (BRR) Table 13.8 Examples of Bit Rate for Various BRR Settings (Smart Card Interface Mode) (When n = 0 and S = 372)
323
Description amended (Before) ... Smart Card interface mode and its format. (After) ... Smart Card interface mode and transfer format.
329
Table 13.5 amended (Before) 327.68 (After) 32.768
331
Table 13.8 amended
Operating Frequency Bit Rate (bps) 6720 9600 5.00 N 0 0 Error (%) 0.01 30.00 7.00 N 1 0 Error (%) 30 1.99 7.1424 N 1 0 Error (%) 28.75 0.00 (MHz) 10.00 N 1 1 Error (%) 0.01 30 10.7136 N 1 1 Error (%) 7.14 25
Rev. 4.00 Mar 21, 2006 page xxi of lxviii
Item
Page
Revision (See Manual for Details) Description amended
M = | (0.5 - 1 ) - (L - 0.5) F - 2N
13.4.2 Receive Data 338 Sampling Timing and Reception Margin in Asynchronous Mode
| D - 0.5 | (1 + F) | x 100 [%]
N
... Formula (1) Where M: Reception margin (%) N: Ratio of bit rate to clock (N = 16) D: Clock duty (D = 0 to 1.0) L: Frame length (L = 9 to 12) F: Absolute value of clock rate deviation
13.4.4 SCI 340 Initialization (Asynchronous Mode) Figure 13.8 Sample SCI Initialization Flowchart 13.4.5 Serial Data 342 Transmission (Asynchronous Mode) Figure 13.10 Sample Serial Transmission Flowchart
Figure 13.8 amended
Set TE and RE bits* in SCR to 1, and set RIE, TIE, TEIE, and MPIE bits
[4]

Note: * Perform this set operation with the RxD pin in the 1 state. If the RE bit is set to 1 with the RxD pin in the 0 state, it may be misinterpreted as a start bit.
Figure 13.10 amended
Write transmit data to TDR and clear TDRE flag in SSR to 0 [3] Serial transmission continuation procedure: To continue serial transmission, read 1 from the TDRE flag to confirm that writing is possible, then write data to TDR, and then clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request, and data is written to TDR. (H8S/2268 Group only) [4] Break output at the end of serial transmission: To output a break in serial transmission, set DR for the port corresponding to the TxD pin to 0, clear DDR to 1, then clear the TE bit in SCR to 0. Note: * The case, in which the DTC automatically checks and clears the TDRE flag, occurs only when DISEL in DTC is 0 with the transfer counter not being 0. Therefore, the TDRE flag should be cleared by CPU when DISEL is 1, or when DISEL is 0 with the transfer counter being 0.
No All data transmitted? Yes [3] Read TEND flag in SSR
No TEND = 1 Yes No Break output? Yes Clear DR to 0 and set DDR to 1
[4]
Clear TE bit in SCR to 0
Rev. 4.00 Mar 21, 2006 page xxii of lxviii
Item
Page
Revision (See Manual for Details) Figure 13.12 amended
Read receive data in RDR, and clear RDRF flag in SSR to 0 [5] Serial reception continuation procedure: To continue serial reception, before the stop bit for the current frame is received, read the RDRF flag, read RDR, and clear the RDRF flag to 0. The RDRF flag is cleared automatically when DTC* is activated by an RXI interrupt and the RDR value is read. (H8S/2268 Group only) Note: * The case, in which the DTC automatically clears the RDRF flag, occurs only when DISEL in DTC is 0 with the transfer counter not being 0. Therefore, the RDRF flag should be cleared by CPU when DISEL is 1, or when DISEL is 0 with the transfer counter being 0.
13.4.6 Serial Data 345 Reception (Asynchronous Mode) Figure 13.12 Sample Serial Reception Flowchart (1)
No All data received? Yes Clear RE bit in SCR to 0 [5]
13.5.1 Multiprocessor Serial Data Transmission Figure 13.14 Sample Multiprocessor Serial Transmission Flowchart
349
Figure 13.14 amended
[3] Serial transmission continuation procedure: To continue serial transmission, be sure to read 1 from the TDRE flag to confirm that writing is possible, then write data to TDR, and then clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request, and data is written to TDR. (H8S/2268 Group only) [4] Break output at the end of serial transmission: To output a break in serial transmission, set the port DR to 0, clear DDR to 1, then clear the TE bit in SCR to 0. [4] Note: * The case, in which the DTC automatically clears the TDRE flag, occurs only when DISEL in DTC is 0 with the transfer counter not being 0. Therefore, the TDRE flag should be cleared by CPU when DISEL is 1, or when DISEL is 0 with the transfer counter being 0.
Clear TDRE flag to 0
No All data transmitted? Yes [3]
Read TEND flag in SSR
No TEND = 1 Yes No Break output? Yes
Clear DR to 0 and set DDR to 1
Clear TE bit in SCR to 0

Rev. 4.00 Mar 21, 2006 page xxiii of lxviii
Item 13.6.3 Serial Data Transmission (Clocked Synchronous Mode) Figure 13.20 Sample Serial Transmission Flowchart
Page 356
Revision (See Manual for Details) Figure 13.20 amended
Yes Write transmit data to TDR and clear TDRE flag in SSR to 0 [3] Serial transmission continuation procedure: To continue serial transmission, be sure to read 1 from the TDRE flag to confirm that writing is possible, then write data to TDR, and then clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request and data is written to TDR. (H8S/2268 Group only)
No All data transmitted? Yes [3]
Read TEND flag in SSR Note: * The case, in which the DTC automatically clears the TDRE flag, occurs only when DISEL in DTC is 0 with the transfer counter not being 0. Therefore, the TDRE flag should be cleared by CPU when DISEL is1, or when DISEL is 0 with the transfer counter being 0.
No TEND = 1 Yes Clear TE bit in SCR to 0
13.6.4 Serial Data Reception (Clocked Synchronous Mode) Figure 13.22 Sample Serial Reception Flowchart
358
Figure 13.22 amended
Yes Read receive data in RDR, and clear RDRF flag in SSR to 0 [5] Serial reception continuation procedure: To continue serial reception, before the final bit of the current frame is received, reading the RDRF flag, reading RDR, and clearing the RDRF flag to 0 should be finished. The RDRF flag is cleared automatically when the DTC* is activated by a receive data full interrupt (RXI) request and the RDR value is read. (H8S/2268 Group only)
No All data received? Yes Clear RE bit in SCR to 0 [5]
[3]
Error processing
Overrun error processing
Note: * The case, in which the DTC automatically clears the RDRF flag, occurs only when DISEL in DTC is 0 with the transfer counter not being 0. Therefore, the RDRF flag should be cleared by CPU when DISEL is 1, or when DISEL is 0 with the transfer counter being 0.
Clear ORER flag in SSR to 0
Rev. 4.00 Mar 21, 2006 page xxiv of lxviii
Item
Page
Revision (See Manual for Details) Figure 13.23 amended
No RDRF = 1 Yes Read receive data in RDR, and clear RDRF flag in SSR to 0
[5] Serial transmission/reception continuation procedure: To continue serial transmission/ reception, before the final bitof the current frame is received, finish reading the RDRF flag, reading RDR, and clearing the RDRF flag to 0. Also, before the final bit of the current frame is transmitted, read 1 from the TDRE flag to confirm that writing is possible. Then write data to TDR and clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request and data is written to TDR. Also, the RDRF flag is cleared automatically when the DTC* is activated by a receive data full interrupt (RXI) request and the RDR value is read. (H8S/2268
13.6.5 Simultaneous 360 Serial Data Transmission and Reception (Clocked Synchronous Mode) Figure 13.23 Sample Flowchart of Simultaneous Serial Transmit and Receive Operations
No All data received? Yes [5]
Clear TE and RE bits in SCR to 0

Group only)
Notes: When switching from transmit or receive operation to simultaneous transmit and receive operations, first clear the TE bit and RE bit to 0, then set both these bits to 1 by one instruction simultaneously. * The case, in which the DTC automatically clears the TDRE flag or RDRF flag, occurs only when DISEL in the corresponding DTC transfer is 0 with the transfer counter not being 0. Therefore, the corresponding flag should be cleared by CPU when DISEL in the corresponding DTC transfer is 1, or when DISEL is 0 with the transfer counter being 0.
13.7.1 Pin Connection Example Figure 13.24 Schematic Diagram of Smart Card Interface Pin Connections
361
Figure 13.24 amended (Before) Rx (port) (After) Px (port)
13.7.6 Serial Data 366 Transmission (Except for Block Transfer Mode)
Description added ... the transmit data will be carried out. At this moment, when the DISEL bit in DTC is 0 and the transfer counter is other than 0, the TDRE and TEND flags are automatically cleared to 0 when data is transferred by the DTC. When the DISEL bit in the corresponding DTC is 1, or both DISEL bit and the transfer counter are 0, flags are not cleared although transfer data is written to TDR by DTC. Consequently give the CPU an instruction of flag clear processing. In addition, in the event of error ...
Rev. 4.00 Mar 21, 2006 page xxv of lxviii
Item
Page
Revision (See Manual for Details) Description amended (Before) ...the receive data will be transferred. The RDRF flag is cleared to 0 automatically when data is transferred by the DTC. If an error ... (After) ... the receive data will be transferred. The RDRF flag is cleared to 0 automatically when the DISEL bit in DTC is 0 and the transfer counter is other than 0. When the DISEL bit in DTC is 1, or both the DISEL bit and the transfer counter are 0, flag is not cleared although the receive data is transferred by DTC. Consequently, give the CPU an instruction of flag clear processing. If an error ...
13.7.7 Serial Data 369 Reception (Except for Block Transfer Mode)
13.8.1 Interrupts in Normal Serial Communication Interface Mode 13.9.5 Restrictions on Use of DTC (H8S/2268 Group Only)
372
Note * added ... by the DTC* (H8S/2268 Group only) Note: * Flags are cleared only when the DISEL bit in DTC is 0 with the transfer counter other than 0.
375
Description added * ... data full interrupt (RXI). * The flags are automatically cleared to 0 by DTC during the data transfer only when the DISEL bit in DTC is 0 with the transfer counter other than 0. When the DISEL bit in the corresponding DTC is 1, or both the DISEL bit and the transfer counter are 0, give the CPU an Instruction to clear flags. Note that, particularly during transmission, the TDRE flag that is not cleared by the CPU causes incorrect transmission.
Section 14 I C Bus Interface (IIC) (Supported as an option by H8S/2264 Group)
2
381
Description amended An I C bus interface is available as an option in H8S/2264 Group. Description in note when using IIC option amended (Before) HD6432268WTE (After) HD6432264WTF Note 2. deleted from notes when using IIC option
2
14.1 Features
381
Description amended * Selection of I C bus format or clocked synchronous serial format
2
382
Description amended * Interrupt sources Address match: when ... slave receive mode Start condition detection (in master mode) Stop condition detection (in slave mode)
Rev. 4.00 Mar 21, 2006 page xxvi of lxviii
Item 14.3 Register Descriptions
Page 385
Revision (See Manual for Details) Note *2 added * I C bus data register_0 (ICDR_0)* 2 * Slave address register_0 (SAR_0)*
2 2
* Second slave address register_0 (SARX_0)* 2 2 * I C bus mode register_0 (ICMR_0)* * I C bus control register_0 (ICCR_0)* 2 2 * I C bus status register_0 (ICSR_0)*
2 2
2
2 12 * I C bus data register_1 (ICDR_1)* * 12 * Slave address register_1 (SAR_1)* * 12 * Second slave address register_1 (SARX_1)* * 2 12 * I C bus mode register_1 (ICMR_1)* * 2 12 * I C bus control register_1 (ICCR_1)* * 2 1 *2 * I C bus status register_1 (ICSR_1)*
* DDC switch register (DDCSWR) * Serial control register X (SCRX) Notes: 1. Supported only by the H8S/2268 Group. 2. Some of the registers in the I C bus interface are allocated to the same addresses of other registers. The IICE bit in serial control register X (SCRX) selects each register. 14.3.4 I C Bus Mode 391 Register (ICMR) Table 14.3 I C Transfer Rate 14.3.5 Serial Control 392 Register X (SCRX) IICX1 and IICX0 description amended ... Refer to table 14.3. IICX1 controls IIC_1 and IICX0 controls IIC_0. Note * amended Note: * In the H8S/2264 Group, this bit is reserved. The initial value should not be changed.
2 2 2
Table 14.3 amended 417kHz*
Rev. 4.00 Mar 21, 2006 page xxvii of lxviii
Item 14.3.6 I C Bus Control Register (ICCR)
2
Page 396
Revision (See Manual for Details) [Setting condition] of IRIC amended In I C bus format slave mode ... * When the general call address (one frame including a R/W bit is H'00) is detected ...
2
397
R/W of SCP amended (Before) R/W (After) W Description of SCP amended ... This bit is always read as 1. Data is not stored even if it is written.
14.3.7 I C Bus Status Register (ICSR)
2
399 400
[Clearing condition] of IRTR amended * When the IRIC flag is cleared to 0 while ICE is 1 AAS description amended
Bit 2 Bit Name AAS Initial Value 0 R/W Description R/(W)* Slave Address Recognition Flag [Setting condition] When the slave address or general call address (one frame including a R/W bit is H'00) is detected in slave receive mode and FS = 0. [Clearing conditions] * * * When ICDR data is written (transmit mode) or read (receive mode) When 0 is written in AAS after reading AAS = 1 In master mode
401
ADZ and ACKB description amended
Bit 1 Bit Name ADZ Initial Value 0 R/W Description In I2C bus format slave receive mode, this flag is set to 1 if the first frame following a start condition is the general call address (H'00). [Setting condition] When the general call address (one frame including a R/W bit is H'00) is detected in slave receive mode and FSX = 0 or FS = 0. [Clearing conditions] * * * When ICDR data is written (transmit mode) or read (receive mode) When 0 is written in ADZ after reading ADZ = 1 In master mode R/(W)* General Call Address Recognition Flag
If a general call address is detected while FS = 1 and FSX = 0, the ADZ flag is set to 1; however, the general call address is not recognized (AAS flag is not set to 1).
Rev. 4.00 Mar 21, 2006 page xxviii of lxviii
Item 14.3.7 I C Bus Status Register (ICSR)
2
Page 402
Revision (See Manual for Details) ADZ and ACKB description amended
Bit 0 Bit Name ACKB Initial Value 0 R/W R/W Description Acknowledge Bit Stores acknowledge data. Transmit mode: [Setting condition] When 1 is received as the acknowledge bit when ACKE = 1 in trasmit mode. [Clearing conditions] When 0 is received as the acknowledge bit when ACKE = 1 in transmit mode When 0 is written to the ACKE bit Receive mode: 0: Returns 0 as acknowledge data after data reception 1: Retruns 1 as acknowledge data after data reception When this bit is read, the value loaded from the bus line (returned by the receiving device) is read in transmission (when TRS = 1). In reception (when TRS = 0), the value set by internal software is read. When this bit is written, acknowledge data that is returned after receiving is written regardless of the TRS value. If bit in ICSR is written using bit-manipulation instructions, the acknowledge data should be re-set since the acknowledge data setting is rewritten by the ACKB bit reading value. Write the ACKE bit to 0 to clear the ACKB flag to 0, bofore transmission is ended and a stop condition is issued in master mode, or before transmission is ended and SDA is released to issue a stop condition by a master device. Note: * Only a 0 can be written to this bit, to clear the flag.
14.3.8 DDC Switch Register (DDCSWR) 14.4 Operation 14.4.1 I C Bus Data Format
2 2
403 404 404
Note 1 amended Note: 1. Only 0 can be written to these bits. Description amended The I C Bus interface has clocked synchronous serial and ... Description amended ... in figure 14.3. The clocked synchronous serial format is a non-addressing ... Figure 14.4 title amended
2
Figure 14.4 I C Bus 404 Data Format (Clocked Synchronous Serial Format) 14.4.2 Initial Setting Figure 14.6 Flowchart for IIC Initialization (Example) 406 406
14.4.2 replaced Figure 14.6 added
Rev. 4.00 Mar 21, 2006 page xxix of lxviii
Item 14.4.3 Master Transmit Operation Figure 14.7 Flowchart for Master Transmit Mode (Example)
Page 407
Revision (See Manual for Details) Figure 14.7 added
408
Description amended The transmission procedure and operations synchronized with the ICDR writing are described below. 1. Perform initial settings as described in section 14.4.2, Initial Setting. ... 6. After the start condition is detected, write data (slave address + R/W) to ICDR. With ... the 7-bit slave address and transmit/receive direction (R/W). As indicating ...
409 Figure 14.8 Example 409 of Master Transit Mode Operation Timing (MLS = WAIT = 0) Figure 14.9 Example 410 of Master Transit Mode Stop Condition Generation Timing (MLS = WAIT = 0) 14.4.4 Master Receive Operation 410 to 415
12. Clear the IRIC flag to 0. Write 0 to ACKE in ICCR, to clear received ACKB contents to 0. Write 0 to BBSY ... Figure 14.8 added
Figure 14.9 added
14.4.4 replaced Description amended ... an acknowledge signal. The slave device compares its own address with the slave address in the first frame following the establishment of the start condition issued by the master device. If the addresses match, the slave device operates as the slave device designated by the master device. Figure 14.14 is a flowchart showing an example of slave receive mode operation.
14.4.5 Slave Receive 415 Operation
Figure 14.14 Flowchart of Slave Transmit Mode (Example)
416
Figure 14.14 added
Rev. 4.00 Mar 21, 2006 page xxx of lxviii
Item
Page
Revision (See Manual for Details) Description amended 5. Read ICDR and clear the IRIC flag in ICCR to 0. The RDRF flag is cleared to 0. Read the IRDR flag and clear the IRIC flag to 0 consecutively, with no interrupt processing occurring between them. If the time needed to transmit one byte of data elapses before the IRIC flag is cleared, it will not be possible to determine when the transfer has completed. Description of "Interrupt request generation" deleted from figure 14.15
14.4.5 Slave Receive 417 Operation Figure 14.14 Flowchart of Slave Transmit Mode (Example) Figure 14.15 Example 418 of Slave Receive Mode Operation Timing (1) (MLS=ACKB=0) Figure 14.16 Example 419 of Slave Receive Mode Operation Timing (2) (MLS=ACKB=0) 14.4.6 Slave Transmit 420 to Operation 422 14.4.7 IRIC Setting Timing and SCL Control Figure 14.19 ISIC Setting Timing and SCL Control -- 14.4.8 Operation Using the DTC (H8S/2268 Group Only) Table 14.5 Flags and Transfer States 424 423
Description of "Interrupt request generation" deleted from figure 14.16
14.4.6 replaced Figure 14.19 replaced
Section of "Sample Flowchart" deleted Table 14.5 amended
Item Master Transmit Master Receive Mode Mode Slave Transmit Mode Slave Receive Mode Reception by CPU (ICDR read)
Slave address + Transmission by Transmission by Reception by CPU R/W bit DTC (ICDR write) CPU (ICDR write) (ICDR read) Transmission/ reception Dummy data read Processing by CPU (ICDR read)
Actual data Transmission by Reception by DTC Transmission by transmission/re DTC (ICDR write) (ICDR read) DTC (ICDR write) ception
Reception by DTC (ICDR read)
14.4.10 Initialization of Internal State 14.5 Interrupt Source
425, 426 14.4.10 added 427 14.5 added
Rev. 4.00 Mar 21, 2006 page xxxi of lxviii
Item 14.6 Usage Notes
Page 427
Revision (See Manual for Details) Description amended 1. ... to generate a start condition is issued and then an instruction to generate a stop condition is issued before the start 2 condition is output to the I C bus, neither condition will be output correctly. ...
Figure 14.22 433 Flowchart and Timing of Start Condition Instruction Issuance for Retransmission 434 to 439 15.1 Features 441
Figure 14.22 amended [2] Determine whether SCL is low
"10. Notes on IRIC Flag Clearance When Using Wait Function" to "16. Notes on Wait Operation in Master Mode" description added Description added * Module stop mode can be set * Selectable range of voltages off analog inputs The range of voltages of analog input s to be converted can be specified using the Vref signal as the analog reference voltage.
Figure 15.1 Block Diagram of A/D Converter 15.3.2 A/D Control/Status Register (ADCSR)
442
Figure 15.1 replaced
445
[Clearing condition] of ADF amended 2 (Before) * When the DTC* is activated by an ADI interrupt and 2 2 ADDR is read * (After) * When the DTC* is activated by an ADI interrupt and the DISEL bit in DTC is 0 with the transfer counter other than 0 15.4 added Description added ... indicated in table 15.3. Specify the conversion time by setting its CKS0 and CKS1 in ADCR with ADST cleared to 0. Note that the specified conversion time should be longer than the value described in A/D Conversion Characteristics in section 25, Electrical Characteristics. In scan mode, ...
15.4 Interface to Bus 448 Master 15.5.3 Input Sampling and A/D Conversion Time 452
16.1 Features
461
Description deleted ... * Output voltage: 0 V to Vref * Module stop mode can be set 16.5.1 replaced
16.5.1 Analog 465 Power Supply Current in Power-Down Mode
Rev. 4.00 Mar 21, 2006 page xxxii of lxviii
Item 17.1 Features Figure 17.1 Block Diagram of LCD Controller/Driver
Page 468
Revision (See Manual for Details) Figure 17.1 amended LCD drive power supply (Built-in step-up voltage circuit* ) /16 to /2048*
2 1
SUB to SUB/4 468 Note *2 added Notes: 1. Supported only by the H8S/2268 Group. 2. The clock oscillator stops operating in subactive, subsleep, and watch mode. Therefore, be sure to select a frequency between SUB and SUB/4.
20.5.1 Flash Memory 510 Control Register 1 (FLMCR1)
Table amended Flash Write Enable Bit ... It is cleared to 0 when a low level is input to the Few pin, and set to 1 when ... Description amended 7. For a dummy write to a verify address, write 1-byte data H'FF to an address whose lower 1 bit is b'0.
20.8.1 Program/ Program-Verify 20.8.2 Erase/EraseVerify
523
525
Description amended 5. For a dummy write to a verify address, write 1-byte data H'FF to an address whose lower 1 bit is b'0. Figure 20.13 amended
RES SWE1 set SWE1bit SWE1 cleared
20.13 Flash Memory 533 Programming and Erasing Precautions Figure 20.13 Power-On/Off Timing (Boot Mode) Figure 20.14 534 Power-On/Off Timing (User Program Mode)
Figure 20.14 amended
RES SWE1 set SWE1 bit SWE1 cleared
Figure 20.15 Mode 535 Transition Timing (Example: Boot Mode User Mode User Program Mode)
Figure 20.15 amended
tRESW RES SWE1 set SWE1 bit Mode change*1 Boot mode SWE1 cleared
Mode User change*1 mode
User program mode
User mode
User program mode
Rev. 4.00 Mar 21, 2006 page xxxiii of lxviii
Item Section 22 PowerDown Modes Table 22.1 LSI Internal States in Each Mode 22.1 Register Description
Page
Revision (See Manual for Details)
550, 551 Note *3 added 23 D/A* * Note: 3. "Halted (retained)" means that internal register values are retained. For analog outputs, the given D/A absolute accuracy is not satisfies because the internal state is "operation suspended." 554 Description amended * Timer control status register (TCSR_1) Description amended ... When the SLEEP instruction is executed with the SSBY bit = 1, LSON bit = 0, and PSS bit in TCSR_1(WDT_1) = 0, operation shifts to the ... Description amended TCSR_1 (WDT_1) 561 Note added Note: The 16-state standby time cannot be used in the F-ZTAT versions; a standby time of 2048 states or longer should be used. 561 Table 22.3 amended
STS2 1 STS1 0 STS0 0 1 1 0 1 Standby Time 131072 states 262144 states 2048 states 16 states 20 MHz 6.6 13.1 0.10 0.8 16 MHz 8.2 16.4 0.13 1.0 13 MHz 10.1 20.2 0.16 1.2 10 MHz 13.1 26.2 0.20 1.6 8 MHz 6 MHz 4 MHz 2 MHz 16.4 32.8 0.26 2.0 21.8 43.7 0.34 2.7 32.8 65.5 0.51 4.0 65.5 131.1 1.0 8.0 s Unit
22.2 Medium-Speed 558 Mode
22.4.1 Software Standby Mode 22.4.3 Oscillation Settling Time after Clearing Software Standby Mode Table 22.3 Oscillation Settling Time Settings
560
22.7.1 Transition to Watch Mode 22.8.1 Transition to Sub-Sleep Mode 22.9.1 Transition to Sub-Active Mode 22.9.2 Exiting to Sub-Active Mode 22.10.1 Direct Transitions from High-Speed Mode to Sub-Active Mode
564 565
Description amended ... LPWRCR DTON = 0, and TCSR_1 (WDT_1) PSS = 1. Description amended ... LPWRCR LSON bit = 1, and TCSR_1 (WDT_1) PSS bit = 1, ... TMR_0, TMR_1, TMR_2 to TMR_4 ...
566 566
Description amended ... LSON bit =1, and TCSR_1 (WDT_1) PSS bit =1, ... Description amended ... LPWRCR DTON bit =0, and TCSR_1 (WDT_1) PSS bit =1, ...
567
Description amended ... DTON bit =1, and TSCR_1 (WDT_1) PSS bit =1 ...
Rev. 4.00 Mar 21, 2006 page xxxiv of lxviii
Item
Page
Revision (See Manual for Details) Description amended ... DTON bit =1,and TSCR_1 (WDT_1) PSS bit =1 ...
22.10.2 Direct 567 Transitions from SubActive Mode to HighSpeed Mode 25.2.2 DC Characteristics Table 25.2 DC Characteristics (1) 25.2.2 DC Characteristics Table 25.2 DC Characteristics (1) Table 25.2 DC Characteristics (2) 600 601 599 598 598
Condition B deleted Table 25.2 (1) amended (Before) VCC = 2.7 to 4.0 V (After) VCC = 3.0 to 4.0 V Note 2 amended Note: 2. ... by NMOS. To output high, pull-up resistance ...
Condition D deleted Note 2 amended Note: 2. P35/SCK1/SCL0 and P34/SDA0 are NMOS push-pull outputs. To output high level signal ... , pull-up resistors must be connected externally. ... by NMOS. To output high, pull-up resistors should be connected externally.
-- -- Table 25.3 Permissible Output Currents 606
Table of DC Characteristics (4) deleted Table of DC Characteristics (6) deleted Conditions B and D deleted
Table 25.4 Bus Drive 607 Characteristics (1)
Condition B deleted Description in test conditions in table 25.4 (1) amended Vcc = 3.0 to 4.0 V
Table 25.4 Bus Drive 608 Characteristics (2) 25.2.3 AC Characteristics Table 25.5 Clock Timing Table 25.6 Control Signal Timing 610 609
Condition D deleted Conditions B and D deleted
Conditions B and D deleted Conditions B and D deleted
Table 25.7 Timing of 611 On-Chip Peripheral Modules
Rev. 4.00 Mar 21, 2006 page xxxv of lxviii
Item 25.2.3 AC Characteristics Table 25.8 I C Bus Timing 25.2.4 A/D Conversion Characteristics Table 25.9 A/D Conversion Characteristics 25.2.5 D/A Conversion Characteristics Table 25.10 D/A Conversion Characteristics 25.2.6 LCD Characteristics Table 25.11 LCD Characteristics 25.2.7 DTMF Characteristics Table 25.12 DTMF Characteristics 25.3.2 DC Characteristics Table 25.15 DC Characteristics (1)
2
Page 612
Revision (See Manual for Details) Condition amended (Before) VCC = 2.7 to 5.5 V (After) VCC = 3.0 to 5.5 V (Before) Ta = -40C to + 80C (After) Ta = -40C to + 85C
613
Conditions B and D deleted
614
Conditions B and D deleted Note * added Absolute accuracy* Note: * Does not apply to module stop mode, software standby mode, watch mode, subactive mode, and subsleep mode.
615
Conditions B and D deleted
616
Conditions B and D deleted
620, 621 Description amended (Before) FEW (After) FWE 621 Note 2 amended Note: 2. ... P35/SCK1 and P34 (ICE =0) are driven high by NMOS. To output high, pull-up resistors should be connected externally. 623 Note 2 amended Note: 2. ... P35/SCK1 and P34 (ICE =0) are driven high by NMOS. To output high, pull-up resistors should be connected externally.
25.3.2 DC Characteristics Table 25.15 Characteristics (2)
Rev. 4.00 Mar 21, 2006 page xxxvi of lxviii
Item 25.3.2 DC Characteristics Table 25.15 DC Characteristics (3)
Page 624
Revision (See Manual for Details) Table 25.15 (3) amended
Item Analog power supply current During A/D conversion Waiting for A/D conversion During A/D conversion Waiting for A/D conversion AlCC Symbol AlCC Min. -- -- Typ. 0.3 0.01 Max. 1.5 5.0 Unit Test Conditions mA A
Reference current
-- --
0.4 0.01
1.0 5.0
mA A
Table 25.15 DC Characteristics (4)
626
Table 25.15 (4) amended
Item Analog power supply current During A/D conversion Waiting for A/D conversion During A/D conversion Waiting for A/D conversion AlCC Symbol AlCC Min. -- -- Typ. 0.8 0.01 Max. 1.6 5.0 Unit Test Conditions mA A
Reference current
-- --
0.6 0.01
1.0 5.0
mA A
25.3.3 AC Characteristics Table 25.21 I C Bus Timing Appendix B Product Codes
2
633
Table 25.21 amended (Before) Ta = -40C to + 80C (After) Ta = -40C to + 85C
645
* H8S/2268 Group Legend and Note deleted Figure C.1 replaced
Appendix C Package 647 Dimensions Figure C.1 TFP-100B Package Dimensions (H8S/2268 Group Only) Figure C.2 TFP-100G 648 Package Dimensions Figure C.3 FP-100B Package Dimensions 649
Figure C.2 replaced Figure C.3 replaced
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Rev. 4.00 Mar 21, 2006 page xxxviii of lxviii
Contents
Section 1 Overview.............................................................................................................
1.1 1.2 1.3 1.4 Features ............................................................................................................................. Internal Block Diagram..................................................................................................... Pin Arrangement ............................................................................................................... Pin Functions .................................................................................................................... 1 1 3 5 7
Section 2 CPU ...................................................................................................................... 13
2.1 Features ............................................................................................................................. 2.1.1 Differences between H8S/2600 CPU and H8S/2000 CPU .................................. 2.1.2 Differences from H8/300 CPU ............................................................................ 2.1.3 Differences from H8/300H CPU.......................................................................... CPU Operating Modes ...................................................................................................... 2.2.1 Normal Mode....................................................................................................... 2.2.2 Advanced Mode ................................................................................................... Address Space ................................................................................................................... Register Configuration ...................................................................................................... 2.4.1 General Registers ................................................................................................. 2.4.2 Program Counter (PC) ......................................................................................... 2.4.3 Extended Control Register (EXR) (H8S/2268 Group Only)................................ 2.4.4 Condition-Code Register (CCR) .......................................................................... 2.4.5 Initial Values of CPU Registers ........................................................................... Data Formats ..................................................................................................................... 2.5.1 General Register Data Formats ............................................................................ 2.5.2 Memory Data Formats ......................................................................................... Instruction Set ................................................................................................................... 2.6.1 Table of Instructions Classified by Function ....................................................... 2.6.2 Basic Instruction Formats .................................................................................... Addressing Modes and Effective Address Calculation ..................................................... 2.7.1 Register DirectRn............................................................................................. 2.7.2 Register Indirect@ERn .................................................................................... 2.7.3 Register Indirect with Displacement@(d:16, ERn) or @(d:32, ERn).............. 2.7.4 Register Indirect with Post-Increment or Pre-Decrement@ERn+ or @-ERn .. 2.7.5 Absolute Address@aa:8, @aa:16, @aa:24, or @aa:32.................................... 2.7.6 Immediate#xx:8, #xx:16, or #xx:32 ................................................................. 2.7.7 Program-Counter Relative@(d:8, PC) or @(d:16, PC).................................... 2.7.8 Memory Indirect@@aa:8 ................................................................................ 2.7.9 Effective Address Calculation.............................................................................. Processing States............................................................................................................... 13 14 15 15 16 16 18 20 21 22 23 23 24 25 26 26 28 29 30 39 40 41 41 41 42 42 43 43 43 44 47
2.2
2.3 2.4
2.5
2.6
2.7
2.8
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2.9
Usage Notes ...................................................................................................................... 2.9.1 TAS Instruction.................................................................................................... 2.9.2 STM/LDM Instruction ......................................................................................... 2.9.3 Bit Manipulation Instructions .............................................................................. 2.9.4 Access Method for Registers with Write-Only Bits.............................................
49 49 49 49 51
Section 3 MCU Operating Modes .................................................................................. 55
3.1 3.2 3.3 3.4 Operating Mode Selection................................................................................................. Register Description.......................................................................................................... 3.2.1 Mode Control Register (MDCR) ......................................................................... Operating Mode ................................................................................................................ Address Map ..................................................................................................................... 55 56 56 56 57
Section 4 Exception Handling ......................................................................................... 59
4.1 4.2 4.3 Exception Handling Types and Priority ............................................................................ Exception Sources and Exception Vector Table ............................................................... Reset61 4.3.1 Reset Exception Handling.................................................................................... 4.3.2 Interrupts after Reset............................................................................................ 4.3.3 State of On-Chip Peripheral Modules after Reset Release................................... Traces (Supported Only by the H8S/2268 Group)............................................................ Interrupts ........................................................................................................................... Trap Instruction................................................................................................................. Stack Status after Exception Handling.............................................................................. Usage Note........................................................................................................................ 59 60 61 62 62 63 63 64 65 65
4.4 4.5 4.6 4.7 4.8
Section 5 Interrupt Controller .......................................................................................... 67
5.1 5.2 5.3 Features ............................................................................................................................. Input/Output Pins .............................................................................................................. Register Descriptions ........................................................................................................ 5.3.1 System Control Register (SYSCR) ...................................................................... 5.3.2 Interrupt Priority Registers A to G, I to M, and O (IPRA to IPRG, IPRI to IPRM, IPRO) (H8S/2268 Group Only) ............................................................... 5.3.3 IRQ Enable Register (IER) .................................................................................. 5.3.4 IRQ Sense Control Registers H and L (ISCRH and ISCRL) ............................... 5.3.5 IRQ Status Register (ISR).................................................................................... 5.3.6 Wakeup Interrupt Request Register (IWPR)........................................................ 5.3.7 Interrupt Enable Register 1 (IENR1) ................................................................... Interrupt Sources ............................................................................................................... 5.4.1 External Interrupts ............................................................................................... 5.4.2 Internal Interrupts................................................................................................. 67 70 71 71 73 74 75 77 80 80 81 81 84
5.4
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5.5
5.6
5.4.3 Interrupt Exception Handling Vector Table......................................................... Operation........................................................................................................................... 5.5.1 Interrupt Control Modes and Interrupt Operation ................................................ 5.5.2 Interrupt Control Mode 0 ..................................................................................... 5.5.3 Interrupt Control Mode 2 (H8S/2268 Group Only) ............................................. 5.5.4 Interrupt Exception Handling Sequence .............................................................. 5.5.5 Interrupt Response Times .................................................................................... 5.5.6 DTC Activation by Interrupt (H8S/2268 Group Only) ........................................ Usage Notes ...................................................................................................................... 5.6.1 Contention between Interrupt Generation and Disabling..................................... 5.6.2 Instructions that Disable Interrupts ...................................................................... 5.6.3 When Interrupts Are Disabled ............................................................................. 5.6.4 Interrupts during Execution of EEPMOV Instruction..........................................
84 88 88 92 94 95 97 98 100 100 101 101 102
Section 6 PC Break Controller (PBC) ........................................................................... 103
6.1 6.2 Features ............................................................................................................................. Register Descriptions ........................................................................................................ 6.2.1 Break Address Register A (BARA) ..................................................................... 6.2.2 Break Address Register B (BARB)...................................................................... 6.2.3 Break Control Register A (BCRA) ...................................................................... 6.2.4 Break Control Register B (BCRB)....................................................................... Operation........................................................................................................................... 6.3.1 PC Break Interrupt Due to Instruction Fetch ....................................................... 6.3.2 PC Break Interrupt Due to Data Access............................................................... 6.3.3 Notes on PC Break Interrupt Handling ................................................................ 6.3.4 Operation in Transitions to Power-Down Modes ................................................ 6.3.5 When Instruction Execution Is Delayed by One State ......................................... Usage Notes ...................................................................................................................... 6.4.1 Module Stop Mode Setting .................................................................................. 6.4.2 PC Break Interrupts.............................................................................................. 6.4.3 CMFA and CMFB ............................................................................................... 6.4.4 PC Break Interrupt when DTC Is Bus Master...................................................... 6.4.5 PC Break Set for Instruction Fetch at Address Following BSR, JSR, JMP, TRAPA, RTE, or RTS Instruction ....................................................................... 6.4.6 I Bit Set by LDC, ANDC, ORC, or XORC Instruction ....................................... 6.4.7 PC Break Set for Instruction Fetch at Address Following Bcc Instruction.......... 6.4.8 PC Break Set for Instruction Fetch at Branch Destination Address of Bcc Instruction ..................................................................................................... 103 104 104 105 105 106 106 106 107 107 107 108 109 109 109 109 109 109 110 110 110
6.3
6.4
Section 7 Bus Controller.................................................................................................... 111
7.1 Basic Timing ..................................................................................................................... 111
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7.2
7.1.1 On-Chip Memory Access Timing (ROM, RAM) ................................................ 7.1.2 On-Chip Peripheral Module Access Timing (H'FFFDAC to H'FFFFBF) ........... 7.1.3 On-Chip Peripheral Module Access Timing (H'FFFC30 to H'FFFCA3)............. Bus Arbitration (H8S/2268 Group Only).......................................................................... 7.2.1 Order of Priority of the Bus Masters.................................................................... 7.2.2 Bus Transfer Timing ............................................................................................ 7.2.3 Resets and the Bus Controller ..............................................................................
111 112 112 113 113 114 114
Section 8 Data Transfer Controller (DTC)................................................................... 115
8.1 8.2 Features ............................................................................................................................. Register Descriptions ........................................................................................................ 8.2.1 DTC Mode Register A (MRA) ............................................................................ 8.2.2 DTC Mode Register B (MRB)............................................................................. 8.2.3 DTC Source Address Register (SAR).................................................................. 8.2.4 DTC Destination Address Register (DAR).......................................................... 8.2.5 DTC Transfer Count Register A (CRA) .............................................................. 8.2.6 DTC Transfer Count Register B (CRB)............................................................... 8.2.7 DTC Enable Register (DTCER) .......................................................................... 8.2.8 DTC Vector Register (DTVECR)........................................................................ Activation Sources ............................................................................................................ Location of Register Information and DTC Vector Table ................................................ Operation........................................................................................................................... 8.5.1 Normal Mode....................................................................................................... 8.5.2 Repeat Mode ........................................................................................................ 8.5.3 Block Transfer Mode ........................................................................................... 8.5.4 Chain Transfer ..................................................................................................... 8.5.5 Interrupts.............................................................................................................. 8.5.6 Operation Timing................................................................................................. 8.5.7 Number of DTC Execution States........................................................................ Procedures for Using DTC................................................................................................ 8.6.1 Activation by Interrupt......................................................................................... 8.6.2 Activation by Software ........................................................................................ Examples of Use of DTC .................................................................................................. 8.7.1 Normal Mode....................................................................................................... 8.7.2 Software Activation ............................................................................................. Usage Notes ...................................................................................................................... 8.8.1 Module Stop Mode Setting .................................................................................. 8.8.2 On-Chip RAM ..................................................................................................... 8.8.3 DTCE Bit Setting................................................................................................. 115 116 117 118 119 119 119 119 120 121 122 123 126 127 128 129 131 132 132 134 135 135 135 136 136 136 137 137 137 137
8.3 8.4 8.5
8.6
8.7
8.8
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Section 9 I/O Ports .............................................................................................................. 139
9.1 Port 1 9.1.1 9.1.2 9.1.3 9.1.4 Port 3 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 Port 4 9.3.1 9.3.2 Port 7 9.4.1 9.4.2 9.4.3 9.4.4 Port 9 9.5.1 9.5.2 Port F 9.6.1 9.6.2 9.6.3 9.6.4 Port H 9.7.1 9.7.2 9.7.3 9.7.4 Port J 9.8.1 9.8.2 9.8.3 9.8.4 9.8.5 9.8.6 ............................................................................................................................. Port 1 Data Direction Register (P1DDR)............................................................. Port 1 Data Register (P1DR)................................................................................ Port 1 Register (PORT1)...................................................................................... Pin Functions ....................................................................................................... ............................................................................................................................. Port 3 Data Direction Register (P3DDR)............................................................. Port 3 Data Register (P3DR)................................................................................ Port 3 Register (PORT3)...................................................................................... Port 3 Open Drain Control Register (P3ODR)..................................................... Pin Functions ....................................................................................................... ............................................................................................................................. Port 4 Register (PORT4)...................................................................................... Pin Functions ....................................................................................................... ............................................................................................................................. Port 7 Data Direction Register (P7DDR)............................................................. Port 7 Data Register (P7DR)................................................................................ Port 7 Register (PORT7)...................................................................................... Pin Functions ....................................................................................................... ............................................................................................................................. Port 9 Register (PORT9)...................................................................................... Pin Functions ....................................................................................................... ............................................................................................................................. Port F Data Direction Register (PFDDR) ............................................................ Port F Data Register (PFDR) ............................................................................... Port F Register (PORTF) ..................................................................................... Pin Functions ....................................................................................................... ............................................................................................................................. Port H Data Direction Register (PHDDR) ........................................................... Port H Data Register (PHDR) .............................................................................. Port H Register (PORTH) .................................................................................... Pin Functions ....................................................................................................... ............................................................................................................................. Port J Data Direction Register (PJDDR).............................................................. Port J Data Register (PJDR)................................................................................. Port J Register (PORTJ)....................................................................................... Port J Pull-Up MOS Control Register (PJPCR)................................................... Wakeup Control Register (WPCR)...................................................................... Pin Functions ....................................................................................................... 145 145 146 146 147 150 151 151 152 152 153 156 156 156 156 157 157 158 158 161 161 161 161 162 162 163 163 164 164 164 165 165 167 168 168 169 169 170 170
9.2
9.3
9.4
9.5
9.6
9.7
9.8
Rev. 4.00 Mar 21, 2006 page xliii of lxviii
9.9
9.8.7 Input Pull-Up MOS Function............................................................................... Port K ............................................................................................................................. 9.9.1 Port K Data Direction Register (PKDDR) ........................................................... 9.9.2 Port K Data Register (PKDR) .............................................................................. 9.9.3 Port K Register (PORTK) .................................................................................... 9.9.4 Pin Functions ....................................................................................................... 9.10 Port L ............................................................................................................................. 9.10.1 Port L Data Direction Register (PLDDR) ............................................................ 9.10.2 Port L Data Register (PLDR)............................................................................... 9.10.3 Port L Register (PORTL)..................................................................................... 9.10.4 Pin Functions ....................................................................................................... 9.11 Port M (H8S/2268 Group Only) ....................................................................................... 9.11.1 Port M Data Direction Register (PMDDR).......................................................... 9.11.2 Port M Data Register (PMDR)............................................................................. 9.11.3 Port M Register (PORTM)................................................................................... 9.11.4 Pin Functions ....................................................................................................... 9.12 Port N (H8S/2268 Group Only) ........................................................................................ 9.12.1 Port N Data Direction Register (PNDDR) ........................................................... 9.12.2 Port N Data Register (PNDR) .............................................................................. 9.12.3 Port N Register (PORTN) .................................................................................... 9.12.4 Pin Functions .......................................................................................................
171 171 172 172 173 173 174 174 175 175 176 176 176 177 178 178 179 179 180 180 181
Section 10 16-Bit Timer Pulse Unit (TPU).................................................................. 183
10.1 Features ............................................................................................................................. 10.2 Input/Output Pins .............................................................................................................. 10.3 Register Descriptions ........................................................................................................ 10.3.1 Timer Control Register (TCR) ............................................................................. 10.3.2 Timer Mode Register (TMDR) ............................................................................ 10.3.3 Timer I/O Control Register (TIOR) ..................................................................... 10.3.4 Timer Interrupt Enable Register (TIER) .............................................................. 10.3.5 Timer Status Register (TSR)................................................................................ 10.3.6 Timer Counter (TCNT)........................................................................................ 10.3.7 Timer General Register (TGR) ............................................................................ 10.3.8 Timer Start Register (TSTR)................................................................................ 10.3.9 Timer Synchro Register (TSYR) ......................................................................... 10.4 Interface to Bus Master ..................................................................................................... 10.4.1 16-Bit Registers ................................................................................................... 10.4.2 8-Bit Registers ..................................................................................................... 10.5 Operation........................................................................................................................... 10.5.1 Basic Functions.................................................................................................... 10.5.2 Synchronous Operation........................................................................................
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183 188 189 190 193 195 205 207 211 211 212 213 214 214 214 216 216 221
10.6 10.7 10.8 10.9
10.10
10.5.3 Buffer Operation (H8S/2268 Group Only) .......................................................... 10.5.4 PWM Modes ........................................................................................................ 10.5.5 Phase Counting Mode (H8S/2268 Group Only) .................................................. Interrupt Sources ............................................................................................................... DTC Activation (H8S/2268 Group Only) ......................................................................... A/D Converter Activation ................................................................................................. Operation Timing.............................................................................................................. 10.9.1 Input/Output Timing ............................................................................................ 10.9.2 Interrupt Signal Timing........................................................................................ Usage Notes ...................................................................................................................... 10.10.1 Module Stop Mode Setting .................................................................................. 10.10.2 Input Clock Restrictions....................................................................................... 10.10.3 Caution on Period Setting .................................................................................... 10.10.4 Contention between TCNT Write and Clear Operations ..................................... 10.10.5 Contention between TCNT Write and Increment Operations.............................. 10.10.6 Contention between TGR Write and Compare Match ......................................... 10.10.7 Contention between Buffer Register Write and Compare Match (H8S/2268 Group Only)....................................................................................... 10.10.8 Contention between TGR Read and Input Capture.............................................. 10.10.9 Contention between TGR Write and Input Capture............................................. 10.10.10 Contention between Buffer Register Write and Input Capture (H8S/2268 Group Only)................................................................................... 10.10.11 Contention between Overflow/Underflow and Counter Clearing.................... 10.10.12 Contention between TCNT Write and Overflow/Underflow........................... 10.10.13 Multiplexing of I/O Pins .................................................................................. 10.10.14 Interrupts in Module Stop Mode ......................................................................
223 226 231 236 237 237 238 238 242 245 245 245 246 246 247 248 249 250 251 252 253 254 254 254
Section 11 8-Bit Timers..................................................................................................... 255
11.1 8-Bit Timer Module (TMR_0, TMR_1, TMR_2, and TMR_3)........................................ 11.1.1 Features................................................................................................................ 11.2 Input/Output Pins .............................................................................................................. 11.3 Register Descriptions ........................................................................................................ 11.3.1 Timer Counter (TCNT)........................................................................................ 11.3.2 Time Constant Register A (TCORA)................................................................... 11.3.3 Time Constant Register B (TCORB) ................................................................... 11.3.4 Timer Control Register (TCR) ............................................................................. 11.3.5 Timer Control/Status Register (TCSR) ................................................................ 11.4 Operation........................................................................................................................... 11.4.1 Pulse Output......................................................................................................... 11.5 Operation Timing.............................................................................................................. 11.5.1 TCNT Incrementation Timing ............................................................................. 255 255 257 257 258 258 258 259 261 266 266 267 267
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11.6
11.7
11.8
11.9
11.10
11.11
11.12
11.5.2 Timing of CMFA and CMFB Setting When a Compare-Match Occurs.............. 11.5.3 Timing of Timer Output When a Compare-Match Occurs .................................. 11.5.4 Timing of Compare-Match Clear When a Compare-Match Occurs .................... 11.5.5 TCNT External Reset Timing .............................................................................. 11.5.6 Timing of Overflow Flag (OVF) Setting ............................................................. Operation with Cascaded Connection ............................................................................... 11.6.1 16-Bit Count Mode .............................................................................................. 11.6.2 Compare-Match Count Mode .............................................................................. Interrupt Sources ............................................................................................................... 11.7.1 Interrupt Sources and DTC Activation ................................................................ 11.7.2 A/D Converter Activation.................................................................................... Usage Notes ...................................................................................................................... 11.8.1 Contention between TCNT Write and Clear........................................................ 11.8.2 Contention between TCNT Write and Increment ................................................ 11.8.3 Contention between TCOR Write and Compare-Match ...................................... 11.8.4 Contention between Compare-Matches A and B ................................................. 11.8.5 Switching of Internal Clocks and TCNT Operation............................................. 11.8.6 Contention between Interrupts and Module Stop Mode ...................................... 8-Bit Reload Timer (TMR_4) (H8S/2268 Group Only) ................................................... 11.9.1 Features................................................................................................................ 11.9.2 Input/Output Pins ................................................................................................. Register Descriptions ........................................................................................................ 11.10.1 Timer Control Registers 4 to 7 (TCR_4 to TCR_7)............................................. 11.10.2 Timer Counters 4 to 7 (TCNT4 to TCNT7)......................................................... 11.10.3 Time Reload Registers 4 to 7 (TLR_4 to TLR_7) ............................................... Operation........................................................................................................................... 11.11.1 Interval Timer Operation ..................................................................................... 11.11.2 Automatic Reload Timer Operation..................................................................... 11.11.3 Cascaded Connection........................................................................................... Usage Notes ...................................................................................................................... 11.12.1 Conflict between Write to TLR and Count Up/Automatic Reload ...................... 11.12.2 Switchover of Internal Clock and TCNT Operation ............................................ 11.12.3 Interrupt during Module Stop ..............................................................................
268 268 269 269 270 271 271 271 272 272 272 273 273 274 275 275 276 277 278 278 279 280 280 281 281 282 282 283 283 285 285 285 285
Section 12 Watchdog Timer (WDT).............................................................................. 287
12.1 Features ............................................................................................................................. 12.2 Register Descriptions ........................................................................................................ 12.2.1 Timer Counter (TCNT)........................................................................................ 12.2.2 Timer Control/Status Register (TCSR) ................................................................ 12.2.3 Reset Control/Status Register (RSTCSR) (Only WDT_0) .................................. 12.3 Operation...........................................................................................................................
Rev. 4.00 Mar 21, 2006 page xlvi of lxviii
287 289 289 289 293 294
12.3.1 Watchdog Timer Mode ........................................................................................ 12.3.2 Interval Timer Mode ............................................................................................ 12.3.3 Timing of Setting Overflow Flag (OVF) ............................................................. 12.3.4 Timing of Setting Watchdog Timer Overflow Flag (WOVF).............................. 12.4 Interrupt Sources ............................................................................................................... 12.5 Usage Notes ...................................................................................................................... 12.5.1 Notes on Register Access..................................................................................... 12.5.2 Contention between Timer Counter (TCNT) Write and Increment ..................... 12.5.3 Changing Value of CKS2 to CKS0...................................................................... 12.5.4 Switching between Watchdog Timer Mode and Interval Timer Mode................ 12.5.5 Internal Reset in Watchdog Timer Mode............................................................. 12.5.6 OVF Flag Clearing in Interval Timer Mode ........................................................
294 295 296 296 297 297 297 299 299 299 300 300
Section 13 Serial Communication Interface (SCI) .................................................... 301
13.1 Features ............................................................................................................................. 13.2 Input/Output Pins .............................................................................................................. 13.3 Register Descriptions ........................................................................................................ 13.3.1 Receive Shift Register (RSR) .............................................................................. 13.3.2 Receive Data Register (RDR) .............................................................................. 13.3.3 Transmit Data Register (TDR)............................................................................. 13.3.4 Transmit Shift Register (TSR) ............................................................................. 13.3.5 Serial Mode Register (SMR)................................................................................ 13.3.6 Serial Control Register (SCR).............................................................................. 13.3.7 Serial Status Register (SSR) ................................................................................ 13.3.8 Smart Card Mode Register (SCMR) .................................................................... 13.3.9 Bit Rate Register (BRR) ...................................................................................... 13.3.10 Serial Expansion Mode Register (SEMR_0) ....................................................... 13.4 Operation in Asynchronous Mode .................................................................................... 13.4.1 Data Transfer Format ........................................................................................... 13.4.2 Receive Data Sampling Timing and Reception Margin in Asynchronous Mode .................................................................................................................... 13.4.3 Clock.................................................................................................................... 13.4.4 SCI Initialization (Asynchronous Mode) ............................................................. 13.4.5 Serial Data Transmission (Asynchronous Mode) ................................................ 13.4.6 Serial Data Reception (Asynchronous Mode)...................................................... 13.5 Multiprocessor Communication Function......................................................................... 13.5.1 Multiprocessor Serial Data Transmission ............................................................ 13.5.2 Multiprocessor Serial Data Reception ................................................................. 13.6 Operation in Clocked Synchronous Mode ........................................................................ 13.6.1 Clock.................................................................................................................... 13.6.2 SCI Initialization (Clocked Synchronous Mode) ................................................. 301 305 305 306 306 306 307 307 311 316 323 324 332 336 336 338 339 340 341 343 347 349 350 353 353 353
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13.6.3 Serial Data Transmission (Clocked Synchronous Mode) .................................... 13.6.4 Serial Data Reception (Clocked Synchronous Mode).......................................... 13.6.5 Simultaneous Serial Data Transmission and Reception (Clocked Synchronous Mode)................................................................................................................... 13.7 Operation in Smart Card Interface .................................................................................... 13.7.1 Pin Connection Example...................................................................................... 13.7.2 Data Format (Except for Block Transfer Mode) .................................................. 13.7.3 Block Transfer Mode ........................................................................................... 13.7.4 Receive Data Sampling Timing and Reception Margin....................................... 13.7.5 Initialization ......................................................................................................... 13.7.6 Serial Data Transmission (Except for Block Transfer Mode).............................. 13.7.7 Serial Data Reception (Except for Block Transfer Mode) ................................... 13.7.8 Clock Output Control........................................................................................... 13.8 Interrupt Sources ............................................................................................................... 13.8.1 Interrupts in Normal Serial Communication Interface Mode............................... 13.8.2 Interrupts in Smart Card Interface Mode ............................................................. 13.9 Usage Notes ...................................................................................................................... 13.9.1 Module Stop Mode Setting .................................................................................. 13.9.2 Break Detection and Processing (Asynchronous Mode Only)............................. 13.9.3 Mark State and Break Detection (Asynchronous Mode Only) ............................ 13.9.4 Receive Error Flags and Transmit Operations (Clocked Synchronous Mode Only).......................................................................................................... 13.9.5 Restrictions on Use of DTC (H8S/2268 Group Only) ......................................... 13.9.6 Operation in Case of Mode Transition................................................................. 13.9.7 Switching from SCK Pin Function to Port Pin Function: .................................... 13.9.8 Assignment and Selection of Registers................................................................
354 357 359 361 361 361 363 364 365 365 369 370 372 372 373 374 374 374 374 375 375 376 379 380
Section 14 I2C Bus Interface (IIC) (Supported as an Option in H8S/2264 Group)....................................... 381
14.1 Features ............................................................................................................................. 14.2 Input/Output Pins .............................................................................................................. 14.3 Register Descriptions ........................................................................................................ 14.3.1 I2C Bus Data Register (ICDR) ............................................................................. 14.3.2 Slave Address Register (SAR) ............................................................................. 14.3.3 Second Slave Address Register (SARX) ............................................................. 14.3.4 I2C Bus Mode Register (ICMR)........................................................................... 14.3.5 Serial Control Register X (SCRX)....................................................................... 14.3.6 I2C Bus Control Register (ICCR)......................................................................... 14.3.7 I2C Bus Status Register (ICSR)............................................................................ 14.3.8 DDC Switch Register (DDCSWR) ...................................................................... 14.4 Operation...........................................................................................................................
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381 384 385 386 388 388 389 392 393 399 403 404
14.4.1 I2C Bus Data Format ............................................................................................ 14.4.2 Initial Setting........................................................................................................ 14.4.3 Master Transmit Operation .................................................................................. 14.4.4 Master Receive Operation.................................................................................... 14.4.5 Slave Receive Operation...................................................................................... 14.4.6 Slave Transmit Operation .................................................................................... 14.4.7 IRIC Setting Timing and SCL Control ................................................................ 14.4.8 Operation Using the DTC (H8S/2268 Group Only) ............................................ 14.4.9 Noise Canceler ..................................................................................................... 14.4.10 Initialization of Internal State .............................................................................. 14.5 Interrupt Source................................................................................................................. 14.6 Usage Notes ......................................................................................................................
404 406 406 410 415 420 423 424 425 425 427 427
Section 15 A/D Converter................................................................................................. 441
15.1 Features ............................................................................................................................. 15.2 Input/Output Pins .............................................................................................................. 15.3 Register Descriptions ........................................................................................................ 15.3.1 A/D Data Registers A to D (ADDRA to ADDRD).............................................. 15.3.2 A/D Control/Status Register (ADCSR) ............................................................... 15.3.3 A/D Control Register (ADCR) ............................................................................ 15.4 Interface to Bus Master ..................................................................................................... 15.5 Operation........................................................................................................................... 15.5.1 Single Mode......................................................................................................... 15.5.2 Scan Mode ........................................................................................................... 15.5.3 Input Sampling and A/D Conversion Time.......................................................... 15.5.4 External Trigger Input Timing ............................................................................. 15.6 Interrupt Source................................................................................................................. 15.7 A/D Conversion Accuracy Definitions ............................................................................. 15.8 Usage Notes ...................................................................................................................... 15.8.1 Module Stop Mode Setting .................................................................................. 15.8.2 Permissible Signal Source Impedance ................................................................. 15.8.3 Influences on Absolute Accuracy ........................................................................ 15.8.4 Range of Analog Power Supply and Other Pin Settings ...................................... 15.8.5 Notes on Board Design ........................................................................................ 15.8.6 Notes on Noise Countermeasures ........................................................................ 441 443 444 444 445 447 448 449 449 451 452 454 454 455 457 457 457 457 458 458 458
Section 16 D/A Converter................................................................................................. 461
16.1 Features ............................................................................................................................. 16.2 Input/Output Pins .............................................................................................................. 16.3 Register Description.......................................................................................................... 16.3.1 D/A Data Registers 0 and 1 (DADR0 and DADR1)............................................ 461 462 462 462
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16.3.2 D/A Control Register (DACR) ............................................................................ 463 16.4 Operation........................................................................................................................... 464 16.5 Usage Notes ...................................................................................................................... 465 16.5.1 Analog Power Supply Current in Power-Down Mode......................................... 465 16.5.2 Setting for Module Stop Mode............................................................................. 465
Section 17 LCD Controller/Driver ................................................................................. 17.1 Features ............................................................................................................................. 17.2 Input/Output Pins .............................................................................................................. 17.3 Register Descriptions ........................................................................................................ 17.3.1 LCD Port Control Register (LPCR)..................................................................... 17.3.2 LCD Control Register (LCR)............................................................................... 17.3.3 LCD Control Register 2 (LCR2).......................................................................... 17.4 Operation........................................................................................................................... 17.4.1 Settings up to LCD Display ................................................................................. 17.4.2 Relationship between LCD RAM and Display .................................................... 17.4.3 Triple Step-Up Voltage Circuit (Supported Only by the H8S/2268 Group)........ 17.4.4 Operation in Power-Down Modes ....................................................................... 17.4.5 Low-Power LCD Drive........................................................................................ 17.4.6 Boosting the LCD Drive Power Supply............................................................... Section 18 DTMF Generation Circuit ........................................................................... 18.1 Features ............................................................................................................................. 18.2 Input/Output Pins .............................................................................................................. 18.3 Register Descriptions ........................................................................................................ 18.3.1 DTMF Control Register (DTCR)......................................................................... 18.3.2 DTMF Load Register (DTLR) ............................................................................. 18.4 Operation........................................................................................................................... 18.4.1 Output Waveform ................................................................................................ 18.4.2 Operation Flow .................................................................................................... 18.5 Application Circuit Example............................................................................................. 18.6 Usage Notes ......................................................................................................................
467 467 469 470 470 474 476 480 480 481 486 487 488 490 491 491 492 493 493 494 495 495 496 497 497
Section 19 RAM .................................................................................................................. 499 Section 20 ROM .................................................................................................................. 501
20.1 20.2 20.3 20.4 20.5 Features ............................................................................................................................. Mode Transitions .............................................................................................................. Block Configuration.......................................................................................................... Input/Output Pins .............................................................................................................. Register Descriptions ........................................................................................................ 501 502 506 509 509
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20.6
20.7 20.8
20.9
20.10 20.11 20.12 20.13 20.14
20.5.1 Flash Memory Control Register 1 (FLMCR1)..................................................... 20.5.2 Flash Memory Control Register 2 (FLMCR2)..................................................... 20.5.3 Erase Block Register 1 (EBR1) ........................................................................... 20.5.4 Erase Block Register 2 (EBR2) ........................................................................... 20.5.5 RAM Emulation Register (RAMER)................................................................... 20.5.6 Flash Memory Power Control Register (FLPWCR) ............................................ 20.5.7 Serial Control Register X (SCRX)....................................................................... On-Board Programming Modes ........................................................................................ 20.6.1 Boot Mode ........................................................................................................... 20.6.2 Programming/Erasing in User Program Mode..................................................... Flash Memory Emulation in RAM.................................................................................... Flash Memory Programming/Erasing ............................................................................... 20.8.1 Program/Program-Verify ..................................................................................... 20.8.2 Erase/Erase-Verify............................................................................................... 20.8.3 Interrupt Handling when Programming/Erasing Flash Memory.......................... Program/Erase Protection.................................................................................................. 20.9.1 Hardware Protection ............................................................................................ 20.9.2 Software Protection.............................................................................................. 20.9.3 Error Protection.................................................................................................... Interrupt Handling when Programming/Erasing Flash Memory....................................... Programmer Mode ............................................................................................................ Power-Down States for Flash Memory............................................................................. Flash Memory Programming and Erasing Precautions ..................................................... Note on Switching from F-ZTAT Version to Masked ROM Version...............................
510 511 512 513 513 514 515 516 516 519 520 522 523 525 525 527 527 527 527 528 528 530 531 536 537 538 538 539 541 541 542 544 545 545 545 546 546 547 547 547
Section 21 Clock Pulse Generator .................................................................................. 21.1 Register Descriptions ........................................................................................................ 21.1.1 System Clock Control Register (SCKCR) ........................................................... 21.1.2 Low-Power Control Register (LPWRCR) ........................................................... 21.2 System Clock Oscillator.................................................................................................... 21.2.1 Connecting a Crystal Resonator........................................................................... 21.2.2 External Clock Input ............................................................................................ 21.2.3 Notes on Switching External Clock ..................................................................... 21.3 Duty Adjustment Circuit ................................................................................................... 21.4 Medium-Speed Clock Divider .......................................................................................... 21.5 Bus Master Clock Selection Circuit .................................................................................. 21.6 Subclock Oscillator ........................................................................................................... 21.6.1 Connecting 32.768-kHz Crystal Resonator.......................................................... 21.6.2 Handling Pins when Subclock not Required........................................................ 21.7 Subclock Waveform Generation Circuit ........................................................................... 21.8 Usage Notes ......................................................................................................................
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21.8.1 Note on Crystal Resonator ................................................................................... 547 21.8.2 Note on Board Design.......................................................................................... 548 21.8.3 Note on Using a Crystal Resonator...................................................................... 548
Section 22 Power-Down Modes...................................................................................... 549
22.1 Register Description.......................................................................................................... 22.1.1 Standby Control Register (SBYCR) .................................................................... 22.1.2 Module Stop Control Registers A to D (MSTPCRA to MSTPCRD) .................. 22.2 Medium-Speed Mode........................................................................................................ 22.3 Sleep Mode ....................................................................................................................... 22.3.1 Sleep Mode .......................................................................................................... 22.3.2 Exiting Sleep Mode.............................................................................................. 22.4 Software Standby Mode.................................................................................................... 22.4.1 Software Standby Mode....................................................................................... 22.4.2 Clearing Software Standby Mode ........................................................................ 22.4.3 Oscillation Settling Time after Clearing Software Standby Mode....................... 22.4.4 Software Standby Mode Application Example .................................................... 22.5 Hardware Standby Mode .................................................................................................. 22.5.1 Hardware Standby Mode ..................................................................................... 22.5.2 Clearing Hardware Standby Mode....................................................................... 22.5.3 Hardware Standby Mode Timing......................................................................... 22.6 Module Stop Mode ........................................................................................................... 22.7 Watch Mode...................................................................................................................... 22.7.1 Transition to Watch Mode ................................................................................... 22.7.2 Exiting Watch Mode ............................................................................................ 22.8 Sub-Sleep Mode................................................................................................................ 22.8.1 Transition to Sub-Sleep Mode ............................................................................. 22.8.2 Exiting Sub-Sleep Mode ...................................................................................... 22.9 Sub-Active Mode .............................................................................................................. 22.9.1 Transition to Sub-Active Mode............................................................................ 22.9.2 Exiting Sub-Active Mode .................................................................................... 22.10 Direct Transitions.............................................................................................................. 22.10.1 Direct Transitions from High-Speed Mode to Sub-Active Mode ........................ 22.10.2 Direct Transitions from Sub-Active Mode to High-Speed Mode ........................ 22.11 Usage Notes ...................................................................................................................... 22.11.1 I/O Port Status...................................................................................................... 22.11.2 Current Dissipation during Oscillation Settling Wait Period ............................... 22.11.3 DTC Module Stop (Supported Only by the H8S/2268 Group)............................ 22.11.4 On-Chip Peripheral Module Interrupt.................................................................. 22.11.5 Writing to MSTPCR ............................................................................................ 554 554 556 558 559 559 559 560 560 560 561 561 562 562 562 563 563 564 564 564 565 565 565 566 566 566 567 567 567 567 567 567 567 568 568
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22.11.6 Entering Subactive/Watch Mode and DTC Module Stop (Supported Only by H8S/2268 Group) ................................................................ 568
Section 23 Power Supply Circuit .................................................................................... 569
23.1 When Internal Power Step-Down Circuit Is Used ............................................................ 569
Section 24 List of Registers.............................................................................................. 571
24.1 Register Addresses (by Function Module, in Address Order) .......................................... 572 24.2 Register Bits...................................................................................................................... 580 24.3 Register States in Each Operating Mode........................................................................... 588
Section 25 Electrical Characteristics.............................................................................. 595
25.1 Power Supply Voltage and Operating Frequency Range .................................................. 25.2 Electrical Characteristics of H8S/2268 Group .................................................................. 25.2.1 Absolute Maximum Ratings ................................................................................ 25.2.2 DC Characteristics ............................................................................................... 25.2.3 AC Characteristics ............................................................................................... 25.2.4 A/D Conversion Characteristics........................................................................... 25.2.5 D/A Conversion Characteristics........................................................................... 25.2.6 LCD Characteristics............................................................................................. 25.2.7 DTMF Characteristics.......................................................................................... 25.2.8 Flash Memory Characteristics.............................................................................. 25.3 Electrical Characteristics of H8S/2264 Group .................................................................. 25.3.1 Absolute Maximum Ratings ................................................................................ 25.3.2 DC Characteristics ............................................................................................... 25.3.3 AC Characteristics ............................................................................................... 25.3.4 A/D Conversion Characteristics........................................................................... 25.3.5 LCD Characteristics............................................................................................. 25.4 Operation Timing.............................................................................................................. 25.4.1 Oscillator Settling Timing.................................................................................... 25.4.2 Control Signal Timings........................................................................................ 25.4.3 Timing of On-Chip Peripheral Modules .............................................................. 25.5 Usage Note........................................................................................................................ 595 597 597 598 608 613 614 615 616 617 619 619 620 629 634 635 636 636 636 637 639
Appendix A I/O Port States in Each Pin State ............................................................ 641
A.1 A.2 I/O Port State in Each Pin State of H8S/2268 Group........................................................ 641 I/O Port State in Each Pin State of H8S/2264 Group........................................................ 642
Appendix B Product Codes .............................................................................................. 644 Appendix C Package Dimensions................................................................................... 647
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Index
............................................................................................................................. 651
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Figures
Section 1 Figure 1.1 Figure 1.2 Figure 1.3 Figure 1.4 Overview Internal Block Diagram of H8S/2268 Group............................................................ Internal Block Diagram of H8S/2264 Group............................................................ Pin Arrangement of H8S/2268 Group ...................................................................... Pin Arrangement of H8S/2264 Group ......................................................................
3 4 5 6
Section 2 CPU Figure 2.1 Exception Vector Table (Normal Mode) .................................................................. Figure 2.2 Stack Structure in Normal Mode .............................................................................. Figure 2.3 Exception Vector Table (Advanced Mode) .............................................................. Figure 2.4 Stack Structure in Advanced Mode .......................................................................... Figure 2.5 Memory Map ............................................................................................................ Figure 2.6 CPU Registers .......................................................................................................... Figure 2.7 Usage of General Registers ...................................................................................... Figure 2.8 Stack Status .............................................................................................................. Figure 2.9 General Register Data Formats (1) ........................................................................... Figure 2.9 General Register Data Formats (2) ........................................................................... Figure 2.10 Memory Data Formats............................................................................................ Figure 2.11 Instruction Formats (Examples) ............................................................................. Figure 2.12 Branch Address Specification in Memory Indirect Mode ...................................... Figure 2.13 State Transitions ..................................................................................................... Figure 2.14 Flowchart of Access Method for Registers with Write-Only Bits..........................
17 17 18 19 20 21 22 23 26 27 28 40 44 48 52
Section 3 MCU Operating Modes Figure 3.1 Address Map (1)....................................................................................................... 57 Figure 3.1 Address Map (2)....................................................................................................... 58 Section 4 Figure 4.1 Figure 4.2 Figure 4.3 Section 5 Figure 5.1 Figure 5.2 Figure 5.3 Figure 5.4 Figure 5.5 Exception Handling Reset Sequence (Advanced Mode with On-chip ROM Enabled)............................. 62 Stack Status after Exception Handling (Advanced Mode) ....................................... 65 Operation when SP Value Is Odd............................................................................. 66 Interrupt Controller Block Diagram of Interrupt Controller for H8S/2268 Group ................................... Block Diagram of Interrupt Controller for H8S/2264 Group ................................... Block Diagram of IRQn Interrupts ........................................................................... Set Timing for IRQnF .............................................................................................. Block Diagram of Interrupts WKP7 to WKP0 .........................................................
68 69 81 82 83
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Figure 5.6 IWPFn Setting Timing ............................................................................................. Figure 5.7 Block Diagram of Interrupt Control Operation for H8S/2268 Group ...................... Figure 5.8 Block Diagram of Interrupt Control Operation for H8S/2264 Group ...................... Figure 5.9 Flowchart of Procedure Up to Interrupt Acceptance in Interrupt Control Mode 0.. Figure 5.10 Flowchart of Procedure Up to Interrupt Acceptance in Control Mode 2................ Figure 5.11 Interrupt Exception Handling ................................................................................. Figure 5.12 DTC and Interrupt Controller ................................................................................. Figure 5.13 Contention between Interrupt Generation and Disabling .......................................
83 89 90 93 95 96 99 101
Section 6 PC Break Controller (PBC) Figure 6.1 Block Diagram of PC Break Controller.................................................................... 104 Figure 6.2 Operation in Power-Down Mode Transitions........................................................... 108 Section 7 Figure 7.1 Figure 7.2 Figure 7.3 Bus Controller On-Chip Memory Access Cycle............................................................................... 111 On-Chip Peripheral Module Access Cycle (H'FFFDAC to H'FFFFBF) .................. 112 On-Chip Peripheral Module Access Cycle (H'FFFC30 to H'FFFCA3).................... 113
Section 8 Data Transfer Controller (DTC) Figure 8.1 Block Diagram of DTC ............................................................................................ Figure 8.2 Block Diagram of DTC Activation Source Control ................................................. Figure 8.3 The Location of DTC Register Information in Address Space................................. Figure 8.4 Correspondence between DTC Vector Address and Register Information .............. Figure 8.5 Flowchart of DTC Operation.................................................................................... Figure 8.6 Memory Mapping in Normal Mode ......................................................................... Figure 8.7 Memory Mapping in Repeat Mode .......................................................................... Figure 8.8 Memory Mapping in Block Transfer Mode.............................................................. Figure 8.9 Chain Transfer Operation ......................................................................................... Figure 8.10 DTC Operation Timing (Example in Normal Mode or Repeat Mode)................... Figure 8.11 DTC Operation Timing (Example of Block Transfer Mode, with Block Size of 2) ................................................................................................................ Figure 8.12 DTC Operation Timing (Example of Chain Transfer) ...........................................
116 123 124 124 127 128 129 130 131 132 133 133
Section 9 I/O Ports Figure 9.1 Types of Open Drain Outputs................................................................................... 153 Section 10 Figure 10.1 Figure 10.2 Figure 10.3 Figure 10.4 16-Bit Timer Pulse Unit (TPU) Block Diagram of TPU for H8S/2268 Group......................................................... Block Diagram of TPU for H8S/2264 Group......................................................... 16-Bit Register Access Operation [Bus Master TCNT (16 Bits)] ..................... 8-Bit Register Access Operation [Bus Master TCR (Upper 8 Bits)] .................
186 187 214 214
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Figure 10.5 8-Bit Register Access Operation [Bus Master TMDR (Lower 8 Bits)]............. Figure 10.6 8-Bit Register Access Operation [Bus Master TCR and TMDR (16 Bits)]....... Figure 10.7 Example of Counter Operation Setting Procedure ................................................. Figure 10.8 Free-Running Counter Operation ........................................................................... Figure 10.9 Periodic Counter Operation .................................................................................... Figure 10.10 Example of Setting Procedure for Waveform Output by Compare Match ........... Figure 10.11 Example of 0 Output/1 Output Operation............................................................. Figure 10.12 Example of Toggle Output Operation .................................................................. Figure 10.13 Example of Input Capture Operation Setting Procedure ...................................... Figure 10.14 Example of Input Capture Operation.................................................................... Figure 10.15 Example of Synchronous Operation Setting Procedure........................................ Figure 10.16 Example of Synchronous Operation..................................................................... Figure 10.17 Compare Match Buffer Operation ........................................................................ Figure 10.18 Input Capture Buffer Operation............................................................................ Figure 10.19 Example of Buffer Operation Setting Procedure.................................................. Figure 10.20 Example of Buffer Operation (1).......................................................................... Figure 10.21 Example of Buffer Operation (2).......................................................................... Figure 10.22 Example of PWM Mode Setting Procedure ......................................................... Figure 10.23 Example of PWM Mode Operation (1) ................................................................ Figure 10.24 Example of PWM Mode Operation (2) ................................................................ Figure 10.25 Example of PWM Mode Operation (3) ................................................................ Figure 10.26 Example of Phase Counting Mode Setting Procedure.......................................... Figure 10.27 Example of Phase Counting Mode 1 Operation ................................................... Figure 10.28 Example of Phase Counting Mode 2 Operation ................................................... Figure 10.29 Example of Phase Counting Mode 3 Operation ................................................... Figure 10.30 Example of Phase Counting Mode 4 Operation ................................................... Figure 10.31 Count Timing in Internal Clock Operation........................................................... Figure 10.32 Count Timing in External Clock Operation.......................................................... Figure 10.33 Output Compare Output Timing........................................................................... Figure 10.34 Input Capture Input Signal Timing....................................................................... Figure 10.35 Counter Clear Timing (Compare Match).............................................................. Figure 10.36 Counter Clear Timing (Input Capture) ................................................................. Figure 10.37 Buffer Operation Timing (Compare Match)......................................................... Figure 10.38 Buffer Operation Timing (Input Capture) ............................................................ Figure 10.39 TGI Interrupt Timing (Compare Match) .............................................................. Figure 10.40 TGI Interrupt Timing (Input Capture) .................................................................. Figure 10.41 TCIV Interrupt Setting Timing............................................................................. Figure 10.42 TCIU Interrupt Setting Timing (H8S/2268 Group Only) ..................................... Figure 10.43 Timing for Status Flag Clearing by CPU ............................................................. Figure 10.44 Timing for Status Flag Clearing by DTC Activation (H8S/2268 Group Only)....
215 215 216 217 218 218 219 219 220 220 221 222 223 223 224 225 226 228 229 229 230 231 232 233 234 235 238 238 239 239 240 240 241 241 242 243 243 244 244 245
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Figure 10.45 Phase Difference, Overlap, and Pulse Width in Phase Counting Mode (H8S/2268 Group Only) ....................................................................................... Figure 10.46 Contention between TCNT Write and Clear Operations...................................... Figure 10.47 Contention between TCNT Write and Increment Operations .............................. Figure 10.48 Contention between TGR Write and Compare Match.......................................... Figure 10.49 Contention between Buffer Register Write and Compare Match ......................... Figure 10.50 Contention between TGR Read and Input Capture .............................................. Figure 10.51 Contention between TGR Write and Input Capture ............................................. Figure 10.52 Contention between Buffer Register Write and Input Capture............................. Figure 10.53 Contention between Overflow and Counter Clearing........................................... Figure 10.54 Contention between TCNT Write and Overflow.................................................. Section 11 8-Bit Timers Figure 11.1 Block Diagram of 8-Bit Timer Module .................................................................. Figure 11.2 Example of Pulse Output........................................................................................ Figure 11.3 Count Timing for Internal Clock Input................................................................... Figure 11.4 Count Timing for External Clock Input.................................................................. Figure 11.5 Timing of CMF Setting .......................................................................................... Figure 11.6 Timing of Timer Output ......................................................................................... Figure 11.7 Timing of Compare-Match Clear ........................................................................... Figure 11.8 Timing of Clearing by External Reset Input........................................................... Figure 11.9 Timing of OVF Setting........................................................................................... Figure 11.10 Contention between TCNT Write and Clear ........................................................ Figure 11.11 Contention between TCNT Write and Increment................................................. Figure 11.12 Contention between TCOR Write and Compare-Match....................................... Figure 11.13 Block Diagram of 8-Bit Reload Timer ................................................................. Figure 11.14 Operation in Interval Timer Mode........................................................................ Figure 11.15 Operation in Automatic Reload Timer Mode ....................................................... Figure 11.16 Channel Relationship of Cascaded Connection.................................................... Section 12 Figure 12.1 Figure 12.2 Figure 12.3 Figure 12.4 Figure 12.5 Figure 12.6 Figure 12.7 Figure 12.8 Figure 12.9 Watchdog Timer (WDT) Block Diagram of WDT_0 ..................................................................................... Block Diagram of WDT_1 ..................................................................................... Watchdog Timer Mode Operation.......................................................................... Interval Timer Mode Operation.............................................................................. Timing of OVF Setting........................................................................................... Timing of WOVF Setting ....................................................................................... Writing to TCNT, TCSR (WDT_0) ....................................................................... Writing to RSTCSR................................................................................................ Contention between TCNT Write and Increment...................................................
246 247 247 248 249 250 251 252 253 254
256 266 267 267 268 268 269 269 270 273 274 275 279 282 283 284
288 288 295 295 296 296 297 298 299
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Section 13 Figure 13.1 Figure 13.2 Figure 13.3 Figure 13.4 Figure 13.5
Serial Communication Interface (SCI) Block Diagram of SCI_0 ........................................................................................ Block Diagram of SCI_1 or SCI_2......................................................................... Example of Internal Base Clock when Average Transfer Rate Is Selected (1) ...... Example of Internal Base Clock when Average Transfer Rate Is Selected (2) ...... Data Format in Asynchronous Communication (Example with 8-Bit Data, Parity, Two Stop Bits) ............................................................................................ Figure 13.6 Receive Data Sampling Timing in Asynchronous Mode ....................................... Figure 13.7 Relationship between Output Clock and Transfer Data Phase (Asynchronous Mode)............................................................................................ Figure 13.8 Sample SCI Initialization Flowchart ...................................................................... Figure 13.9 Example of Operation in Transmission in Asynchronous Mode (Example with 8-Bit Data, Parity, One Stop Bit) ................................................................... Figure 13.10 Sample Serial Transmission Flowchart ................................................................ Figure 13.11 Example of SCI Operation in Reception (Example with 8-Bit Data, Parity, One Stop Bit).......................................................................................................... Figure 13.12 Sample Serial Reception Data Flowchart (1) ....................................................... Figure 13.12 Sample Serial Reception Data Flowchart (2) ....................................................... Figure 13.13 Example of Communication Using Multiprocessor Format (Transmission of Data H'AA to Receiving Station A) ....................................................................... Figure 13.14 Sample Multiprocessor Serial Transmission Flowchart ....................................... Figure 13.15 Example of SCI Operation in Reception (Example with 8-Bit Data, Multiprocessor Bit, One Stop Bit).......................................................................... Figure 13.16 Sample Multiprocessor Serial Reception Flowchart (1)....................................... Figure 13.16 Sample Multiprocessor Serial Reception Flowchart (2)....................................... Figure 13.17 Data Format in Synchronous Communication (For LSB-First)............................ Figure 13.18 Sample SCI Initialization Flowchart .................................................................... Figure 13.19 Sample SCI Transmission Operation in Clocked Synchronous Mode ................. Figure 13.20 Sample Serial Transmission Flowchart ................................................................ Figure 13.21 Example of SCI Operation in Reception .............................................................. Figure 13.22 Sample Serial Reception Flowchart...................................................................... Figure 13.23 Sample Flowchart of Simultaneous Serial Transmit and Receive Operations...... Figure 13.24 Schematic Diagram of Smart Card Interface Pin Connections............................. Figure 13.25 Normal Smart Card Interface Data Format........................................................... Figure 13.26 Direct Convention (SDIR = SINV = O/E = 0) ..................................................... Figure 13.27 Inverse Convention (SDIR = SINV = O/E = 1).................................................... Figure 13.28 Receive Data Sampling Timing in Smart Card Mode (Using Clock of 372 Times the Transfer Rate) ........................................................................................ Figure 13.29 Retransfer Operation in SCI Transmit Mode........................................................ Figure 13.30 TEND Flag Generation Timing in Transmission Operation................................. Figure 13.31 Example of Transmission Processing Flow..........................................................
303 304 334 335 336 338 339 340 341 342 343 345 346 348 349 350 351 352 353 354 355 356 357 358 360 361 362 362 362 364 366 367 368
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Figure 13.32 Figure 13.33 Figure 13.34 Figure 13.35 Figure 13.36 Figure 13.37 Figure 13.38 Figure 13.39 Figure 13.40 Figure 13.41 Figure 13.42
Retransfer Operation in SCI Receive Mode ......................................................... Example of Reception Processing Flow ............................................................... Timing for Fixing Clock Output Level................................................................. Clock Halt and Restart Procedure ........................................................................ Example of Clocked Synchronous Transmission by DTC ................................... Sample Flowchart for Mode Transition during Transmission .............................. Asynchronous Transmission Using Internal Clock .............................................. Synchronous Transmission Using Internal Clock................................................. Sample Flowchart for Mode Transition during Reception ................................... Operation when Switching from SCK Pin Function to Port Pin Function ........... Operation when Switching from SCK Pin Function to Port Pin Function (Example of Preventing Low-Level Output).........................................................
370 370 371 372 375 377 377 378 378 379 380
Section 14 Figure 14.1 Figure 14.2 Figure 14.3 Figure 14.4 Figure 14.5 Figure 14.6 Figure 14.7 Figure 14.8 Figure 14.9
I2C Bus Interface (IIC) (Supported as an Option in H8S/2264 Group) Block Diagram of I2C Bus Interface....................................................................... 383 I2C Bus Interface Connections (Example: This LSI as Master) ............................. 384 I2C Bus Data Formats (I2C Bus Formats) ............................................................... 404 I2C Bus Data Format (Clocked Synchronous Serial Format) ................................. 404 I2C Bus Timing....................................................................................................... 405 Flowchart for IIC Initialization (Example)............................................................. 406 Flowchart for Master Transmit Mode (Example)................................................... 407 Example of Master Transmit Mode Operation Timing (MLS = WAIT = 0).......... 409 Example of Master Transmit Mode Stop Condition Generation Timing (MLS = WAIT = 0) ................................................................................................ 410 Figure 14.10 Flowchart for Master Receive Mode (Receiving Multiple Bytes) (WAIT = 1) (Example) .............................................................................................................. 411 Figure 14.11 Flowchart for Master Receive Mode (Receiving 1 Byte) (WAIT = 1) (Example) 412 Figure 14.12 Example of Master Receive Mode Operation Timing (MLS = ACKB = 0, WAIT = 1).............................................................................................................. 414 Figure 14.13 Example of Master Receive Mode Stop Condition Generation Timing (MLS = ACKB = 0, WAIT = 1)............................................................................ 415 Figure 14.14 Flowchart for Slave Transmit Mode (Example) ................................................... 416 Figure 14.15 Example of Slave Receive Mode Operation Timing (1) (MLS = ACKB = 0) ..... 418 Figure 14.16 Example of Slave Receive Mode Operation Timing (2) (MLS = ACKB = 0) ..... 419 Figure 14.17 Sample Flowchart for Slave Transmit Mode........................................................ 420 Figure 14.18 Example of Slave Transmit Mode Operation Timing (MLS = 0)......................... 422 Figure 14.19 IRIC Setting Timing and SCL Control................................................................. 423 Figure 14.20 Block Diagram of Noise Cancellor....................................................................... 425 Figure 14.21 Points for Attention Concerning Reading of Master Receive Data ...................... 431 Figure 14.22 Flowchart and Timing of Start Condition Instruction Issuance for Retransmission ..................................................................................................... 433
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Figure 14.23 Figure 14.24 Figure 14.25 Figure 14.26 Figure 14.27 Figure 14.28 Section 15 Figure 15.1 Figure 15.2 Figure 15.3 Figure 15.4
Timing of Stop Condition Issuance ...................................................................... IRIC Flag Clearance in WAIT = 1 Status............................................................. ICDR Read and ICCR Access Timing in Slave Transmit Mode.......................... TRS Bit Setting Timing in Slave Mode................................................................ Diagram of Erroneous Operation when Arbitration Is Lost ................................. Timing of IRIC Flag Clearing during Wait Operation .........................................
434 434 435 436 438 439
A/D Converter Block Diagram of A/D Converter........................................................................... Access to ADDR (When Reading H'AA40)........................................................... Example of A/D Converter Operation (Single Mode, Channel 1 Selected) ........... Example of A/D Converter Operation (Scan Mode, Channels AN0 to AN2 Selected) ................................................................................................................. Figure 15.5 A/D Conversion Timing ......................................................................................... Figure 15.6 External Trigger Input Timing ............................................................................... Figure 15.7 A/D Conversion Accuracy Definitions (1) ............................................................. Figure 15.8 A/D Conversion Accuracy Definitions (2) ............................................................. Figure 15.9 Example of Analog Input Circuit ........................................................................... Figure 15.10 Example of Analog Input Protection Circuit ........................................................ Figure 15.11 Analog Input Pin Equivalent Circuit ....................................................................
442 448 450 451 452 454 456 456 457 459 459
Section 16 D/A Converter Figure 16.1 Block Diagram of D/A Converter........................................................................... 461 Figure 16.2 D/A Converter Operation Example ........................................................................ 465 Section 17 LCD Controller/Driver Figure 17.1 Block Diagram of LCD Controller/Driver.............................................................. Figure 17.2 A Waveform 1/2 Duty 1/2 Vias.............................................................................. Figure 17.3 Handling of LCD Drive Power Supply when Using 1/2 Duty ............................... Figure 17.4 LCD RAM Map (1/4 Duty) .................................................................................... Figure 17.5 LCD RAM Map (1/3 Duty) .................................................................................... Figure 17.6 LCD RAM Map (1/2 Duty) .................................................................................... Figure 17.7 LCD RAM Map (Static Mode)............................................................................... Figure 17.8 Output Waveforms for Each Duty Cycle (A Waveform) ....................................... Figure 17.9 Output Waveforms for Each Duty Cycle (B Waveform) ....................................... Figure 17.10 Connection when Triple Step-Up Voltage Circuit Used (Supported Only by the H8S/2268 Group) ............................................................................................. Figure 17.11 Example of Low-Power-Consumption LCD Drive Operation ............................. Figure 17.12 Connection of External Split-Resistance .............................................................. Section 18 DTMF Generation Circuit
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468 478 480 482 482 483 483 484 485 487 489 490
Figure 18.1 Figure 18.2 Figure 18.3 Figure 18.4 Figure 18.5
DTMF Frequencies................................................................................................. DTMF Generation Circuit Diagram ....................................................................... TONED Pin Output Equivalent Circuit.................................................................. TONED Pin Output Waveform (Row or Column Group Alone) ........................... Example of HA16808ANT Connection .................................................................
491 492 495 495 497
Section 20 ROM Figure 20.1 Block Diagram of Flash Memory ........................................................................... Figure 20.2 Flash Memory State Transitions............................................................................. Figure 20.3 Boot Mode.............................................................................................................. Figure 20.4 User Program Mode (Example).............................................................................. Figure 20.5 Flash Memory Block Configuration (H8S/2268) ................................................... Figure 20.6 Flash Memory Block Configuration (H8S/2266 and H8S/2265) ........................... Figure 20.7 Programming/Erasing Flowchart Example in User Program Mode ....................... Figure 20.8 Flowchart for Flash Memory Emulation in RAM .................................................. Figure 20.9 Example of RAM Overlap Operation..................................................................... Figure 20.10 Program/Program-Verify Flowchart..................................................................... Figure 20.11 Erase/Erase-Verify Flowchart .............................................................................. Figure 20.12 Socket Adapter Pin Correspondence Diagram ..................................................... Figure 20.13 Power-On/Off Timing (Boot Mode)..................................................................... Figure 20.14 Power-On/Off Timing (User Program Mode) ...................................................... Figure 20.15 Mode Transition Timing (Example: Boot Mode User Mode User Program Mode) .................................................................................................... Section 21 Clock Pulse Generator Figure 21.1 Block Diagram of Clock Pulse Generator .............................................................. Figure 21.2 Connection of Crystal Resonator (Example) .......................................................... Figure 21.3 Crystal Resonator Equivalent Circuit ..................................................................... Figure 21.4 External Clock Input (Examples) ........................................................................... Figure 21.5 External Clock Input Timing.................................................................................. Figure 21.6 External Clock Switching Circuit (Examples)........................................................ Figure 21.7 External Clock Switching Timing (Examples) ....................................................... Figure 21.8 Example Connection of 32.768-kHz Crystal Resonator......................................... Figure 21.9 Equivalence Circuit for 32.768-kHz Crystal Resonator ......................................... Figure 21.10 Pin Handling When Subclock Not Required ........................................................ Figure 21.11 Note on Board Design of Oscillator Circuit ......................................................... Section 22 Figure 22.1 Figure 22.2 Figure 22.3
502 503 504 505 507 508 519 520 522 524 526 529 533 534 535
537 541 542 542 544 544 545 546 546 547 548
Power-Down Modes Mode Transition Diagram ...................................................................................... 552 Medium-Speed Mode Transition and Clearance Timing........................................ 559 Software Standby Mode Application Example ...................................................... 562
Rev. 4.00 Mar 21, 2006 page lxii of lxviii
Figure 22.4 Hardware Standby Mode Timing ........................................................................... 563 Section 23 Power Supply Circuit Figure 23.1 Power Supply Connections When Internal Power Supply Step-Down Circuit Is Used........................................................................................................................ 569 Section 25 Electrical Characteristics Figure 25.1 Power Supply Voltage and Operating Ranges (1) .................................................. Figure 25.1 Power Supply Voltage and Operating Ranges (2) .................................................. Figure 25.2 Output Load Circuit................................................................................................ Figure 25.3 Output Load Circuit................................................................................................ Figure 25.4 Oscillator Settling Timing ...................................................................................... Figure 25.5 Reset Input Timing ................................................................................................. Figure 25.6 Interrupt Input Timing ............................................................................................ Figure 25.7 TPU Clock Input Timing........................................................................................ Figure 25.8 8-Bit Timer Clock Input Timing............................................................................. Figure 25.9 SCK Clock Input Timing........................................................................................ Figure 25.10 SCI Input/Output Timing (Clock Synchronous Mode) ........................................ Figure 25.11 I2C Bus Interface Input/Output Timing (Option).................................................. Figure 25.12 TONED Load Circuit (Supported Only by the H8S/2268 Group) .......................
595 596 608 629 636 636 637 637 637 637 638 638 639
Appendix C Package Dimensions Figure C.1 TFP-100B Package Dimensions (H8S/2268 Group Only) ...................................... 647 Figure C.2 TFP-100G Package Dimensions .............................................................................. 648 Figure C.3 FP-100B Package Dimensions................................................................................. 649
Rev. 4.00 Mar 21, 2006 page lxiii of lxviii
Tables
Section 1 Overview Table 1.1 Pin Functions.......................................................................................................... Section 2 CPU Table 2.1 Instruction Classification........................................................................................ Table 2.2 Operation Notation ................................................................................................. Table 2.3 Data Transfer Instructions ...................................................................................... Table 2.4 Arithmetic Operations Instructions (1)................................................................... Table 2.4 Arithmetic Operations Instructions (2)................................................................... Table 2.5 Logic Operations Instructions ................................................................................ Table 2.6 Shift Instructions .................................................................................................... Table 2.7 Bit Manipulation Instructions (1) ........................................................................... Table 2.7 Bit Manipulation Instructions (2) ........................................................................... Table 2.8 Branch Instructions................................................................................................. Table 2.9 System Control Instructions ................................................................................... Table 2.10 Block Data Transfer Instructions............................................................................ Table 2.11 Addressing Modes.................................................................................................. Table 2.12 Absolute Address Access Ranges .......................................................................... Table 2.13 Effective Address Calculation (1) .......................................................................... Table 2.13 Effective Address Calculation (2) ..........................................................................
7
29 30 31 32 33 34 34 35 36 37 38 39 41 42 45 46
Section 3 MCU Operating Modes Table 3.1 MCU Operating Mode Selection............................................................................ 55 Section 4 Exception Handling Table 4.1 Exception Types and Priority ................................................................................. Table 4.2 Exception Handling Vector Table .......................................................................... Table 4.3 Status of CCR and EXR after Trace Exception Handling ...................................... Table 4.4 Status of CCR and EXR* after Trap Instruction Exception Handling ................... Section 5 Interrupt Controller Table 5.1 Pin Configuration ................................................................................................... Table 5.2 Interrupt Sources, Vector Addresses, and Interrupt Priorities ................................ Table 5.3 Interrupt Control Modes......................................................................................... Table 5.4 Interrupts Selected in Each Interrupt Control Mode (1) ......................................... Table 5.5 Interrupts Selected in Each Interrupt Control Mode (2) ......................................... Table 5.6 Operations and Control Signal Functions in Each Interrupt Control Mode ........... Table 5.7 Interrupt Response Times (States)..........................................................................
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59 60 63 64
70 85 89 90 90 91 97
Table 5.8 Table 5.9
Number of States in Interrupt Handling Routine Execution Status........................ 98 Interrupt Source Selection and Clear Control......................................................... 100
Section 8 Data Transfer Controller (DTC) Table 8.1 Activation Source and DTCER Clearing................................................................ Table 8.2 Interrupt Sources, DTC Vector Addresses, and Corresponding DTCEs ................ Table 8.3 Register Information in Normal Mode ................................................................... Table 8.4 Register Information in Repeat Mode .................................................................... Table 8.5 Register Information in Block Transfer Mode ....................................................... Table 8.6 DTC Execution Status ............................................................................................ Table 8.7 Number of States Required for Each Execution Status ..........................................
122 125 128 129 130 134 134
Section 9 I/O Ports Table 9.1 H8S/2268 Group Port Functions (1)....................................................................... 140 Table 9.1 H8S/2264 Group Port Functions (2)....................................................................... 143 Table 9.2 Input Pull-Up MOS States (Port J)......................................................................... 171 Section 10 Table 10.1 Table 10.2 Table 10.3 Table 10.4 Table 10.5 Table 10.6 Table 10.7 Table 10.8 Table 10.9 Table 10.10 Table 10.11 Table 10.12 Table 10.13 Table 10.14 Table 10.15 Table 10.16 Table 10.17 Table 10.18 Table 10.19 Table 10.20 Table 10.21 Table 10.22 Table 10.23 16-Bit Timer Pulse Unit (TPU) TPU Functions........................................................................................................ TPU Pins188 CCLR0 to CCLR2 (Channel 0) (H8S/2268 Group Only) ...................................... CCLR0 to CCLR2 (Channels 1 and 2)................................................................... TPSC0 to TPSC2 (Channel 0) (H8S/2268 Group Only) ........................................ TPSC0 to TPSC2 (Channel 1)................................................................................ TPSC0 to TPSC2 (Channel 2)................................................................................ MD0 to MD3.......................................................................................................... TIORH_0 (Channel 0) (H8S/2268 Group Only) .................................................... TIORL_0 (Channel 0) (H8S/2268 Group Only) .................................................... TIOR_1 (Channel 1)............................................................................................... TIOR_2 (Channel 2)............................................................................................... TIORH_0 (Channel 0) (H8S/2268 Group Only) .................................................... TIORL_0 (Channel 0) (H8S/2268 Group Only) .................................................... TIOR_1 (Channel 1)............................................................................................... TIOR_2 (Channel 2)............................................................................................... Register Combinations in Buffer Operation ........................................................... PWM Output Registers and Output Pins................................................................ Phase Counting Mode Clock Input Pins................................................................. Up/Down-Count Conditions in Phase Counting Mode 1 ....................................... Up/Down-Count Conditions in Phase Counting Mode 2 ....................................... Up/Down-Count Conditions in Phase Counting Mode 3 ....................................... Up/Down-Count Conditions in Phase Counting Mode 4 .......................................
184 191 191 192 192 193 195 197 198 199 200 201 202 203 204 223 227 231 232 233 234 235
Rev. 4.00 Mar 21, 2006 page lxv of lxviii
Table 10.24 TPU Interrupts........................................................................................................ 236 Section 11 8-Bit Timers Table 11.1 Pin Configuration ................................................................................................... Table 11.2 8-Bit Timer Interrupt Sources ................................................................................ Table 11.3 Timer Output Priorities .......................................................................................... Table 11.4 Switching of Internal Clock and TCNT Operation.................................................
257 272 275 276
Section 12 Watchdog Timer (WDT) Table 12.1 WDT Interrupt Source............................................................................................ 297 Section 13 Serial Communication Interface (SCI) Table 13.1 Pin Configuration ................................................................................................... Table 13.2 The Relationships between the N Setting in BRR and Bit Rate B ......................... Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode) (1)............................. Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode) (2)............................. Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode) (3)............................. Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode) (4)............................. Table 13.4 Maximum Bit Rate for Each Frequency (Asynchronous Mode) ............................ Table 13.5 Maximum Bit Rate with External Clock Input (Asynchronous Mode) .................. Table 13.6 BRR Settings for Various Bit Rates (Clocked Synchronous Mode) ...................... Table 13.7 Maximum Bit Rate with External Clock Input (Clocked Synchronous Mode)...... Table 13.8 Examples of Bit Rate for Various BRR Settings (Smart Card Interface Mode) (When n = 0 and S = 372) ...................................................................................... Table 13.9 Maximum Bit Rate at Various Frequencies (Smart Card Interface Mode) (When S = 372) ...................................................................................................... Table 13.10 Serial Transfer Formats (Asynchronous Mode) ..................................................... Table 13.11 SSR Status Flags and Receive Data Handling........................................................ Table 13.12 Interrupt Sources of Serial Communication Interface Mode.................................. Table 13.13 Interrupt Sources in Smart Card Interface Mode.................................................... Section 14 I2C Bus Interface (IIC) (Supported as an Option in H8S/2264 Group) Table 14.1 Pin Configuration ................................................................................................... Table 14.2 Transfer Format...................................................................................................... Table 14.3 I2C Transfer Rate.................................................................................................... Table 14.4 Flags and Transfer States ....................................................................................... Table 14.5 Flags and Transfer States ....................................................................................... Table 14.6 IIC Interrupt Source................................................................................................ Table 14.7 I2C Bus Timing (SCL and SDA Output) ................................................................ Table 14.8 Permissible SCL Rise Time (tsr) Values................................................................. Table 14.9 I2C Bus Timing (with Maximum Influence of tSr/tSf) .............................................
Rev. 4.00 Mar 21, 2006 page lxvi of lxviii
305 324 325 326 327 328 328 329 330 330 331 331 337 344 373 374
384 389 391 398 424 427 428 429 430
Section 15 A/D Converter Table 15.1 Pin Configuration ................................................................................................... Table 15.2 Analog Input Channels and Corresponding ADDR Registers................................ Table 15.3 A/D Conversion Time (Single Mode) .................................................................... Table 15.4 A/D Conversion Time (Scan Mode)....................................................................... Table 15.5 A/D Converter Interrupt Source ............................................................................. Table 15.6 Analog Pin Specifications ......................................................................................
443 444 453 453 454 459
Section 16 D/A Converter Table 16.1 Pin Configuration ................................................................................................... 462 Table 16.2 D/A Conversion Control ........................................................................................ 464 Section 17 LCD Controller/Driver Table 17.1 Pin Configuration ................................................................................................... Table 17.2 Duty Cycle and Common Function Selection ........................................................ Table 17.3 Segment Driver Selection (1) (H8S/2268 Group) .................................................. Table 17.4 Segment Driver Selection (2) (H8S/2264 Group) .................................................. Table 17.5 Frame Frequency Selection .................................................................................... Table 17.6 Output Levels ......................................................................................................... Table 17.7 Power-Down Modes and Display Operation..........................................................
469 471 472 473 475 486 488
Section 18 DTMF Generation Circuit Table 18.1 Pin Configuration ................................................................................................... 492 Table 18.2 Frequency Deviation between DTMF Output Signals and Typical Signals........... 496 Section 20 ROM Table 20.1 Differences between Boot Mode and User Program Mode.................................... Table 20.2 Pin Configuration ................................................................................................... Table 20.3 Setting On-Board Programming Modes ................................................................. Table 20.4 Boot Mode Operation............................................................................................. Table 20.5 System Clock Frequencies for which Automatic Adjustment of LSI Bit Rate Is Possible ................................................................................................................ Table 20.6 Flash Memory Operating States ............................................................................. Table 20.7 Registers Present in F-ZTAT Version but Absent in Masked ROM Version ........ Section 21 Clock Pulse Generator Table 21.1 Damping Resistance Value..................................................................................... Table 21.2 Crystal Resonator Characteristics........................................................................... Table 21.3 External Clock Input Conditions ............................................................................ Table 21.4 External Clock Input Conditions (Duty Adjustment Circuit Not Used).................
503 509 516 518 518 530 536
542 542 543 543
Rev. 4.00 Mar 21, 2006 page lxvii of lxviii
Section 22 Power-Down Modes Table 22.1 LSI Internal States in Each Mode........................................................................... 550 Table 22.2 Low Power Dissipation Mode Transition Conditions ............................................ 553 Table 22.3 Oscillation Settling Time Settings.......................................................................... 561 Section 25 Table 25.1 Table 25.2 Table 25.2 Table 25.2 Table 25.2 Table 25.3 Table 25.4 Table 25.4 Table 25.5 Table 25.6 Table 25.7 Table 25.9 Table 25.10 Table 25.11 Table 25.12 Table 25.13 Table 25.14 Table 25.15 Table 25.15 Table 25.15 Table 25.15 Table 25.16 Table 25.17 Table 25.17 Table 25.18 Table 25.19 Table 25.20 Table 25.21 Table 25.22 Table 25.23 Electrical Characteristics Absolute Maximum Ratings................................................................................... DC Characteristics (1) ............................................................................................ DC Characteristics (2) ............................................................................................ DC Characteristics (3) ............................................................................................ DC Characteristics (4) ............................................................................................ Permissible Output Currents................................................................................... Bus Drive Characteristics (1) ................................................................................. Bus Drive Characteristics (2) ................................................................................. Clock Timing.......................................................................................................... Control Signal Timing............................................................................................ Timing of On-Chip Peripheral Modules................................................................. A/D Conversion Characteristics ............................................................................. D/A Conversion Characteristics ............................................................................. LCD Characteristics ............................................................................................... DTMF Characteristics ............................................................................................ Flash Memory Characteristics................................................................................ Absolute Maximum Ratings................................................................................... DC Characteristics (1) ............................................................................................ DC Characteristics (2) ............................................................................................ DC Characteristics (3) ............................................................................................ DC Characteristics (4) ............................................................................................ Permissible Output Currents................................................................................... Bus Drive Characteristics (1) ................................................................................. Bus Drive Characteristics (2) ................................................................................. Clock Timing.......................................................................................................... Control Signal Timing............................................................................................ Timing of On-Chip Peripheral Modules................................................................. I2C Bus Timing....................................................................................................... A/D Conversion Characteristics ............................................................................. LCD Characteristics ...............................................................................................
597 598 600 602 604 606 607 608 609 610 612 613 614 615 616 617 619 620 622 623 625 627 628 629 630 631 632 633 634 635
Rev. 4.00 Mar 21, 2006 page lxviii of lxviii
Section 1 Overview
Section 1 Overview
1.1 Features
* High-speed H8S/2000 central processing unit with an internal 16-bit architecture Upward-compatible with H8/300 and H8/300H CPUs on an object level Sixteen 16-bit general registers 65 basic instructions * Various peripheral functions Interrupt controller PC break controller (supported only by the H8S/2268 Group) Data transfer controller (DTC) (supported only by the H8S/2268 Group) 16-bit timer-pulse unit (TPU) 8-bit timer (TMR) Watchdog timer (WDT) Serial communication interface (SCI) I2C bus interface (IIC) (supported as an option by H8S/2264 Group) A/D converter D/A converter (supported only by the H8S/2268 Group) LCD controller/driver DTMF generation circuit (supported only by the H8S/2268 Group) * On-chip memory H8S/2268 Group:
ROM Flash memory version Model HD64F2268 HD64F2266 HD64F2265 ROM 256 kbytes 128 kbytes 128 kbytes RAM 16 kbytes 8 kbytes 4 kbytes Remarks
H8S/2264 Group:
ROM Masked ROM version Model HD6432264 HD6432264W HD6432262 HD6432262W ROM 128 kbytes 128 kbytes 64 kbytes 64 kbytes RAM 4 kbytes 4 kbytes 2 kbytes 2 kbytes Remarks
Rev. 4.00 Mar 21, 2006 page 1 of 654 REJ09B0071-0400
Section 1 Overview
* General I/O ports I/O pins: 67 (supported only by the H8S/2268 Group) 51 (supported only by the H8S/2264 Group) Input-only pins: 11 * Supports various power-down states * Compact package
Package TQFP-100 TQFP-100 QFP-100 *1 Code*
2
Body Size 14.0 x 14.0 mm 14.0 x 14.0 mm 12.0 x 12.0 mm
Pin Pitch 0.5 mm 0.4 mm 0.5 mm
TFP-100B, TFP-100BV TFP-100G, TFP-100GV FP-100B, FP-100BV
Notes: 1. Supported only by the H8S/2268 Group. 2. Package codes ending in the letter V designate Pb-free product.
Rev. 4.00 Mar 21, 2006 page 2 of 654 REJ09B0071-0400
Section 1 Overview
1.2
Internal Block Diagram
Figure 1.1 shows the internal block diagram of the H8S/2268 Group and figure 1.2 shows that of the H8S/2264 Group.
PN7 / SEG40 PN6 / SEG39 PN5 / SEG38 PN4 / SEG37 PN3 / SEG36 PN2 / SEG35 PN1 / SEG34 PN0 / SEG33
CVcc Vcc Vss Vss
V1 V2 V3 C1 C2
Port N
Port M
Bus controller
Peripheral data bus
H8S/2000 CPU
Sub Clock pulse generator
Peripheral address bus
MD2 MD1 EXTAL XTAL OSC1 OSC2 STBY RES NMI FWE
System clock pulse generator
Internal address bus
PM7/SEG32 PM6/SEG31 PM5/SEG30 PM4/SEG29 PM3/SEG28 PM2/SEG27 PM1/SEG26 PM0/SEG25 PL7/SEG24 PL6/SEG23 PL5/SEG22 PL4/SEG21 PL3/SEG20 PL2/SEG19 PL1/SEG18 PL0/SEG17 PK7/SEG16 PK6/SEG15 PK5/SEG14 PK4/SEG13 PK3/SEG12 PK2/SEG11 PK1/SEG10 PK0/SEG9 PJ7/WKP7/SEG8 PJ6/WKP6/SEG7 PJ5/WKP5/SEG6 PJ4/WKP4/SEG5 PJ3/WKP3/SEG4 PJ2/WKP2/SEG3 PJ1/WKP1/SEG2 PJ0/WKP0/SEG1 PH7/TONED/TMCI4 PH3/COM4 PH2/COM3 PH1/COM2 PH0/COM1
Internal data bus
Interrupt controller
DTC
P70/TMRI01/TMCI01 P71/TMRI23/TMCI23 P72/TMO0 P73/TMO1 P74/TMO2 P75/TMO3/SCK2 P76/RxD2 P77/TxD2 P35/SCK1/SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SCL1 P32/SCK0/SDA1/IRQ4 P31/RxD0 P30/TxD0
PC break controller (2 channels)
SCI (3 channels)
Port K
Port 7
ROM
IIC (2 channels)
RAM
LCD (40SEG/4COM)
TPU (3 channels)
DTMF
Port J
Port 3
8 bit timer (4 channels+4 channels)
WDT1 (sub clock)
A/D converter(10 channels)
WDT0
D/A converter(2 channels)
Port H
Port F
PF3/ADTRG/IRQ3
Port 1
Port 4
Port 9
P10 / TIOCA0 P11 / TIOCB0 P12 / TIOCC0 / TCLKA P13 / TIOCD0 / TCLKB P14 / TIOCA1/IRQ0 P15 / TIOCB1 / TCLKC P16 / TIOCA2/IRQ1 P17 / TIOCB2/ TCLKD
Figure 1.1 Internal Block Diagram of H8S/2268 Group
Rev. 4.00 Mar 21, 2006 page 3 of 654 REJ09B0071-0400
Vref AVcc AVss
P96/AN8/DA0 P97/AN9/DA1
P47 / AN7 P46 / AN6 P45 / AN5 P44 / AN4 P43 / AN3 P42 / AN2 P41 / AN1 P40 / AN0
Port L
Section 1 Overview
CVcc Vcc Vss Vss
V1 V2 V3
SEG40 SEG39 SEG38 SEG37 SEG36 SEG35 SEG34 SEG33
Bus controller
Peripheral data bus
H8S/2000 CPU
Sub Clock pulse generator
Peripheral address bus
MD2 MD1 EXTAL XTAL OSC1 OSC2 STBY RES NMI FWE
System clock pulse generator
Internal address bus
SEG32 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 PL7 /SEG24 PL6 /SEG23 PL5 /SEG22 PL4 /SEG21 PL3 /SEG20 PL2 /SEG19 PL1 /SEG18 PL0 /SEG17 PK7 /SEG16 PK6 /SEG15 PK5 /SEG14 PK4/SEG13 PK3 /SEG12 PK2 /SEG11 PK1 /SEG10 PK0 /SEG9 PJ7 /WKP7/SEG8 PJ6 /WKP6/SEG7 PJ5 /WKP5/SEG6 PJ4 /WKP4/SEG5 PJ3 /WKP3/SEG4 PJ2 /WKP2/SEG3 PJ1 /WKP1/SEG2 PJ0 /WKP0/SEG1
Internal data bus
Interrupt controller
SCI (3 channels)
P7 0 / T M R I 0 1 / T M C I 0 1 P7 1 P72/ T M O 0 P73/ T M O 1 P74 P75/ S C K 2 P76/RxD2 P77/TxD2 P35/SCK1/SCL0 P34/RxD1/SDA0 P33/TxD1 P32/SCK0/IRQ4 P31/RxD0 P30/TxD0
Port K Port J
Port 7
ROM
IIC (1 channel) (option)
RAM
LCD (40SEG/4COM)
TPU (2 channels)
Port 3
8 bit timer (2 channels)
WDT1 (sub clock)
A/D converter (10 channels)
WDT0
Port L
Port F
Port 1
Port 4
Port 9
P10 P11 P12 / TCLKA P13 / TCLKB P14 / TIOCA1/IRQ0 P15 / TIOCB1 / TCLKC P16 / TIOCA2/IRQ1 P17 / TIOCB2
P47 / AN7 P46 / AN6 P45 / AN5 P44 / AN4 P43 / AN3 P42 / AN2 P41 / AN1 P40 / AN0
Figure 1.2 Internal Block Diagram of H8S/2264 Group
Rev. 4.00 Mar 21, 2006 page 4 of 654 REJ09B0071-0400
Vref AVcc AVss
P96/AN8 P97/AN9
Port H
PF3/ADTRG/IRQ3
PH7 PH3/COM4 PH2/COM3 PH1/COM2 PH0/COM1
Section 1 Overview
1.3
Pin Arrangement
Figure 1.3 shows the pin arrangement of the H8S/2268 Group and figure 1.4 shows that of the H8S/2264 Group.
P70/TMRI01/TMCI01 P71/TMRI23/TMCI23 P72/TMO0 P73/TMO1 P74/TMO2 P75/TMO3/SCK2 P76/RxD2 P77/TxD2 MD2 FWE EXTAL Vss XTAL Vcc STBY NMI RES OSC1 OSC2 MD1 PH7/TONED/TMCI4 AVcc Vref P40/AN0 P41/AN1
P30/TxD0 P31/RxD0 P32/SCK0/SDA1/IRQ4 P33/TxD1/SCL1 P34/RxD1/SDA0 P35/SCK1/SCL0/IRQ5 PF3/ADTRG/IRQ3 C2 C1 V3 V2 V1 PH3/COM4 PH2/COM3 PH1/COM2 PH0/COM1 PN7/SEG40 PN6/SEG39 PN5/SEG38 PN4/SEG37 PN3/SEG36 PN2/SEG35 PN1/SEG34 PN0/SEG33 PM7/SEG32 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26
FP-100B FP-100BV TFP-100B TFP-100BV TFP-100G TFP-100GV (TOP VIEW)
Figure 1.3 Pin Arrangement of H8S/2268 Group
PM6/SEG31 PM5/SEG30 PM4/SEG29 PM3/SEG28 PM2/SEG27 PM1/SEG26 PM0/SEG25 PL7/SEG24 PL6/SEG23 PL5/SEG22 PL4/SEG21 CVcc PL3/SEG20 Vss PL2/SEG19 PL1/SEG18 PL0/SEG17 PK7/SEG16 PK6/SEG15 PK5/SEG14 PK4/SEG13 PK3/SEG12 PK2/SEG11 PK1/SEG10 PK0/SEG9
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
P42/AN2 P43/AN3 P44/AN4 P45/AN5 P46/AN6 P47/AN7 P96/AN8/DA0 P97/AN9/DA1 AVss P17/TIOCB2/TCLKD P16/TIOCA2/IRQ1 P15/TIOCB1/TCLKC P14/TIOCA1/IRQ0 P13/TIOCD0/TCLKB P12/TIOCC0/TCLKA P11/TIOCB0 P10/TIOCA0 PJ0/WKP0/SEG1 PJ1/WKP1/SEG2 PJ2/WKP2/SEG3 PJ3/WKP3/SEG4 PJ4/WKP4/SEG5 PJ5/WKP5/SEG6 PJ6/WKP6/SEG7 PJ7/WKP7/SEG8
Rev. 4.00 Mar 21, 2006 page 5 of 654 REJ09B0071-0400
Section 1 Overview
Note: * The NC pin should be open.
Rev. 4.00 Mar 21, 2006 page 6 of 654 REJ09B0071-0400
SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 PL7/SEG24 PL6/SEG23 PL5/SEG22 PL4/SEG21 CVcc PL3/SEG20 Vss PL2/SEG19 PL1/SEG18 PL0/SEG17 PK7/SEG16 PK6/SEG15 PK5/SEG14 PK4/SEG13 PK3/SEG12 PK2/SEG11 PK1/SEG10 PK0/SEG9
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
P30/TxD0 P31/RxD0 P32/SCK0/IRQ4 P33/TxD1 P34/RxD1/SDA0 P35/SCK1/SCL0 PF3/ADTRG/IRQ3 NC* NC* V3 V2 V1 PH3/COM4 PH2/COM3 PH1/COM2 PH0/COM1 SEG40 SEG39 SEG38 SEG37 SEG36 SEG35 SEG34 SEG33 SEG32
76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26
P70/TMRI01/TMCI01 P71 P72/TMO0 P73/TMO1 P74 P75/SCK2 P76/RxD2 P77/TxD2 MD2 FWE EXTAL Vss XTAL Vcc STBY NMI RES OSC1 OSC2 MD1 PH7 AVcc Vref P40/AN0 P41/AN1
FP-100B FP-100BV TFP-100G TFP-100GV (TOP VIEW)
P42/AN2 P43/AN3 P44/AN4 P45/AN5 P46/AN6 P47/AN7 P96/AN8 P97/AN9 AVss P17/TIOCB2 P16/TIOCA2/IRQ1 P15/TIOCB1/TCLKC P14/TIOCA1/IRQ0 P13/TCLKB P12/TCLKA P11 P10 PJ0/WKP0/SEG1 PJ1/WKP1/SEG2 PJ2/WKP2/SEG3 PJ3/WKP3/SEG4 PJ4/WKP4/SEG5 PJ5/WKP5/SEG6 PJ6/WKP6/SEG7 PJ7/WKP7/SEG8
Figure 1.4 Pin Arrangement of H8S/2264 Group
Section 1 Overview
1.4
Pin Functions
Table 1.1 lists the pins functions. Table 1.1
Type Power supply
Pin Functions
Symbol Vcc CVcc Pin NO. 62 12 I/O Input Input Function Power supply pin. Connect this pin to the system power supply. Connect this pin to Vss via a capacitor (H8S/2268 Group: 0.1 F/0.2 F and H8S/2264 Group: 0.2 F) for voltage stabilization. Note that applying a voltage exceeding 4.3 V, the absolute maximum rating, to the CVcc pin may cause fatal damages on this LSI. Do not connect the power supply to the CVcc pin. See section 23, Power Supply Circuit, for connecting examples. Power supply pins for the LCD controller/driver. With an internal power supply division resistor, these pins are normally left open. Power supply should be within the range of Vcc V1 V2 V3 1 Vss. When the triple step-up voltage circuit* is used, the V3 pin is used for the LCD input reference power supply. Ground pins. Connect this pin to the system power supply (0 V). For connection to a crystal resonator. This pin can be also used for external clock input. For examples of crystal resonator connection and external clock input, see section 21, Clock Pulse Generator. Connects to a 32.768 kHz crystal resonator. See section 21, Clock Pulse Generator, for typical connection diagrams for a crystal resonator. Sets the operating mode. Inputs at these pins should not be changed during operation. Be sure to fix the levels of the mode pins (MD2, MD1) by pull-down or pull-up, except for mode changing.
V3 V2 V1
85 86 87
Input
Vss Clock XTAL EXTAL
14 64 63 65
Input Input Input
OSC1 OSC2
58 57
Input Input Input
Operating MD2, MD1 67 mode control 56
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Section 1 Overview Type System control Symbol
2 RES*
Pin NO. 59
I/O Input Input Input Input Input
Function Reset input pin. When this pin is low, the chip enters in the power-on reset state. When this pin is low, a transition is made to hardware standby mode. Enables/disables programming the flash memory. Nonmaskable interrupt pin. If this pin is not used, it should be fixed-high. These pins request a maskable interrupt.
STBY* FWE Interrupts NMI*
2
2
61 66 60
IRQ5* IRQ4 IRQ3 IRQ1 IRQ0
1
81 78 82 40 38 26 to 33 41 39 37 36 34 35 36 37 38 39 40 41 70 71 72 73 74 75 55 74 75
WKP7 to WKP0 1 16-bit timer- TCLKD* TCLKC pulse unit TCLKB (TPU) TCLKA 1 TIOCA0* 1 TIOCB0* 1 TIOCC0* *1 TIOCD0 TIOCA1 TIOCB1 TIOCA2 TIOCB2 1 TMO3* *1 TMO2 TMO1 TMO0 1 TMCI23* TMCI01 1 TMCI4* TMRI23* TMRI01
1
Input Input
These pins request a wakeup interrupt. This interrupt is maskable. These pins input an external clock.
Input/ Output
Pins for the TGRA_0 to TGRD_0 input capture input or output compare output, or PWM output.
Input/ Output Input/ Output Output
Pins for the TGRA_1 and TGRB_1 input capture input or output compare output, or PWM output. Pins for the TGRA_2 and TGRB_2 input capture input or output compare output, or PWM output. Compare-match output pins
8-bit timer
Input
Pins for external clock input to the counter
Input
Counter reset input pins.
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Section 1 Overview Type Serial communication Interface (SCI)/smart card interface Symbol TxD2 TxD1 TxD0 RxD2 RxD1 RxD0 SCK2 SCK1 SCK0 1 SCL1* SCL0 SDA1* SDA0 A/D converter AN9 to AN0 ADTRG D/A 1 converter* A/D converter, D/A 1 converter* DA1 DA0 AVcc
1
Pin NO. 68 79 76 69 80 77 70 81 78 79 81 78 80 43 to 52 82 43 44 54
I/O Output
Function Data output pins
Input
Data input pins
Input/ Output Input/ Output Input/ Output Input Input Output Input
Clock input/output pins. SCK1 outputs NMOS push-pull. I C clock input/output pins. These pins drive bus. The output of SCL0 is NMOS open drain. I C data input/output pins. These pins drive bus. The output of SDA0 is NMOS open drain. Analog input pins Pin for input of an external trigger to start A/D conversion 1 Analog output pins for the D/A converter* . Power supply pin for the A/D converter, D/A 1 1 converter* and DTMF generation circuit* . If *1 and none of the A/D converter, D/A converter 1 DTMF generation circuit* is used, connect this pin to the system power supply (+5 V). Ground pin for the A/D converter, D/A 1 1 converter* , and DTMF generator* . Connect this pin to the system power supply (0 V). Reference voltage input pin for the A/D converter 1 and D/A converter* . If neither the A/D converter 1 nor D/A converter* is used, connect this pin to the system power supply (+5 V).
2 2
I C bus 3 interface*
2
AVss
42
Input
Vref
53
Input
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Section 1 Overview Type LCD controller/ driver Symbol Pin NO. I/O Function LCD segment output pins
SEG40 to 92 to 100, Output SEG 1 1 to 11, 13, 15 to 33 COM4 to COM1 1 C2* 1 C1* 88 to 91 83 84 55 Output -- Output
LCD common output pins Pins for the step-up voltage capacitor of the LCD drive power supply. DTMF signal output pin.
DTMF generation 1 circuit* I/O ports
TONED
P17 to P10 P35 to P30 P47 to P40 P77 to P70 P97 P96 PF3 PH7 PH3 to PH0
41 to 34 81 to 76 45 to 52 68 to 75 43 44 82 55 88 to 91
Input/ Output Input/ Output Input Input/ Output Input Input/ Output Input Input/ Output Input/ Output Input/ Output Input/ Output
8-bit I/O pins 6-bit I/O pins P34 and P35 output NMOS push-pull. 8-bit input pins 8-bit I/O pins 2-bit input pins 1-bit I/O pin 1-bit input pin 4-bit I/O pins 8-bit I/O pins 8-bit I/O pins 8-bit I/O pins
PJ7 to PJ0 26 to 33 PK7 to PK0 PL7 PL6 PL5 PL4 PL3 PL2 PL1 PL0 18 to 25 8 9 10 11 13 15 16 17
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Section 1 Overview Type I/O ports Symbol
1 PM7* 1 PM6* 1 PM5* *1 PM4 1 PM3* 1 PM2* 1 PM1* *1 PM0
Pin NO. 100 1 2 3 4 5 6 7 92 to 99
I/O Input/ Output
Function 8-bit I/O pins
PN7 to 1 PN0*
Input/ Output
8-bit I/O pins
Notes: 1. Supported only by the H8S/2268 Group. 2. Countermeasure against noise should be executed or may result in malfunction. 3. Supported as an option by H8S/2264 Group.
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Section 1 Overview
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Section 2 CPU
Section 2 CPU
The H8S/2000 CPU is a high-speed central processing unit with an internal 32-bit architecture that is upward-compatible with the H8/300 and H8/300H CPUs. The H8S/2000 CPU has sixteen 16-bit general registers, can address a 16-Mbyte linear address space, and is ideal for realtime control. This section describes the H8S/2000 CPU. The usable modes and address spaces differ depending on the product. For details on each product, refer to section 3, MCU Operating Modes.
2.1
Features
* Upward-compatible with H8/300 and H8/300H CPU Can execute H8/300 and H8/300H CPU object programs * General-register architecture Sixteen 16-bit general registers also usable as sixteen 8-bit registers or eight 32-bit registers * Sixty-five basic instructions 8/16/32-bit arithmetic and logic instructions Multiply and divide instructions Powerful bit-manipulation instructions * Eight addressing modes Register direct [Rn] Register indirect [@ERn] Register indirect with displacement [@(d:16,ERn) or @(d:32,ERn)] Register indirect with post-increment or pre-decrement [@ERn+ or @-ERn] Absolute address [@aa:8, @aa:16, @aa:24, or @aa:32] Immediate [#xx:8, #xx:16, or #xx:32] Program-counter relative [@(d:8,PC) or @(d:16,PC)] Memory indirect [@@aa:8] * 16-Mbyte address space Program: 16 Mbytes Data: 16 Mbytes * High-speed operation All frequently-used instructions execute in one or two states 8/16/32-bit register-register add/subtract: 1 state 8 x 8-bit register-register multiply: 16 / 8-bit register-register divide: 12 states 12 states
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CPUS213A_000020020700
Section 2 CPU
16 x 16-bit register-register multiply: 32 / 16-bit register-register divide: * Two CPU operating modes Normal mode* Advanced mode * Power-down state
20 states 20 states
Transition to power-down state by a SLEEP instruction CPU clock speed selection Note: * Normal mode is not available in this LSI. 2.1.1 Differences between H8S/2600 CPU and H8S/2000 CPU
The differences between the H8S/2600 CPU and the H8S/2000 CPU are shown below. * Register configuration The MAC register is supported by the H8S/2600 CPU only. * Basic instructions The four instructions MAC, CLRMAC, LDMAC, and STMAC are supported by the H8S/2600 CPU only. * The number of execution states of the MULXU and MULXS instructions;
Execution States Instruction MULXU MULXS Mnemonic MULXU.B Rs, Rd MULXU.W Rs, ERd MULXS.B Rs, Rd MULXS.W Rs, ERd H8S/2600 3 4 4 5 H8S/2000 12 20 13 21
In addition, there are differences in address space, CCR and EXR* register functions, and powerdown modes, etc., depending on the model. Note: * Supported only by the H8S/2268 Group.
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Section 2 CPU
2.1.2
Differences from H8/300 CPU
In comparison to the H8/300 CPU, the H8S/2000 CPU has the following enhancements: * More general registers and control registers Eight 16-bit expanded registers, and one 8-bit and two 32-bit control registers, have been added. * Expanded address space Normal mode supports the same 64-kbyte address space as the H8/300 CPU. Advanced mode supports a maximum 16-Mbyte address space. * Enhanced addressing The addressing modes have been enhanced to make effective use of the 16-Mbyte address space. * Enhanced instructions Addressing modes of bit-manipulation instructions have been enhanced. Signed multiply and divide instructions have been added. Two-bit shift instructions have been added. Instructions for saving and restoring multiple registers have been added. A test and set instruction has been added. * Higher speed Basic instructions execute twice as fast. 2.1.3 Differences from H8/300H CPU
In comparison to the H8/300H CPU, the H8S/2000 CPU has the following enhancements: * Additional control register One 8-bit control registers have been added. * Enhanced instructions Addressing modes of bit-manipulation instructions have been enhanced. Two-bit shift instructions have been added. Instructions for saving and restoring multiple registers have been added. A test and set instruction has been added. * Higher speed Basic instructions execute twice as fast.
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Section 2 CPU
2.2
CPU Operating Modes
The H8S/2000 CPU has two operating modes: normal and advanced. Normal mode supports a maximum 64-kbyte address space. Advanced mode supports a maximum 16-Mbyte total address space. The mode is selected by the mode pins. 2.2.1 Normal Mode
The exception vector table and stack have the same structure as in the H8/300 CPU. * Address Space Linear access is provided to a maximum address space of 64 kbytes. * Extended Registers (En) The extended registers (E0 to E7) can be used as 16-bit registers, or as the upper 16-bit segments of 32-bit registers. When En is used as a 16-bit register it can contain any value, even when the corresponding general register (Rn) is used as an address register. If the general register is referenced in the register indirect addressing mode with pre-decrement (@-Rn) or post-increment (@Rn+) and a carry or borrow occurs, however, the value in the corresponding extended register (En) will be affected. * Instruction Set All instructions and addressing modes can be used. Only the lower 16 bits of effective addresses (EA) are valid. * Exception Vector Table and Memory Indirect Branch Addresses In normal mode the top area starting at H'0000 is allocated to the exception vector table. One branch address is stored per 16 bits. Figure 2.1 shows the structure of the exception vector table in normal mode. For details of the exception vector table, see section 4, Exception Handling. The memory indirect addressing mode (@@aa:8) employed in the JMP and JSR instructions uses an 8-bit absolute address included in the instruction code to specify a memory operand that contains a branch address. In normal mode the operand is a 16-bit word operand, providing a 16-bit branch address. Branch addresses can be stored in the top area from H'0000 to H'00FF. Note that this area is also used for the exception vector table. * Stack Structure When the program counter (PC) is pushed onto the stack in a subroutine call, and the PC, condition-code register (CCR) and extended control register (EXR) are pushed onto the stack in exception handling, they are stored as shown in figure 2.2. EXR is not pushed onto the stack in interrupt control mode 0. For details, see section 4, Exception Handling. Note: * Normal mode is not available in this LSI.
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Section 2 CPU
H'0000 H'0001 H'0002 H'0003 H'0004 H'0005 H'0006 H'0007 H'0008 H'0009 H'000A H'000B
Reset exception vector
(Reserved for system use) Exception vector table Exception vector 1 Exception vector 2
Figure 2.1 Exception Vector Table (Normal Mode)
SP
PC (16 bits)
SP (SP *2 )
EXR*1 Reserved*1 *3 CCR CCR*3 PC (16 bits)
(a) Subroutine Branch Notes: 1. When EXR is not used it is not stored on the stack. 2. SP when EXR is not used. 3. lgnored when returning.
(b) Exception Handling
Figure 2.2 Stack Structure in Normal Mode
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Section 2 CPU
2.2.2
Advanced Mode
* Address Space Linear access is provided to a maximum 16-Mbyte address space. * Extended Registers (En) The extended registers (E0 to E7) can be used as 16-bit registers, or as the upper 16-bit segments of 32-bit registers or address registers. * Instruction Set All instructions and addressing modes can be used. * Exception Vector Table and Memory Indirect Branch Addresses In advanced mode, the top area starting at H'00000000 is allocated to the exception vector table in units of 32 bits. In each 32 bits, the upper 8 bits are ignored and a branch address is stored in the lower 24 bits (figure 2.3). For details of the exception vector table, see section 4, Exception Handling.
H'00000000 Reserved Reset exception vector H'00000003 H'00000004
H'00000007 H'00000008 Exception vector table Exception vector 3 H'0000000B H'0000000C
H'00000010
Reserved Exception vector 1
Figure 2.3 Exception Vector Table (Advanced Mode)
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Section 2 CPU
The memory indirect addressing mode (@@aa:8) employed in the JMP and JSR instructions uses an 8-bit absolute address included in the instruction code to specify a memory operand that contains a branch address. In advanced mode, the operand is a 32-bit longword operand, providing a 32-bit branch address. The upper 8 bits of these 32 bits is a reserved area that is regarded as H'00. Branch addresses can be stored in the area from H'00000000 to H'000000FF. Note that the first part of this range is also the exception vector table. * Stack Structure In advanced mode, when the program counter (PC) is pushed onto the stack in a subroutine call, and the PC, condition-code register (CCR), and extended control register (EXR*) are pushed onto the stack in exception handling, they are stored as shown in figure 2.4. When EXR* is invalid, it is not pushed onto the stack. For details, see section 4, Exception Handling. Note: * Supported only by the H8S/2268 Group.
SP SP Reserved PC (24 bits) (SP *2 )
EXR*1 *4 Reserved*1 *3 *4 CCR PC (24 bits)
(a) Subroutine Branch
(b) Exception Handling
Notes: 1. When EXR is not used it is not stored on the stack. 2. SP when EXR is not used (The H8S/2264 Group SP always points here). 3. Ignored when returning. 4. Supported only by the H8S/2268 Group.
Figure 2.4 Stack Structure in Advanced Mode
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Section 2 CPU
2.3
Address Space
Figure 2.5 shows a memory map of the H8S/2000 CPU. The H8S/2000 CPU provides linear access to a maximum 64-kbyte address space in normal mode, and a maximum 16-Mbyte (architecturally 4-Gbyte) address space in advanced mode. The usable modes and address spaces differ depending on the product. For details on each product, refer to section 3, MCU Operating Modes.
H'0000 64 kbytes H'FFFF 16 Mbytes Program area H'00000000
H'00FFFFFF
Data area
H'FFFFFFFF (a) Normal Mode Note: Normal mode is not available in this LSI (b) Advanced Mode
Figure 2.5 Memory Map
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Section 2 CPU
2.4
Register Configuration
The H8S/2000 CPU has the internal registers shown in figure 2.6. There are two types of registers: general registers and control registers. Control registers are a 24-bit program counter (PC), an 8-bit extended control register (EXR*), and an 8-bit condition code register (CCR). Note: * Supported only by the H8S/2268 Group.
General Registers (Rn) and Extended Registers (En)
15 ER0 ER1 ER2 ER3 ER4 ER5 ER6 ER7 (SP) E0 E1 E2 E3 E4 E5 E6 E7 07 R0H R1H R2H R3H R4H R5H R6H R7H 07 R0L R1L R2L R3L R4L R5L R6L R7L 0
Control Registers (CR)
23 PC 0
EXR*1 T
76543210 - - - - I2 I1 I0
76543210
CCR I UI H U N Z V C
Legend:
SP PC EXR T I2 to I0 CCR I UI : Stack pointer : Program counter : Extended control register*1 : Trace bit*1 : Interrupt mask bits*1 : Condition-code register*1 : Interrupt mask bit : User bit or interrupt mask bit*2 H U N Z V C : Half-carry flag : User bit : Negative flag : Zero flag : Overflow flag : Carry flag
Notes: 1. Supported only by the H8S/2268 Group. 2. The interrupt mask bit is not available in this LSI.
Figure 2.6 CPU Registers
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Section 2 CPU
2.4.1
General Registers
The H8S/2000 CPU has eight 32-bit general registers. These general registers are all functionally alike and can be used as both address registers and data registers. When a general register is used as a data register, it can be accessed as a 32-bit, 16-bit, or 8-bit register. Figure 2.7 illustrates the usage of the general registers. When the general registers are used as 32-bit registers or address registers, they are designated by the letters ER (ER0 to ER7). The ER registers divide into 16-bit general registers designated by the letters E (E0 to E7) and R (R0 to R7). These registers are functionally equivalent, providing a maximum sixteen 16-bit registers. The E registers (E0 to E7) are also referred to as extended registers. The R registers divide into 8-bit general registers designated by the letters RH (R0H to R7H) and RL (R0L to R7L). These registers are functionally equivalent, providing a maximum sixteen 8-bit 2egisters. The usage of each register can be selected independently. General register ER7 has the function of stack pointer (SP) in addition to its general-register function, and is used implicitly in exception handling and subroutine calls. Figure 2.8 shows the stack.
* Address registers * 32-bit registers * 16-bit registers * 8-bit registers
E registers (extended registers) (E0 to E7) ER registers (ER0 to ER7) R registers (R0 to R7) RL registers (R0L to R7L) RH registers (R0H to R7H)
Figure 2.7 Usage of General Registers
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Section 2 CPU
Free area SP (ER7)
Stack area
Figure 2.8 Stack Status 2.4.2 Program Counter (PC)
This 24-bit counter indicates the address of the next instruction the CPU will execute. The length of all CPU instructions is 2 bytes (one word), so the least significant PC bit is ignored. (When an instruction is fetched, the least significant PC bit is regarded as 0.) 2.4.3 Extended Control Register (EXR) (H8S/2268 Group Only)
EXR is an 8-bit register that manipulates the LDC, STC, ANDC, ORC, and XORC instructions. When these instructions except for the STC instruction is executed, all interrupts including NMI will be masked for three states after execution is completed.
Bit 7 Bit Name T Initial Value 0 R/W R/W Description Trace Bit When this bit is set to 1, a trace exception is generated each time an instruction is executed. When this bit is cleared to 0, instructions are executed in sequence. 6 to 3 2 1 0 I2 I1 I0 1 1 1 1 R/W R/W R/W Reserved These bits are always read as 1. These bits designate the interrupt mask level (0 to 7). For details, refer to section 5, Interrupt Controller.
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Section 2 CPU
2.4.4
Condition-Code Register (CCR)
This 8-bit register contains internal CPU status information, including an interrupt mask bit (I) and half-carry (H), negative (N), zero (Z), overflow (V), and carry (C) flags. Operations can be performed on the CCR bits by the LDC, STC, ANDC, ORC, and XORC instructions. The N, Z, V, and C flags are used as branching conditions for conditional branch (Bcc) instructions.
Bit 7 Bit Name I Initial Value 1 R/W R/W Description Interrupt Mask Bit Masks interrupts other than NMI when set to 1. NMI is accepted regardless of the I bit setting. The I bit is set to 1 by hardware at the start of an exception-handling sequence. For details, refer to section 5, Interrupt Controller. 6 UI Undefined R/W User Bit or Interrupt Mask Bit Can be written and read by software using the LDC, STC, ANDC, ORC, and XORC instructions. This bit cannot be used as an interrupt mask bit in this LSI. 5 H Undefined R/W Half-Carry Flag When the ADD.B, ADDX.B, SUB.B, SUBX.B, CMP.B, or NEG.B instruction is executed, this flag is set to 1 if there is a carry or borrow at bit 3, and cleared to 0 otherwise. When the ADD.W, SUB.W, CMP.W, or NEG.W instruction is executed, the H flag is set to 1 if there is a carry or borrow at bit 11, and cleared to 0 otherwise. When the ADD.L, SUB.L, CMP.L, or NEG.L instruction is executed, the H flag is set to 1 if there is a carry or borrow at bit 27, and cleared to 0 otherwise. 4 U Undefined R/W User Bit Can be written and read by software using the LDC, STC, ANDC, ORC, and XORC instructions. 3 N Undefined R/W Negative Flag Stores the value of the most significant bit of data as a sign bit. 2 Z Undefined R/W Zero Flag Set to 1 to indicate zero data, and cleared to 0 to indicate non-zero data.
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Section 2 CPU Initial Value
Bit 1
Bit Name V
R/W
Description Overflow Flag Set to 1 when an arithmetic overflow occurs, and cleared to 0 at other times.
Undefined R/W
0
C
Undefined R/W
Carry Flag Set to 1 when a carry occurs, and cleared to 0 otherwise. Used by: * * * Add instructions, to indicate a carry Subtract instructions, to indicate a borrow Shift and rotate instructions, to indicate a carry
The carry flag is also used as a bit accumulator by bit manipulation instructions.
2.4.5
Initial Values of CPU Registers
Reset exception handling loads the CPU's program counter (PC) from the vector table, clears the trace bit in EXR* to 0, and sets the interrupt mask bits in CCR and EXR* to 1. The other CCR bits and the general registers are not initialized. In particular, the stack pointer (ER7) is not initialized. The stack pointer should therefore be initialized by an MOV.L instruction executed immediately after a reset. Note: * Supported only by the H8S/2268 Group.
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Section 2 CPU
2.5
Data Formats
The H8S/2000 CPU can process 1-bit, 4-bit (BCD), 8-bit (byte), 16-bit (word), and 32-bit (longword) data. Bit-manipulation instructions operate on 1-bit data by accessing bit n (n = 0, 1, 2, ..., 7) of byte operand data. The DAA and DAS decimal-adjust instructions treat byte data as two digits of 4-bit BCD data. 2.5.1 General Register Data Formats
Figure 2.9 shows the data formats in general registers.
Data Type
1-bit data
Register Number
RnH
Data Format
7 0 Don't care 76 54 32 10
7 1-bit data RnL Don't care
0
76 54 32 10
7 4-bit BCD data RnH Upper
43 Lower
0 Don't care
7 4-bit BCD data RnL Don't care Upper
43 Lower
0
7 Byte data RnH MSB
0 Don't care LSB 7 0 LSB
Byte data
RnL
Don't care MSB
Figure 2.9 General Register Data Formats (1)
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Section 2 CPU
Data Type Word data
Register Number Rn
Data Format
15
0
MSB
LSB
Word data
15
En
0
MSB
LSB
Longword data
31
ERn
16 15 0
MSB
En
Rn
LSB
Legend:
ERn: En: Rn: RnH: RnL: MSB: LSB: General register ER General register E General register R General register RH General register RL Most significant bit Least significant bit
Figure 2.9 General Register Data Formats (2)
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Section 2 CPU
2.5.2
Memory Data Formats
Figure 2.10 shows the data formats in memory. The H8S/2000 CPU can access word data and longword data in memory, but word or longword data must begin at an even address. If an attempt is made to access word or longword data at an odd address, no address error occurs but the least significant bit of the address is regarded as 0, so the access starts at the preceding address. This also applies to instruction fetches. When ER7 is used as an address register to access the stack, the operand size should be word or longword.
Data Type Address
7 1-bit data Address L 7 6 5 4 3 2 1
Data Format
0 0
Byte data
Address L
MSB
LSB
Word data
Address 2M Address 2M + 1
MSB LSB
Longword data
Address 2N Address 2N + 1 Address 2N + 2 Address 2N + 3
MSB
LSB
Figure 2.10 Memory Data Formats
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Section 2 CPU
2.6
Instruction Set
The H8S/2000 CPU has 65 types of instructions. The instructions are classified by function in table 2.1. Table 2.1
Function Data transfer
Instruction Classification
Instructions MOV 1 1 POP* , PUSH* LDM, STM 3 3 MOVFPE* , MOVTPE* Size B/W/L W/L L B B/W/L B B/W/L L B/W W/L B B/W/L B/W/L B 4 8 14 5 9 1 Total: 65 19 Types 5
Arithmetic operations
ADD, SUB, CMP, NEG ADDX, SUBX, DAA, DAS INC, DEC ADDS, SUBS MULXU, DIVXU, MULXS, DIVXS EXTU, EXTS 4 TAS*
Logic operations Shift Bit manipulation Branch System control
AND, OR, XOR, NOT SHAL, SHAR, SHLL, SHLR, ROTL, ROTR, ROTXL, ROTXR BSET, BCLR, BNOT, BTST, BLD, BILD, BST, BIST, BAND, BIAND, BOR, BIOR, BXOR, BIXOR 2 Bcc* , JMP, BSR, JSR, RTS TRAPA, RTE, SLEEP, LDC, STC, ANDC, ORC, XORC, NOP
Block data transfer EEPMOV
Legend: B: Byte W: Word L: Longword Notes: 1. POP.W Rn and PUSH.W Rn are identical to MOV.W @SP+, Rn and MOV.W Rn, @-SP. POP.L ERn and PUSH.L ERn are identical to MOV.L @SP+, ERn and MOV.L ERn, @-SP. 2. Bcc is the general name for conditional branch instructions. 3. Cannot be used in this LSI. 4. Only register ER0, ER1, ER4, or ER5 should be used when using the TAS instruction. Rev. 4.00 Mar 21, 2006 page 29 of 654 REJ09B0071-0400
Section 2 CPU
2.6.1
Table of Instructions Classified by Function
Tables 2.3 to 2.10 summarize the instructions in each functional category. The notation used in tables 2.3 to 2.10 is defined below. Table 2.2
Symbol Rd Rs Rn ERn (EAd) (EAs) EXR CCR N Z V C PC SP #IMM disp + - x / :8/:16/:24/:32
Operation Notation
Description General register (destination) * 1 General register (source) * General register*
1 1
General register (32-bit register) Destination operand Source operand Extended control register* Condition-code register N (negative) flag in CCR Z (zero) flag in CCR V (overflow) flag in CCR C (carry) flag in CCR Program counter Stack pointer Immediate data Displacement Addition Subtraction Multiplication Division Logical AND Logical OR Logical XOR Move NOT (logical complement) 8-, 16-, 24-, or 32-bit length
2
Notes: 1. General registers include 8-bit registers (R0H to R7H, R0L to R7L), 16-bit registers (R0 to R7, E0 to E7), and 32-bit registers (ER0 to ER7). 2. Supported only by the H8S/2268 Group.
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Section 2 CPU
Table 2.3
Instruction MOV
Data Transfer Instructions
Size* B/W/L Function (EAs) Rd, Rs (EAd) Moves data between two general registers or between a general register and memory, or moves immediate data to a general register. Cannot be used in this LSI. Cannot be used in this LSI. @SP+ Rn Pops a general register from the stack. POP.W Rn is identical to MOV.W @SP+, Rn. POP.L ERn is identical to MOV.L @SP+, ERn. Rn @-SP Pushes a general register onto the stack. PUSH.W Rn is identical to MOV.W Rn, @-SP. PUSH.L ERn is identical to MOV.L ERn, @-SP. @SP+ Rn (register list) Pops two or more general registers from the stack. Rn (register list) @-SP Pushes two or more general registers onto the stack.
MOVFPE MOVTPE POP
B B W/L
PUSH
W/L
LDM STM
L L
Note: * Refers to the operand size. B: Byte W: Word L: Longword
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Section 2 CPU
Table 2.4
Instruction ADD SUB
Arithmetic Operations Instructions (1)
Size* B/W/L Function Rd Rs Rd, Rd #IMM Rd Performs addition or subtraction on data in two general registers, or on immediate data and data in a general register (immediate byte data cannot be subtracted from byte data in a general register. Use the SUBX or ADD instruction.) Rd Rs C Rd, Rd #IMM C Rd Performs addition or subtraction with carry on byte data in two general registers, or on immediate data and data in a general register. Rd 1 Rd, Rd 2 Rd Increments or decrements a general register by 1 or 2. (Byte operands can be incremented or decremented by 1 only.) Rd 1 Rd, Rd 2 Rd, Rd 4 Rd Adds or subtracts the value 1, 2, or 4 to or from data in a 32-bit register. Rd decimal adjust Rd Decimal-adjusts an addition or subtraction result in a general register by referring to the CCR to produce 4-bit BCD data. Rd x Rs Rd Performs unsigned multiplication on data in two general registers: either 8 bits x 8 bits 16 bits or 16 bits x 16 bits 32 bits. Rd x Rs Rd Performs signed multiplication on data in two general registers: either 8 bits x 8 bits 16 bits or 16 bits x 16 bits 32 bits. Rd / Rs Rd Performs unsigned division on data in two general registers: either 16 bits / 8 bits 8-bit quotient and 8-bit remainder or 32 bits / 16 bits 16-bit quotient and 16-bit remainder.
ADDX SUBX INC DEC ADDS SUBS DAA DAS MULXU
B
B/W/L
L B
B/W
MULXS
B/W
DIVXU
B/W
Note: * Refers to the operand size. B: Byte W: Word L: Longword
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Section 2 CPU
Table 2.4
Instruction DIVXS
Arithmetic Operations Instructions (2)
Size* B/W
1
Function Rd / Rs Rd Performs signed division on data in two general registers: either 16 bits / 8 bits 8-bit quotient and 8-bit remainder or 32 bits / 16 bits 16-bit quotient and 16-bit remainder. Rd - Rs, Rd - #IMM Compares data in a general register with data in another general register or with immediate data, and sets CCR bits according to the result. 0 - Rd Rd Takes the two's complement (arithmetic complement) of data in a general register. Rd (zero extension) Rd Extends the lower 8 bits of a 16-bit register to word size, or the lower 16 bits of a 32-bit register to longword size, by padding with zeros on the left. Rd (sign extension) Rd Extends the lower 8 bits of a 16-bit register to word size, or the lower 16 bits of a 32-bit register to longword size, by extending the sign bit. @ERd - 0, 1 ( of @ERd) Tests memory contents, and sets the most significant bit (bit 7) to 1.
CMP
B/W/L
NEG
B/W/L
EXTU
W/L
EXTS
W/L
TAS*
2
B
Notes: 1. Refers to the operand size. B: Byte W: Word L: Longword 2. Only register ER0, ER1, ER4, or ER5 should be used when using the TAS instruction.
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Section 2 CPU
Table 2.5
Instruction AND
Logic Operations Instructions
Size* B/W/L Function Rd Rs Rd, Rd #IMM Rd Performs a logical AND operation on a general register and another general register or immediate data. Rd Rs Rd, Rd #IMM Rd Performs a logical OR operation on a general register and another general register or immediate data. Rd Rs Rd, Rd #IMM Rd Performs a logical exclusive OR operation on a general register and another general register or immediate data. (Rd) (Rd) Takes the one's complement of general register contents.
OR
B/W/L
XOR
B/W/L
NOT
B/W/L
Note: * Refers to the operand size. B: Byte W: Word L: Longword
Table 2.6
Instruction SHAL SHAR SHLL SHLR ROTL ROTR ROTXL ROTXR
Shift Instructions
Size* B/W/L Function Rd (shift) Rd Performs an arithmetic shift on general register contents. 1-bit or 2-bit shifts are possible. Rd (shift) Rd Performs a logical shift on general register contents. 1-bit or 2-bit shifts are possible. Rd (rotate) Rd Rotates general register contents. 1-bit or 2-bit rotations are possible. Rd (rotate) Rd Rotates general register contents through the carry flag. 1-bit or 2-bit rotations are possible.
B/W/L
B/W/L
B/W/L
Note: * Refers to the operand size. B: Byte W: Word L: Longword
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Section 2 CPU
Table 2.7
Instruction BSET
Bit Manipulation Instructions (1)
Size* B Function 1 ( of ) Sets a specified bit in a general register or memory operand to 1. The bit number is specified by 3-bit immediate data or the lower three bits of a general register. 0 ( of ) Clears a specified bit in a general register or memory operand to 0. The bit number is specified by 3-bit immediate data or the lower three bits of a general register. ( of ) ( of ) Inverts a specified bit in a general register or memory operand. The bit number is specified by 3-bit immediate data or the lower three bits of a general register. ( of ) Z Tests a specified bit in a general register or memory operand and sets or clears the Z flag accordingly. The bit number is specified by 3-bit immediate data or the lower three bits of a general register. C ( of ) C ANDs the carry flag with a specified bit in a general register or memory operand and stores the result in the carry flag. C ( of ) C ANDs the carry flag with the inverse of a specified bit in a general register or memory operand and stores the result in the carry flag. The bit number is specified by 3-bit immediate data. C ( of ) C ORs the carry flag with a specified bit in a general register or memory operand and stores the result in the carry flag. C ( of ) C ORs the carry flag with the inverse of a specified bit in a general register or memory operand and stores the result in the carry flag. The bit number is specified by 3-bit immediate data.
BCLR
B
BNOT
B
BTST
B
BAND
B
BIAND
B
BOR
B
BIOR
B
Note: * Refers to the operand size. B: Byte
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Section 2 CPU
Table 2.7
Instruction BXOR
Bit Manipulation Instructions (2)
Size* B Function C ( of ) C XORs the carry flag with a specified bit in a general register or memory operand and stores the result in the carry flag. C ( of ) C XORs the carry flag with the inverse of a specified bit in a general register or memory operand and stores the result in the carry flag. The bit number is specified by 3-bit immediate data. ( of ) C Transfers a specified bit in a general register or memory operand to the carry flag. ( of ) C Transfers the inverse of a specified bit in a general register or memory operand to the carry flag. The bit number is specified by 3-bit immediate data. C ( of ) Transfers the carry flag value to a specified bit in a general register or memory operand. C ( of ) Transfers the inverse of the carry flag value to a specified bit in a general register or memory operand. The bit number is specified by 3-bit immediate data.
BIXOR
B
BLD
B
BILD
B
BST
B
BIST
B
Note: * Refers to the operand size. B: Byte
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Section 2 CPU
Table 2.8
Instruction Bcc
Branch Instructions
Size Function Branches to a specified address if a specified condition is true. The branching conditions are listed below. Mnemonic BRA(BT) BRN(BF) BHI BLS BCC(BHS) BCS(BLO) BNE BEQ BVC BVS BPL BMI BGE BLT BGT BLE Description Always (true) Never (false) High Low or same Carry clear (high or same) Carry set (low) Not equal Equal Overflow clear Overflow set Plus Minus Greater or equal Less than Greater than Less or equal Condition Always Never CZ=0 CZ=1 C=0 C=1 Z=0 Z=1 V=0 V=1 N=0 N=1 NV=0 NV=1 Z(N V) = 0 Z(N V) = 1
JMP BSR JSR RTS

Branches unconditionally to a specified address. Branches to a subroutine at a specified address. Branches to a subroutine at a specified address. Returns from a subroutine
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Section 2 CPU
Table 2.9
Instruction TRAPA RTE SLEEP LDC
System Control Instructions
Size* B/W
1
Function Starts trap-instruction exception handling. Returns from an exception-handling routine. Causes a transition to a power-down state. (EAs) CCR, (EAs) EXR* Moves the source operand contents or immediate data to CCR or 2 2 EXR* . Although CCR and EXR* are 8-bit registers, word-size transfers are performed between them and memory. The upper 8 bits are valid.
2 2 CCR (EAd), EXR* (EAd) 2 Transfers CCR or EXR* contents to a general register or memory. 2 Although CCR and EXR* are 8-bit registers, word-size transfers are performed between them and memory. The upper 8 bits are valid. 2 CCR #IMM CCR, EXR #IMM EXR* 2 Logically ANDs the CCR or EXR* contents with immediate data.
STC
B/W
ANDC ORC XORC NOP
B B B
CCR #IMM CCR, EXR #IMM EXR* 2 Logically ORs the CCR or EXR* contents with immediate data. 2 CCR #IMM CCR, EXR #IMM EXR* *2 contents with immediate data. Logically XORs the CCR or EXR
2
PC + 2 PC Only increments the program counter.
Notes: 1. Refers to the operand size. B: Byte W: Word 2. Supported only by the H8S/2268 Group.
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Section 2 CPU
Table 2.10 Block Data Transfer Instructions
Instruction EEPMOV.B Size Function if R4L 0 then Repeat @ER5+ @ER6+ R4L - 1 R4L Until R4L = 0 else next; if R4 0 then Repeat @ER5+ @ER6+ R4 - 1 R4 Until R4 = 0 else next; Transfers a data block. Starting from the address set in ER5, transfers data for the number of bytes set in R4L or R4 to the address location set in ER6. Execution of the next instruction begins as soon as the transfer is completed.
EEPMOV.W
2.6.2
Basic Instruction Formats
This LSI instructions consist of 2-byte (1-word) units. An instruction consists of an operation field (op field), a register field (r field), an effective address extension (EA field), and a condition field (cc). Figure 2.11 shows examples of instruction formats. * Operation Field Indicates the function of the instruction, the addressing mode, and the operation to be carried out on the operand. The operation field always includes the first four bits of the instruction. Some instructions have two operation fields. * Register Field Specifies a general register. Address registers are specified by 3 bits, and data registers by 3 bits or 4 bits. Some instructions have two register fields. Some have no register field. * Effective Address Extension 8, 16, or 32 bits specifying immediate data, an absolute address, or a displacement. * Condition Field Specifies the branching condition of Bcc instructions.
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(1) Operation field only op NOP, RTS, etc.
(2) Operation field and register fields op rn rm ADD.B Rn, Rm, etc.
(3) Operation field, register fields, and effective address extension op EA(disp) rn rm MOV.B @(d:16, Rn), Rm, etc.
(4) Operation field, effective address extension, and condition field op cc EA(disp) BRA d:16, etc.
Figure 2.11 Instruction Formats (Examples)
2.7
Addressing Modes and Effective Address Calculation
The H8S/2000 CPU supports the eight addressing modes listed in table 2.11. Each instruction uses a subset of these addressing modes. Arithmetic and logic instructions can use the register direct and immediate modes. Data transfer instructions can use all addressing modes except programcounter relative and memory indirect. Bit manipulation instructions use register direct, register indirect, or the absolute addressing mode to specify an operand, and register direct (BSET, BCLR, BNOT, and BTST instructions) or immediate (3-bit) addressing mode to specify a bit number in the operand.
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Section 2 CPU
Table 2.11 Addressing Modes
No. 1 2 3 4 5 6 7 8 Addressing Mode Register direct Register indirect Register indirect with displacement Register indirect with post-increment Register indirect with pre-decrement Absolute address Immediate Program-counter relative Memory indirect Symbol Rn @ERn @(d:16,ERn)/@(d:32,ERn) @ERn+ @-ERn @aa:8/@aa:16/@aa:24/@aa:32 #xx:8/#xx:16/#xx:32 @(d:8,PC)/@(d:16,PC) @@aa:8
2.7.1
Register DirectRn
The register field of the instruction specifies an 8-, 16-, or 32-bit general register containing the operand. R0H to R7H and R0L to R7L can be specified as 8-bit registers. R0 to R7 and E0 to E7 can be specified as 16-bit registers. ER0 to ER7 can be specified as 32-bit registers. 2.7.2 Register Indirect@ERn
The register field of the instruction code specifies an address register (ERn) which contains the address of the operand on memory. If the address is a program instruction address, the lower 24 bits are valid and the upper 8 bits are all assumed to be 0 (H'00). 2.7.3 Register Indirect with Displacement@(d:16, ERn) or @(d:32, ERn)
A 16-bit or 32-bit displacement contained in the instruction is added to an address register (ERn) specified by the register field of the instruction, and the sum gives the address of a memory operand. A 16-bit displacement is sign-extended when added.
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2.7.4
Register Indirect with Post-Increment or Pre-Decrement@ERn+ or @-ERn
Register indirect with post-increment@ERn+: The register field of the instruction code specifies an address register (ERn) which contains the address of a memory operand. After the operand is accessed, 1, 2, or 4 is added to the address register contents and the sum is stored in the address register. The value added is 1 for byte access, 2 for word transfer instruction, or 4 for longword transfer instruction. For the word or longword transfer instructions, the register value should be even. Register indirect with pre-decrement@-ERn: The value 1, 2, or 4 is subtracted from an address register (ERn) specified by the register field in the instruction code, and the result is the address of a memory operand. The result is also stored in the address register. The value subtracted is 1 for byte access, 2 for word transfer instruction, or 4 for longword transfer instruction. For the word or longword transfer instructions, the register value should be even. 2.7.5 Absolute Address@aa:8, @aa:16, @aa:24, or @aa:32
The instruction code contains the absolute address of a memory operand. The absolute address may be 8 bits long (@aa:8), 16 bits long (@aa:16), 24 bits long (@aa:24), or 32 bits long (@aa:32). Table 2.12 indicates the accessible absolute address ranges. To access data, the absolute address should be 8 bits (@aa:8), 16 bits (@aa:16), or 32 bits (@aa:32) long. For an 8-bit absolute address, the upper 24 bits are all assumed to be 1 (H'FFFF). For a 16-bit absolute address the upper 16 bits are a sign extension. A 32-bit absolute address can access the entire address space. A 24-bit absolute address (@aa:24) indicates the address of a program instruction. The upper 8 bits are all assumed to be 0 (H'00). Table 2.12 Absolute Address Access Ranges
Absolute Address Data address 8 bits (@aa:8) 16 bits (@aa:16) 32 bits (@aa:32) Program instruction address 24 bits (@aa:24) Note: * Normal mode is not available in this LSI. Normal Mode* H'FF00 to H'FFFF H'0000 to H'FFFF Advanced Mode H'FFFF00 to H'FFFFFF H'000000 to H'007FFF, H'FF8000 to H'FFFFFF H'000000 to H'FFFFFF
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2.7.6
Immediate#xx:8, #xx:16, or #xx:32
The instruction contains 8-bit (#xx:8), 16-bit (#xx:16), or 32-bit (#xx:32) immediate data as an operand. The ADDS, SUBS, INC and DEC instructions contain immediate data implicitly. Some bit manipulation instructions contain 3-bit immediate data in the instruction code, specifying a bit number. The TRAPA instruction contains 2-bit immediate data in its instruction code, specifying a vector address. 2.7.7 Program-Counter Relative@(d:8, PC) or @(d:16, PC)
This mode is used in the Bcc and BSR instructions. An 8-bit or 16-bit displacement contained in the instruction is sign-extended and added to the 24-bit PC contents to generate a branch address. Only the lower 24 bits of this branch address are valid; the upper 8 bits are all assumed to be 0 (H'00). The PC value to which the displacement is added is the address of the first byte of the next instruction, so the possible branching range is -126 to +128 bytes (-63 to +64 words) or -32766 to +32768 bytes (-16383 to +16384 words) from the branch instruction. The resulting value should be an even number. 2.7.8 Memory Indirect@@aa:8
This mode can be used by the JMP and JSR instructions. The instruction code contains an 8-bit absolute address specifying a memory operand. This memory operand contains a branch address. The upper bits of the absolute address are all assumed to be 0, so the address range is 0 to 255 (H'0000 to H'00FF in normal mode*, H'000000 to H'0000FF in advanced mode). In normal mode, the memory operand is a word operand and the branch address is 16 bits long. In advanced mode, the memory operand is a longword operand, the first byte of which is assumed to be 0 (H'00). Note that the first part of the address range is also the exception vector area. For further details, refer to section 4, Exception Handling. If an odd address is specified in word or longword memory access, or as a branch address, the least significant bit is regarded as 0, causing data to be accessed or instruction code to be fetched at the address preceding the specified address. (For further information, see section 2.5.2, Memory Data Formats.) Note: * Normal mode is not available in this LSI.
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Section 2 CPU
Specified by @aa:8
Branch address
Specified by @aa:8
Reserved Branch address
(a) Normal Mode*
Note: * Normal mode is not available in this LSI.
(a) Advanced Mode
Figure 2.12 Branch Address Specification in Memory Indirect Mode 2.7.9 Effective Address Calculation
Table 2.13 indicates how effective addresses are calculated in each addressing mode. In normal mode the upper 8 bits of the effective address are ignored in order to generate a 16-bit address.
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Section 2 CPU
Table 2.13 Effective Address Calculation (1)
No 1
Addressing Mode and Instruction Format
Register direct(Rn)
Effective Address Calculation
Effective Address (EA)
Operand is general register contents.
op 2
rm
rn 31
General register contents
Register indirect(@ERn)
0
31
24 23
0
Don't care
op 3
r
Register indirect with displacement @(d:16,ERn) or @(d:32,ERn)
31
General register contents
0 31 24 23 0
op
r
disp 31
Sign extension
Don't care 0 disp
4
Register indirect with post-increment or pre-decrement * Register indirect with post-increment @ERn+
31
General register contents
0
31
24 23
0
Don't care
op
r 31
1, 2, or 4
* Register indirect with pre-decrement @-ERn
0
General register contents
31
24 23
0
Don't care op r
Operand Size Byte Word Longword 1, 2, or 4
Offset 1 2 4
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Section 2 CPU
Table 2.13 Effective Address Calculation (2)
No 5
Addressing Mode and Instruction Format
Absolute address
Effective Address Calculation
Effective Address (EA)
@aa:8 op abs
31
24 23 H'FFFF
87
0
Don't care
@aa:16 op abs
31
24 23
16 15
0
Don't care Sign extension
@aa:24 op abs
31
24 23
0
Don't care
@aa:32 op abs 31 24 23 0
Don't care
6
Immediate
#xx:8/#xx:16/#xx:32 op IMM
Operand is immediate data.
7
Program-counter relative @(d:8,PC)/@(d:16,PC)
23
PC contents
0
op
disp
23
Sign extension
0 disp 31 24 23 0
Don't care
8
Memory indirect @@aa:8 * Normal mode*
31 op abs H'000000 15
87 abs
0
0
Memory contents
31
24 23
16 15 H'00
0
Don't care
* Advanced mode
31 op abs 31
Memory contents
87 H'000000 abs
0 31 24 23 Don't care 0
0
Note: * Normal mode is not available in this LSI.
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Section 2 CPU
2.8
Processing States
The H8S/2000 CPU has five main processing states: the reset state, exception handling state, program execution state, bus-released state, and power-down state. Figure 2.13 indicates the state transitions. * Reset State In this state, the CPU and all on-chip peripheral modules are initialized and not operating. When the RES input goes low, all current processing stops and the CPU enters the reset state. All interrupts are masked in the reset state. Reset exception handling starts when the RES signal changes from low to high. For details, refer to section 4, Exception Handling. The reset state can also be entered by a watchdog timer overflow. * Exception-Handling State The exception-handling state is a transient state that occurs when the CPU alters the normal processing flow due to an exception source, such as a reset, trace, interrupt, or trap instruction. The CPU fetches a start address (vector) from the exception vector table and branches to that address. For further details, refer to section 4, Exception Handling. * Program Execution State In this state, the CPU executes program instructions in sequence. * Bus-Released State (H8S/2268 Group only) In a product which has a bus master other than the CPU, such as a data transfer controller (DTC), the bus-released state occurs when the bus has been released in response to a bus request from a bus master other than the CPU. While the bus is released, the CPU halts operations. * Power-down State This is a power-down state in which the CPU stops operating. The program stop state occurs when a SLEEP instruction is executed or the CPU enters hardware standby mode. For further details, refer to section 22, Power-Down Modes.
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Section 2 CPU
End of bus request*4 Bus request*4 Program execution state
s bu 4 4 of * t* d est es nu Eq qu re re us B
Bus-released state*4
ep tio n
ha nd lin g
SLEEP instruction, SSBY = 0
Sleep mode
o ha f ex nd ce lin pti g on Re qu es tf or ex c
pt rru Inte
u req
est
SLEEP instruction, SSBY = 1
En d
Exception handling state
External interrupt request
Software standby mode
RES = High STBY = High, RES = Low Reset state*1 Hardware standby mode*2
Power-down state*3
Notes: 1. From any state except hardware standby mode, a transition to the reset state occurs whenever RES goes low. A transition can also be made to the reset state when the watchdog timer overflows. 2. From any state, a transition to hardware standby mode occurs when STBY goes low. 3. Apart from these states, there are also the watch mode, subactive mode, and the subsleep mode. See section 22, Power-Down Modes. 4. Supported only by the H8S/2268 Group.
Figure 2.13 State Transitions
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Section 2 CPU
2.9
2.9.1
Usage Notes
TAS Instruction
Only register ER0, ER1, ER4, or ER5 should be used when using the TAS instruction. The TAS instruction is not generated by the Renesas H8S and H8/300 Series C/C++ compilers. If the TAS instruction is used as a user-defined intrinsic function, ensure that only register ER0, ER1, ER4, or ER5 is used. 2.9.2 STM/LDM Instruction
With the STM or LDM instruction, the ER7 register is used as the stack pointer, and thus cannot be used as a register that allows save (STM) or restore (LDM) operation. With a single STM or LDM instruction, two to four registers can be saved or restored. The available registers are as follows: For two registers: ER0 and ER1, ER2 and ER3, or ER4 and ER5 For three registers: ER0 to ER2, or ER4 to ER6 For four registers: ER0 to ER3 For the Renesas Technology H8S or H8/300 Series C/C++ Compiler, the STM/LDM instruction including ER7 is not created. 2.9.3 Bit Manipulation Instructions
When bit-manipulation is used with registers that include write-only bits, bits to be manipulated may not be manipulated properly or bits unrelated to the bit-manipulation may be changed. Some values read from write-only bits are fixed and some are undefined. When such bits are the operands of bit-manipulation instructions that use read values in arithmetic operations (BNOT, BTST, BAND, BIAND, BOR, BIOR, BXOR, BIXOR, BLD, BILD), the desired bit-manipulation will not be executed. Also, bit-manipulation instructions that write back data according to the results of arithmetic operations (BSET, BCLR, BNOT, BST, BIST) may change bits that are not related to the bitmanipulation. Therefore, special care is necessary when using these instructions with registers that include write-only bits.
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Section 2 CPU
The BSET, BCLR, BNOT, BST and BIST instructions are executed as follows: 1. Data is read in bytes. 2. The operation corresponding to the instruction is applied to the specified bit of the data. 3. The byte produced by the bit-manipulation is written back. * Consider this example, where the BCLR instruction is executed to clear only bit 4 in P1DDR of Port 1. P1DDR is an 8-bit register that consists of write-only bits and specifies input or output for each pin of port 1. Reading of these bits is not valid, since values read are specified as undefined. In the following example, the BCLR instruction specifies P14 as an input. Before the operation, P17 to P14 are set as output pins and P13 to P10 are set as input pins. The value of P1DDR is H'F0.
P17 I/O P1DDR Output 1 P16 Output 1 P15 Output 1 P14 Output 1 P13 Input 0 P12 Input 0 P11 Input 0 P10 Input 0
To switch P14 from an output to an input, the value of bit 4 in P1DDR has to be changed from 1 to 0 (H'F0 to H'E0). The BCLR instruction used to clear bit 4 in P1DDR is as follows. BCLR #4, @P1DDR
However, the above bit-manipulation of the write-only P1DDR register may cause the following problem. The data in P1DDR is read in bytes. Data read from P1DDR is undefined. Thus, regardless of whether the value in the register is 0 or 1, it is impossible to tell which value will be read. All bits in P1DDR are write-only, thus read as undefined. The actual value in P1DDR is H'F0. Let us assume that the value read is H'F8, where the value of bit 3 is read as 1 rather than its actual value of 0.
P17 I/O P1DDR Read value Output 1 1 P16 Output 1 1 P15 Output 1 1 P14 Output 1 1 P13 Input 0 1 P12 Input 0 0 P11 Input 0 0 P10 Input 0 0
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Section 2 CPU
The target bit of the data read out is then manipulated. In this example, clearing bit 4 of H'F8 leaves us with H'E8.
P17 I/O P1DDR After bitmanipulation Output 1 1 P16 Output 1 1 P15 Output 1 1 P14 Output 1 0 P13 Input 0 1 P12 Input 0 0 P11 Input 0 0 P10 Input 0 0
After the bit-manipulation, The data is then written back to P1DDR, and execution of the BCLR instruction is complete.
P17 I/O P1DDR Write value Output 1 1 P16 Output 1 1 P15 Output 1 1 P14 Input 0 0 P13 Output 1 1 P12 Input 0 0 P11 Input 0 0 P10 Input 0 0
This instruction was meant to change the value of P1DDR to H'E0, but H'E8 was written back instead. P13, which should be an input pin, has been turned into an output pin. Note that while the error in this case occurred because bit 3 in P1DDR was read as 1, the values read from bits 7 to 0 in P1DDR are undefined. Bit-manipulation instructions that write back values might change any bit from 0 to 1 or 1 to 0. Section 2.9.4, Access Method for Registers with WriteOnly Bits, describes a way to avoid this possibility when changing the values of registers that include write-only bits. The BCLR instruction can be used to clear flags in the internal I/O registers to 0. In this case, if it is obvious that a given flag has been set to 1 because an interrupt handler has been entered, there is no need to read the flag . 2.9.4 Access Method for Registers with Write-Only Bits
A read value from a write-only bit using a data-transfer or a bit-manipulation instruction is undefined. To avoid using the read value for subsequent operations, follow the procedure shown below to access registers that include write-only bits. When writing to registers that include write-only bits, set up a work area in memory such as onchip RAM, write the data to the work area, read the data back from the memory, and then write the data to the registers that include write-only bits.
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Section 2 CPU
Write initial data to work area Writing initial value
Copy data from work area to register including write-only bit
Access data in work area (data-transfer and bit-manipulation instructions can be used)
Changing value of register including write-only bit
Copy data from work area to register including write-only bit
Figure 2.14 Flowchart of Access Method for Registers with Write-Only Bits * Consider the following example, where only bit 4 in P1DDR of port 1 is cleared. P1DDR is an 8-bit register that consists of write-only bits and specifies input or output for each pin of port 1. Reading of these bits is not valid, since values read are specified as undefined. In the following example, the BCLR instruction specifies P14 as an input. Start by writing the initial value H'F0, which will be written to P1DDR, to the work area (RAM0) in memory. MOV.B MOV.B MOV.B #H'F0, R0L R0L, @RAM0 R0L, @P1DDR
P17 I/O P1DDR RAM0 Output 1 1 P16 Output 1 1 P15 Output 1 1 P14 Output 1 1 P13 Input 0 0 P12 Input 0 0 P11 Input 0 0 P10 Input 0 0
P14 is now an output. To switch P14 from an output to an input, the value of bit 4 in P1DDR has to be changed from 1 to 0 (H'F0 to H'E0). Clear bit 4 of RAM0 using the BCLR instruction. BCLR #4, @RAM0
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Section 2 CPU P17 I/O P1DDR RAM0 Output 1 1 P16 Output 1 1 P15 Output 1 1 P14 Output 1 0 P13 Input 0 0 P12 Input 0 0 P11 Input 0 0 P10 Input 0 0
RAM locations are readable and writable, so there is no possibility of a problem if a bitmanipulation instruction is used to clear only bit 4 of RAM0. Read the value from RAM0 and then write it back to P1DDR. MOV.B MOV.B @RAM0, R0L,
P17 I/O P1DDR RAM0 Output 1 1 P16 Output 1 1
R0L @P1DDR
P15 Output 1 1 P14 Input 0 0 P13 Input 0 0 P12 Input 0 0 P11 Input 0 0 P10 Input 0 0
Following this procedure in access to registers that include write-only bits makes the behavior of the program independent of the type of instruction.
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Section 2 CPU
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Section 3 MCU Operating Modes
Section 3 MCU Operating Modes
3.1 Operating Mode Selection
This LSI supports the advanced single-chip mode. The operating mode is determined by the setting of the mode pins (MD2 and MD1). Only mode 7 can be used in this LSI. Therefore, all mode pins must be fixed high. Do not change the mode pin settings during operation. Table 3.1 MCU Operating Mode Selection
External Data Bus MD1 1 CPU Operating Mode Advanced mode Description Single-chip mode On-Chip ROM Enabled Initial Width Max. Width
MCU Operating Mode MD2 7 1
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Section 3 MCU Operating Modes
3.2
Register Description
The following register is related to the operating mode. * Mode control register (MDCR) 3.2.1 Mode Control Register (MDCR)
MDCR monitors the current operating mode.
Bit 7 6 to 3 2 1 Bit Name

Initial Value 1 All 0

R/W R/W
Descriptions Reserved This bit is always read as 1 and cannot be modified. Reserved These bits are always read as 0 and cannot be modified. Mode Select 2 and 1 These bits indicate the input levels at pins MD2 and MD1 (the current operating mode). Bits MDS2 and MDS1 correspond to MD2 and MD1, respectively. MDS2 and MDS1 are read-only bits and they cannot be written to. The mode pin (MD2 and MD1) input levels are latched into these bits when MDCR is read. These latches are canceled by a reset. These latches are canceled by a reset. Reserved This bit is always read as 1 and cannot be modified.
MDS2 MDS1
R R
0
1
3.3
Operating Mode
The CPU can access a 16-Mbyte address space in advanced mode. On-chip ROM is valid and the external address cannot be used.
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Section 3 MCU Operating Modes
3.4
Address Map
Figure 3.1 shows the address map in each operating mode.
H8S/2268 ROM: 256 kbytes, RAM: 16 kbytes Mode 7 Advanced single-chip mode H'000000 H'000000 H8S/2266 ROM: 128 kbytes, RAM: 8 kbytes Mode 7 Advanced single-chip mode
On-chip RAM
On-chip RAM
H'01FFFF
H'03FFFF
H'FFB000 On-chip RAM H'FFEFBF H'FFD000 H'FFEFBF On-chip RAM
H'FFF800 H'FFFF3F H'FFFF60 H'FFFFC0 H'FFFFFF
Internal I/O registers
H'FFF800 H'FFFF3F H'FFFF60 H'FFFFC0 H'FFFFFF
Internal I/O registers
Internal I/O registers On-chip RAM
Internal I/O registers On-chip RAM
Figure 3.1 Address Map (1)
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Section 3 MCU Operating Modes
H8S/2265 and H8S/2264 ROM: 128 kbytes, RAM: 4 kbytes Mode 7 Advanced single-chip mode H'000000 H'000000
H8S/2262 ROM: 64 kbytes, RAM: 2 kbytes Mode 7 Advanced single-chip mode
On-chip RAM On-chip RAM H'00FFFF
H'01FFFF
H'FFE000 H'FFEFBF H'FFF800 H'FFFF3F H'FFFF60 H'FFFFC0 H'FFFFFF
On-chip RAM
H'FFE800 H'FFEFBF H'FFF800 H'FFFF3F H'FFFF60 H'FFFFC0 H'FFFFFF
On-chip RAM
Internal I/O registers
Internal I/O registers
Internal I/O registers On-chip RAM
Internal I/O registers On-chip RAM
Figure 3.1 Address Map (2)
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Section 4 Exception Handling
Section 4 Exception Handling
4.1 Exception Handling Types and Priority
As table 4.1 indicates, exception handling may be caused by a reset, trace*, trap instruction, or interrupt. Exception handling is prioritized as shown in table 4.1. If two or more exceptions occur simultaneously, they are accepted and processed in order of priority. Trap instruction exception handling requests are accepted at all times in program execution state. Exception sources, the stack structure, and operation of the CPU vary depending on the interrupt control mode set by the INTM0 and INTM1 bits in SYSCR. Table 4.1
Priority High
Exception Types and Priority
Exception Type Reset Start of Exception Handling Starts immediately after a low-to-high transition at the RES pin, or when the watchdog timer overflows. The CPU enters the reset state when the RES pin is low. Starts when execution of the current instruction or exception handling ends, if the trace (T) bit in the EXR is set to 1. Traces are enabled only in interrupt control mode 2. Trace exception handling is not executed after execution of an RTE instruction. Starts when execution of the current instruction or exception handling ends, if an interrupt request has been issued. Interrupt detection is not performed on completion of ANDC, ORC, XORC, or LDC instruction execution, or on completion of reset exception handling. Started by execution of a trap instruction (TRAPA). Trap instruction exception handling requests are accepted at all times in program execution state.
Trace*
Interrupt
Trap instruction Low
Note: * Supported only by the H8S/2268 Group.
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Section 4 Exception Handling
4.2
Exception Sources and Exception Vector Table
Different vector addresses are assigned to different exception sources. Table 4.2 lists the exception sources and their vector addresses. Table 4.2 Exception Handling Vector Table
Vector Number 0 1 2 3 4 Trace*
4
Exception Source Reset Reserved for system use
Vector Address Advanced Mode* H'0000 to H'0003 H'0004 to H'0007 H'0008 to H'000B H'000C to H'000F H'0010 to H'0013 H'0014 to H'0017 H'0018 to H'001B H'001C to H'001F H'0020 to H'0023 H'0024 to H'0027 H'0028 to H'002B H'002C to H'002F H'0030 to H'0033 H'0034 to H'0037 H'0038 to H'003B H'003C to H'003F H'0040 to H'0043 H'0044 to H'0047 H'0048 to H'004B H'004C to H'004F H'0050 to H'0053 H'0054 to H'0057 H'0058 to H'005B H'005C to H'005F
1
5 *3 6 7 8 9 10 11
Direct transitions
External interrupt (NMI) Trap instruction (four sources)
Reserved for system use
12 13 14 15
External interrupt
IRQ0 IRQ1
16 17 18 19 20
4
Reserved for system use External interrupt IRQ3 IRQ4 IRQ5* Reserved for system use
21 22 23
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Section 4 Exception Handling Exception Source Internal interrupt*
2
Vector Number 24 107 108 120 123
Vector Address Advanced Mode* H'0060 to H'0063 H'01AC to H'01AF H'01B0 to H'01B3 H'01E0 to H'01E3 H'01EC to H'01EF
1
External interrupt WKP0 to WKP7 Internal interrupt
Notes: 1. Lower 16 bits of the address. 2. For details of internal interrupt vectors, see section 5.4.3, Interrupt Exception Handling Vector Table. 3. For details on direct transitions, see section 22.10, Direct Transitions. 4. Supported only by the H8S/2268 Group.
4.3
Reset
A reset has the highest exception priority. When the RES pin goes low, all processing halts and this LSI enters the reset. A reset initializes the internal state of the CPU and the registers of on-chip peripheral modules. The interrupt control mode is 0 immediately after reset. When the RES pin goes high from the low state, this LSI starts reset exception handling. The chip can also be reset by overflow of the watchdog timer. For details see section 12, Watchdog Timer (WDT). 4.3.1 Reset Exception Handling
When the RES pin goes low, this LSI enters the reset. To ensure that this LSI is reset, hold the RES pin low for at least 20 ms at power-up. To reset the chip during operation, hold the RES pin low for at least 20 states. When the RES pin goes high after being held low for the necessary time, this LSI starts reset exception handling as follows. 1. The internal state of the CPU and the registers of the on-chip peripheral modules are initialized, the T bit in EXR* is cleared to 0, and the I bits in EXR* and CCR is set to 1. 2. The reset exception handling vector address is read and transferred to the PC, and program execution starts from the address indicated by the PC. Note: * Supported only by the H8S/2268 Group.
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Section 4 Exception Handling
Figures 4.1 shows an example of the reset sequence.
Prefetch of first Internal processing program instruction
Vector fetch
RES
Internal address bus
(1)
(3)
(5)
Internal read signal
Internal write signal Internal data bus
High
(2)
(4)
(6)
(1)(3) Reset exception handling vector address(when reset, (1)=H'000000, (3)=H'000002) (2)(4) Start address (contents of reset exception handling vector address) (5) Start address ((5)=(2)(4)) (6) First program instruction
Figure 4.1 Reset Sequence (Advanced Mode with On-chip ROM Enabled) 4.3.2 Interrupts after Reset
If an interrupt is accepted after a reset and before the stack pointer (SP) is initialized, the PC and CCR will not be saved correctly, leading to a program crash. To prevent this, all interrupt requests, including NMI, are disabled immediately after a reset. Since the first instruction of a program is always executed immediately after the reset state ends, make sure that this instruction initializes the stack pointer (example: MOV.L #xx: SP). 4.3.3 State of On-Chip Peripheral Modules after Reset Release
After reset release, MSTPCRA is initialized to H'3F, MSTPCRB to MSTPCRD are initialized to H'FF, and all modules except the DTC (only for the H8S/2268 Group) enter module stop mode. Consequently, on-chip peripheral module registers cannot be read or written to. Register reading and writing is enabled when the module stop mode is exited.
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Section 4 Exception Handling
4.4
Traces (Supported Only by the H8S/2268 Group)
Traces are enabled in interrupt control mode 2. Trace mode is not activated in interrupt control mode 0, irrespective of the state of the T bit. For details of interrupt control modes, see section 5, Interrupt Controller. If the T bit in EXR is set to 1, trace mode is activated. In trace mode, a trace exception occurs on completion of each instruction. Trace mode is not affected by interrupt masking. Table 4.3 shows the state of CCR and EXR after execution of trace exception handling. Trace mode is canceled by clearing the T bit in EXR to 0. Interrupts are accepted even within the trace exception handling routine. The T bit saved on the stack retains its value of 1, and when control is returned from the trace exception handling routine by the RTE instruction, trace mode resumes. Trace exception handling is not carried out after execution of the RTE instruction. Table 4.3 Status of CCR and EXR after Trace Exception Handling
CCR I 1 UI -- I2 to I0 -- EXR T 0
Interrupt Control Mode 0 2 Legend: 1: Set to 1 0: Cleared to 0 --: Retains value prior to execution
Trace exception handling cannot be used.
4.5
Interrupts
Interrupts are controlled by the interrupt controller. The interrupt controller of the H8S/2268 Group has two interrupt control modes and can assign interrupts other than NMI to eight priority/mask levels to enable multiplexed interrupt control. For details, refer to section 5, Interrupt Controller. Interrupt exception handling is conducted as follows: 1. The values in the program counter (PC), condition code register (CCR), and extended control register (EXR)* are saved to the stack. 2. The interrupt mask bit is updated and the T bit* is cleared to 0.
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Section 4 Exception Handling
3. A vector address corresponding to the interrupt source is generated, the start address is loaded from the vector table to the PC, and program execution begins from that address. Note: * Supported only by the H8S/2268 Group.
4.6
Trap Instruction
Trap instruction exception handling starts when a TRAPA instruction is executed. Trap instruction exception handling can be executed at all times in the program execution state. Trap instruction exception handling is conducted as follows: 1. The values in the program counter (PC), condition code register (CCR), and extended control register (EXR)* are saved to the stack. 2. The interrupt mask bit is updated and the T bit* is cleared. 3. A vector address corresponding to the interrupt source is generated, the start address is loaded from the vector table to the PC, and program execution starts from that address. The TRAPA instruction fetches a start address from a vector table entry corresponding to a vector number from 0 to 3, as specified in the instruction code. Table 4.4 shows the status of CCR and EXR* after execution of trap instruction exception handling. Table 4.4 Status of CCR and EXR* after Trap Instruction Exception Handling
CCR I 1 1 UI -- -- I2 to I0 -- -- EXR* T -- 0
Interrupt Control Mode 0 2*
Legend: 1: Set to 1 0: Cleared to 0 --: Retains value prior to execution Note: * Supported only by the H8S/2268 Group.
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Section 4 Exception Handling
4.7
Stack Status after Exception Handling
Figures 4.2 shows the stack after completion of trap instruction exception handling and interrupt exception handling.
SP
EXR RESERVED*1
SP
CCR PC (24 bit) PC (24 bit)
Interrupt control mode 0
Interrupt control mode*2
Note: 1. Ignored on return 2. Supported only by the H8S/2268 Group.
Figure 4.2 Stack Status after Exception Handling (Advanced Mode)
4.8
Usage Note
When accessing word data or longword data, this LSI assumes that the lowest address bit is 0. The stack should always be accessed by word transfer instruction or longword transfer instruction, and the value of the stack pointer (SP, ER7) should always be kept even. Use the following instructions to save registers:
PUSH.W PUSH.L Rn ERn (or MOV.W Rn, @-SP) (or MOV.L ERn, @-SP)
Use the following instructions to restore registers:
POP.W POP.L Rn ERn (or MOV.W @SP+, Rn) (or MOV.L @SP+, ERn)
Setting SP to an odd value may lead to a malfunction. Figure 4.3 shows an example of what happens when the SP value is odd.
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Section 4 Exception Handling
CCR SP PC
SP
R1L PC
H'FFFEFA H'FFFEFB H'FFFEFC H'FFFEFD
SP
H'FFFEFF
SP set to H'FFFEFF
TRAP instruction executed Data saved above SP
MOV.B R1L, @-ER7 executed Contents of CCR lost
Legend: CCR: PC: R1L: SP: Condition code register Program counter General register R1L Stack pointer
Note: This diagram illustrates an example in which the interrupt control mode is 0, in advanced mode.
Figure 4.3 Operation when SP Value Is Odd
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Section 5 Interrupt Controller
Section 5 Interrupt Controller
5.1 Features
This LSI controls interrupts with the interrupt controller. The interrupt controller has the following features: * Two interrupt control modes (H8S/2268 Group only) Any of two interrupt control modes can be set by means of the INTM1 and INTM0 bits in the system control register (SYSCR). * Priorities settable with IPR (H8S/2268 Group only) An interrupt priority register (IPR) is provided for setting interrupt priorities. Eight priority levels can be set for each module for all interrupts except NMI. NMI is assigned the highest priority level of 8, and can be accepted at all times. * Independent vector addresses All interrupt sources except WKP7 to WKP0 are assigned independent vector addresses, making it unnecessary for the source to be identified in the interrupt handling routine. * External interrupts H8S/2268 Group: 14 (NMI, IRQ5 to IRQ3, IRQ1, IRQ0, and WKP7 to WKP0) H8S/2264 Group: 13 (NMI, IRQ4, IRQ3, IRQ1, IRQ0, and WKP7 to WKP0) NMI is the highest-priority interrupt, and is accepted at all times. Rising edge or falling edge can be selected for NMI. Falling edge, rising edge, or both edge detection, or level sensing, can be independently selected for IRQ5 to IRQ3, IRQ1, and IRQ0. WKP7 to WKP0 are accepted at a falling edge * DTC control (H8S/2268 Group only) The DTC can be activated by an interrupt request. A block diagram of the interrupt controller for the H8S/2268 Group is shown in figure 5.1, and that for the H8S/2264 Group is shown in figure 5.2
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Section 5 Interrupt Controller
INTM1, INTM0 SYSCR NMIEG NMI input IRQ input NMI input unit IRQ input unit ISR ISCR WKP input IER Priority determination I IENR1 Internal interrupt request SWDTEND to TEI2 IPR Interrupt controller Legend: ISCR: IRQ sense control register IER: IRQ enable register IRQ status register ISR: IENR1: Interrupt enable register1 IWPR: Wakeup interrupt request register IPR: Interrupt priority register SYSCR: System control register Interrupt request Vector number
CPU
WKP input unit IWPR
CCR I2 to I0 EXR
Figure 5.1 Block Diagram of Interrupt Controller for H8S/2268 Group
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Section 5 Interrupt Controller
INTM1, INTM0 SYSCR NMIEG NMI input IRQ input NMI input unit IRQ input unit ISR ISCR WKP input IER Priority determination I IENR1 Internal interrupt request WOVI0 to TEI2 Interrupt request Vector number
CPU
WKP input unit IWPR
CCR
Interrupt controller Legend: ISCR: IRQ sense control register IRQ enable register IER: IRQ status register ISR: IENR1: Interrupt enable register1 IWPR: Wakeup interrupt request register SYSCR: System control register
Figure 5.2 Block Diagram of Interrupt Controller for H8S/2264 Group
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Section 5 Interrupt Controller
5.2
Input/Output Pins
Table 5.1 summarizes the pins of the interrupt controller. Table 5.1
Name NMI IRQ5* IRQ4 IRQ3 IRQ2 IRQ1 IRQ0 WKP7 WKP6 WKP5 WKP4 WKP3 WKP2 WKP1 WKP0
Pin Configuration
I/O Input Input Input Input Input Input Input Input Input Input Input Input Input Input Input Maskable external interrupts Accepted at a falling edge Function Nonmaskable external interrupt Rising or falling edge can be selected Maskable external interrupts Rising, falling, or both edges, or level sensing, can be selected
Note: * Supported only by the H8S/2268 Group.
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Section 5 Interrupt Controller
5.3
Register Descriptions
The interrupt controller has the following registers. * System control register (SYSCR) * IRQ sense control register H (ISCRH) * IRQ sense control register L (ISCRL) * IRQ enable register (IER) * IRQ status register (ISR) * Interrupt priority register A (IPRA)* * Interrupt priority register B (IPRB)* * Interrupt priority register C (IPRC)* * Interrupt priority register D (IPRD)* * Interrupt priority register E (IPRE)* * Interrupt priority register F (IPRF)* * Interrupt priority register G (IPRG)* * Interrupt priority register I (IPRI)* * Interrupt priority register J (IPRJ)* * Interrupt priority register K (IPRK)* * Interrupt priority register L (IPRL)* * Interrupt priority register M (IPRM)* * Interrupt priority register O (IPRO)* * Wakeup interrupt request register (IWPR) * Interrupt enable register 1 (IENR1) Note: * Supported only by the H8S/2268 Group. 5.3.1 System Control Register (SYSCR)
SYSCR selects the interrupt control mode and the detected edge for NMI.
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Section 5 Interrupt Controller Initial Value 0 0 0 0
Bit 7 6 5 4
Bit Name INTM1 INTM0
R/W R/W R/W R/W
Descriptions Reserved The write value should always be 0. Reserved This bit is always read as 0, and cannot be modified. Interrupt Control Mode 1 and 0 H8S/2268 Group: These bits select the control mode of the interrupt controller. 00: Interrupt control mode 0 (interrupts are controlled by the I bit.) 01: Setting prohibited 10: Interrupt control mode 2 (Interrupts are controlled by the I2 to I0 bits and IPR.) 11: Setting prohibited H8S/2264 Group: The write value should always be 0. 00: Interrupt control mode 0 (interrupts are controlled by the I bit.) 01: Setting prohibited 10: Setting prohibited 11: Setting prohibited
3
NMIEG
0
R/W
NMI Edge Select Selects the valid edge of the NMI interrupt input. 0: An interrupt is requested at the falling edge of NMI input 1: An interrupt is requested at the rising edge of NMI input
2 1 0

0 0 1
R/W R/W
Reserved The write value should always be 0. Reserved This bit is always read as 0, and cannot be modified. Reserved The write value should always be 0.
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Section 5 Interrupt Controller
5.3.2
Interrupt Priority Registers A to G, I to M, and O (IPRA to IPRG, IPRI to IPRM, IPRO) (H8S/2268 Group Only)
The IPR registers are thirteen 8-bit readable/writable registers that set priorities (levels 7 to 0) for interrupts other than NMI. The correspondence between interrupt sources and IPR settings is shown in table 5.2. Setting a value in the range from H'0 to H'7 in the 3-bit groups of bits 0 to 2 and 4 to 6 sets the priority of the corresponding interrupt.
Bit 7 6 5 4 Bit Name IPR6 IPR5 IPR4 Initial Value 0 1 1 1 R/W R/W R/W R/W Description Reserved This bit is always read as 0, and cannot be modified. Sets the priority of the corresponding interrupt source 000: Priority level 0 (Lowest) 001: Priority level 1 010: Priority level 2 011: Priority level 3 100: Priority level 4 101: Priority level 5 110: Priority level 6 111: Priority level 7 (Highest) 3 2 1 0 IPR2 IPR1 IPR0 0 1 1 1 R/W R/W R/W Reserved This bit is always read as 0, and cannot be modified. Sets the priority of the corresponding interrupt source. 000: Priority level 0 (Lowest) 001: Priority level 1 010: Priority level 2 011: Priority level 3 100: Priority level 4 101: Priority level 5 110: Priority level 6 111: Priority level 7 (Highest)
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Section 5 Interrupt Controller
5.3.3
IRQ Enable Register (IER)
IER controls the enabling and disabling of interrupt requests IRQn (H8S/2268 Group: n = 5 to 3, 1, 0; H8S/2264 Group: n = 4, 3, 1, 0).
Bit 7, 6 5 Bit Name IRQ5E Initial Value All 0 0 R/W R/W R/W Description Reserved The write value should always be 0. H8S/2268 Group: IRQ5 Enable The IRQ5 interrupt request is enabled when this bit is 1. H8S/2264 Group: Reserved The write value should always be 0. 4 3 2 1 0 IRQ4E IRQ3E IRQ1E IRQ0E 0 0 0 0 0 R/W R/W R/W R/W R/W IRQ4 Enable The IRQ4 interrupt request is enabled when this bit is 1. IRQ3 Enable The IRQ3 interrupt request is enabled when this bit is 1. Reserved The write value should always be 0. IRQ1 Enable The IRQ1 interrupt request is enabled when this bit is 1. IRQ0 Enable The IRQ0 interrupt request is enabled when this bit is 1.
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Section 5 Interrupt Controller
5.3.4
IRQ Sense Control Registers H and L (ISCRH and ISCRL)
The ISCR registers select the source that generates an interrupt request at pins IRQn (H8S/2268 Group: n = 5 to 3, 1, 0; H8S/2264 Group: n = 4, 3, 1, 0). Specifiable sources are the falling edge, rising edge, or both edge detection, and level sensing.
Bit 15 to 12 11 10 Bit Name IRQ5SCB IRQ5SCA Initial Value All 0 0 0 R/W R/W R/W R/W Description Reserved The write value should always be 0. H8S/2268 Group: IRQ5 Sense Control B IRQ5 Sense Control A 00: Interrupt request generated at IRQ5 input level low 01: Interrupt request generated at falling edge of IRQ5 input 10: Interrupt request generated at rising edge of IRQ5 input 11: Interrupt request generated at both falling and rising edges of IRQ5 input H8S/2264 Group: Reserved The write value should always be 0. 9 8 IRQ4SCB IRQ4SCA 0 0 R/W R/W IRQ4 Sense Control B IRQ4 Sense Control A 00: Interrupt request generated at IRQ4 input level low 01: Interrupt request generated at falling edge of IRQ4 input 10: Interrupt request generated at rising edge of IRQ4 input 11: Interrupt request generated at both falling and rising edges of IRQ4 input
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Section 5 Interrupt Controller Initial Value 0 0
Bit 7 6
Bit Name IRQ3SCB IRQ3SCA
R/W R/W R/W
Description IRQ3 Sense Control B IRQ3 Sense Control A 00: Interrupt request generated at IRQ3 input level low 01: Interrupt request generated at falling edge of IRQ3 input 10: Interrupt request generated at rising edge of IRQ3 input 11: Interrupt request generated at both falling and rising edges of IRQ3 input
5, 4 3 2
IRQ1SCB IRQ1SCA
All 0 0 0
R/W R/W R/W
Reserved The write value should always be 0. IRQ1 Sense Control B IRQ1 Sense Control A 00: Interrupt request generated at IRQ1 input level low 01: Interrupt request generated at falling edge of IRQ1 input 10: Interrupt request generated at rising edge of IRQ1 input 11: Interrupt request generated at both falling and rising edges of IRQ1 input
1 0
IRQ0SCB IRQ0SCA
0 0
R/W R/W
IRQ0 Sense Control B IRQ0 Sense Control A 00: Interrupt request generated at IRQ0 input level low 01: Interrupt request generated at falling edge of IRQ0 input 10: Interrupt request generated at rising edge of IRQ0 input 11: Interrupt request generated at both falling and rising edges of IRQ0 input
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Section 5 Interrupt Controller
5.3.5
IRQ Status Register (ISR)
ISR indicates the status of IRQn (H8S/2268 Group: n = 5 to 3, 1, 0; H8S/2264 Group: n = 4, 3, 1, 0) interrupt requests.
Bit 7, 6 5 Bit Name IRQ5F Initial Value All 0 0 R/W R/W
1
Description Reserved The write value should always be 0.
R/(W)* H8S/2268 Group: IRQ5 Flag Indicates the status of an IRQ5 interrupt request. [Setting condition] When the interrupt source selected by the ISCR registers occurs [Clearing conditions] * * * * Cleared by reading IRQ5F flag when IRQ5F = 1, then writing 0 to IRQ5F flag When interrupt exception handling is executed when low-level detection is set and IRQ5 input is high level When IRQ5 interrupt exception handling is executed when falling, rising, or both-edge detection is set When the DTC is activated by an IRQ5 interrupt, and the DISEL bit in MRB of the DTC is cleared to 0
H8S/2264 Group: Reserved The write value should always be 0.
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Section 5 Interrupt Controller Initial Value 0 0
Bit 4 3
Bit Name IRQ4F IRQ3F
R/W R/(W) R/(W) *2 *2
Description IRQ4 and IRQ3 Flags Indicate the status of IRQ4 and IRQ3 interrupt requests. [Setting condition] When the interrupt source selected by the ISCR registers occurs [Clearing conditions] * * Cleared by reading IRQnF flag when IRQnF = 1, then writing 0 to IRQnF flag When interrupt exception handling is executed when low-level detection is set and IRQn input is high When IRQn interrupt exception handling is executed when falling, rising, or both-edge detection is set When the DTC is activated by an IRQn interrupt, and the DISEL bit in MRB of the DTC is cleared to 0 (H8S/2268 Group only)
*
*
2
0
R/W
Reserved The write value should always be 0.
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Section 5 Interrupt Controller Initial Value 0 0
Bit 1 0
Bit Name IRQ1F IRQ0F
R/W R/(W) R/(W) *2 *2
Description IRQ1 and IRQ0 Flags Indicate the status of IRQ1 and IRQ0 interrupt requests. [Setting condition] When the interrupt source selected by the ISCR registers occurs [Clearing conditions] * * Cleared by reading IRQnF flag when IRQnF = 1, then writing 0 to IRQnF flag When interrupt exception handling is executed when low-level detection is set and IRQn input is high When IRQn interrupt exception handling is executed when falling, rising, or both-edge detection is set When the DTC is activated by an IRQn interrupt, and the DISEL bit in MRB of the DTC is cleared to 0 (H8S/2268 Group only)
*
*
Notes: 1. In the H8S/2268 Group, only 0 can be written to this bit to clear the flag. In the H8S/2264 Group, this bit is readable/writable. 2. Only 0 can be written to this bit to clear the flag.
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Section 5 Interrupt Controller
5.3.6
Wakeup Interrupt Request Register (IWPR)
IWPR indicates the status of WKP7 to WKP0 interrupt requests.
Bit 7 6 5 4 3 2 1 0 Bit Name IWPF7 IWPF6 IWPF5 IWPF4 IWPF3 IWPF2 IWPF1 IWPF0 Initial Value 0 0 0 0 0 0 0 0 R/W Description
R/(W)* Wakeup Interrupt Request Flags R/(W)* Indicate the status of WKP7 to WKP0 interrupt requests. R/(W)* [Setting condition] R/(W)* When WKP7 to WKP0 pins are set as wakeup inputs and R/(W)* these pins have a falling edge. R/(W)* [Clearing condition] R/(W)* When this bit reads 1 and then write 0. R/(W)*
Note: Only 0 can be written to this bit to clear the flag.
5.3.7
Interrupt Enable Register 1 (IENR1)
IENR1 enables/disables wakeup interrupt requests.
Bit 7 Bit Name IENWP Initial Value 0 R/W R/W Description Wakeup Interrupt Enable Enables/disables WKP7 to WKP0 interrupt requests 0: WKP7 to WKP0 pin interrupt requests are disabled. 1: WKP7 to WKP0 pin interrupt requests are enabled. 6 to 1 0 All 0 0 R/W Reserved These bits are always read as 0 and cannot be modified. Reserved This bit should always be 0 when it is read.
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Section 5 Interrupt Controller
5.4
5.4.1
Interrupt Sources
External Interrupts
There are 14 external interrupts for the H8S/2268 Group: NMI, IRQ5 to IRQ3, IRQ1, IRQ0, and WKP7 to WKP0, and 13 external interrupts for the H8S/2264 Group: NMI, IRQ4, IRQ3, IRQ1, IRQ0, and WKP7 to WKP0. These interrupts can be used to restore this LSI from software standby mode. NMI Interrupt: NMI is the highest-priority interrupt, and is always accepted by the CPU regardless of the interrupt control mode or the status of the CPU interrupt mask bits. The NMIEG bit in SYSCR can be used to select whether an interrupt is requested at a rising edge or a falling edge on the NMI pin. IRQn Interrupts (H8S/2268 Group: n = 5 to 3, 1, and 0; H8S/2264 Group: n = 4, 3, 1, and 0): IRQn interrupts are requested by an input signal at IRQn pins. IRQn interrupts have the following features: * Using ISCR, it is possible to select whether an interrupt is generated by a low level, falling edge, rising edge, or both edges, at IRQn pins. * Enabling or disabling of IRQn interrupt requests can be selected with IER. * The interrupt priority level can be set with IPR. (H8S/2268 Group only) * The status of IRQn interrupt requests is indicated in ISR. ISR flags can be cleared to 0 by software. A block diagram of IRQn interrupts is shown in figure 5.3.
IRQnE IRQnSCA, IRQnSCB IRQnF Edge/level detection circuit IRQn input Clear signal Note: H8S/2268 Group: n = 5 to 3, 1, 0 H8S/2264 Group: n = 4, 3, 1, 0 S R Q IRQn interrupt request
Figure 5.3 Block Diagram of IRQn Interrupts
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Section 5 Interrupt Controller
The set timing for IRQnF is shown in figure 5.4.
IRQn Input Pin
IRQnF Note: H8S/2268 Group: n = 5 to 3, 1, 0 H8S/2264 Group: n = 4, 3, 1, 0
Figure 5.4 Set Timing for IRQnF The detection of IRQn interrupts does not depend on whether the relevant pin has been set for input or output. However, when a pin is used as an external interrupt input pin, do not clear the corresponding DDR to 0; and use the pin as an I/O pin for another function. IRQnF interrupt request flag is set to 1 when the setting condition is satisfied, regardless of IER settings. Accordingly, refer to only necessary flags. WKP7 to WKP0 Interrupts:WKP7 to WKP0 interrupts are requested by falling edge input signal at WKP7 to WKP0 pins. WKP7 to WKP0 interrupts have the following features: * WPCR selects whether the PJn/WKPn/SEGn+1 pin is used as the PJn pin or WKPn pin when the PJn/WKPn/SEGn+1 pin is not used as the SEGn+1 pin. (n = 7 to 0) For pin switching, see 9.8.5 Wakeup Control Register (WPCR). * IENR1 can be used to select enabling or disabling of WKP7 to WKP0 interrupt requests. * IPR sets the interrupt priority level. (H8S/2268 Group only) * IWPR indicates the status of WKP7 to WKP0 interrupt requests. IWPR flag can be cleared to 0 by software. The block diagram of interrupts WKP7 to WKP0 is shown in figure 5.5.
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Section 5 Interrupt Controller
IENWP
WKP7 to WKP0 Interrupt request
Falling edge detection circuit WKP7 Input
IWPF7 S R Q
Falling edge detection circuit WKP6 Input
IWPF6 S R Q
WKP0 Input
Figure 5.6 shows the IWPFn setting timing.
The vector number for the WKP7 to WKP0 interrupt exception handling is 108. Eight interrupt pins are assigned to one vector number. Accordingly, determine the source using an exception handling routine. The detection of interrupts WKP7 to WKP0 does not depend on whether the relevant pin has been set for input or output. However, when a pin is used as an external interrupt input pin, do not clear
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-
-
Falling edge detection circuit
Figure 5.5 Block Diagram of Interrupts WKP7 to WKP0
S R Clear signal
IWPF0 Q
-
WKPn input
IWPFn (n = 7 to 0)
Figure 5.6 IWPFn Setting Timing
Section 5 Interrupt Controller
the corresponding DDR to 0; and use the pin as an I/O pin for another function. IRQnF interrupt request flag is set to 1 when the setting condition is satisfied, regardless of IER settings. Accordingly, refer to only necessary flags. 5.4.2 Internal Interrupts
For each on-chip peripheral module, there are flags that indicate the interrupt request status, and enable bits that select enabling or disabling of these interrupts. If both of these are set to 1 for a particular interrupt source, an interrupt request is issued to the interrupt controller. 5.4.3 Interrupt Exception Handling Vector Table
Table 5.2 shows interrupt exception handling sources, vector addresses, and interrupt priorities. For default priorities, the lower the vector number, the higher the priority. Priorities among modules can be set by means of the IPR. (H8S/2268 Group only) Modules set at the same priority will conform to their default priorities. Priorities within a module are fixed.
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Section 5 Interrupt Controller
Table 5.2
Interrupt Sources, Vector Addresses, and Interrupt Priorities
Origin of Interrupt Source NMI IRQ0 IRQ1 Reserved IRQ3 IRQ4 IRQ5 *3 Vector Number 7 16 17 18 19 20 21 22 23 24 Vector Address*1 Advanced Mode H'001C H'0040 H'0044 H'0048 H'004C H'0050 H'0054 H'0058 H'005C H'0060 IPRC6 to IPRC4 IPRC2 to IPRC0 IPRB2 to IPRB0 IPRA6 to IPRA4 IPRA2 to IPRA0 IPRB6 to IPRB4 IPR*2*3 Priority High
Interrupt Source External Pin
Reserved DTC*3 SWDTEND (completion of software initiation data transfer) WOVI0 (interval timer 0) PC break ADI (completion of A/D conversion) WOVI1 (interval timer 1) Reserved TGI0A (TGR0A input capture/compare-match) TGI0B (TGR0B input capture/compare-match) TGI0C (TGR0C input capture/compare-match) TGI0D (TGR0D input capture/compare- match) TCI0V (overflow 0) Reserved
Watchdog timer 0 PC break*3 A/D Watchdog timer 1 TPU channel 0*3
25 27 28 29 30 31 32 33 34 35
H'0064 H'006C H'0070 H'0074 H'0078 H'007C H'0080 H'0084 H'0088 H'008C
IPRD6 to IPRD4 IPRE6 to IPRE4 IPRE2 to IPRE0
IPRF6 to IPRF4
36 37 38 39
H'0090 H'0094 H'0098 H'009C
Low
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Origin of Interrupt Source TGI1A (TGR1A input capture/compare-match) TGI1B (TGR1B input capture/compare-match) TCI1V (overflow 1) TCI1U (underflow 1)*3 TPU channel 2 TGI2A (TGR2A input capture/compare-match) TGI2B (TGR2B input capture/compare-match) TCI2V (overflow 2) TCI2U (underflow 2)*3 8-bit timer channel 0 CMIA0 (compare-match A0) CMIB0 (compare-match B0) OVI0 (overflow 0) 8-bit timer channel 1 Reserved CMIA1 (compare-match A1) CMIB1 (compare-match B1) OVI1 (overflow 1) SCI channel 0 Reserved ERI0 (receive error 0) RXI0 (receive completion 0) TXI0 (transmit data empty 0) TEI0 (transmit end 0) Vector Number 40 41 42 43 44 45 46 47 64 65 66 67 68 69 70 71 80 81 82 83 Vector Address*1 Advanced Mode H'00A0 H'00A4 H'00A8 H'00AC H'00B0 H'00B4 H'00B8 H'00BC H'0100 H'0104 H'0108 H'010C H'0110 H'0114 H'0118 H'011C H'0140 H'0144 H'0148 H'014C Low IPRJ2 to IPRJ0 IPRI2 to IPRI0 IPRI6 to IPRI4 IPRG6 to IPRG4 IPR*2*3 IPRF2 to IPRF0 Priority High
Interrupt Source TPU channel 1
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Origin of Interrupt Source ERI1 (receive error 1) RXI1 (receive completion 1) TXI1 (transmit data empty 1) TEI1 (transmit end 1) 8-bit timer channel 2*3 CMIA2 (compare-match A2) CMIB2 (compare-match B2) OVI2 (overflow 2) 8-bit timer channel 3*3 Reserved CMIA3 (compare-match A3) CMIB3 (compare-match B3) OVI3 (overflow 3) IIC channel 0*4 Reserved Vector Number 84 85 86 87 92 93 94 95 96 97 98 99 Vector Address*1 Advanced Mode H'0150 H'0154 H'0158 H'015C H'0170 H'0174 H'0178 H'017C H'0180 H'0184 H'0188 H'018C H'0190 H'0194 H'0198 H'019C H'01A0 H'01A4 H'01A8 H'01AC H'01B0 IPRM2 to IPRM0 Low IPRM6 to IPRM4 IPRL2 to IPRL0 IPRL6 to IPRL4 IPR*2*3 IPRK6 to IPRK4 Priority High
Interrupt Source SCI channel 1
IICI0 (1-byte transmission/ 100 reception completion) Reserved 101
IIC channel 1
*3
IICI1 (1-byte transmission/ 102 reception completion) Reserved 103 104 105 106 107 108
8-bit reload timer channels 4 to 7*3
OVI4 (overflow 4) OVI5 (overflow 5) OVI6 (overflow 6) OVI7 (overflow 7)
External pins
WKP7 to WKP0
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Section 5 Interrupt Controller
Origin of Interrupt Source ERI2 (receive error 2) RXI2 (receive completion 2) TXI2 (transmit data empty 2) TEI2 (transmit end 2) Vector Number 120 121 122 123 Vector Address*1 Advanced Mode H'01E0 H'01E4 H'01E8 H'01EC Low IPR*2*3 IPRO6 to IPRO4 Priority High
Interrupt Source SCI channel 2
Notes: 1. Lower 16 bits of the start address. 2. IPR6 to IPR4, and IPR2 to IPR0 bits are reserved, because these bits have no corresponding interruption. These bits are always read as 0 and cannot be modified. 3. Supported only by the H8S/2268 Group. 4. Supported as an option by H8S/2264 Group.
5.5
5.5.1
Operation
Interrupt Control Modes and Interrupt Operation
Interrupt operations in the H8S/2268 differ depending on the interrupt control mode. NMI interrupts are accepted at all times except in the reset state and the hardware standby state. In the case of IRQ interrupts, WKP interrupts and on-chip peripheral module interrupts, an enable bit is provided for each interrupt. Clearing an enable bit to 0 disables the corresponding interrupt request. Interrupt sources for which the enable bits are set to 1 are controlled by the interrupt controller. Table 5.3 shows the interrupt control modes. The interrupt controller performs interrupt control according to the interrupt control mode set by the INTM1 and INTM0 bits in SYSCR, the priorities set in IPR*, and the masking state indicated by the I bit in the CPU's CCR, and bits I2 to I0 in EXR*. Note: * Supported only by the H8S/2268 Group.
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Section 5 Interrupt Controller
Table 5.3
Interrupt Control Modes
Interrupt Mask Bits I I2 to I0
SYSCR Interrupt Priority Setting Control Mode INTM1 INTM0 Registers* 0 2* 0 0 1 1 0 IPR
Description Interrupt mask control is performed by the I bit. Setting prohibited 8-level interrupt mask control is performed by bits I2 to I0. 8 priority levels can be set with IPR. Setting prohibited
1
Note: * Supported only by the H8S/2268 Group.
Figures 5.7 and 5.8 show block diagrams of the priority decision circuits for the H8S/2268 Group and H8S/2264 Group, respectively.
Interrupt control mode 0
I
Interrupt acceptance control Interrupt source Default priority determination 8-level mask control Vector number
IPR
I2 to I0
Interrupt control mode 2
Figure 5.7 Block Diagram of Interrupt Control Operation for H8S/2268 Group
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Section 5 Interrupt Controller
Interrupt control mode 0
I
Interrupt source
Interrupt acceptance control
Default priority determination
Vector number
Figure 5.8 Block Diagram of Interrupt Control Operation for H8S/2264 Group Interrupt Acceptance Control: In interrupt control mode 0, interrupt acceptance is controlled by the I bit in CCR. Table 5.4 shows the interrupts selected in each interrupt control mode. Table 5.4 Interrupts Selected in Each Interrupt Control Mode (1)
Interrupt Mask Bits Interrupt Control Mode 0 2* I 0 1 X Legend: X: Don't care Note: * Supported only by the H8S/2268 Group. Selected Interrupts All interrupts NMI interrupts All interrupts
8-Level Control (H8S/2268 Group Only): In interrupt control mode 2, 8-level mask level determination is performed for the selected interrupts in interrupt acceptance control according to the interrupt priority level (IPR). The interrupt source selected is the interrupt with the highest priority level, and whose priority level set in IPR is higher than the mask level. Table 5.5 Interrupts Selected in Each Interrupt Control Mode (2)
Selected Interrupts All interrupts Highest-priority-level (IPR) interrupt whose priority level is greater than the mask level (IPR > I2 to I0).
Interrupt Control Mode 0 2
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Section 5 Interrupt Controller
Default Priority Determination: When an interrupt is selected by 8-level control, its priority is determined and a vector number is generated. If the same value is set for IPR, acceptance of multiple interrupts is enabled, and so only the interrupt source with the highest priority according to the preset default priorities is selected and has a vector number generated (H8S/2268 Group only). Interrupt sources with a lower priority than the accepted interrupt source are held pending. Table 5.6 shows operations and control signal functions in each interrupt control mode. Table 5.6
Interrupt Control Mode 0 3 2*
Operations and Control Signal Functions in Each Interrupt Control Mode
Setting INTM1 INTM0 0 1 0 0 O X Interrupt Acceptance Control I IM 1 * X O 8-Level Control* I2 to I0* IM
3 3
Default Priority Determination
3
T (Trace) T
IPR* 2 * PR
O O
Legend: O: Interrupt operation control performed X: No operation. (All interrupts enabled) IM: Used as interrupt mask bit PR: Sets priority. : Not used. Notes: 1. Set to 1 when interrupt is accepted. 2. Keep the initial setting. 3. Supported only by the H8S/2268 Group.
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Section 5 Interrupt Controller
5.5.2
Interrupt Control Mode 0
Enabling and disabling of IRQ interrupts, WKP interrupts and on-chip peripheral module interrupts can be set by means of the I bit in the CPU's CCR. Interrupts are enabled when the I bit is cleared to 0, and disabled when set to 1. Figure 5.9 shows a flowchart of the interrupt acceptance operation in this case. 1. If an interrupt source occurs when the corresponding interrupt enable bit is set to 1, an interrupt request is sent to the interrupt controller. 2. If the I bit is set to 1, only an NMI interrupt is accepted, and other interrupt requests are held pending. If the I bit is cleared, an interrupt request is accepted. 3. Interrupt requests are sent to the interrupt controller, the highest-ranked interrupt according to the priority system is accepted, and other interrupt requests are held pending. 4. When the CPU accepts an interrupt request, it starts interrupt exception handling after execution of the current instruction has been completed. 5. The PC and CCR are saved to the stack area by interrupt exception handling. The PC saved on the stack shows the address of the first instruction to be executed after returning from the interrupt handling routine. 6. Next, the I bit in CCR is set to 1. This masks all interrupts except NMI. 7. The CPU generates a vector address for the accepted interrupt and starts execution of the interrupt handling routine at the address indicated by the contents of the vector address in the vector table.
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Section 5 Interrupt Controller
Program execution status
Interrupt generated Yes Yes NMI No
No
No I=0 Yes
Hold pending
IRQ0 Yes
No
No IRQ1 Yes TEI2 Yes
Save PC and CCR
I=1
Read vector address
Branch to interrupt handling routine
Figure 5.9 Flowchart of Procedure Up to Interrupt Acceptance in Interrupt Control Mode 0
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Section 5 Interrupt Controller
5.5.3
Interrupt Control Mode 2 (H8S/2268 Group Only)
Eight-level masking is implemented for IRQ interrupts, WKP interrupts and on-chip peripheral module interrupts by comparing the interrupt mask level set by bits I2 to I0 of EXR in the CPU with IPR. Figure 5.10 shows a flowchart of the interrupt acceptance operation in this case. 1. If an interrupt source occurs when the corresponding interrupt enable bit is set to 1, an interrupt request is sent to the interrupt controller. 2. When interrupt requests are sent to the interrupt controller, the interrupt with the highest priority according to the interrupt priority levels set in IPR is selected, and lower-priority interrupt requests are held pending. If a number of interrupt requests with the same priority are generated at the same time, the interrupt request with the highest priority according to the priority system shown in table 5.2 is selected. 3. Next, the priority of the selected interrupt request is compared with the interrupt mask level set in EXR. An interrupt request with a priority no higher than the mask level set at that time is held pending, and only an interrupt request with a priority higher than the interrupt mask level is accepted. 4. When the CPU accepts an interrupt request, it starts interrupt exception handling after execution of the current instruction has been completed. 5. The PC, CCR, and EXR are saved to the stack area by interrupt exception handling. The PC saved on the stack shows the address of the first instruction to be executed after returning from the interrupt handling routine. 6. The T bit in EXR is cleared to 0. The interrupt mask level is rewritten with the priority level of the accepted interrupt. If the accepted interrupt is NMI, the interrupt mask level is set to H'7. 7. The CPU generates a vector address for the accepted interrupt and starts execution of the interrupt handling routine at the address indicated by the contents of the vector address in the vector table.
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Section 5 Interrupt Controller
Program execution status
Interrupt generated? Yes Yes NMI No No
No
Level 7 interrupt? Yes Mask level 6 or below? Yes
Level 6 interrupt? No Yes
No
Level 1 interrupt? Mask level 5 or below? Yes Mask level 0? Yes No Yes
No
No
Save PC, CCR, and EXR
Hold pending
Clear T bit to 0
Update mask level
Read vector address
Branch to interrupt handling routine
Figure 5.10 Flowchart of Procedure Up to Interrupt Acceptance in Control Mode 2 5.5.4 Interrupt Exception Handling Sequence
Figure 5.11 shows the interrupt exception handling sequence. The example shown is for the case where interrupt control mode 0 is set in advanced mode, and the program area and stack area are in on-chip memory.
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Interrupt acceptance Internal operation stack Vector fetch Internal operation
Interrupt level determination Instruction Wait for end of instruction prefetch
Interrupt service routine instruction prefetch
Section 5 Interrupt Controller
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(1) (3) (5) (7) (9) (11) (13) (2) (4) (6) (8) (10) (12) (14) (6) (8) (9) (11) (10) (12) (13) (14) Saved PC and saved CCR Vector address Interrupt handling routine start address (Vector address contents) Interrupt handling routine start address ((13) = (10)(12)) First instruction of interrupt handling routine
Interrupt request signal
Internal address bus
Internal read signal
Internal write signal
Figure 5.11 Interrupt Exception Handling
Internal data bus
(1)
Instruction prefetch address (Not executed. This is the contents of the saved PC, the return address.) (2) (4) Instruction code (Not executed.) (3) Instruction prefetch address (Not executed.) (5) SP-2 (7) SP-4
Section 5 Interrupt Controller
5.5.5
Interrupt Response Times
This LSI is capable of fast word transfer to on-chip memory, has the program area in on-chip ROM and the stack area in on-chip RAM, enabling high-speed processing. Table 5.7 shows interrupt response times - the interval between generation of an interrupt request and execution of the first instruction in the interrupt handling routine. The execution status symbols used in table 5.7 are explained in table 5.8. Table 5.7 Interrupt Response Times (States)
Normal Mode* No. Execution Status 1 2 3 4 5 6 Interrupt priority determination *1 Number of wait states until executing 2 instruction ends* PC, CCR, EXR stack save Vector fetch
3 Instruction fetch* 5
Advanced Mode INTM1 = 0 3 1 to 19 + 2*SI 2*SK 2*SI 2*SI 2 12 to 32 INTM1 = 1 3 1 to 19 + 2*SI 3*SK 2*SI 2*SI 2 13 to 33
INTM1 = 0 3 1 to 19 + 2*SI 2*SK SI 2*SI
4
INTM1 = 1 3 1 to 19 + 2*SI 3*SK SI 2*SI 2 12 to 32
Internal processing*
2 11 to 31
Total (using on-chip memory) Notes: 1. 2. 3. 4. 5.
Two states in case of internal interrupt. Refers to MULXS and DIVXS instructions. Prefetch after interrupt acceptance and interrupt handling routine prefetch. Internal processing after interrupt acceptance and internal processing after vector fetch. Not available in this LSI.
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Table 5.8
Number of States in Interrupt Handling Routine Execution Status
Object of Access External Device* 8 Bit Bus Symbol Internal Memory SI SJ SK 1 2-State Access 4 3-State Access 6+2m 16 Bit Bus 2-State Access 2 3-State Access 3+m
Instruction fetch Branch address read Stack manipulation
Legend: m: Number of wait states in an external device access. Note: * Cannot be used in this LSI.
5.5.6
DTC Activation by Interrupt (H8S/2268 Group Only)
The DTC can be activated by an interrupt. In this case, the following selections can be made. 1. Interrupt request to CPU 2. Activation request to DTC 3. Multiple selection of 1 and 2 above. For details on interrupt request, which enables DTC activation, see section 8, Data Transfer Controller (DTC). Figure 5.12 shows a block diagram of DTC and interrupt controller.
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Section 5 Interrupt Controller
Interrupt request IRQ interrupt
Selection circuit Selection signal Clear signal DTCER
DTC activation request vector number
Control logic Clear signal
DTC
On-chip peripheral module
Interrupt source clear signal
DTVECR
SWDTE clear signal Priority determination Interrupt controller CPU interrupt request vector number CPU I, I2 to I0
Figure 5.12 DTC and Interrupt Controller Interrupt controller of DTC control has the following three main functions. Interrupt source selection: For interruption source, select DTC activation request or CPU interruption request by the DTCE bits in DTCERA to DTCERF, and DTCERI of the DTC. After DTC data transfer, the DTCE bit is cleared to 0, and an interrupt request to the CPU can be made by the setting of the DISEL bit in MRB of the DTC. When DTC performs data transfer for prescribed number of times and transfer counter becomes 0, the DTCE bit should be cleared to 0 and an interrupt request to the CPU is made after DTC data transfer. Priority determination: DTC activation source is selected according to priority of default setting. Mask level and priority level do not affect the selection. For details, see section 8.4, Location of Register Information and DTC Vector Table. Operation order: When the same interrupts are selected as DTC activation source and CPU interruption source, DTC data is transferred, and then CPU interrupt exception processing is made. Table 5.9 shows interrupt source selection and interrupt source clear control by the setting of the DTCE bit in DTCERA to DTCERF, and DTCERI of the DTC and the setting of the DISEL bit in MRB of the DTC.
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Section 5 Interrupt Controller
Table 5.9
Settings DTC DTCE 0 1
Interrupt Source Selection and Clear Control
Interrupt Source Selection and Clear Control DESEL * 0 1 DTC X # O CPU # X #
Legend: #: Corresponding interrupt is used. Interrupt source is cleared. (The CPU should clear the source flag in the interrupt processing routine.) O: Corresponding interrupt is used. Interrupt source is not cleared. X: Corresponding interrupt cannot be used. *: Don't care
Usage note: Interrupt sources of the SCI and A/D converter are cleared when the DTC reads or writes prescribed register, and they do not depend on the DTCE or DISEL bit.
5.6
5.6.1
Usage Notes
Contention between Interrupt Generation and Disabling
When an interrupt enable bit is cleared to 0 to disable interrupt requests, the disabling becomes effective after execution of the instruction. When an interrupt enable bit is cleared to 0 by an instruction such as BCLR or MOV, and if an interrupt is generated during execution of the instruction, the interrupt concerned will still be enabled on completion of the instruction, and so interrupt exception handling for that interrupt will be executed on completion of the instruction. However, if there is an interrupt request of higher priority than that interrupt, interrupt exception handling will be executed for the higher-priority interrupt, and the lower-priority interrupt will be ignored. The same also applies when an interrupt source flag is cleared to 0. Figure 5.13 shows an example in which the CMIEA bit in the TCR register of the 8-bit timer is cleared to 0. The above contention will not occur if an enable bit or interrupt source flag is cleared to 0 while the interrupt is masked.
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Section 5 Interrupt Controller
TCR write cycle by CPU
CMIA exception handling
Internal address bus
TCR address
Internal write signal
CMIEA
CMFA
CMIA interrupt signal
Figure 5.13 Contention between Interrupt Generation and Disabling 5.6.2 Instructions that Disable Interrupts
The instructions that disable interrupts are LDC, ANDC, ORC, and XORC. After any of these instructions are executed, all interrupts including NMI are disabled and the next instruction is always executed. When the I bit is set by one of these instructions, the new value becomes valid two states after execution of the instruction ends. 5.6.3 When Interrupts Are Disabled
There are times when interrupt acceptance is disabled by the interrupt controller. The interrupt controller disables interrupt acceptance for a 3-state period after the CPU has updated the mask level with an LDC, ANDC, ORC, or XORC instruction.
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Section 5 Interrupt Controller
5.6.4
Interrupts during Execution of EEPMOV Instruction
Interrupt operation differs between the EEPMOV.B instruction and the EEPMOV.W instruction. With the EEPMOV.B instruction, an interrupt request (including NMI) issued during the transfer is not accepted until the move is completed. With the EEPMOV.W instruction, if an interrupt request is issued during the transfer, interrupt exception handling starts at a break in the transfer cycle. The PC value saved on the stack in this case is the address of the next instruction. Therefore, if an interrupt is generated during execution of an EEPMOV.W instruction, the following coding should be used.
L1: EEPMOV.W MOV.W BNE R4,R4 L1
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Section 6 PC Break Controller (PBC)
Section 6 PC Break Controller (PBC)
The H8S/2268 Group includes a PC break controller (PBC), while the H8S/2264 Group does not. The PC break controller (PBC) provides functions that simplify program debugging. Using these functions, it is easy to create a self-monitoring debugger, enabling programs to be debugged with the chip alone, without using an in-circuit emulator. A block diagram of the PC break controller is shown in figure 6.1.
6.1
Features
* Two break channels (A and B) * 24-bit break address Bit masking possible * Four types of break compare conditions Instruction fetch Data read Data write Data read/write * Bus master Either CPU or CPU/DTC can be selected * The timing of PC break exception handling after the occurrence of a break condition is as follows: Immediately before execution of the instruction fetched at the set address (instruction fetch) Immediately after execution of the instruction that accesses data at the set address (data access) * Module stop mode can be set
PBC0000B_000020020700
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Section 6 PC Break Controller (PBC)
BARA
BCRA
Output control
Mask control
Comparator
Match signal
Internal address
Control logic
Access status
PC break interrupt
Comparator
Match signal
Control logic
Output control
Mask control
BARB
BCRB
Figure 6.1 Block Diagram of PC Break Controller
6.2
Register Descriptions
The PC break controller has the following registers. * Break address register A (BARA) * Break address register B (BARB) * Break control register A (BCRA) * Break control register B (BCRB) 6.2.1 Break Address Register A (BARA)
BARA is a 32-bit readable/writable register that specifies the channel A break address.
Bit 31 to 24 Bit Name Initial Value R/W Description Reserved These bits are read as an undefined value and cannot be modified. 23 to 0 BAA23 to BAA0 H'000000 R/W These bits set the channel A PC break address.
Undefined
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Section 6 PC Break Controller (PBC)
6.2.2
Break Address Register B (BARB)
BARB is the channel B break address register. The bit configuration is the same as for BARA. 6.2.3 Break Control Register A (BCRA)
BCRA controls channel A PC breaks.
Bit 7 Bit Name CMFA Initial Value 0 R/W Description [Setting condition] When a condition set for channel A is satisfied [Clearing condition] When 0 is written to CMFA after reading* CMFA = 1
2
1 R/(W)* Condition Match Flag A
6
CDA
0
R/W
CPU Cycle/DTC Cycle Select A Selects the channel A break condition bus master. 0: CPU 1: CPU or DTC
5 4 3
BAMRA2 BAMRA1 BAMRA0
0 0 0
R/W R/W R/W
Break Address Mask Register A2 to A0 These bits specify which bits of the break address set in BARA are to be masked. 000: BAA23 - 0 (All bits are unmasked) 001: BAA23 - 1 (Lowest bit is masked) 010: BAA23 - 2 (Lower 2 bits are masked) 011: BAA23 - 3 (Lower 3 bits are masked) 100: BAA23 - 4 (Lower 4 bits are masked) 101: BAA23 - 8 (Lower 8 bits are masked) 110: BAA23 - 12 (Lower 12 bits are masked) 111: BAA23 - 16 (Lower 16 bits are masked)
2 1
CSELA1 CSELA0
0 0
R/W R/W
Break Condition Select Selects break condition of channel A. 00: Instruction fetch is used as break condition 01: Data read cycle is used as break condition 10: Data write cycle is used as break condition 11: Data read/write cycle is used as break condition
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Section 6 PC Break Controller (PBC) Initial Value 0
Bit 0
Bit Name BIEA
R/W R/W
Description Break Interrupt Enable When this bit is 1, the PC break interrupt request of channel A is enabled.
Notes: 1. Only a 0 can be written to this bit to clear the flag. 2. Read the state wherein CMFA = 1 twice or more, when the CMFA is polled after inhibiting the PC break interruption.
6.2.4
Break Control Register B (BCRB)
BCRB is the channel B break control register. The bit configuration is the same as for BCRA.
6.3
Operation
The operation flow from break condition setting to PC break interrupt exception handling is shown in section 6.3.1, PC Break Interrupt Due to Instruction Fetch, and 6.3.2, PC Break Interrupt Due to Data Access, taking the example of channel A. 6.3.1 PC Break Interrupt Due to Instruction Fetch
1. Set the break address in BARA. For a PC break caused by an instruction fetch, set the address of the first instruction byte as the break address. 2. Set the break conditions in BCR. Set bit 6 (CDA) to 0 to select the CPU because the bus master must be the CPU for a PC break caused by an instruction fetch. Set the address bits to be masked to bits 3 to 5 (BAMA2 to 0). Set bits 1 and 2 (CSELA1 to 0) to 00 to specify an instruction fetch as the break condition. Set bit 0 (BIEA) to 1 to enable break interrupts. 3. When the instruction at the set address is fetched, a PC break request is generated immediately before execution of the fetched instruction, and the condition match flag (CMFA) is set. 4. After priority determination by the interrupt controller, PC break interrupt exception handling is started.
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Section 6 PC Break Controller (PBC)
6.3.2
PC Break Interrupt Due to Data Access
1. Set the break address in BARA. For a PC break caused by a data access, set the target ROM, RAM, I/O, or external address space address as the break address. Stack operations and branch address reads are included in data accesses. 2. Set the break conditions in BCRA. Select the bus master with bit 6 (CDA). Set the address bits to be masked to bits 3 to 5 (BAMA2 to 0). Set bits 1 and 2 (CSELA1 to 0) to 01, 10, or 11 to specify data access as the break condition. Set bit 0 (BIEA) to 1 to enable break interrupts. 3. After execution of the instruction that performs a data access on the set address, a PC break request is generated and the condition match flag (CMFA) is set. 4. After priority determination by the interrupt controller, PC break interrupt exception handling is started. 6.3.3 Notes on PC Break Interrupt Handling
* When a PC break interrupt is generated at the transfer address of an EEPMOV.B instruction PC break exception handling is executed after all data transfers have been completed and the EEPMOV.B instruction has ended. * When a PC break interrupt is generated at a DTC transfer address PC break exception handling is executed after the DTC has completed the specified number of data transfers, or after data for which the DISEL bit is set to 1 has been transferred. 6.3.4 Operation in Transitions to Power-Down Modes
The operation when a PC break interrupt is set for an instruction fetch at the address after a SLEEP instruction is shown below. * When the SLEEP instruction causes a transition from high-speed (medium-speed) mode to sleep mode: After execution of the SLEEP instruction, a transition is not made to sleep mode, and PC break interrupt handling is executed. After execution of PC break interrupt handling, the instruction at the address after the SLEEP instruction is executed (figure 6.2 (A)). * When the SLEEP instruction causes a transition from high speed (medium speed) mode to subactive mode (figure 6.2 (B)). * When the SLEEP instruction causes a transition from subactive mode to high speed (medium speed) mode (figure 6.2 (C)). * When the SLEEP instruction causes a transition to software standby mode or watch mode:
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Section 6 PC Break Controller (PBC)
After execution of the SLEEP instruction, a transition is made to the respective mode, and PC break interrupt handling is not executed. However, the CMFA or CMFB flag is set (figure 6.2 (D)).
SLEEP instruction execution SLEEP instruction execution SLEEP instruction execution SLEEP instruction execution
PC break exception handling
System clock subclock
Subclock system clock, oscillation settling time
Transition to respective mode (D)
Execution of instruction after sleep instruction (A)
Direct transition exception handling Subactive mode
Direct transition exception handling High-speed (medium-speed) mode
PC break exception handling
PC break exception handling
Execution of instruction after sleep instruction (B)
Execution of instruction after sleep instruction (C)
Figure 6.2 Operation in Power-Down Mode Transitions 6.3.5 When Instruction Execution Is Delayed by One State
While the break interrupt enable bit is set to 1, instruction execution is one state later than usual. * For 1-word branch instructions (Bcc d:8, BSR, JSR, JMP, TRAPA, RTE, and RTS) in on-chip ROM or RAM. * When break interruption by instruction fetch is set, the set address indicates on-chip ROM or RAM space, and that address is used for data access, the instruction that executes the data access is one state later than in normal operation. * When break interruption by instruction fetch is set and a break interrupt is generated, if the executing instruction immediately preceding the set instruction has one of the addressing modes shown below, and that address indicates on-chip ROM or RAM, the instruction will be one state later than in normal operation. Addressing modes: @ERn, @(d:16,ERn), @(d:32,ERn), @-ERn/ERn+, @aa:8, @aa:24, @aa:32, @(d:8,PC), @(d:16,PC), @@aa:8 * When break interruption by instruction fetch is set and a break interrupt is generated, if the executing instruction immediately preceding the set instruction is NOP or SLEEP, or has #xx, Rn as its addressing mode, and that instruction is located in on-chip ROM or RAM, the instruction will be one state later than in normal operation.
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Section 6 PC Break Controller (PBC)
6.4
6.4.1
Usage Notes
Module Stop Mode Setting
PBC operation can be disabled or enabled using the module stop control register. The initial setting is for PBC operation to be halted. Register access is enabled by clearing module stop mode. For details, refer to section 22, Power-Down Modes. 6.4.2 PC Break Interrupts
The PC break interrupt is shared by channels A and B. The channel from which the request was issued must be determined by the interrupt handler. 6.4.3 CMFA and CMFB
The CMFA and CMFB flags are not automatically cleared to 0, so 0 must be written to CMFA or CMFB after first reading the flag while it is set to 1. If the flag is left set to 1, another interrupt will be requested after interrupt handling ends. 6.4.4 PC Break Interrupt when DTC Is Bus Master
A PC break interrupt generated when the DTC is the bus master is accepted after the bus has been transferred to the CPU by the bus controller. 6.4.5 PC Break Set for Instruction Fetch at Address Following BSR, JSR, JMP, TRAPA, RTE, or RTS Instruction When a PC break is set for an instruction fetch at an address following a BSR, JSR, JMP, TRAPA, RTE, or RTS instruction: Even if the instruction at the address following a BSR, JSR, JMP, TRAPA, RTE, or RTS instruction is fetched, it is not executed, and so a PC break interrupt is not generated by the instruction fetch at the next address.
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Section 6 PC Break Controller (PBC)
6.4.6
I Bit Set by LDC, ANDC, ORC, or XORC Instruction
When the I bit is set by an LDC, ANDC, ORC, or XORC instruction, a PC break interrupt becomes valid two states after the end of the executing instruction. If a PC break interrupt is set for the instruction following one of these instructions, since interrupts, including NMI, are disabled for a 3-state period in the case of LDC, ANDC, ORC, and XOR, the next instruction is always executed. For details, see section 5, Interrupt Controller. 6.4.7 PC Break Set for Instruction Fetch at Address Following Bcc Instruction
When a PC break is set for an instruction fetch at an address following a Bcc instruction: A PC break interrupt is generated if the instruction at the next address is executed in accordance with the branch condition, and is not generated if the instruction at the next address is not executed. 6.4.8 PC Break Set for Instruction Fetch at Branch Destination Address of Bcc Instruction When a PC break is set for an instruction fetch at the branch destination address of a Bcc instruction: A PC break interrupt is generated if the instruction at the branch destination is executed in accordance with the branch condition, and is not generated if the instruction at the branch destination is not executed.
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Section 7 Bus Controller
Section 7 Bus Controller
The H8S/2000 CPU is driven by a system clock, denoted by the symbol . The bus controller controls a memory cycle and a bus cycle. Different methods are used to access on-chip memory and on-chip peripheral modules. In the H8S/2268 Group, the bus controller also has a bus arbitration function, and controls the operation of the internal bus masters: the CPU and data transfer controller (DTC).
7.1
Basic Timing
The period from one rising edge of to the next is referred to as a "state". The memory cycle or bus cycle consists of one, two, or four states. Different methods are used to access on-chip memory, on-chip peripheral modules, and the external address space. 7.1.1 On-Chip Memory Access Timing (ROM, RAM)
On-chip memory is accessed in one state. The data bus is 16 bits wide, permitting both byte and word transfer instruction. Figure 7.1 shows the on-chip memory access cycle.
Bus cycle T1 Internal address bus Address
Read access
Internal read signal Internal data bus Read data
Write access
Internal write signal Internal data bus Write data
Figure 7.1 On-Chip Memory Access Cycle
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Section 7 Bus Controller
7.1.2
On-Chip Peripheral Module Access Timing (H'FFFDAC to H'FFFFBF)
Addresses H'FFFDAC to H'FFFFBF in the on-chip peripheral modules are accessed in two states. The data bus is either 8 bits or 16 bits wide, depending on the particular internal I/O register being accessed. For details, refer to section 24, List of Registers. Figure 7.2 shows access timing for the on-chip peripheral modules (H'FFFDAC to H'FFFFBF).
Bus cycle T1 Internal address bus Address T2
Read access
Internal read signal Internal data bus Read data
Write access
Internal write signal Internal data bus Write data
Figure 7.2 On-Chip Peripheral Module Access Cycle (H'FFFDAC to H'FFFFBF) 7.1.3 On-Chip Peripheral Module Access Timing (H'FFFC30 to H'FFFCA3)
Addresses H'FFFC30 to H'FFFCA3 on the on-chip peripheral modules and registers are accessed in four states. The data bus is either 8 bits or 16 bits wide, depending on the particular internal I/O register being accessed. For details, refer to section 24, List of Registers. Figure 7.3 shows access timing for the on-chip peripheral modules (H'FFFC30 to H'FFFCA3). The on-chip module of which address is between H'FFFC30 to H'FFFCA3 includes LCD, DTMF*, TMR4*, ports H to L and ports M* and N*. The registers are WKP register and module stop control register D. Note: * Supported only by the H8S/2268 Group.
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Section 7 Bus Controller
Bus cycle T1 Internal address bus Internal read signal Read access Internal data bus Internal write signal Write access Internal data bus Write data Read data Address T2 T3 T4
Figure 7.3 On-Chip Peripheral Module Access Cycle (H'FFFC30 to H'FFFCA3)
7.2
Bus Arbitration (H8S/2268 Group Only)
The Bus Controller has a bus arbiter that arbitrates bus master operations. There are two bus masters, the CPU and DTC, which perform read/write operations when they control the bus. 7.2.1 Order of Priority of the Bus Masters
Each bus master requests the bus by means of a bus request signal. The bus arbiter detects the bus masters' bus request signals, and if the bus is requested, sends a bus request acknowledge signal to the bus master making the request. If there are bus requests from more than one bus master, the bus request acknowledge signal is sent to the one with the highest priority. When a bus master receives the bus request acknowledge signal, it takes possession of the bus until that signal is canceled. The order of priority of the bus masters is as follows: (High) DTC > CPU (Low)
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Section 7 Bus Controller
7.2.2
Bus Transfer Timing
Even if a bus request is received from a bus master with a higher priority than that of the bus master that has acquired the bus and is currently operating, the bus is not necessarily transferred immediately. The CPU is the lowest-priority bus master, and if a bus request is received from the DTC, the bus arbiter transfers the bus to the bus master that issued the request. The timing for transfer of the bus is as follows: * The bus is transferred at a break between bus cycles. However, if a bus cycle is executed in discrete operations, as in the case of a longword-size access, the bus is not transferred between such operations. For details, refer to section 2.7, Bus States During Instruction Execution, in the H8S/2600 Series, H8S/2000 Series Programming Manual. * If the CPU is in sleep mode, it transfers the bus immediately. The DTC sends the bus arbiter a request for the bus when an activation request is generated. 7.2.3 Resets and the Bus Controller
In a reset, the H8S/2268, including the bus controller, enters the reset state at that point, and an executing bus cycle is discontinued.
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Section 8 Data Transfer Controller (DTC)
Section 8 Data Transfer Controller (DTC)
The H8S/2268 Group includes a data transfer controller (DTC), while the H8S/2264 Group does not. The DTC can be activated by an interrupt or software, to transfer data. Figure 8.1 shows a block diagram of the DTC. The DTC's register information is stored in the on-chip RAM. When the DTC is used, the RAME bit in SYSCR must be set to 1. A 32-bit bus connects the DTC to the on-chip RAM (1 kbyte), enabling 32-bit/1-state reading and writing of the DTC register information.
8.1
Features
* Transfer is possible over any number of channels * Three transfer modes Normal, repeat, and block transfer modes are available * One activation source can trigger a number of data transfers (chain transfer) * The direct specification of 16-Mbyte address space is possible * Activation by software is possible * Transfer can be set in byte or word units * A CPU interrupt can be requested for the interrupt that activated the DTC * Module stop mode can be set
DTCH808B_000020020700
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Section 8 Data Transfer Controller (DTC)
Internal address bus On-chip RAM
Interrupt controller
DTC
DTCERA to DTCERF and DTCERI
Control logic
Interrupt request
CPU interrupt request Legend: MRA, MRB: CRA, CRB: SAR: DAR: DTCERA to DTCERF and DTCERI: DTVECR:
DTC service request
DTC mode registers A and B DTC transfer count registers A and B DTC source address register DTC destination address register DTC enable registers A to F and I DTC vector register
Figure 8.1 Block Diagram of DTC
8.2
Register Descriptions
The DTC has the following registers. * DTC mode register A (MRA) * DTC mode register B (MRB) * DTC source address register (SAR) * DTC destination address register (DAR) * DTC transfer count register A (CRA) * DTC transfer count register B (CRB) These six registers cannot be directly accessed from the CPU.
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MRA MRB CRA CRB DAR SAR
Internal data bus
Register information
DTVECR
Section 8 Data Transfer Controller (DTC)
When activated, the DTC reads a set of register information that is stored in on-chip RAM to the corresponding DTC registers and transfers data. After the data transfer, it writes a set of updated register information back to the RAM. * DTC enable registers (DTCER) * DTC vector register (DTVECR) 8.2.1 DTC Mode Register A (MRA)
MRA selects the DTC operating mode.
Bit 7 6 Bit Name SM1 SM0 Initial Value R/W Description Source Address Mode 1 and 0 These bits specify an SAR operation after a data transfer. 0X: SAR is fixed 10: SAR is incremented after a transfer (by +1 when Sz = 0; by +2 when Sz = 1) 11: SAR is decremented after a transfer (by -1 when Sz = 0; by -2 when Sz = 1) 5 4 DM1 DM0 Undefined Undefined Destination Address Mode 1 and 0 These bits specify a DAR operation after a data transfer. 0X: DAR is fixed 10: DAR is incremented after a transfer (by +1 when Sz = 0; by +2 when Sz = 1) 11: DAR is decremented after a transfer (by -1 when Sz = 0; by -2 when Sz = 1) 3 2 MD1 MD0 Undefined Undefined DTC Mode 1 and 0 These bits specify the DTC transfer mode. 00: Normal mode 01: Repeat mode 10: Block transfer mode 11: Setting prohibited
Undefined Undefined
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Section 8 Data Transfer Controller (DTC) Initial Value
Bit 1
Bit Name DTS
R/W
Description DTC Transfer Mode Select Specifies whether the source side or the destination side is set to be a repeat area or block area, in repeat mode or block transfer mode. 0: Destination side is repeat area or block area 1: Source side is repeat area or block area
Undefined
0
Sz
Undefined
DTC Data Transfer Size Specifies the size of data to be transferred. 0: Byte-size transfer 1: Word-size transfer
Legend: X: Don't care
8.2.2
DTC Mode Register B (MRB)
MRB is an 8-bit register that selects the DTC operating mode.
Bit 7 Bit Name CHNE Initial Value R/W Description DTC Chain Transfer Enable This bit specifies a chain transfer. For details, refer to 8.5.4, Chain Transfer. In data transfer with CHNE set to 1, determination of the end of the specified number of transfers, clearing of the interrupt source flag, and clearing of DTCER, are not performed. 0: DTC data transfer completed (waiting for start) 1: DTC data transfer (reads new register information and transfers data) 6 DISEL Undefined DTC Interrupt Select This bit specifies whether CPU interrupt is disabled or enabled after a data transfer. 0: Interrupt request is issued to the CPU when the specified data transfer is completed. 1: DTC issues interrupt request to the CPU in every data transfer (DTC does not clear the interrupt request flag that is a cause of the activation). Rev. 4.00 Mar 21, 2006 page 118 of 654 REJ09B0071-0400
Undefined
Section 8 Data Transfer Controller (DTC) Initial Value
Bit 5 to 0
Bit Name
R/W
Description Reserved These bits have no effect on DTC operation. The write value should always be 0.
Undefined
8.2.3
DTC Source Address Register (SAR)
SAR is a 24-bit register that designates the source address of data to be transferred by the DTC. For word-size transfer, specify an even source address. 8.2.4 DTC Destination Address Register (DAR)
DAR is a 24-bit register that designates the destination address of data to be transferred by the DTC. For word-size transfer, specify an even destination address. 8.2.5 DTC Transfer Count Register A (CRA)
CRA is a 16-bit register that designates the number of times data is to be transferred by the DTC. In normal mode, the entire CRA functions as a 16-bit transfer counter (1 to 65536). It is decremented by 1 every time data is transferred, and transfer ends when the count reaches H'0000. In repeat mode or block transfer mode, the CRA is divided into two parts; the upper 8 bits (CRAH) and the lower 8 bits (CRAL). CRAH holds the number of transfers while CRAL functions as an 8-bit transfer counter (1 to 256). CRAL is decremented by 1 every time data is transferred, and the contents of CRAH are sent when the count reaches H'00. 8.2.6 DTC Transfer Count Register B (CRB)
CRB is a 16-bit register that designates the number of times data is to be transferred by the DTC in block transfer mode. It functions as a 16-bit transfer counter (1 to 65536) that is decremented by 1 every time data is transferred, and transfer ends when the count reaches H'0000.
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Section 8 Data Transfer Controller (DTC)
8.2.7
DTC Enable Register (DTCER)
DTCER is comprised of seven registers; DTCERA to DTCERF and DTCERI, and is a register that specifies DTC activation interrupt sources. The correspondence between interrupt sources and DTCE bits is shown in table 8.1. For DTCE bit setting, use bit manipulation instructions such as BSET and BCLR for reading and writing. If all interrupts are masked, multiple activation sources can be set at one time (only at the initial setting) by writing data after executing a dummy read on the relevant register.
Bit 7 6 5 4 3 2 1 0 Bit Name DTCE7 DTCE6 DTCE5 DTCE4 DTCE3 DTCE2 DTCE1 DTCE0 Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description DTC Activation Enable Setting this bit to 1 specifies a relevant interrupt source as a DTC activation source. [Clearing conditions] * * * When the DISEL bit is 1 and the data transfer has ended When the specified number of transfers have ended These bits are not cleared when the DISEL bit is 0 and the specified number of transfers have not been completed
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Section 8 Data Transfer Controller (DTC)
8.2.8
DTC Vector Register (DTVECR)
DTVECR is an 8-bit readable/writable register that enables or disables DTC activation by software, and sets a vector number for the software activation interrupt.
Bit 7 Bit Name SWDTE Initial Value 0 R/W R/W Description DTC Software Activation Enable Setting this bit to 1 activates DTC. Only a 1 can be written to this bit. [Clearing conditions] * * When the DISEL bit is 0 and the specified number of transfers have not ended When 0 s written to the DISEL bit after a softwareactivated data transfer end interrupt (SWDTEND) request has been sent to the CPU. When the DISEL bit is 1 and data transfer has ended, the specified number of transfers have ended, or software-activated data transfer is in process, this bit will not be cleared.
*
6 5 4 3 2 1 0
DTVEC6 DTVEC5 DTVEC4 DTVEC3 DTVEC2 DTVEC1 DTVEC0
0 0 0 0 0 0 0
R/W R/W R/W R/W R/W R/W R/W
DTC Software Activation Vectors 0 to 6 These bits specify a vector number for DTC software activation. The vector address is expressed as H'0400 + (vector number x 2). For example, when DTVEC6 to DTVEC0 = H'10, the vector address is H'0420. These bits are writable when SWDTE=0.
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Section 8 Data Transfer Controller (DTC)
8.3
Activation Sources
The DTC operates when activated by an interrupt or by a write to DTVECR by software. An interrupt request can be directed to the CPU or DTC, as designated by the corresponding DTCER bit. At the end of a data transfer (or the last consecutive transfer in the case of chain transfer), the activation source or corresponding DTCER bit is cleared. Table 8.1 shows the relationship between the activation source and DTCER clearing. The activation source flag, in the case of RXI0, for example, is the RDRF flag in SCI_0. Since there are a number of DTC activation sources, transferring the last byte (or word) does not clear the flag of its activation source. Take appropriate steps at each interrupt processing. When an interrupt has been designated a DTC activation source, the existing CPU mask level and interrupt controller priorities have no effect. If there is more than one activation source at the same time, the DTC operates in accordance with the default priorities. Table 8.1 Activation Source and DTCER Clearing
The DISEL Bit Is 0, and Transfer Counts Specified have not Ended * The SWDTE bit is cleared to 0 The DISEL Bit Is 1, or Transfer Counts Specified have Ended * * Interrupt activation * * The corresponding DTCER bit retains 1 The activation source flag is cleared to 0 * * * The SWDTE bit retains 1 The interrupt request is sent to the CPU The corresponding DTCER bit is cleared to 0 The activation source flag retains 1 The interrupt request which becomes an activation source is sent to the CPU
Activation Source Software activation
Figure 8.2 shows a block diagram of activation source control. For details, see section 5, Interrupt Controller.
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Section 8 Data Transfer Controller (DTC)
Source flag cleared Clear controller Clear DTCER Select Clear request
IRQ interrupt
Interrupt request
Selection circuit
On-chip peripheral module
DTC
DTVECR
Interrupt controller Interrupt mask
CPU
Figure 8.2 Block Diagram of DTC Activation Source Control
8.4
Location of Register Information and DTC Vector Table
Locate the register information in the on-chip RAM (addresses: H'FFEBC0 to H'FFEFBF). Register information should be located at an address that is a multiple of four within the range. Locating the register information in address space is shown in figure 8.3. Locate the MRA, SAR, MRB, DAR, CRA, and CRB registers, in that order, from the start address of the register information. In the case of chain transfer, register information should be located in consecutive areas as shown in figure 8.3, and the register information start address should be located at the vector address corresponding to the interrupt source. Figure 8.4 shows the correspondence between DTC vector address and register information. The DTC reads the start address of the register information from the vector address set for each activation source, and then reads the register information from that start address. When the DTC is activated by software, the vector address is obtained from: H'0400 + (DTVECR[6:0] x 2). For example, if DTVECR is H'10, the vector address is H'0420. The configuration of the vector address is the same in both normal* and advanced modes, a 2-byte unit being used in both cases. These two bytes specify the lower bits of the register information start address. Note: * Normal mode cannot be used in this LSI.
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Section 8 Data Transfer Controller (DTC)
Lower address 0 Register information start address MRA MRB Chain transfer CRA MRA MRB CRA SAR DAR CRB Register information for 2nd transfer in chain transfer 1 2 SAR DAR CRB Register information 3
4 bytes
Figure 8.3 The Location of DTC Register Information in Address Space
DTC vector address
Register information start address
Register information
Chain transfer
Figure 8.4 Correspondence between DTC Vector Address and Register Information
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Section 8 Data Transfer Controller (DTC)
Table 8.2
Interrupt Source Software External pin
Interrupt Sources, DTC Vector Addresses, and Corresponding DTCEs
Origin of Interrupt Source Write to DTVECR IRQ0 IRQ1 IRQ3 IRQ4 IRQ5 DTC Vector Number Vector Address DTVECR 16 17 19 20 21 DTCE* Priority High
H'0400 + vector number x 2 H'0420 H'0422 H'0426 H'0428 H'042A H'0438 H'0440 H'0442 H'0444 H'0446 H'0450 H'0452 H'0458 H'045A H'0480 H'0482 H'0488 H'048A H'04A2 H'04A4 H'04AA H'04AC H'04B8 H'04BA H'04C0 H'04C2 DTCEA7 DTCEA6 DTCEA4 DTCEA3 DTCEA2 DTCEB6 DTCEB5 DTCEB4 DTCEB3 DTCEB2 DTCEB1 DTCEB0 DTCEC7 DTCEC6 DTCED3 DTCED2 DTCED1 DTCED0 DTCEE3 DTCEE2 DTCEE1 DTCEE0 DTCEF5 DTCEF4 DTCEF3 DTCEF2
A/D TPU Channel 0
ADI 28 (A/D conversion end) TGI0A TGI0B TGI0C TGI0D 32 33 34 35 40 41 44 45 64 65 68 69 81 82 85 86 92 93 96 97
TPU Channel 1 TPU Channel 2 8-bit timer channel 0 8-bit timer channel 1 SCI channel 0 SCI channel 1 8-bit timer channel 2 8-bit timer channel 3
TGI1A TGI1B TGI2A TGI2B CMIA0 CMIB0 CMIA1 CMIB1 RXI0 TXI0 RXI1 TXI1 CMIA2 CMIB2 CMIA3 CMIB3
Low
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Section 8 Data Transfer Controller (DTC) Interrupt Source IIC channel 0 IIC channel 1 SCI channel 2 Origin of Interrupt Source IICI0 IICI1 RXI2 TXI2 DTC Vector Number Vector Address 100 102 121 122 H'04C8 H'04CC H'04F2 H'04F4
DTCE* DTCEF1 DTCEF0 DTCEI7 DTCEI6
Priority High
Low
Note: * DTCE bits with no corresponding interrupt are reserved, and should be written with 0.
8.5
Operation
Register information is stored in on-chip RAM. When activated, the DTC reads register information in on-chip RAM and transfers data. After the data transfer, the DTC writes updated register information back to the memory. The pre-storage of register information in memory makes it possible to transfer data over any required number of channels. The transfer mode can be specified as normal, repeat, and block transfer mode. Setting the CHNE bit in MRB to 1 makes it possible to perform a number of transfers with a single activation source (chain transfer). The 24-bit SAR designates the DTC transfer source address, and the 24-bit DAR designates the transfer destination address. After each transfer, SAR and DAR are independently incremented, decremented, or left fixed depending on its register information. Figure 8.5 shows the flowchart of DTC operation.
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Section 8 Data Transfer Controller (DTC)
Start
Read DTC vector Next transfer
Read register infomation
Data transfer
Write register information
CHNE = 1 No
Yes
Transfer Counter = 0 or DISEL = 1 No Clear an activeation flag
Yes
Clear DTCER
End
Interupt exception handling
Note: For details, see section related to each peripheral module.
Figure 8.5 Flowchart of DTC Operation 8.5.1 Normal Mode
In normal mode, one operation transfers one byte or one word of data. From 1 to 65,536 transfers can be specified. Once the specified number of transfers have been completed, a CPU interrupt can be requested. Table 8.3 lists the register information in normal mode. Figure 8.6 shows the memory mapping in normal mode.
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Section 8 Data Transfer Controller (DTC)
Table 8.3
Name
Register Information in Normal Mode
Abbreviation SAR DAR CRA CRB Function Designates source address Designates destination address Designates transfer count Not used
DTC source address register DTC destination address register DTC transfer count register A DTC transfer count register B
SAR Transfer
DAR
Figure 8.6 Memory Mapping in Normal Mode 8.5.2 Repeat Mode
In repeat mode, one operation transfers one byte or one word of data. From 1 to 256 transfers can be specified. Once the specified number of transfers have ended, the initial state of the transfer counter and the address register specified as the repeat area is restored, and transfer is repeated. In repeat mode the transfer counter value does not reach H'00, and therefore CPU interrupts cannot be requested when DISEL = 0. Table 8.4 lists the register information in repeat mode. Figure 8.7 shows the memory mapping in repeat mode.
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Section 8 Data Transfer Controller (DTC)
Table 8.4
Name
Register Information in Repeat Mode
Abbreviation SAR DAR CRAH CRAL CRB Function Designates source address Designates destination address Holds number of transfers Designates transfer count Not used
DTC source address register DTC destination address register DTC transfer count register AH DTC transfer count register AL DTC transfer count register B
SAR or DAR
Repeat area Transfer
DAR or SAR
Figure 8.7 Memory Mapping in Repeat Mode 8.5.3 Block Transfer Mode
In block transfer mode, one operation transfers one block of data. Either the transfer source or the transfer destination is designated as a block area. The block size can be between 1 to 256. When the transfer of one block ends, the initial state of the block size counter and the address register specified as the block area is restored. The other address register is then incremented, decremented, or left fixed. From 1 to 65,536 transfers can be specified. Once the specified number of transfers have been completed, a CPU interrupt is requested. Table 8.5 lists the register information in block transfer mode. Figure 8.8 shows the memory mapping in block transfer mode.
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Section 8 Data Transfer Controller (DTC)
Table 8.5
Name
Register Information in Block Transfer Mode
Abbreviation SAR DAR CRAH CRAL CRB Function Designates source address Designates destination address Holds block size Designates block size count Transfer count
DTC source address register DTC destination address register DTC transfer count register AH DTC transfer count register AL DTC transfer count register B
First block
SAR or DAR
Block area Transfer
DAR or SAR
Nth block
Figure 8.8 Memory Mapping in Block Transfer Mode
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Section 8 Data Transfer Controller (DTC)
8.5.4
Chain Transfer
Setting the CHNE bit in MRB to 1 enables a number of data transfers to be performed consecutively in response to a single transfer request. SAR, DAR, CRA, CRB, MRA, and MRB, which define data transfers, can be set independently. Figure 8.9 shows the memory map for chain transfer. When activated, the DTC reads the register information start address stored at the vector address, and then reads the first register information at that start address. After the data transfer, the CHNE bit will be tested. When it has been set to 1, DTC reads the next register information located in a consecutive area and performs the data transfer. These sequences are repeated until the CHNE bit is cleared to 0. In the case of transfer with CHNE set to 1, an interrupt request to the CPU is not generated at the end of the specified number of transfers or by setting of the DISEL bit to 1, and the interrupt source flag for the activation source is not affected.
Source
Destination
Register information CHNE=1
DTC vector address
Register information start address
Register information CHNE=0
Source
Destination
Figure 8.9 Chain Transfer Operation
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Section 8 Data Transfer Controller (DTC)
8.5.5
Interrupts
An interrupt request is issued to the CPU when the DTC has completed the specified number of data transfers, or a data transfer for which the DISEL bit was set to 1. In the case of interrupt activation, the interrupt set as the activation source is generated. These interrupts to the CPU are subject to CPU mask level and interrupt controller priority level control. In the case of software activation, a software-activated data transfer end interrupt (SWDTEND) is generated. When the DISEL bit is 1 and one data transfer has been completed, or the specified number of transfers have been completed, after data transfer ends the SWDTE bit is held at 1 and an SWDTEND interrupt is generated. The interrupt handling routine will then clear the SWDTE bit to 0. When the DTC is activated by software, an SWDTEND interrupt is not generated during a data transfer wait or during data transfer even if the SWDTE bit is set to 1. 8.5.6 Operation Timing
Figures 8.10 to 8.12 show the DTC operation timings.
DTC activation request DTC request Data transfer
Read Write
Vector read Address
Transfer information read
Transfer information write
Figure 8.10 DTC Operation Timing (Example in Normal Mode or Repeat Mode)
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Section 8 Data Transfer Controller (DTC)
DTC activation request DTC request Vector read Address Data transfer
Read Write Read Write
Transfer information read
Transfer information write
Figure 8.11 DTC Operation Timing (Example of Block Transfer Mode, with Block Size of 2)
DTC activation request DTC request Vector read Address
Read Write Read Write
Data transfer
Data transfer
Transfer information read
Transfer information write
Transfer information read
Transfer information write
Figure 8.12 DTC Operation Timing (Example of Chain Transfer)
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Section 8 Data Transfer Controller (DTC)
8.5.7
Number of DTC Execution States
Table 8.6 lists execution status for a single DTC data transfer, and table 8.7 shows the number of states required for each execution status. Table 8.6 DTC Execution Status
Register Information Read/Write J 6 6 6 Internal Operations M 3 3 3
Mode Normal Repeat Block transfer
Vector Read I 1 1 1
Data Read K 1 1 N
Data Write L 1 1 N
Legend: N: Block size (initial setting of CRAH and CRAL)
Table 8.7
Number of States Required for Each Execution Status
OnChip RAM 32 1 1 1 1 1 1 OnChip ROM 16 1 1 1 1 1 1 Internal I/O Registers 8 2 2 4 2 4 16 2 2 2 2 2 1 2 4 2 4 2 4 External Devices* 8 3 6+2m 3+m 6+2m 3+m 6+2m 2 2 2 2 2 2 16 3 3+m 3+m 3+m 3+m 3+m
Object to be Accessed Bus width Access states Execution Vector read SI Status Register information read/write SJ Byte data read Word data read Byte data write Word data write SK SK SL SL
Internal operation SM Legend: m: The number of wait states for accessing external devices. Note: * Cannot be used in this LSI.
The number of execution states is calculated from using the formula below. Note that is the sum of all transfers activated by one activation event (the number in which the CHNE bit is set to 1, plus 1).
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Section 8 Data Transfer Controller (DTC)
Number of execution states = I * SI + (J * SJ + K * SK + L * SL) + M * SM For example, when the DTC vector address table is located in the on-chip ROM, normal mode is set, and data is transferred from on-chip ROM to an internal I/O register, then the time required for the DTC operation is 13 states. The time from activation to the end of the data write is 10 states.
8.6
8.6.1
Procedures for Using DTC
Activation by Interrupt
The procedure for using the DTC with interrupt activation is as follows: 1. 2. 3. 4. 5. Set the MRA, MRB, SAR, DAR, CRA, and CRB register information in on-chip RAM. Set the start address of the register information in the DTC vector address. Set the corresponding bit in DTCER to 1. Set the enable bits for the interrupt sources to be used as the activation sources to 1. The DTC is activated when an interrupt used as an activation source is generated. After one data transfer has been completed, or after the specified number of data transfers have been completed, the DTCE bit is cleared to 0 and a CPU interrupt is requested. If the DTC is to continue transferring data, set the DTCE bit to 1. Activation by Software
8.6.2
The procedure for using the DTC with software activation is as follows: 1. 2. 3. 4. 5. 6. Set the MRA, MRB, SAR, DAR, CRA, and CRB register information in on-chip RAM. Set the start address of the register information in the DTC vector address. Check that the SWDTE bit is 0. Write 1 to SWDTE bit and the vector number to DTVECR. Check the vector number written to DTVECR. After one data transfer has been completed, if the DISEL bit is 0 and a CPU interrupt is not requested, the SWDTE bit is cleared to 0. If the DTC is to continue transferring data, set the SWDTE bit to 1. When the DISEL bit is 1, or after the specified number of data transfers have been completed, the SWDTE bit is held at 1 and a CPU interrupt is requested.
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Section 8 Data Transfer Controller (DTC)
8.7
8.7.1
Examples of Use of DTC
Normal Mode
An example is shown in which the DTC is used to receive 128 bytes of data via the SCI. 1. Set MRA to a fixed source address (SM1 = SM0 = 0), incrementing destination address (DM1 = 1, DM0 = 0), normal mode (MD1 = MD0 = 0), and byte size (Sz = 0). The DTS bit can have any value. Set MRB for one data transfer by one interrupt (CHNE = 0, DISEL = 0). Set the SCI RDR address in SAR, the start address of the RAM area where the data will be received in DAR, and 128 (H'0080) in CRA. CRB can be set to any value. Set the start address of the register information at the DTC vector address. Set the corresponding bit in DTCER to 1. Set the SCI to the appropriate receive mode. Set the RIE bit in SCR to 1 to enable the reception complete (RXI) interrupt. Since the generation of a receive error during the SCI reception operation will disable subsequent reception, the CPU should be enabled to accept receive error interrupts. Each time the reception of one byte of data has been completed on the SCI, the RDRF flag in SSR is set to 1, an RXI interrupt is generated, and the DTC is activated. The receive data is transferred from RDR to RAM by the DTC. DAR is incremented and CRA is decremented. The RDRF flag is automatically cleared to 0. When CRA becomes 0 after the 128 data transfers have been completed, the RDRF flag is held at 1, the DTCE bit is cleared to 0, and an RXI interrupt request is sent to the CPU. The interrupt handling routine will perform wrap-up processing. Software Activation
2. 3. 4.
5.
6.
8.7.2
An example is shown in which the DTC is used to transfer a block of 128 bytes of data by means of software activation. The transfer source address is H'1000 and the destination address is H'2000. The vector number is H'60, so the vector address is H'04C0. 1. Set MRA to incrementing source address (SM1 = 1, SM0 = 0), incrementing destination address (DM1 = 1, DM0 = 0), block transfer mode (MD1 = 1, MD0 = 0), and byte size (Sz = 0). The DTS bit can have any value. Set MRB for one block transfer by one interrupt (CHNE = 0). Set the transfer source address (H'1000) in SAR, the destination address (H'2000) in DAR, and 128 (H'8080) in CRA. Set 1 (H'0001) in CRB. Set the start address of the register information at the DTC vector address (H'04C0). Check that the SWDTE bit in DTVECR is 0. Check that there is currently no transfer activated by software.
2. 3.
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Section 8 Data Transfer Controller (DTC)
4. 5.
Write 1 to the SWDTE bit and the vector number (H'60) to DTVECR. The write data is H'E0. Read DTVECR again and check that it is set to the vector number (H'60). If it is not, this indicates that the write failed. This is presumably because an interrupt occurred between steps 3 and 4 and led to a different software activation. To activate this transfer, go back to step 3. If the write was successful, the DTC is activated and a block of 128 bytes of data is transferred. After the transfer, an SWDTEND interrupt occurs. The interrupt handling routine should clear the SWDTE bit to 0 and perform other wrap-up processing.
6. 7.
8.8
8.8.1
Usage Notes
Module Stop Mode Setting
DTC operation can be disabled or enabled using the module stop control register. The initial setting is for DTC operation to be enabled. Register access is disabled by setting module stop mode. Module stop mode cannot be set during DTC operation. For details, refer to section 22, Power-Down Modes. 8.8.2 On-Chip RAM
The MRA, MRB, SAR, DAR, CRA, and CRB registers are all located in on-chip RAM. When the DTC bit is used, the RAME bit in SYSCR should not be cleared to 0. 8.8.3 DTCE Bit Setting
For DTCE bit setting, use bit manipulation instructions such as BSET and BCLR. If all interrupts are masked, multiple activation sources can be set at one time (only at the initial setting) by writing data after executing a dummy read on the relevant register.
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Section 8 Data Transfer Controller (DTC)
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Section 9 I/O Ports
Section 9 I/O Ports
The H8S/2268 Group has ten I/O ports (ports 1, 3, 7, F, H, and J to N), and two input-only port (ports 4 and 9). The H8S/2264 Group has eight I/O ports (ports 1, 3, 7, F, H, and J to L), and two input-only port (ports 4 and 9). Table 9.1 summarizes the port functions. The pins of each port also have other functions such as input/output or interrupt input pins of on-chip peripheral modules. Each I/O port includes a data direction register (DDR) that controls input/output, a data register (DR) that stores output data, and a port register (PORT) used to read the pin states. The input-only ports do not have DDR and DR registers. Port J has a built-in input pull-up MOS function and an input pull-up MOS control register (PCR) to control the on/off state of input pull-up MOS. Port 3 includes an open-drain control register (ODR) that controls the on/off state of the output buffer PMOS. All the I/O ports can drive a single TTL load and a 30 pF capacitive load. The P34 and P35 pins on port 3 are NMOS push pull outputs. Pins IRQ and WKP are Schmitt-trigger inputs. Pins PH0 to PH3 and ports J to N in the H8S/2268 Group and pins PH0 to PH3 and ports J to L in the H8S/2264 Group are shared as LCD segment pins and common pins. They can be selected on an 8-bit basis.
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Section 9 I/O Ports
Table 9.1
Port Port 1
H8S/2268 Group Port Functions (1)
Description Port and Other Functions Name Input/Output and Output Type Schmitt trigger input (IRQ1, IRQ0)
P17/TIOCB2/TCLKD General I/O port also functioning as TPU I/O P16/TIOCA2/IRQ1 pins and interrupt input P15/TIOCB1/TCLKC pins P14/TIOCA1/IRQ0 P13/TIOCD0/TCLKB P12/TIOCC0/TCLKA P11/TIOCB0 P10/TIOCA0
Port 3
General I/O port also functioning as SCI_0 2 and SCI_1 I/O pins, I C bus interface I/O pins, and interrupt input pins
P35/SCK1/SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SDA0 P32/SCK0/SDA1/IRQ4 P31/RxD0 P30/TxD0
Specifiable of open drain output Schmitt trigger input (IRQ5, IRQ4) NMOS push-pull output (P35, P34, SCK1)
Port 4
General input port also P47/AN7 functioning as A/D P46/AN6 converter analog input P45/AN5 pins P44/AN4 P43/AN3 P42/AN2 P41/AN1 P40/AN0
Port 7
General I/O port also P77/TxD2 functioning as SCI_2 P76/RxD2 I/O pins and 8-bit timer P75/TMO3/SCK2 I/O pins P74/TMO2 P73/TMO1 P72/TMO0 P71/TMRI23/TMCI23 P70/TMRI01/TMCI01
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Section 9 I/O Ports Port and Other Functions Name Input/Output and Output Type
Port Port 9
Description
General input port also P97/AN9/DA1 functioning as A/D P96/AN8/DA0 converter analog input and D/A converter analog output pins General I/O port also PF3/ADTRG/IRQ3 functioning as interrupt input pins and an A/D converter input pins General input port General I/O port also functioning as LCD common output pins PH7 PH3/COM4 PH2/COM3 PH1/COM2 PH0/COM1 PJ7/WKP7/SEG8 PJ6/WKP6/SEG7 PJ5/WKP5/SEG6 PJ4/WKP4/SEG5 PJ3/WKP3/SEG4 PJ2/WKP2/SEG3 PJ1/WKP1/SEG2 PJ0/WKP0/SEG1 Built-in input pull-up MOS Schmitt trigger input (WKP7 to WKP0) Schmitt trigger input (IRQ3)
Port F
Port H
Port J
General I/O port also functioning as wakeup input pins and LCD segment output pins
Port K
General I/O port also functioning as LCD segment output pins
PK7/SEG16 PK6/SEG15 PK5/SEG14 PK4/SEG13 PK3/SEG12 PK2/SEG11 PK1/SEG10 PK0/SEG9
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Section 9 I/O Ports Port and Other Functions Name PL7/SEG24 PL6/SEG23 PL5/SEG22 PL4/SEG21 PL3/SEG20 PL2/SEG19 PL1/SEG18 PL0/SEG17 Port M General I/O port also functioning as LCD segment output pins PM7/SEG32 PM6/SEG31 PM5/SEG30 PM4/SEG29 PM3/SEG28 PM2/SEG27 PM1/SEG26 PM0/SEG25 Port N General I/O port also functioning as LCD segment output pins PN7/SEG40 PN6/SEG39 PN5/SEG38 PN4/SEG37 PN3/SEG36 PN2/SEG35 PN1/SEG34 PN0/SEG33 Input/Output and Output Type
Port Port L
Description General I/O port also functioning as LCD segment output pins
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Section 9 I/O Ports
Table 9.1
Port Port 1
H8S/2264 Group Port Functions (2)
Description Port and Other Functions Name Input/Output and Output Type Schmitt trigger input (IRQ1, IRQ0)
P17/TIOCB2 General I/O port also functioning as TPU I/O P16/TIOCA2/IRQ1 pins and interrupt input P15/TIOCB1/TCLKC pins P14/TIOCA1/IRQ0 P13/TCLKB P12/TCLKA P11 P10
Port 3
General I/O port also functioning as SCI_0 2 and SCI_1 I/O pins, I C bus interface I/O pins, and interrupt input pins
P35/SCK1/SCL0 P34/RxD1/SDA0 P33/TxD1 P32/SCK0/IRQ4 P31/RxD0 P30/TxD0
Specifiable of open drain output Schmitt trigger input (IRQ4) NMOS push-pull output (P35, P34, SCK1)
Port 4
General input port also P47/AN7 functioning as A/D P46/AN6 converter analog input P45/AN5 pins P44/AN4 P43/AN3 P42/AN2 P41/AN1 P40/AN0
Port 7
General I/O port also P77/TxD2 functioning as SCI_2 P76/RxD2 I/O pins and 8-bit timer P75/SCK2 I/O pins P74 P73/TMO1 P72/TMO0 P71 P70/TMRI01/TMCI01
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Section 9 I/O Ports Port and Other Functions Name Input/Output and Output Type
Port Port 9
Description
General input port also P97/AN9 functioning as A/D P96/AN8 converter analog inputs General I/O port also PF3/ADTRG/IRQ3 functioning as interrupt input pins and an A/D converter input pins General input port General I/O port also functioning as LCD common output pins PH7 PH3/COM4 PH2/COM3 PH1/COM2 PH0/COM1 PJ7/WKP7/SEG8 PJ6/WKP6/SEG7 PJ5/WKP5/SEG6 PJ4/WKP4/SEG5 PJ3/WKP3/SEG4 PJ2/WKP2/SEG3 PJ1/WKP1/SEG2 PJ0/WKP0/SEG1 Built-in input pull-up MOS Schmitt trigger input (WKP7 to WKP0) Schmitt trigger input (IRQ3)
Port F
Port H
Port J
General I/O port also functioning as wakeup input pins and LCD segment output pins
Port K
General I/O port also functioning as LCD segment output pins
PK7/SEG16 PK6/SEG15 PK5/SEG14 PK4/SEG13 PK3/SEG12 PK2/SEG11 PK1/SEG10 PK0/SEG9
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Section 9 I/O Ports Port and Other Functions Name PL7/SEG24 PL6/SEG23 PL5/SEG22 PL4/SEG21 PL3/SEG20 PL2/SEG19 PL1/SEG18 PL0/SEG17 Input/Output and Output Type
Port Port L
Description General I/O port also functioning as LCD segment output pins
9.1
Port 1
Port 1 is an 8-bit I/O port and has the following registers. * Port 1 data direction register (P1DDR) * Port 1 data register (P1DR) * Port 1 register (PORT1)
9.1.1
Port 1 Data Direction Register (P1DDR)
P1DDR specifies input or output of the port 1 pins using the individual bits. P1DDR cannot be read; if it is, an undefined value will be read.
Bit 7 6 5 4 3 2 1 0 Bit Name P17DDR P16DDR P15DDR P14DDR P13DDR P12DDR P11DDR P10DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port 1 pin an output pin. Clearing this bit to 0 makes the pin an input pin.
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Section 9 I/O Ports
9.1.2
Port 1 Data Register (P1DR)
P1DR stores output data for port 1 pins.
Bit 7 6 5 4 3 2 1 0 Bit Name P17DR P16DR P15DR P14DR P13DR P12DR P11DR P10DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.1.3
Port 1 Register (PORT1)
PORT1 shows the pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Bit Name P17 P16 P15 P14 P13 P12 P11 P10 Initial Value * * * * * * * * R/W R R R R R R R R Description If a port 1 read is performed while P1DDR bits are set to 1, the P1DR values are read. If a port 1 read is performed while P1DDR bits are cleared to 0, the pin states are read.
Note: * Determined by the states of pins P17 to P10.
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Section 9 I/O Ports
9.1.4
Pin Functions
Port 1 pins also function as TPU I/O pins (TCLKA, TCLKB, TCLKC, TCLKD*, TIOCA0*, TIOCB0*, TIOCC0*, TIOCD0*, TIOCA1, TIOCB1, TIOCA2, and TIOCB2) and external interrupt input pins (IRQ0 and IRQ1). Port 1 pin functions are shown below. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). Note: * Supported only by the H8S/2268 Group. * P17/TIOCB2/TCLKD*
3
The pin function is switched as shown below according to the combination of the TPU channel 2 setting, TPSC2 to TPS0 bits in TCR0*, and the P17DDR bit.
TPU Channel 2 Setting P17DDR Pin function Output Input or Initial Value 0 P17 input 1 P17 output *1 TIOCB2 input
TIOCB2 output
23 TCLKD input* *
Notes: 1. This pin functions as TIOCB2 input when TPU channel 2 timer operating mode is set to 3 normal operation or phase counting mode* and IOB3 in TIOR_2 is set to 1. 2. In the H8S/2268 Group, this pin functions as TCLKD input when TPSC2 to TPSC0 in 3 TCR0 are set to 111 or when channel 2 is set to phase counting mode* . 3. Supported only by the H8S/2268 Group.
* P16/TIOCA2/IRQ1 The pin function is switched as shown below according to the combination of the TPU channel 2 setting and the P16DDR bit.
TPU Channel 2 Setting P16DDR Pin function Output Input or Initial Value 0 P16 input 1 P16 output *1 TIOCA2 input
2
TIOCA2 output
IRQ1 input*
Notes: 1. This pin functions as TIOCA2 input when TPU channel 2 timer operating mode is set to 3 normal operation or phase counting mode* and IOA3 in TIOR_2 is 1. 2. When this pin is used as an external interrupt pin, do not specify other functions. 3. Supported only by the H8S/2268 Group.
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Section 9 I/O Ports
* P15/TIOCB1/TCLKC The pin function is switched as shown below according to the combination of the TPU channel 1 setting, TPSC2 to TPSC0 bits in TCR0*3 and TCR2, and the P15DDR bit.
TPU Channel 1 Setting P15DDR Pin function Output Input or Initial Value 0 P15 input 1 P15 output 1 TIOCB1 input*
2
TIOCB1 output
TCLKC input*
Notes: 1. This pin functions as TIOCB1 input when TPU channel 1 timer operating mode is set to 3 normal operation or phase counting mode* and IOB3 to IOB0 in TIOR_1 are set to10xx. 3 2. This pin functions as TCLKC inputs when TPSC2 to TPSC0 in TCR0* or TCR2 are set 3 to 110 or TCLKC input when channel 2 is set to phase counting mode* . 3. Supported only by the H8S/2268 Group.
* P14/TIOCA1/IRQ0 The pin function is switched as shown below according to the combination of the TPU channel 1 setting and the P14DDR bit.
TPU Channel 1 Setting P14DDR Pin function Output Input or Initial Value 0 P14 input 1 P14 output 1 TIOCA1 input*
2
TIOCA1 output
IRQ0 input*
Notes: 1. This pin functions as TIOCA1 input when TPU channel 1 timer operating mode is set to 3 normal operation or phase counting mode* and IOA3 to IOA0 in TIOR_1 are set to 10xx. 2. When this pin is used as an external interrupt pin, do not specify other functions. 3. Supported only by the H8S/2268 Group.
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Section 9 I/O Ports
* P13/TIOCD0* /TCLKB
3
The pin function is switched as shown below according to the combination of the TPU channel 3 3 0* setting, TPSC2 to TPSC0 bits in TCR0* , TCR1 and TCR2, and the P13DDR bit.
TPU Channel 0 Setting* P13DDR Pin function
3
Output
Input or Initial Value 0 *3 P13 input 1 P13 output 13 TIOCD0 input* *
2
TIOCD0 output
TCLKB input*
Notes: 1. In the H8S/2268 Group, this pin functions as TIOCD0 input when TPU channel 0 timer operating mode is set to normal operation and IOD3 to IOD0 in TIORL_0 are set to 10xx. 2. This pin functions as TCLKB input when TPSC2 to TPSC0 are set to 101 in any of 3 TCR0* , TCR1 and TCR2. TCLKB input, or when channel 1 is set to phase counting *3. mode 3. Supported only by the H8S/2268 Group.
* P12/TIOCC0* /TCLKA
3
The pin function is switched as shown below according to the combination of the TPU channel 3 3 0* setting, TPSC2 to TPSC0 bits in TCR2, TCR1 and TCR0* , and the P12DDR bit.
TPU Channel 0 Setting* P12DDR Pin function
3
Output
Input or Initial Value 0 P12 input 1 P12 output *1*3 TIOCC0 input
2
3 TIOCC0 output*
TCLKA input*
Notes: 1. In the H8S/2268 Group, TIOCC0 input when TPU channel 0 timer operating mode is set to normal operation and IOC3 to IOC0 in TIORL_0 are set to 10xx. 2. This functions as TCLKA input when TPSC2 to TPSC0 are set to 100 in any of TCR2, 3 3 TCR1 and TCR0* or when channel 1 is set to phase counting mode* . 3. Supported only by the H8S/2268 Group.
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Section 9 I/O Ports
* P11/TIOCB0*
2
The pin function is switched as shown below according to the combination of the TPU channel 2 0* setting and the P11DDR bit.
TPU Channel 0 Setting* P11DDR Pin function
2
Output
Input or Initial Value 0 *2 P11 input TIOCB0 input *1*2 1 P11 output
TIOCB0 output
Notes: 1. In the H8S/2268 Group, this pin functions as TIOCB0 input when TPU channel 0 timer operating mode is set to normal operation and IOB3 to IOB0 in TIORH_0 are set to 10xx. 2. Supported only by the H8S/2268 Group.
* P10/TIOCA0*
2
The pin function is switched as shown below according to the combination of the TPU channel 2 0* setting and the P10DDR bit.
TPU Channel 0 Setting* P10DDR Pin function
2
Output
Input or Initial Value 0 *2 P10 input TIOCA0 input *1*2 1 P10 output
TIOCA0 output
Notes: 1. In the H8S/2268 Group, this pin functions as TIOCA0 input when TPU channel 0 timer operating mode is set to normal operation and IOA3 to IOA0 in TIORH_0 are set to 10xx. 2. Supported only by the H8S/2268 Group.
9.2
Port 3
Port 3 is a 6-bit I/O port. The P34, P35, and SCK1 function as NMOS push-pull outputs. Port 3 has the following registers. * Port 3 data direction register (P3DDR) * Port 3 data register (P3DR) * Port 3 register (PORT3) * Port 3 open drain control register (P3ODR)
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Section 9 I/O Ports
9.2.1
Port 3 Data Direction Register (P3DDR)
P3DDR specifies input or output of the port 3 pins using the individual bits. P3DDR cannot be read; if it is, an undefined value will be read.
Bit 7, 6 Bit Name Initial Value R/W Description Reserved These bits are always read as undefined value and cannot be modified. 5 4 3 2 1 0 P35DDR P34DDR P33DDR P32DDR P31DDR P30DDR 0 0 0 0 0 0 W W W W W W When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port 3 pin an output port. Clearing this bit to 0 makes the pin an input port.
Undefined
9.2.2
Port 3 Data Register (P3DR)
P3DR stores output data for port 3 pins.
Bit 7, 6 Bit Name Initial Value R/W Description Reserved These bits are always read as undefined value and cannot be modified. 5 4 3 2 1 0 P35DR P34DR P33DR P32DR P31DR P30DR 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W Output data for a pin is stored when the pin is specified as a general purpose output port.
Undefined
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Section 9 I/O Ports
9.2.3
Port 3 Register (PORT3)
PORT3 shows the pin states. This register cannot be modified.
Bit 7, 6 Bit Name Initial Value R/W Description Reserved These bits are always read as undefined value and cannot be modified. 5 4 3 2 1 0 P35 P34 P33 P32 P31 P30 * * * * * * R R R R R R If a port 3 read is performed while P3DDR bits are set to 1, the P3DR values are read. If a port 3 read is performed while P3DDR bits are cleared to 0, the pin states are read.
Undefined
Note: * Determined by the states of pins P35 to P30.
9.2.4
Port 3 Open Drain Control Register (P3ODR)
P3ODR controls on/off state of the PMOS for port 3 pins.
Bit 7, 6 Bit Name Initial Value R/W Description Reserved These bits are always read as undefined value and cannot be modified. 5 4 3 2 1 0 P35ODR P34ODR P33ODR P32ODR P31ODR P30ODR 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W When each of P33ODR to P30ODR bits is set to 1, the corresponding pins P33 to P30 function as NMOS open drain outputs. When cleared to 0, the corresponding pins function as CMOS outputs. When each of P35ODR and P34ODR bits is set to 1, the corresponding pins P35 and P34 function as NMOS open drain outputs. When they are cleared to 0, the corresponding pins function as NMOS push pull outputs.
Undefined
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Section 9 I/O Ports
9.2.5
Pin Functions
The port 3 pins also function as SCI I/O input pins (TxD0, RxD0, SCK0, TxD1, RxD1, and SCK1), I2C bus interface I/O pins (SCL0, SDA0, SCL1*, and SDA1*), and as external interrupt input pins (IRQ4 and IRQ5*). As shown in figure 9.1, when the pins P34, P35, SCK1, SCL0, or SDA0 type open drain output is used, a bus line is not affected even if the power supply for this LSI fails. Use (a) type open drain output when using a bus line having a state in which the power is not supplied to this LSI. Note: * Supported only by the H8S/2268 Group.
NMOS Off 0 Output Input Input 1
PMOS Off
Output
(a) Open drain output type for P34, P35, SCK1, SCL0, and SDA0 pins Note: * Supported only by the H8S/2268 Group.
(b) Open drain output type for P33 to P30, SCL1*, and SDA1* pins
Figure 9.1 Types of Open Drain Outputs The NMOS push-pull outputs of the P34, P35, and SCK1 pins do not reach the voltage of Vcc, even when the pins are specified so that they are driven high and regardless of the load. To output the voltage of Vcc, a pull-up resistor must be externally connected. Notes: 1. When a pull-up resistor is externally connected, signals take longer to rise and fall. When the input signals take a long time to rise and fall, connect an input circuit that has a noise reduction function, such as a Schmitt trigger circuit. 2. For high-speed operation, use an external circuit such as a level shifter. 3. For output characteristics, see the entries for high output voltage for pins P34 and P35 in table 25.15, DC Characteristics (1). The value of the pull-up resistor should satisfy the specification in table 25.16, Permissible Output Currents. The functions of port 3 pins are shown below.
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Section 9 I/O Ports
* P35/SCK1/SCL0/IRQ5*
2
The pin function is switched as shown below according to the combination of the ICE bit in ICCR_0 of IIC_0, C/A bit in SMR of SCI_1, CKE0 and CKE1 bits in SCR and the P35DDR bit.
ICE CKE1 C/A CKE0 P35DDR Pin functions 0 0 1 P35 input pin P35 output pin 0 1 0 1 0 1 1 0 0 0 SCL0 I/O pin
SCK1 output SCK1 output SCK1 input pin pin pin *1*2 IRQ5 Input
Notes: 1. When this pin is used as an external interrupt pin, do not specify other functions. 2. Supported only by the H8S/2268 Group.
* P34/RxD1/SDA0 The pin function is switched as shown below according to the combination of the ICE bit in ICCR_0 of IIC_0, RXD1S bit in SCKCR2*, RE bit in SCR of SCI_1 and the P34DDR bit.
ICE RXD1S* RE P34DDR Pin functions 0 0 1 P34 input pin P34 output pin 0 1 RxD1 input pin 0 P34 input pin 0 1 1 P34 output pin 1 SDAO I/O pin
Note: * Supported only by the H8S/2264 Group.
* P33/TxD1/SCL1* The pin function is switched as shown below according to the combination of the ICE bit* in ICCR_1 of IIC_1, TE bit in SCR of SCI_1 and the P33DDR bit.
ICE* TE P33DDR Pin functions 0 P33 input pin 0 1 P33 output pin 0 1 TxD1 output pin 1 SCL1 I/O pin*
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Section 9 I/O Ports
* P32/SCK0/SDA1* /IRQ4
2
The pin function is switched as shown below according to the combination of the ICE bit* in ICCR_1 of IIC_1, C/A bit in SMR of SCI_0, CKE0 and CKE1 bits in SCR and the P32DDR bit.
2
ICE* C/A
2
0 0 0 0 0 1 P32 input pin P32 output pin 1 1 1
1 0 0 0 SDA1 I/O 2 pin*
CKE1 CKE0 P32DDR Pin functions
SCK0 output SCK0 output SCK0 input pin pin pin *1 IRQ4 Input
Notes: 1. When this pin is used as an external interrupt pin, do not specify other functions. 2. Supported only by the H8S/2268 Group.
* P31/RxD0 The pin function is switched as shown below according to the combination of the RE bit in SCR of SCI_0 and the P31DDR bit.
RE P31DDR Pin functions 0 P31 input pin 0 1 P31 output pin 1 RxD0 input pin
* P30/TxD0 The pin function is switched as shown below according to the combination of the TE bit in SCR of SCI_0 and the P30DDR bit.
TE P30DDR Pin functions 0 P30 input pin 0 1 P30 output pin 1 TxD0 output pin
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Section 9 I/O Ports
9.3
Port 4
Port 4 is an 8-bit input-only port and has the following register. * Port 4 register (PORT4) 9.3.1 Port 4 Register (PORT4)
PORT4 shows port 4 pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Bit Name P47 P46 P45 P44 P43 P42 P41 P40 Initial Value * * * * * * * * R/W R R R R R R R R Description The pin states are always read when a port 4 read is performed.
Note: * Determined by the states of pins P47 to P40.
9.3.2
Pin Functions
Port 4 pins also function as A/D converter analog input pins (AN0 to AN7).
9.4
Port 7
Port 7 is an 8-bit I/O port and has the following registers. * Port 7 data direction register (P7DDR) * Port 7 data register (P7DR) * Port 7 register (PORT7)
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Section 9 I/O Ports
9.4.1
Port 7 Data Direction Register (P7DDR)
P7DDR specifies input or output of the port 7 pins using the individual bits. P7DDR cannot be read; if it is, an undefined value will be read.
Bit 7 6 5 4 3 2 1 0 Bit Name P77DDR P76DDR P75DDR P74DDR P73DDR P72DDR P71DDR P70DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port 7 pin an output pin. Clearing this bit to 0 makes the pin an input pin.
9.4.2
Port 7 Data Register (P7DR)
P7DR stores output data for port 7 pins.
Bit 7 6 5 4 3 2 1 0 Bit Name P77DR P76DR P75DR P74DR P73DR P72DR P71DR P70DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
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Section 9 I/O Ports
9.4.3
Port 7 Register (PORT7)
PORT7 shows the pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Bit Name P77 P76 P75 P74 P73 P72 P71 P70 Initial Value * * * * * * * * R/W R R R R R R R R Description If a port 1 read is performed while P7DDR bits are set to 1, the P7DR values are read. If a port 1 read is performed while P7DDR bits are cleared to 0, the pin states are read.
Note: * Determined by the states of pins P77 to P70.
9.4.4
Pin Functions
Port 7 pins also function as the 8-bit timer I/O pins (TMRI01, TMCI01, TMRI23*, TMCI23*, TMO0, TMO1, TMO2*, and TMO3*) and SCI I/O pins (SCK2, RxD2 and TxD2). Port 7 pin functions are shown below. Note: * Supported only by the H8S/2268 Group. * P77/TxD2 The pin function is switched as shown below according to the combination of the TE bit in SCR of SCI_2 and the P77DDR bit.
TE P77DDR Pin functions 0 P77 input pin 0 1 P77 output pin 1 TxD2 output pin
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Section 9 I/O Ports
* P76/RxD2 The pin function is switched as shown below according to the combination of the RE bit in SCR of SCI_2 and the P76DDR bit.
RE P76DDR Pin functions 0 P76 input pin 0 1 P76 output pin 1 RxD2 Input pin
* P75/TMO3*/SCK2 The pin function is switched as shown below according to the combination of the OS3 to OS0 bits in TCSR_3* of the 8-bit timer, the C/A bit in SMR of SCI_2, the CKE0 and CKE1 bits in SCR and the P75DDR bit.
OS3 to OS0* CKE1 C/A CKE0 P75DDR Pin functions 0 0 1 P75 input pin P75 output pin 0 1 All bits are 0 0 1 1 Any bit is 1
SCK2 output SCK2 output SCK2 input TMO3 pin pin pin output pin*
Note: * Supported only by the H8S/2268 Group.
* P74/TMO2* The pin function is switched as shown below according to the combination of the OS3 to OS0 bits in TCSR_2* of the 8-bit timer and the P74DDR bit.
OS3 to OS0* P74DDR Pin functions 0 P74 input pin All bits are 0 1 P74 output pin Any bit is 1 TMO2 output pin*
Note: * Supported only by the H8S/2268 Group.
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Section 9 I/O Ports
* P73/TMO1 The pin function is switched as shown below according to the combination of the OS3 to OS0 bits in TCSR_1 of the 8-bit timer and the P73DDR bit.
OS3 to OS0 P73DDR Pin functions 0 P73 input pin All bits are 0 1 P73 output pin Any bit is 1 TMO1 output pin
* P72/TMO0 The pin function is switched as shown below according to the combination of the OS3 to OS0 bits in TCSR_0 of the 8-bit timer and the P72DDR bit.
OS3 to OS0 P72DDR Pin functions 0 P72 input pin All bits are 0 1 P72 output pin Any bit is 1 TMO0 output pin
* P71/TMRI23*/TMCI23* The pin function is switched as shown below according to the P71DDR bit.
P71DDR Pin functions 0 P71 input pin TMRI23/TMCI23 input pin* Note: * Supported only by the H8S/2268 Group. 1 P71 output pin
* P70/TMRI01/TMCI01 The pin function is switched as shown below according to the P70DDR bit.
P70DDR Pin functions 0 P70 input pin TMRI01/TMCI01 input pin 1 P70 output pin
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Section 9 I/O Ports
9.5
Port 9
Port 9 is a 2-bit input-only port and has the following register. * Port 9 register (PORT9) 9.5.1 Port 9 Register (PORT9)
PORT9 shows port 9 pin states. This register cannot be modified.
Bit 7 6 5 to 0 Bit Name P97 P96 Initial Value * * R/W R R Description The pin states are always read when these bits are read. Reserved These bits are always read as undefined value and cannot be modified. Note: * Determined by the states of pins P97 and P96.
Undefined R
9.5.2
Pin Functions
Port 9 pins also function as A/D converter analog input pins (AN8 and AN9) and D/A converter analog output pins (DA0 and DA1)*. Note: * Supported only by the H8S/2268 Group.
9.6
Port F
Port F is a 1-bit I/O port and has the following register. * Port F data direction register (PFDDR) * Port F data register (PFDR) * Port F register (PORTF)
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Section 9 I/O Ports
9.6.1
Port F Data Direction Register (PFDDR)
PFDDR specifies input or output the port F pins using the individual bits. PFDDR cannot be read; if it is, an undefined value will be read.
Bit 7 to 4 Bit Name Initial Value R/W Description Reserved These bits are always read as undefined value and cannot be modified. 3 PF3DDR 0 W When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port F pin an output pin. Clearing this bit to 0 makes the pin an input pin. Reserved These bits are always read as undefined value and cannot be modified.
Undefined
2 to 0
Undefined
9.6.2
Port F Data Register (PFDR)
PFDR stores output data for port F pins.
Bit 7 to 4 Bit Name Initial Value R/W Description Reserved These bits are always read as undefined value and cannot be modified. 3 2 to 0 PF3DR 0 R/W Output data for a pin is stored when the pin is specified as a general purpose output port. Reserved These bits are always read as undefined value and cannot be modified.
Undefined
Undefined
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Section 9 I/O Ports
9.6.3
Port F Register (PORTF)
PORTF shows the pin states. This register cannot be modified.
Bit 7 to 4 Bit Name Initial Value R/W Description Reserved These bits are always read as undefined value and cannot be modified. 3 PF3 * R If this bit is read while PFDDR is set to 1, the PFDR value is read. If this bit is read while PFDDR is cleared, the PF3 pin states are read. Reserved These bits are always read as undefined value and cannot be modified. Note: * Determined by the states of PF3 pin.
Undefined
2 to 0
Undefined
9.6.4
Pin Functions
Port F pins also function as an external interrupt input pin (IRQ3) and A/D trigger output pin (ADTRG). Port F pin functions are shown below. * PF3/ADTRG/IRQ3 The pin function is switched as shown below according to the combination of the TRGS1 and TRGS0 bits of ADCR of the A/D converter and the PF3DDR bit.
PF3DDR Pin functions 0 PF3 input pin
1 ADTRG Input pin*
1 PF3 output pin IRQ3 input pin*
2
Notes: 1. When TRGS0 = TRGS1 = 1, port F is used as the ADTRG input pin. 2. When this port is used as an external interrupt pin, do not specify other functions.
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Section 9 I/O Ports
9.7
Port H
Port H is a 1-bit input and 4-bit I/O port. Port H has the following registers. * Port H data direction register (PHDDR) * Port H data register (PHDR) * Port H register (PORTH) 9.7.1 Port H Data Direction Register (PHDDR)
PHDDR specifies input or output the port H pins using the individual bits. PHDDR cannot be read; if it is, an undefined value will be read.
Bit 7 to 4 Bit Name Initial Value R/W Description Reserved These bits are always read as undefined value and cannot be modified. 3 2 1 0 PH3DDR PH2DDR PH1DDR PH0DDR 0 0 0 0 W W W W When a pin is specified as a general purpose I/O port, setting these bits to 1 makes the corresponding port H pin an output pin. Clearing this bit to 0 makes the pin an input pin.
Undefined
9.7.2
Port H Data Register (PHDR)
PHDR stores output data for port H.
Bit 7 to 4 Bit Name Initial Value R/W Description Reserved These bits are always read as undefined value and cannot be modified. 3 2 1 0 PH3DR PH2DR PH1DR PH0DR 0 0 0 0 R/W R/W R/W R/W Output data for a pin is stored when the pin is specified as a general purpose output port.
Undefined
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Section 9 I/O Ports
9.7.3
Port H Register (PORTH)
PORTH shows the pin states and cannot be modified.
Bit 7 6 to 4 Bit Name PH7 Initial Value * R/W R Description When this bit is read, PH7 pin status is always read. Reserved These bits are always read as undefined value and cannot be modified. 3 2 1 0 PH3 PH2 PH1 PH0 * * * * R R R R If these bits are read while the corresponding PHDDR bits are set to 1, the PHDR value is read. If these bits are read while PHDDR bits are cleared to 0, the pin states are read.
Undefined
Note: * Determined by the states of pins PH7 and PH3 to PH0.
9.7.4
Pin Functions
Port H pins also function as a DTMF generation circuit analog output pin (TONED)*, 8-bit reload timer input pin (TMCI4)*, and LCD driver common output pins (COM4 to COM1). Port H pin functions are shown below. Note: * Supported only by the H8S/2268 Group. * PH7/TONED/TMCI4 (H8S/2268 Group) The pin function is switched as shown below according to the combination of the CLOE and RWOE bits in DTCR of the DTMF generation circuit.
CLOE, RWOE Pin functions All bits are 0 1 PH7 input pin*
12 TMCI4 input pin* *
Any bit is 1 TONED output pin
Notes: 1. Voltage applied to PH7 and TMCI4 should be within the range of AVss (PH7, TMCI4) AVcc. 2. When this port is used as TMCI4 input pin, do not specify other functions.
* PH7 (H8S/2264 Group) This is an input pin. Voltage applied to this pin should be within the range of Vss (PH7) Vcc.
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Section 9 I/O Ports
* PH3/COM4 The pin function is switched as shown below according to the combination of the DTS1, DTS0, CMX, and SGS3 to SGS0 bits of LPCR, the SUPS* bit of LCR2 of the LCD controller/driver and the PH3DDR bit.
SGS3 to SGS0 DTS1, DTS0 CMX SUPS* PH3DDR Pin functions 0
PH3 input pin
B'0000 B'XX 1
PH3 output pin
H8S/2268 Group: B'0001, B'001X, or B'010X H8S/2264 Group: B'001X or B'010X B'0X 0 0
PH3 input pin
B'10 1 0 0 1
PH3 output pin
B'11 1 1
COM4 output pin
0

COM4 output pin
1
PH3 output pin
COM4 PH3 output input pin pin
Setting prohibited
Legend: X: Don't care Note: * Supported only by the H8S/2268 Group.
* PH2/COM3 The pin function is switched as shown below according to the combination of the DTS1, DTS0, CMX, SGS3 to SGS0 bits of LPCR of the LCD controller/driver, and PH2DDR bit.
SGS3 to SGS0 DTS1, DTS0 CMX PH2DDR Pin functions Legend: X: Don't care 0 PH2 input pin B'0000 B'XX 1 0 PH2 output pin PH2 input pin 0 1 PH2 output pin H8S/2268 Group: B'0001, B'001X or B'010X H8S/2264 Group: B'001X or B'010X B'0X 1 COM3 output pin B'1X
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Section 9 I/O Ports
* PH1/COM2 The pin function is switched as shown below according to the combination of the DTS1, DTS0, CMX, SGS3 to SGS0 bits of LPCR of the LCD controller/driver, and PH2DDR bit.
SGS3 to SGS0 DTS1, DTS0 CMX PH1DDR Pin functions Legend: X: Don't care 0 PH1 input pin B'0000 B'XX 1 PH1 output pin 0 0 1 PH1 input pin PH1 output pin H8S/2268 Group: B'0001, B'001X or B'010X H8S/2264 Group: B'001X or B'010X B'00 1 COM2 output pin Other than B'00X
* PH0/COM1 The pin function is switched as shown below according to the combination of the SGS3 to SGS0 bits in LPCR of the LCD controller/driver and the PH0DDR bit.
SGS3 to SGS0 PH0DDR Pin functions Legend: X: Don't care 0 PH0 input pin B'0000 1 PH0 output pin H8S/2268 Group: B'0001, B'001X or B'010X H8S/2264 Group: B'001X or B'010X
COM1 output pin
9.8
Port J
Port J is an 8-bit I/O port and has the following registers. * Port J data direction register (PJDDR) * Port J data register (PJDR) * Port J register (PORTJ) * Port J pull-up MOS control register (PJPCR) * Wakeup control register (WPCR)
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Section 9 I/O Ports
9.8.1
Port J Data Direction Register (PJDDR)
PJDDR specifies input or output the port J pins using the individual bits. PJDDR cannot be read; if it is, an undefined value will be read.
Bit 7 6 5 4 3 2 1 0 Bit Name PJ7DDR PJ6DDR PJ5DDR PJ4DDR PJ3DDR PJ2DDR PJ1DDR PJ0DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port J pin an output pin. Clearing this bit to 0 makes the pin an input pin.
9.8.2
Port J Data Register (PJDR)
PJDR stores output data for port J pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PJ7DR PJ6DR PJ5DR PJ4DR PJ3DR PJ2DR PJ1DR PJ0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
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Section 9 I/O Ports
9.8.3
Port J Register (PORTJ)
PORTJ shows port J pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Bit Name PJ7 PJ6 PJ5 PJ4 PJ3 PJ2 PJ1 PJ0 Initial Value * * * * * * * * R/W R R R R R R R R Description If a port J read is performed while PJDDR bits are set to 1, the PJDR values are read. If a port J read is performed while PADDR bits are cleared to 0, the pin states are read.
Note: * Determined by the states of pins PJ7 to PJ0.
9.8.4
Port J Pull-Up MOS Control Register (PJPCR)
PJPCR controls the input pull-up MOS function for each bit.
Bit 7 6 5 4 3 2 1 0 Bit Name PJ7PCR PJ6PCR PJ5PCR PJ4PCR PJ3PCR PJ2PCR PJ1PCR PJ0PCR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description When a pin is specified as an input port, setting the corresponding bit to 1 turns on the input pull-up MOS for that pin.
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Section 9 I/O Ports
9.8.5
Wakeup Control Register (WPCR)
WPCR controls switching of port J pin functions. For details on interrupt request flags, refer to 5.3.6, Wakeup Interrupt Request Register (IWPR).
Bit 7 6 5 4 3 2 1 0 Bit Name WPC7 WPC6 WPC5 WPC4 WPC3 WPC2 WPC1 WPC0 Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description When these bits are set to 1, the corresponding PJn/WKPn pin becomes the WKPn input pin. When cleared, they become the PJn input/output pin. (n = 7 to 0)
9.8.6
Pin Functions
Port J pins also function as wakeup input pins (WKP7 to WKP0) and LCD driver segment output pins (SEG8 to SEG1). Port J pin functions are shown below. * PJn/WKPn/SEGn + 1 The pin function is switched as shown below according to the combination of the SGS3 to SGS0 bits in LPCR of the LCD driver/controller, WKP7 to WKP0 bits in WPCR, and PJnDDR bit.
SGS3 to SGS0 WPCn PJnDDR Pin functions Legend: X: Don't care Note: n = 7 to 0 0 PJn input pin H8S/2268 Group: B'00XX or B'0100 H8S/2264 Group: B'0000, B'001X, or B'0100 0 1 PJn output pin 1 B'0101
WKPn input pin

SEGn + 1 output pin
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Section 9 I/O Ports
9.8.7
Input Pull-Up MOS Function
Port J has a built-in input pull-up MOS function that can be controlled by software. Input pull-up MOS can be specified as on or off on an individual bit basis. When port J is set to port input and wakeup input, PJDDR is cleared to 0, and then PJPCR is set to 1, the input pull-up MOS is turned on. The input pull-up MOS function is in the off state after a reset, and in hardware standby mode. The prior state is retained in software standby mode. Table 9.2 summarizes the input pull-up MOS states in port J. Table 9.2
Pin States Segment output and port output Port input and wakeup input
Input Pull-Up MOS States (Port J)
Reset OFF Hardware Standby Mode OFF Software Standby Mode OFF ON/OFF In Other Operations OFF ON/OFF
Legend: OFF : Input pull-up MOS is always off. ON/OFF : On when PJDDR = 0 and PJPCR = 1; otherwise off.
9.9
Port K
Port K is an 8-bit I/O port and has the following registers. * Port K data direction register (PKDDR) * Port K data register (PKDR) * Port K register (PORTK)
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Section 9 I/O Ports
9.9.1
Port K Data Direction Register (PKDDR)
PKDDR specifies input or output the port K pins using the individual bits. PKDDR cannot be read; if it is, an undefined value will be read.
Bit 7 6 5 4 3 2 1 0 Bit Name PK7DDR PK6DDR PK5DDR PK4DDR PK3DDR PK2DDR PK1DDR PK0DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port K pin an output port. Clearing this bit to 0 makes the pin an input port.
9.9.2
Port K Data Register (PKDR)
PKDR stores output data for port K pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PK7DR PK6DR PK5DR PK4DR PK3DR PK2DR PK1DR PK0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
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Section 9 I/O Ports
9.9.3
Port K Register (PORTK)
PORTK shows port K pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Bit Name PK7 PK6 PK5 PK4 PK3 PK2 PK1 PK0 Initial Value * * * * * * * * R/W R R R R R R R R Description If a port K read is performed while PKDDR bits are set to 1, the PKDR values are read. If a port K read is performed while PKDDR bits are cleared to 0, the pin states are read.
Note: * Determined by the states of pins PK7 to PK0.
9.9.4
Pin Functions
Port K pins also function as LCD driver segment output pins (SEG16 to SEG9). Port K pin functions are shown below. * PKn/SEGn + 9 The pin function is switched as shown below according to the combination of the SGS3 to SGS0 bits in LPCR of the LCD driver/controller and PKnDDR bit.
SGS3 to SGS0 PKnDDR Pin functions Legend: X: Don't care Note: n = 7 to 0 H8S/2268 Group: B'00XX H8S/2264 Group: B'0000 or B'001X 0 PKn input pin 1 PKn output pin B'010X
SEGn + 9 output pin
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Section 9 I/O Ports
9.10
Port L
Port L is an 8-bit I/O port and has the following registers. * Port L data direction register (PLDDR) * Port L data register (PLDR) * Port L register (PORTL) 9.10.1 Port L Data Direction Register (PLDDR)
PLDDR specifies input or output of the port L pins using the individual bits. PLDDR cannot be read; if it is, an undefined value will be read.
Bit 7 6 5 4 3 2 1 0 Bit Name PL7DDR PL6DDR PL5DDR PL4DDR PL3DDR PL2DDR PL1DDR PL0DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port L pin an output port. Clearing this bit to 0 makes the pin an input port.
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Section 9 I/O Ports
9.10.2
Port L Data Register (PLDR)
PLDR stores output data for port L pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PL7DR PL6DR PL5DR PL4DR PL3DR PL2DR PL1DR PL0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.10.3
Port L Register (PORTL)
PORTL shows port L pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Bit Name PL7 PL6 PL5 PL4 PL3 PL2 PL1 PL0 Initial Value * * * * * * * * R/W R R R R R R R R Description If a port L read is performed while PLDDR bits are set to 1, the PLDR values are read. If a port L read is performed while PLDDR bits are cleared to 0, the pin states are read.
Note: * Determined by the states of pins PL7 to PL0.
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Section 9 I/O Ports
9.10.4
Pin Functions
Port L pins also function as LCD driver segment output pins (SEG24 to SEG17). Port L pin functions are shown below. * PLn/SEGn + 17 The pin function is switched as shown below according to the combination of the SGS3 to SGS0 bits in LPCR of the LCD driver/controller and PLnDDR bit.
SGS3 to SGS0 PLnDDR Pin functions Legend: X: Don't care Note: n = 7 to 0 H8S/2268 Group: B'000X or B'0010 H8S/2264 Group: B'00X0 0 PLn input pin 1 PLn output pin B'0011 or B'010X
SEGn + 17 output pin
9.11
Port M (H8S/2268 Group Only)
Port M is an 8-bit I/O port and has the following registers. * Port M data direction register (PMDDR) * Port M data register (PMDR) * Port M register (PORTM) 9.11.1 Port M Data Direction Register (PMDDR)
PMDDR specifies input or output of the port M pins using the individual bits. PMDDR cannot be read; if it is, an undefined value will be read.
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Section 9 I/O Ports Initial Value 0 0 0 0 0 0 0 0
Bit 7 6 5 4 3 2 1 0
Bit Name PM7DDR PM6DDR PM5DDR PM4DDR PM3DDR PM2DDR PM1DDR PM0DDR
R/W W W W W W W W W
Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port M pin an output port. Clearing this bit to 0 makes the pin an input port.
9.11.2
Port M Data Register (PMDR)
PMDR stores output data for port M pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PM7DR PM6DR PM5DR PM4DR PM3DR PM2DR PM1DR PM0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
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Section 9 I/O Ports
9.11.3
Port M Register (PORTM)
PORTM shows port M pin states.
Bit 7 6 5 4 3 2 1 0 Bit Name PM7 PM6 PM5 PM4 PM3 PM2 PM1 PM0 Initial Value * * * * * * * * R/W R R R R R R R R Description If a port M read is performed while PMDDR bits are set to 1, the PMDR values are read. If a port M read is performed while PMDDR bits are cleared to 0, the pin states are read.
Note: * Determined by the states of pins PM7 to PM0.
9.11.4
Pin Functions
Port M pins also function as LCD driver segment output pins (SEG32 to SEG25). Port M pin functions are shown below. * PMn/SEGn + 25 The pin function is switched as shown below according to the combination of the SGS3 to SGS0 bits in LPCR of the LCD driver/controller and PMnDDR bit.
SGS3 to SGS0 PMnDDR Pin functions Legend: X: Don't care Note: n = 7 to 0 0 PMn input pin B'000X 1 PMn output pin B'001X or B'010X
SEGn + 25 output pin
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Section 9 I/O Ports
9.12
Port N (H8S/2268 Group Only)
Port N is an 8-bit I/O port and has the following registers. * Port N data direction register (PNDDR) * Port N data register (PNDR) * Port N register (PORTN) 9.12.1 Port N Data Direction Register (PNDDR)
PNDDR specifies input or output of the port N pins using the individual bits. PNDDR cannot be read; if it is, an undefined value will be read.
Bit 7 6 5 4 3 2 1 0 Bit Name PN7DDR PN6DDR PN5DDR PN4DDR PN3DDR PN2DDR PN1DDR PN0DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port N pin an output port. Clearing this bit to 0 makes the pin an input port.
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Section 9 I/O Ports
9.12.2
Port N Data Register (PNDR)
PNDR stores output data for port N pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PN7DR PN6DR PN5DR PN4DR PN3DR PN2DR PN1DR PN0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.12.3
Port N Register (PORTN)
PORTN shows port N pin states.
Bit 7 6 5 4 3 2 1 0 Bit Name PN7 PN6 PN5 PN4 PN3 PN2 PN1 PN0 Initial Value * * * * * * * * R/W R R R R R R R R Description If a port N read is performed while PNDDR bits are set to 1, the PNDR values are read. If a port N read is performed while PNDDR bits are cleared to 0, the pin states are read.
Note: * Determined by the states of pins PN7 to PN0.
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Section 9 I/O Ports
9.12.4
Pin Functions
Port N pins also function as LCD driver segment output pins (SEG40 to SEG33). Port N pin functions are shown below. * PNn/SEGn + 33 The pin function is switched as shown below according to the combination of the SGS3 to SGS0 bits in LPCR of the LCD driver/contoller and PNnDDR bit.
SGS3 to SGS0 PNnDDR Pin functions Legend: X: Don't care Note: n = 7 to 0 0 PNn input pin B'0000 1 PNn output pin B'0001, B'001X, or B'010X
SEGn + 33 output pin
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Section 9 I/O Ports
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Section 10 16-Bit Timer Pulse Unit (TPU)
Section 10 16-Bit Timer Pulse Unit (TPU)
The H8S/2268 Group has an on-chip 16-bit timer pulse unit (TPU) comprised of three 16-bit timer channels, and the H8S/2264 Group has the TPU comprised of two 16-bit timer channels. The function list of the TPU is shown in table 10.1. A block diagram of the TPU for the H8S/2268 Group and that for the H8S/2264 Group are shown figures 10.1 and 10.2, respectively.
10.1
Features
* Maximum 8-pulse input/output (H8S/2268 Group) * Maximum 4-pulse input/output (H8S/2264 Group) * Selection of 7 or 8 counter input clocks for each channel * The following operations can be set for each channel: Waveform output at compare match Input capture function Counter clear operation Synchronous operation: Multiple timer counters (TCNT) can be written to simultaneously Simultaneous clearing by compare match and input capture is possible Register simultaneous input/output is possible by synchronous counter operation PWM output with any duty level is possible A maximum 7-phase (H8S/2268 Group)/3-phase (H8S/2264 Group) PWM output is possible in combination with synchronous operation * Buffer operation settable for channel 0 (H8S/2268 Group only) * Phase counting mode settable independently for each of channels 1 and 2 (H8S/2268 Group only) * Fast access via internal 16-bit bus * 13-type interrupt sources (H8S/2268 Group) * 6-type interrupt sources (H8S/2264 Group) * Register data can be transmitted automatically * A/D converter conversion start trigger can be generated * Module stop mode can be set
TIMTPU3B_000020030700
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.1 TPU Functions
Item Count clock Channel 0* /1 /4 /16 /64 TCLKA TCLKB TCLKC TCLKD TGRA_0 TGRB_0 TGRC_0 TGRD_0 TIOCA0 TIOCB0 TIOCC0 TIOCD0
1
Channel 1 /1 /4 /16 /64 /256 TCLKA TCLKB TGRA_1 TGRB_1 TIOCA1 TIOCB1
Channel 2 /1 /4 /16 /64 /1024 TCLKA TCLKB TCLKC TGRA_2 TGRB_2 TIOCA2 TIOCB2
General registers (TGR) General registers/ 1 buffer registers* I/O pins
Counter clear function Compare match output 0 output 1 output Toggle output
TGR compare match or TGR compare match or TGR compare match or input capture input capture input capture
Input capture function Synchronous operation PWM mode Phase counting 1 mode* Buffer operation* 1 DTC activation*
1
TGR compare match or input capture TGRA_0 compare match or input capture TGR compare match or input capture TGRA_1 compare match or input capture TGR compare match or input capture TGRA_2 compare match or input capture
A/D converter trigger
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Section 10 16-Bit Timer Pulse Unit (TPU) Item Interrupt sources Channel 0* 5 sources * Compare match or input capture 0A * Compare match or input capture 0B * Compare match or input capture 0C * Compare match or input capture 0D * Overflow Legend: : Possible : Not possible Notes: 1. Supported only by the H8S/2268 Group. 2. Supported only by the H8S/2264 Group.
1
Channel 1
1 4 sources*
Channel 2
2
3 sources*
4 sources* 2 3 sources*
1
* Compare match or input * Compare match or capture 1A input capture 2A * Compare match or input capture 1B * Overflow
1 * Underflow*
* Compare match or input capture 2B * Overflow
1 * Underflow*
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Section 10 16-Bit Timer Pulse Unit (TPU)
Clock input Internal clock:
/1 /4 /16 /64 /256 /1024 TCLKA TCLKB TCLKC TCLKD
TSYR
Control logic
Internal data bus
Common
Bus interface
External clock:
TMDR
Channel 2
TSR
TSTR
A/D convertion start request signal
TGRA
TIOR
TIER
TCR
Input/output pins Channel 0:
TIOCA0 TIOCB0 TIOCC0 TIOCD0 TIOCA1 TIOCB1 TIOCA2 TIOCB2
Module data bus
TGRB
TCNT
Channel 2:
TIORH TIORL
TMDR
Channel 0
TSR
TIER
TCR
Channel 1:
Interrupt request signals Channel 0: TGI0A TGI0B TGI0C TGI0D TCI0V Channel 1: TGI1A TGI1B TCI1V TCI1U Channel 2: TGI2A TGI2B TCI2V TCI2U
TMDR
Control logic for channel 0 to 2
Channel 1
TSR
TGRA
TIOR
TGRB TGRC TGRD TGRB
TCNT TCNT
Legend: TSTR: Timer start register TSYR: Timer synchro register TCR: Timer control register TMDR: Timer mode register
TIOR(H, L): TIER: TSR: TGR(A, B, C, D):
Timer I/O control registers (H, L) Timer interrupt enable register Timer status register TImer general registers (A, B, C, D)
Figure 10.1 Block Diagram of TPU for H8S/2268 Group
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TIER
TCR
TGRA
Section 10 16-Bit Timer Pulse Unit (TPU)
Clock input Internal clock:
/1 /4 /16 /64 /256 /1024 TCLKA TCLKB TCLKC
TSYR
Control logic
Internal data bus
Bus interface
Common
External clock:
TMDR
Channel 2
TSR
TSTR
A/D convertion start request signal
TGRA
TIOR
TIER
TCR
Control logic for channel 1 to 2
Module data bus
TGRB
TCNT
Input/output pins Channel 1: Channel 2:
TIOCA1 TIOCB1 TIOCA2 TIOCB2
Interrupt request signals Channel 1: TGI1A TGI1B TCI1V TCI1U Channel 2: TGI2A TGI2B TCI2V TCI2U
TMDR
Channel 1
TSR
TGRA
TIOR
Legend: TSTR: Timer start register TSYR: Timer synchro register TCR: Timer control register TMDR: Timer mode register
TIOR: TIER: TSR: TGR(A, B):
Timer I/O control registers Timer interrupt enable register Timer status register TImer general registers (A, B)
Figure 10.2 Block Diagram of TPU for H8S/2264 Group
TIER
TCR
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TGRB
TCNT
Section 10 16-Bit Timer Pulse Unit (TPU)
10.2
Input/Output Pins
Table 10.2 TPU Pins
Channel Symbol All TCLKA TCLKB TCLKC TCLKD* 0* TIOCA0 TIOCB0 TIOCC0 TIOCD0 1 2 TIOCA1 TIOCB1 TIOCA2 TIOCB2 I/O Input Input Input Input I/O I/O I/O I/O I/O I/O I/O I/O Function External clock A input pin (Channel 1 phase counting mode A phase input*) External clock B input pin (Channel 1 phase counting mode B phase input*) External clock C input pin (Channel 2 phase counting mode A phase input*) External clock D input pin (Channel 2 phase counting mode B phase input*) TGRA_0 input capture input/output compare output/PWM output pin TGRB_0 input capture input/output compare output/PWM output pin TGRC_0 input capture input/output compare output/PWM output pin TGRD_0 input capture input/output compare output/PWM output pin TGRA_1 input capture input/output compare output/PWM output pin TGRB_1 input capture input/output compare output/PWM output pin TGRA_2 input capture input/output compare output/PWM output pin TGRB_2 input capture input/output compare output/PWM output pin
Note: * Supported only by the H8S/2268 Group.
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3
Register Descriptions
The TPU has the following registers. To distinguish registers in each channel, an underscore and the channel number are added as a suffix to the register name; TCR for channel 0 is expressed as TCR_0. * Timer control register_0 (TCR_0)* * Timer mode register_0 (TMDR_0)* * Timer I/O control register H_0 (TIORH_0)* * Timer I/O control register L_0 (TIORL_0)* * Timer interrupt enable register_0 (TIER_0)* * Timer status register_0 (TSR_0)* * Timer counter_0 (TCNT_0)* * Timer general register A_0 (TGRA_0)* * Timer general register B_0 (TGRB_0)* * Timer general register C_0 (TGRC_0)* * Timer general register D_0 (TGRD_0)* * Timer control register_1 (TCR_1) * Timer mode register_1 (TMDR_1) * Timer I/O control register _1 (TIOR_1) * Timer interrupt enable register_1 (TIER_1) * Timer status register_1 (TSR_1) * Timer counter_1 (TCNT_1) * Timer general register A_1 (TGRA_1) * Timer general register B_1 (TGRB_1) * Timer control register_2 (TCR_2) * Timer mode register_2 (TMDR_2) * Timer I/O control register_2 (TIOR_2) * Timer interrupt enable register_2 (TIER_2) * Timer status register_2 (TSR_2) * Timer counter_2 (TCNT_2) * Timer general register A_2 (TGRA_2) * Timer general register B_2 (TGRB_2)
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Section 10 16-Bit Timer Pulse Unit (TPU)
Common Registers * Timer start register (TSTR) * Timer synchro register (TSYR) Note: * Supported only by the H8S/2268 Group. 10.3.1 Timer Control Register (TCR)
The TCR registers control the TCNT operation for each channel. The H8S/2268 Group TPU has a total of three TCR registers and the H8S/2264 Group TPU has a total of two TCR registers, one for each channel (channels 0 to 2, or 1 and 2). TCR register settings should be conducted only when TCNT operation is stopped.
Bit 7 6 5 4 3 Bit Name CCLR2 CCLR1 CCLR0 CKEG1 CKEG0 Initial value 0 0 0 0 0 R/W R/W R/W R/W R/W R/W Description Counter Clear 0 to 2 These bits select the TCNT counter clearing source. See tables 10.3 and 10.4 for details. Clock Edge 0 and 1 These bits select the input clock edge. When the input clock is counted using both edges, the input clock period is halved (e.g. /4 both edges = /2 rising edge). Internal clock edge selection is valid when the input clock is /4 or slower. If the input clock is 1, this setting is ignored and count at rising edge is selected. In the H8S/2268 Group, if phase counting mode is used on channels 1 and 2, this setting is ignored and the phase counting mode setting has priority. 00: Count at rising edge 01: Count at falling edge 1X: Count at both edges Legend: X: Don't care 2 1 0 TPSC2 TPSC1 TPSC0 0 0 0 R/W R/W R/W Time Prescaler 0 to 2 These bits select the TCNT counter clock. The clock source can be selected independently for each channel. See tables10.5 to10.7 for details.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.3 CCLR0 to CCLR2 (Channel 0) (H8S/2268 Group Only)
Channel 0 Bit 7 CCLR2 0 Bit 6 CCLR1 0 Bit 5 CCLR0 0 1 1 0 1 Description TCNT clearing disabled TCNT cleared by TGRA compare match/input capture TCNT cleared by TGRB compare match/input capture TCNT cleared by counter clearing for another channel performing synchronous clearing/ 1 synchronous operation* TCNT clearing disabled TCNT cleared by TGRC compare match/input 2 capture* TCNT cleared by TGRD compare match/input 2 capture* TCNT cleared by counter clearing for another channel performing synchronous clearing/ 1 synchronous operation*
1
0
0 1
1
0 1
Notes: 1. Synchronous operation is set by setting the SYNC bit in TSYR to 1. 2. When TGRC or TGRD is used as a buffer register, TCNT is not cleared because the buffer register setting has priority, and compare match/input capture does not occur.
Table 10.4 CCLR0 to CCLR2 (Channels 1 and 2)
Channel 1, 2 Bit 7 Bit 6 2 Reserved* CCLR1 0 0 Bit 5 CCLR0 0 1 1 0 1 Description TCNT clearing disabled TCNT cleared by TGRA compare match/input capture TCNT cleared by TGRB compare match/input capture TCNT cleared by counter clearing for another channel performing synchronous clearing/ 1 synchronous operation*
Notes: 1. Synchronous operation is selected by setting the SYNC bit in TSYR to 1. 2. Bit 7 is reserved in channels 1 and 2. It is always read as 0 and cannot be modified.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.5 TPSC0 to TPSC2 (Channel 0) (H8S/2268 Group Only)
Channel 0 Bit 2 TPSC2 0 Bit 1 TPSC1 0 1 1 0 1 Bit 0 TPSC0 0 1 0 1 0 1 0 1 Description Internal clock: counts on /1 Internal clock: counts on /4 Internal clock: counts on /16 Internal clock: counts on /64 External clock: counts on TCLKA pin input External clock: counts on TCLKB pin input External clock: counts on TCLKC pin input External clock: counts on TCLKD pin input
Table 10.6 TPSC0 to TPSC2 (Channel 1)
Channel 1 Bit 2 TPSC2 0 Bit 1 TPSC1 0 1 1 0 1 Bit 0 TPSC0 0 1 0 1 0 1 0 1 Description Internal clock: counts on /1 Internal clock: counts on /4 Internal clock: counts on /16 Internal clock: counts on /64 External clock: counts on TCLKA pin input External clock: counts on TCLKB pin input Internal clock: counts on /256 Setting prohibited
Note: * This setting is ignored when channel 1 is in phase counting mode (H8S/2268 Group only).
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.7 TPSC0 to TPSC2 (Channel 2)
Channel 2 Bit 2 TPSC2 0 Bit 1 TPSC1 0 1 1 0 1 Bit 0 TPSC0 0 1 0 1 0 1 0 1 Description Internal clock: counts on /1 Internal clock: counts on /4 Internal clock: counts on /16 Internal clock: counts on /64 External clock: counts on TCLKA pin input External clock: counts on TCLKB pin input External clock: counts on TCLKC pin input Internal clock: counts on /1024
Note: * This setting is ignored when channel 2 is in phase counting mode (H8S/2268 Group only).
10.3.2
Timer Mode Register (TMDR)
The TMDR registers are used to set the operating mode of each channel. The H8S/2268 Group TPU has three TMDR registers and the H8S/2264 Group TPU has two TMDR registers, one for each channel (channels 0 to 2, or 1 and 2). TMDR register settings should be changed only when TCNT operation is stopped.
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Section 10 16-Bit Timer Pulse Unit (TPU) Initial value All 1 0
Bit 7, 6 5
Bit Name BFB
R/W R/W
Description Reserved These bits are always read as 1 and cannot be modified. H8S/2268 Group: Buffer Operation B Specifies whether TGRB is to operate in the normal way, or TGRB and TGRD are to be used together for buffer operation. When TGRD is used as a buffer register, TGRD input capture/output compare is not generated. In channels 1 and 2, which have no TGRD, bit 5 is reserved. It is always read as 0 and cannot be modified. 0: TGRB operates normally 1: TGRB and TGRD used together for buffer operation H8S/2264 Group: Reserved These bits are always read as 0 and cannot be modified.
4
BFA
0
R/W
H8S/2268 Group: Buffer Operation A Specifies whether TGRA is to operate in the normal way, or TGRA and TGRC are to be used together for buffer operation. When TGRC is used as a buffer register, TGRC input capture/output compare is not generated. In channels 1 and 2, which have no TGRC, bit 4 is reserved. It is always read as 0 and cannot be modified. 0: TGRA operates normally 1:TGRA and TGRC used together for buffer operation H8S/2264 Group: Reserved These bits are always read as 0 and cannot be modified.
3 2 1 0
MD3 MD2 MD1 MD0
0 0 0 0
R/W R/W R/W R/W
Modes 0 to 3 These bits are used to set the timer operating mode. MD3 is a reserved bit. In a write, it should always be written with 0. See table 10.8 for details.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.8 MD0 to MD3
Bit 3 1 MD3* 0 Bit 2 2 MD2* 0 Bit 1 MD1 0 1 1 0 1 1 X X Bit 0 MD0 0 1 0 1 0 1 0 1 X Description Normal operation Reserved PWM mode 1 PWM mode 2 Phase counting mode 1 Phase counting mode 2 Phase counting mode 3 Phase counting mode 4
Legend: X: Don't care Notes: 1. MD3 is a reserved bit. In a write, it should always be written with 0. 2. Phase counting mode cannot be set in the H8S/2264 Group or for channels 0 in the H8S/2268 Group. In this case, 0 should always be written to MD2.
10.3.3
Timer I/O Control Register (TIOR)
The TIOR registers control the TGR registers. The H8S/2268 Group TPU has four TIOR registers and the H8S/2264 Group TPU has two TIOR registers, two for channel 0, and one each for channels 1 and 2. Care is required as TIOR is affected by the TMDR setting. The initial output specified by TIOR is valid when the counter is stopped (the CST bit in TSTR is cleared to 0). Note also that, in PWM mode 2, the output at the point at which the counter is cleared to 0 is specified. In the H8S/2268 Group, when TGRC or TGRD is designated for buffer operation, this setting is invalid and the register operates as a buffer register.
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Section 10 16-Bit Timer Pulse Unit (TPU)
* TIORH_0 (H8S/2268 Group only), TIOR_1, TIOR_2
Bit 7 6 5 4 3 2 1 0 Bit Name IOB3 IOB2 IOB1 IOB0 IOA3 IOA2 IOA1 IOA0 All 0 R/W I/O Control A0 to A3 Specify the function of TGRA. For details, refer to table 10.13, 10.15, and 10.16. Initial value All 0 R/W R/W Description I/O Control B0 to B3 Specify the function of TGRB. For details, refer to table 10.9, 10.11, and 10.12.
* TIORL_0 (H8S/2268 Group only)
Bit 7 6 5 4 3 2 1 0 Bit Name IOD3 IOD2 IOD1 IOD0 IOC3 IOC2 IOC1 IOC0 All 0 R/W I/O Control C0 to C3 Specify the function of TGRC. For details, refer to table 10.14. Initial value All 0 R/W R/W Description I/O Control D0 to D3 Specify the function of TGRD. For details, refer to table 10.10.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.9 TIORH_0 (Channel 0) (H8S/2268 Group Only)
Description Bit 7 IOB3 0 Bit 6 IOB2 0 Bit 5 IOB1 0 Bit 4 IOB0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 Legend: X: Don't care X X X Input capture register TGRB_0 Function Output compare register TIOCB0 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Capture input source is TIOCB0 pin Input capture at rising edge Capture input source is TIOCB0 pin Input capture at falling edge Capture input source is TIOCB0 pin Input capture at both edges Setting disabled
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.10 TIORL_0 (Channel 0) (H8S/2268 Group Only)
Description Bit 7 IOD3 0 Bit 6 IOD2 0 Bit 5 IOD1 0 Bit 4 IOD0 0 1 1 0 1 1 0 0 1 TGRD_0 Function Output compare register* TIOCD0 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1
0 output at compare match
1 0 1 1 0 0 0 1 1 1 X X X Input capture register* Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Capture input source is TIOCD0 pin Input capture at rising edge Capture input source is TIOCD0 pin Input capture at falling edge Capture input source is TIOCD0 pin Input capture at both edges Setting disabled Legend: X: Don't care Note: * When the BFB bit in TMDR_0 is set to 1 and TGRD_0 is used as a buffer register, this setting is invalid and input capture/output compare is not generated.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.11 TIOR_1 (Channel 1)
Description Bit 7 IOB3 0 Bit 6 IOB2 0 Bit 5 IOB1 0 Bit 4 IOB0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 Legend: X: Don't care X X X Input capture register TGRB_1 Function Output compare register TIOCB1 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Capture input source is TIOCB1 pin Input capture at rising edge Capture input source is TIOCB1 pin Input capture at falling edge Capture input source is TIOCB1 pin Input capture at both edges Setting disabled
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.12 TIOR_2 (Channel 2)
Description Bit 7 IOB3 0 Bit 6 IOB2 0 Bit 5 IOB1 0 Bit 4 IOB0 0 1 1 0 1 1 0 0 1 1 0 1 1 X 0 0 1 1 Legend: X: Don't care X Input capture register TGRB_2 Function Output compare register TIOCB2 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Capture input source is TIOCB2 pin Input capture at rising edge Capture input source is TIOCB2 pin Input capture at falling edge Capture input source is TIOCB2 pin Input capture at both edges
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.13 TIORH_0 (Channel 0) (H8S/2268 Group Only)
Description Bit 3 IOA3 0 Bit 2 IOA2 0 Bit 1 IOA1 0 Bit 0 IOA0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 Legend: X: Don't care X X X Input capture register TGRA_0 Function Output compare register TIOCA0 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Capture input source is TIOCA0 pin Input capture at rising edge Capture input source is TIOCA0 pin Input capture at falling edge Capture input source is TIOCA0 pin Input capture at both edges Setting disabled
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.14 TIORL_0 (Channel 0) (H8S/2268 Group Only)
Description Bit 3 IOC3 0 Bit 2 IOC2 0 Bit 1 IOC1 0 Bit 0 IOC0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X Input capture register* TGRC_0 Function Output compare register* TIOCC0 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Capture input source is TIOCC0 pin Input capture at rising edge Capture input source is TIOCC0 pin Input capture at falling edge Capture input source is TIOCC0 pin Input capture at both edges Setting disabled Legend: X: Don't care Note: * When the BFA bit in TMDR_0 is set to 1 and TGRC_0 is used as a buffer register, this setting is invalid and input capture/output compare is not generated.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.15 TIOR_1 (Channel 1)
Description Bit 3 IOA3 0 Bit 2 IOA2 0 Bit 1 IOA1 0 Bit 0 IOA0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 Legend: X Don't care X X X Input capture register TGRA_1 Function Output compare register TIOCA1 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Capture input source is TIOCA1 pin Input capture at rising edge Capture input source is TIOCA1 pin Input capture at falling edge Capture input source is TIOCA1 pin Input capture at both edges Setting disabled
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.16 TIOR_2 (Channel 2)
Description Bit 3 IOA3 0 Bit 2 IOA2 0 Bit 1 IOA1 0 Bit 0 IOA0 0 1 1 0 1 1 0 0 1 1 0 1 1 X 0 0 1 1 Legend: X: Don't care X Input capture register TGRA_2 Function Output compare register TIOCA2 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Capture input source is TIOCA2 pin Input capture at rising edge Capture input source is TIOCA2 pin Input capture at falling edge Capture input source is TIOCA2 pin Input capture at both edges
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3.4
Timer Interrupt Enable Register (TIER)
The TIER registers control enabling or disabling of interrupt requests for each channel. The H8S/2268 Group TPU has three TIER registers and the H8S/2264 Group TPU has two TIER registers, one for each channel (channels 0 to 2, or 1 and 2).
Bit 7 Bit Name TTGE Initial value 0 R/W R/W Description A/D Conversion Start Request Enable Enables or disables generation of A/D conversion start requests by TGRA input capture/compare match. 0: A/D conversion start request generation disabled 1: A/D conversion start request generation enabled 6 5 TCIEU 1 0 R/W Reserved This bit is always read as 1 and cannot be modified. H8S/2268 Group: Underflow Interrupt Enable Enables or disables interrupt requests (TCIU) by the TCFU flag when the TCFU flag in TSR is set to 1 in channels 1 and 2. In channel 0, bit 5 is reserved. It is always read as 0 and cannot be modified. 0: Interrupt requests (TCIU) by TCFU disabled 1: Interrupt requests (TCIU) by TCFU enabled H8S/2264 Group: The write value should always be 0. 4 TCIEV 0 R/W Overflow Interrupt Enable Enables or disables interrupt requests (TCIV) by the TCFV flag when the TCFV flag in TSR is set to 1. 0: Interrupt requests (TCIV) by TCFV disabled 1: Interrupt requests (TCIV) by TCFV enabled
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Section 10 16-Bit Timer Pulse Unit (TPU) Initial value 0
Bit 3
Bit Name TGIED
R/W R/W
Description TGR Interrupt Enable D Enables or disables interrupt requests (TGID) by the TGFD bit when the TGFD bit in TSR is set to 1 in channel 0. In channels 1 and 2, bit 3 is reserved. It is always read as 0 and cannot be modified. 0: Interrupt requests (TGID) by TGFD bit disabled 1: Interrupt requests (TGID) by TGFD bit enabled
2
TGIEC
0
R/W
TGR Interrupt Enable C Enables or disables interrupt requests (TGIC) by the TGFC bit when the TGFC bit in TSR is set to 1 in channel 0. In channels 1 and 2, bit 2 is reserved. It is always read as 0 and cannot be modified. 0: Interrupt requests (TGIC) by TGFC bit disabled 1: Interrupt requests (TGIC) by TGFC bit enabled
1
TGIEB
0
R/W
TGR Interrupt Enable B Enables or disables interrupt requests (TGIB) by the TGFB bit when the TGFB bit in TSR is set to 1. 0: Interrupt requests (TGIB) by TGFB bit disabled 1: Interrupt requests (TGIB) by TGFB bit enabled
0
TGIEA
0
R/W
TGR Interrupt Enable A Enables or disables interrupt requests (TGIA) by the TGFA bit when the TGFA bit in TSR is set to 1. 0: Interrupt requests (TGIA) by TGFA bit disabled 1: Interrupt requests (TGIA) by TGFA bit enabled
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3.5
Timer Status Register (TSR)
The TSR registers indicate the status of each channel. The H8S/2268 Group TPU has three TSR registers and the H8S/2264 Group TPU has two TSR registers, one for each channel (channels 0 to 2, or 1 and 2).
Bit 7 Bit Name TCFD Initial value 1 R/W R Description H8S/2268 Group: Count Direction Flag Status flag that shows the direction in which TCNT counts in channels 1 and 2. In channel 0, bit 7 is reserved. It is always read as 1 and cannot be modified. 0: TCNT counts down 1: TCNT counts up H8S/2264 Group: Reserved This bit is always read as 1 and cannot be modified. 6 5 TCFU 1 0 Reserved This bit is always read as 1 and cannot be modified. *1 H8S/2268 Group: R/(W) Underflow Flag Status flag that indicates that TCNT underflow has occurred when channels 1 and 2 are set to phase counting mode. Only 0 can be written, for flag clearing. In channel 0, bit 5 is reserved. It is always read as 0 and cannot be modified. [Setting condition] When the TCNT value underflows (changes from H'0000 to H'FFFF) [Clearing condition] When 0 is written to TCFU after reading TCFU = 1 H8S/2264 Group: Reserved This bit is always read as 0 and cannot be modified.
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Section 10 16-Bit Timer Pulse Unit (TPU) Initial value 0
Bit 4
Bit Name TCFV
R/W R/(W) *1
Description Overflow Flag Status flag that indicates that TCNT overflow has occurred. Only 0 can be written, for flag clearing. [Setting condition] When the TCNT value overflows (changes from H'FFFF to H'0000 ) [Clearing condition] When 0 is written to TCFV after reading TCFV = 1
3
TGFD
0
R/(W)* H8S/2268 Group:
1
Input Capture/Output Compare Flag D Status flag that indicates the occurrence of TGRD input capture or compare match in channel 0. Only 0 can be written, for flag clearing. In channels 1 and 2, bit 3 is reserved. It is always read as 0 and cannot be modified. [Setting conditions] * * When TCNT = TGRD and TGRD is functioning as output compare register When TCNT value is transferred to TGRD by input capture signal and TGRD is functioning as input capture register When DTC is activated by TGID interrupt and the DISEL bit of MRB in DTC is 0 with the transfer counter other than 0 When 0 is written to TGFD after reading TGFD = 1
[Clearing conditions] *
*
H8S/2264 Group: Reserved This bit is always read as 0 and cannot be modified.
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Section 10 16-Bit Timer Pulse Unit (TPU) Initial value 0
Bit 2
Bit Name TGFC
R/W R/(W) *1
Description H8S/2268 Group: Input Capture/Output Compare Flag C Status flag that indicates the occurrence of TGRC input capture or compare match in channel 0. Only 0 can be written, for flag clearing. In channels 1 and 2, bit 2 is reserved. It is always read as 0 and cannot be modified. [Setting conditions] * * When TCNT = TGRC and TGRC is functioning as output compare register When TCNT value is transferred to TGRC by input capture signal and TGRC is functioning as input capture register When DTC is activated by TGIC interrupt and the DISEL bit of MRB in DTC is 0 with the transfer counter other than 0 When 0 is written to TGFC after reading TGFC = 1
[Clearing conditions] *
*
H8S/2264 Group: Reserved This bit is always read as 0 and cannot be modified.
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Section 10 16-Bit Timer Pulse Unit (TPU) Initial value 0
Bit 1
Bit Name TGFB
R/W R/(W) *1
Description Input Capture/Output Compare Flag B Status flag that indicates the occurrence of TGRB input capture or compare match. Only 0 can be written, for flag clearing. [Setting conditions] * * When TCNT = TGRB and TGRB is functioning as output compare register When TCNT value is transferred to TGRB by input capture signal and TGRB is functioning as input capture register When DTC* is activated by TGIB interrupt and the 2 DISEL bit of MRB in DTC* is 0 with the transfer counter other than 0
2
[Clearing conditions] *
* 0 TGFA 0 R/(W) *1
When 0 is written to TGFB after reading TGFB = 1
Input Capture/Output Compare Flag A Status flag that indicates the occurrence of TGRA input capture or compare match. Only 0 can be written, for flag clearing. [Setting conditions] * * When TCNT = TGRA and TGRA is functioning as output compare register When TCNT value is transferred to TGRA by input capture signal and TGRA is functioning as input capture register When DTC* is activated by TGIA interrupt and the 2 DISEL bit of MRB in DTC* is 0 with the transfer counter other than 0
2
[Clearing conditions] *
*
When 0 is written to TGFA after reading TGFA = 1
Notes: 1. Only 0 can be written to this bit to clear the flag. 2. Supported only by the H8S/2268 Group.
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3.6
Timer Counter (TCNT)
The TCNT registers are 16-bit readable/writable counters. The H8S/2268 Group TPU has three TCNT counters and the H8S/2264 Group TPU has two TCNT counters, one for each channel (H8S/2268 Group: channels 0 to 2, H8S/2264 Group: channels 1and 2). The TCNT counters are initialized to H'0000 by a reset, or in hardware standby mode. The TCNT counters cannot be accessed in 8-bit units; they must always be accessed as a 16-bit unit. 10.3.7 Timer General Register (TGR)
The TGR registers are dual function 16-bit readable/writable registers, functioning as either output compare or input capture registers. The H8S/2268 Group TPU has eight TGR registers and the H8S/2264 Group TPU has four TGR registers, four for channel 0 and two each for channels 1 and 2. TGR is initialized to H'FFFF at reset or in hardware standby mode. The TGR registers cannot be accessed in 8-bit units; they must always be accessed as a 16-bit unit. In the H8S/2268 Group, TGRC and TGRD for channel 0 can also be designated for operation as buffer registers. TGR buffer register combinations are TGRATGRC and TGRBTGRD.
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3.8
Timer Start Register (TSTR)
TSTR selects operation/stoppage for channels 0 to 2 in the H8S/2268 Group and for channels 1 and 2 in the H8S/2264 Group. When setting the operating mode in TMDR or setting the count clock in TCR, first stop the TCNT counter.
Bit 7 to 3 2 1 0 Bit Name CST2 CST1 CST0* Initial value All 0 0 0 0 R/W R/W R/W R/W Description Reserved The write value should always be 0. Counter Start 0 to 2 (CST0 to CST2) These bits select operation or stoppage for TCNT. If 0 is written to the CST bit during operation with the TIOC pin designated for output, the counter stops but the TIOC pin output compare output level is retained. If TIOR is written to when the CST bit is cleared to 0, the pin output level will be changed to the set initial output value. 0: TCNT_n count operation is stopped 1: TCNT_n performs count operation (n = 0 to 2) Note: * In the H8S/2264 Group, this bit is reserved. The write value should always be 0.
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3.9
Timer Synchro Register (TSYR)
TSYR selects independent operation or synchronous operation of the TCNT counters for channels 0 to 2 in the H8S/2268 Group and for channels 1 and 2 in the H8S/2264 Group. A channel performs synchronous operation when the corresponding bit in TSYR is set to 1.
Bit 7 to 3 2 1 0 Bit Name SYNC2 SYNC1 SYNC0 * Initial value 0 0 0 0 R/W R/W R/W R/W Description Reserved The write value should always be 0. Timer Synchro 0 to 2 These bits are used to select whether operation is independent of or synchronized with other channels. When synchronous operation is selected, the TCNT synchronous presetting of multiple channels, and synchronous clearing by counter clearing on another channel, are possible. To set synchronous operation, the SYNC bits for at least two channels must be set to 1. To set synchronous clearing, in addition to the SYNC bit , the TCNT clearing source must also be set by means of bits CCLR0 to CCLR2 in TCR. 0: TCNT_n operates independently (TCNT presetting/ clearing is unrelated to other channels) 1: TCNT_n performs synchronous operation TCNT synchronous presetting/synchronous clearing is possible (n = 0 to 2) Note: * In the H8S/2264 Group, this bit is reserved. The write value should always be 0.
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.4
10.4.1
Interface to Bus Master
16-Bit Registers
TCNT and TGR are 16-bit registers. As the data bus to the master is 16 bits wide, these registers can be read or written to in 8-bit units; 16-bit access must always be used. An example of 16-bit register access operation is shown in figure 10.3.
Internal data bus H
Bus master
L
Bus interface
Module data bus
TCNTH
TCNTL
Figure 10.3 16-Bit Register Access Operation [Bus Master TCNT (16 Bits)] 10.4.2 8-Bit Registers
Registers other than TCNT and TGR are 8-bit. As the data bus to the CPU is 16 bits wide, these registers can be read and written to in 16-bit units. They can also be read and written to in 8-bit units. Examples of 8-bit register access operation are shown in figure 10.4, 10.5, and 10.6.
Internal data bus H
Bus master
L
Bus interface
Module data bus
TCR
Figure 10.4 8-Bit Register Access Operation [Bus Master TCR (Upper 8 Bits)]
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Section 10 16-Bit Timer Pulse Unit (TPU)
Internal data bus H
Bus master
L
Bus interface
Module data bus
TMDR
Figure 10.5 8-Bit Register Access Operation [Bus Master TMDR (Lower 8 Bits)]
Internal data bus H
Bus master
L
Bus interface
Module data bus
TCR
TMDR
Figure 10.6 8-Bit Register Access Operation [Bus Master TCR and TMDR (16 Bits)]
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.5
10.5.1
Operation
Basic Functions
Each channel has a TCNT and TGR register. TCNT performs up-counting, and is also capable of free-running operation, synchronous counting, and external event counting. Each TGR can be used as an input capture register or output compare register. Counter Operation: When one of bits CST0 to CST2 in the H8S/2268 Group or one of bits CST1 and CST2 in the H8S/2264 Group is set to 1 in TSTR, the TCNT counter for the corresponding channel begins counting. TCNT can operate as a free-running counter, periodic counter, for example. 1. Example of count operation setting procedure Figure 10.7 shows an example of the count operation setting procedure.
Operation selection [1] Select the counter clock with bits TPSC2 to TPSC0 in TCR. At the same time, select the input clock edge with bits CKEG1 and CKEG0 in TCR. [2] For periodic counter operation, select the TGR to be used as the TCNT clearing source with bits CCLR2 to CCLR0* in TCR. [3] Designate the TGR selected in [2] as an output compare register by means of TIOR. [4] Set the periodic counter cycle in the TGR selected in [2]. [5] Set the CST bit in TSTR to 1 to start the counter operation. Note: * In the H8S/2264 Group, bits CCLR1 and CCLR0 in TCR.
Select counter clock
[1]
Periodic counter
Free-running counter
Select counter clearing source
[2]
[3] Select output compare register
Set period
[4]
Start count operation
[5]
Start count operation
Figure 10.7 Example of Counter Operation Setting Procedure
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Section 10 16-Bit Timer Pulse Unit (TPU)
2. Free-running count operation and periodic count operation Immediately after a reset, the TPU's TCNT counters are all designated as free-running counters. When the relevant bit in TSTR is set to 1 the corresponding TCNT counter starts upcount operation as a free-running counter. When TCNT overflows (from H'FFFF to H'0000), the TCFV bit in TSR is set to 1. If the value of the corresponding TCIEV bit in TIER is 1 at this point, the TPU requests an interrupt. After overflow, TCNT starts counting up again from H'0000. Figure 10.8 illustrates free-running counter operation.
TCNT value H'FFFF
H'0000
Time
CST bit
TCFV
Figure 10.8 Free-Running Counter Operation When compare match is selected as the TCNT clearing source, the TCNT counter for the relevant channel performs periodic count operation. The TGR register for setting the period is designated as an output compare register, and counter clearing by compare match is selected by means of bits CCLR0 to CCLR2 in the H8S/2268 Group TCR or bits CCLR0 and CCLR1 in the H8S/2264 Group TCR. After the settings have been made, TCNT starts up-count operation as a periodic counter when the corresponding bit in TSTR is set to 1. When the count value matches the value in TGR, the TGF bit in TSR is set to 1 and TCNT is cleared to H'0000. If the value of the corresponding TGIE bit in TIER is 1 at this point, the TPU requests an interrupt. After a compare match, TCNT starts counting up again from H'0000. Figure 10.9 illustrates periodic counter operation.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT value TGR
Counter cleared by TGR compare match
H'0000
Time
CST bit Flag cleared by software or DTC* activation TGF
Note: * Supported only by the H8S/2268 Group.
Figure 10.9 Periodic Counter Operation Waveform Output by Compare Match: The TPU can perform 0, 1, or toggle output from the corresponding output pin using compare match. 1. Example of setting procedure for waveform output by compare match Figure 10.10 shows an example of the setting procedure for waveform output by compare match.
Input selection [1] Select initial value 0 output or 1 output, and compare match output value 0 output, 1 output, or toggle output, by means of TIOR. The set initial value is output at the TIOC pin unit the first compare match occurs. [2] Set the timing for compare match generation in TGR. [3] Set the CST bit in TSTR to 1 to start the count operation.
[1]
Select waveform output mode
[2]
Set output timing
[3]
Start count operation
< Waveform output >
Figure 10.10 Example of Setting Procedure for Waveform Output by Compare Match 2. Examples of waveform output operation Figure 10.11 shows an example of 0 output/1 output. In this example TCNT has been designated as a free-running counter, and settings have been made such that 1 is output by compare match A, and 0 is output by compare match B. When the set level and the pin level coincide, the pin level does not change.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT value H'FFFF TGRA TGRB H'0000 No change TIOCA TIOCB No change No change No change 1 output 0 output Time
Figure 10.11 Example of 0 Output/1 Output Operation Figure 10.12 shows an example of toggle output. In this example, TCNT has been designated as a periodic counter (with counter clearing on compare match B), and settings have been made such that the output is toggled by both compare match A and compare match B.
TCNT value Counter cleared by TGRB compare match H'FFFF TGRB TGRA H'0000 Time Toggle output Toggle output
TIOCB TIOCA
Figure 10.12 Example of Toggle Output Operation Input Capture Function: The TCNT value can be transferred to TGR on detection of the TIOC pin input edge. Rising edge, falling edge, or both edges can be selected as the detected edge. 1. Example of input capture operation setting procedure Figure 10.13 shows an example of the input capture operation setting procedure.
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Section 10 16-Bit Timer Pulse Unit (TPU)
[1] Designate TGR as an input capture register by means of TIOR, and select rising edge, falling edge, or both edges as the input capture source and input signal edge. [2] Set the CST bit in TSTR to 1 to start the count operation. [1]
Input selection
Select input capture input
Start count
[2]

Figure 10.13 Example of Input Capture Operation Setting Procedure 2. Example of input capture operation Figure 10.14 shows an example of input capture operation. In this example both rising and falling edges have been selected as the TIOCA pin input capture input edge, the falling edge has been selected as the TIOCB pin input capture input edge, and counter clearing by TGRB input capture has been designated for TCNT.
Counter cleared by TIOCB input (falling edge)
TCNT value H'0180 H'0160
H'0010 H'0005 H'0000 Time
TIOCA
TGRA
H'0005
H'0160
H'0010
TIOCB TGRB H'0180
Figure 10.14 Example of Input Capture Operation
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.5.2
Synchronous Operation
In synchronous operation, the values in a number of TCNT counters can be rewritten simultaneously (synchronous presetting). Also, a number of TCNT counters can be cleared simultaneously by making the appropriate setting in TCR (synchronous clearing). Synchronous operation enables TGR to be incremented with respect to a single time base. Channels 0 to 2 in the H8S/2268 Group or channels 1 and 2 in the H8S/2264 Group can all be designated for synchronous operation. Example of Synchronous Operation Setting Procedure: Figure 10.15 shows an example of the synchronous operation setting procedure.
Synchronous operation selection Set synchronous operation [1]
Synchronous presetting
Synchronous clearing
Set TCNT
[2]
Clearing source generation channel? Yes Select counter clearing source Start count
No
[3]
Set synchronous counter clearing Start count
[4]
[5]
[5]

[1] Set to 1 the SYNC bits in TSYR corresponding to the channels to be designated for synchronous operation. [2] When the TCNT counter of any of the channels designated for synchronous operation is written to, the same value is simultaneously written to the other TCNT counters. [3] Use bits CCLR2 to CCLR0* in TCR to specify TCNT clearing by input capture/output compare, etc. [4] Use bits CCLR2 to CCLR0* in TCR to designate synchronous clearing for the counter clearing source. [5] Set to 1 the CST bits in TSTR for the relevant channels, to start the count operation. Note: * In the H8S/2264 Group, bits CCRL1 and CCLR0 in TCR.
Figure 10.15 Example of Synchronous Operation Setting Procedure
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Section 10 16-Bit Timer Pulse Unit (TPU)
Example of Synchronous Operation: Figure 10.16 shows an example of synchronous operation. In this example, synchronous operation and PWM mode 1 have been designated for channels 0 to 2 in the H8S/2268 Group, TGRB_0 compare match has been set as the channel 0 counter clearing source, and synchronous clearing has been set for the channel 1 and 2 counter clearing source. Three-phase PWM waveforms are output from pins TIOC0A, TIOC1A, and TIOC2A. At this time, synchronous presetting, and synchronous clearing by TGRB_0 compare match, are performed for channel 0 to 2 TCNT counters, and the data set in TGRB_0 is used as the PWM cycle. For details on PWM modes, see section 10.5.4, PWM Modes.
Synchronous clearing by TGRB_0 compare match TCNT0 to TCNT2 values TGRB_0 TGRB_1 TGRA_0 TGRB_2 TGRA_1 TGRA_2 H'0000 Time
TIOCA0 TIOCA1 TIOCA2
Figure 10.16 Example of Synchronous Operation
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.5.3
Buffer Operation (H8S/2268 Group Only)
Buffer operation, provided for channel 0, enables TGRC and TGRD to be used as buffer registers. Buffer operation differs depending on whether TGR has been designated as an input capture register or as a compare match register. Table 10.17 shows the register combinations used in buffer operation. Table 10.17 Register Combinations in Buffer Operation
Channel 0 Timer General Register TGRA_0 TGRB_0 Buffer Register TGRC_0 TGRD_0
* When TGR is an output compare register When a compare match occurs, the value in the buffer register for the corresponding channel is transferred to the timer general register. This operation is illustrated in figure 10.17.
Compare match signal
Buffer register
Timer general register
Comparator
TCNT
Figure 10.17 Compare Match Buffer Operation * When TGR is an input capture register When input capture occurs, the value in TCNT is transferred to TGR and the value previously held in the timer general register is transferred to the buffer register. This operation is illustrated in figure 10.18.
Input capture signal
Buffer register
Timer general register
TCNT
Figure 10.18 Input Capture Buffer Operation
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Section 10 16-Bit Timer Pulse Unit (TPU)
Example of Buffer Operation Setting Procedure: Figure 10.19 shows an example of the buffer operation setting procedure.
Buffer operation
Select TGR function
[1]
[1] Designate TGR as an input capture register or output compare register by means of TIOR. [2] Designate TGR for buffer operation with bits BFA and BFB in TMDR. [3] Set the CST bit in TSTR to 1 start the count operation.
Set buffer operation
[2]
Start count
[3]

Figure 10.19 Example of Buffer Operation Setting Procedure Examples of Buffer Operation: 1. When TGR is an output compare register Figure 10.20 shows an operation example in which PWM mode 1 has been designated for channel 0, and buffer operation has been designated for TGRA and TGRC. The settings used in this example are TCNT clearing by compare match B, 1 output at compare match A, and 0 output at compare match B. As buffer operation has been set, when compare match A occurs the output changes and the value in buffer register TGRC is simultaneously transferred to timer general register TGRA. This operation is repeated each time that compare match A occurs. For details on PWM modes, see section 10.5.4, PWM Modes.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT value TGRB_0 H'0200 TGRA_0 H'0000 TGRC_0 H'0200 Transfer TGRA_0 H'0200 H'0450 H'0450 H'0520 Time H'0520
H'0450
TIOCA
Figure 10.20 Example of Buffer Operation (1) 2. When TGR is an input capture register Figure 10.21 shows an operation example in which TGRA has been designated as an input capture register, and buffer operation has been designated for TGRA and TGRC. Counter clearing by TGRA input capture has been set for TCNT, and both rising and falling edges have been selected as the TIOCA pin input capture input edge. As buffer operation has been set, when the TCNT value is stored in TGRA upon the occurrence of input capture A, the value previously stored in TGRA is simultaneously transferred to TGRC.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT value H'0F07 H'09FB H'0532 H'0000 Time
TIOCA
TGRA
H'0532
H'0F07
H'09FB
TGRC
H'0532
H'0F07
Figure 10.21 Example of Buffer Operation (2) 10.5.4 PWM Modes
In PWM mode, PWM waveforms are output from the output pins. The output level can be selected as 0, 1, or toggle output in response to a compare match of each TGR. Designating TGR compare match as the counter clearing source enables the period to be set in that register. All channels can be designated for PWM mode independently. Synchronous operation is also possible. There are two PWM modes, as described below. * PWM mode 1 H8S/2268 Group: PWM output is generated from the TIOCA and TIOCC pins by pairing TGRA with TGRB and TGRC with TGRD. The output specified by bits IOA0 to IOA3 and IOC0 to IOC3 in TIOR is output from the TIOCA and TIOCC pins at compare matches A and C, and the output specified by bits IOB0 to IOB3 and IOD0 to IOD3 in TIOR is output at compare matches B and D. The initial output value is the value set in TGRA or TGRC. If the set values of paired TGRs are identical, the output value does not change when a compare match occurs. In PWM mode 1, PWM output is enable up to 4 phases.
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Section 10 16-Bit Timer Pulse Unit (TPU)
H8S/2264 Group: PWM output is generated from the TIOCA pin by pairing TGRA with TGRB. The output specified by bits IOA0 to IOA3 in TIOR is output from the TIOCA pin at compare match A, and the output specified by bits IOB0 to IOB3 in TIOR is output at compare match B. The initial output value is the value set in TGRA. If the set values of paired TGRs are identical, the output value does not change when a compare match occurs. In PWM mode 1, PWM output is enable up to 2 phases. * PWM mode 2 PWM output is generated using one TGR as the cycle register and the others as duty registers. The output specified in TIOR is performed by means of compare matches. Upon counter clearing by a synchronization register compare match, the output value of each pin is the initial value set in TIOR. If the set values of the cycle and duty registers are identical, the output value does not change when a compare match occurs. In PWM mode 2, PWM output is enabled up to 7 phases in the H8S/2268 Group or 3 phases in the H8S/2264 Group by using also synchronous operation. The correspondence between PWM output pins and registers is shown in table 10.18. Table 10.18 PWM Output Registers and Output Pins
Output Pins Channel 0*
1
Registers TGRA_0 TGRB_0 TGRC_0 TGRD_0
PWM Mode 1 TIOCA0 TIOCC0 TIOCA1 TIOCA2
PWM Mode 2* TIOCA0 TIOCB0 TIOCC0 TIOCD0 TIOCA1 TIOCB1 TIOCA2 TIOCB2
2
1 2
TGRA_1 TGRB_1 TGRA_2 TGRB_2
Notes: 1. Supported only by the H8S/2268 Group. 2. In PWM mode 2, PWM output is not possible for the TGR register in which the period is set.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Example of PWM Mode Setting Procedure: Figure 10.22 shows an example of the PWM mode setting procedure.
PWM mode
Select counter clock
[1]
Select counter clearing source
[2]
Select waveform output level
[3]
[1] Select the counter clock with bits TPSC2 to TPSC0 in TCR. At the same time, select the input clock edge with bits CKEG1 and CKEG0 in TCR. [2] Use bits CCLR2 to CCLR0* in TCR to select the TGR to be used as the TCNT clearing source. [3] Use TIOR to designate the TGR as an output compare register, and select the initial value and output value. [4] Set the cycle in the TGR selected in [2], and set the duty in the other the TGR. [5] Select the PWM mode with bits MD3 to MD0 in TMDR. [6] Set the CST bit in TSTR to 1 start the count operation. Note: * In the H8S/2264 Group, bits CCLR1 and CCLR0 in TCR.
Set TGR
[4]
Set PWM mode
[5]
Start count
[6]

Figure 10.22 Example of PWM Mode Setting Procedure Examples of PWM Mode Operation: Figure 10.23 shows an example of PWM mode 1 operation. In this example, TGRA compare match is set as the TCNT clearing source, 0 is set for the TGRA initial output value and output value, and 1 is set as the TGRB output value. In this case, the value set in TGRA is used as the period, and the values set in the TGRB registers are used as the duty levels.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT value TGRA
Counter cleared by TGRA compare match
TGRB H'0000 Time
TIOCA
Figure 10.23 Example of PWM Mode Operation (1) Figure 10.24 shows an example of PWM mode 2 operation. In this example, synchronous operation is designated for channels 0 and 1, TGRB_1 compare match is set as the TCNT clearing source, and 0 is set for the initial output value and 1 for the output value of the other TGR registers (TGRA_0 to TGRD_0, TGRA_1), outputting a 5-phase PWM waveform, in the H8S/2268 Group. In this case, the value set in TGRB_1 is used as the cycle, and the values set in the other TGRs are used as the duty levels.
Counter cleared by TGRB_1 compare match
TCNT value TGRB_1 TGRA_1 TGRD_0 TGRC_0 TGRB_0 TGRA_0 H'0000
Time TIOCA0
TIOCB0
TIOCC0
TIOCD0
TIOCA1
Figure 10.24 Example of PWM Mode Operation (2)
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Section 10 16-Bit Timer Pulse Unit (TPU)
Figure 10.25 shows examples of PWM waveform output with 0% duty and 100% duty in PWM mode.
TCNT value TGRB rewritten TGRA
TGRB H'0000
TGRB rewritten
TGRB rewritten Time
TIOCA
0% duty
Output does not change when cycle register and duty register compare matches occur simultaneously TCNT value TGRB rewritten TGRA TGRB rewritten TGRB H'0000 100% duty TGRB rewritten Time
TIOCA
Output does not change when cycle register and duty register compare matches occur simultaneously TCNT value TGRB rewritten TGRA TGRB rewritten
TGRB H'0000 100% duty 0% duty
TGRB rewritten Time
TIOCA
Figure 10.25 Example of PWM Mode Operation (3)
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.5.5
Phase Counting Mode (H8S/2268 Group Only)
In phase counting mode, the phase difference between two external clock inputs is detected and TCNT is incremented/decremented accordingly. This mode can be set for channels 1 and 2. When phase counting mode is set, an external clock is selected as the counter input clock and TCNT operates as an up/down-counter regardless of the setting of bits TPSC0 to TPSC2 and bits CKEG0 and CKEG1 in TCR. However, the functions of bits CCLR0 and CCLR1 in TCR, and of TIOR, TIER, and TGR, are valid, and input capture/compare match and interrupt functions can be used. If overflow occurs when TCNT is counting up, the TCFV flag in TSR is set; if underflow occurs when TCNT is counting down, the TCFU flag is set. The TCFD bit in TSR is the count direction flag. Reading the TCFD flag reveals whether TCNT is counting up or down. Table 10.19 shows the correspondence between external clock pins and channels. Table 10.19 Phase Counting Mode Clock Input Pins
External Clock Pins Channels When channel 1 is set to phase counting mode When channel 2 is set to phase counting mode A-Phase TCLKA TCLKC B-Phase TCLKB TCLKD
Example of Phase Counting Mode Setting Procedure: Figure 10.26 shows an example of the phase counting mode setting procedure.
Phase counting mode
[1] Select phase counting mode with bits MD3 to MD0 in TMDR. [2] Set the CST bit in TSTR to 1 to start the count operation. [1]
Select phase counting mode
Start count
[2]

Figure 10.26 Example of Phase Counting Mode Setting Procedure
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Section 10 16-Bit Timer Pulse Unit (TPU)
Examples of Phase Counting Mode Operation: In phase counting mode, TCNT counts up or down according to the phase difference between two external clocks. There are four modes, according to the count conditions. 1. Phase counting mode 1 Figure 10.27 shows an example of phase counting mode 1 operation, and table 10.20 summarizes the TCNT up/down-count conditions.
TCLKA(channel 1) TCLKC(channel 2) TCLKB(channel 1) TCLKD(channel 2) TCNT value
Up-count
Down-count
Time
Figure 10.27 Example of Phase Counting Mode 1 Operation Table 10.20 Up/Down-Count Conditions in Phase Counting Mode 1
TCLKA (Channel 1) TCLKC (Channel 2) High level Low level Low level High level High level Low level High level Low level Legend: : Rising edge : Falling edge Down-count TCLKB (Channel 1) TCLKD (Channel 2) Operation Up-count
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Section 10 16-Bit Timer Pulse Unit (TPU)
2. Phase counting mode 2 Figure 10.28 shows an example of phase counting mode 2 operation, and table 10.21 summarizes the TCNT up/down-count conditions.
TCLKA(channel 1) TCLKC(channel 2) TCLKB(channel 1) TCLKD(channel 2) TCNT value Up-count Down-count
Time
Figure 10.28 Example of Phase Counting Mode 2 Operation Table 10.21 Up/Down-Count Conditions in Phase Counting Mode 2
TCLKA (Channel 1) TCLKC (Channel 2) High level Low level Low level High level High level Low level High level Low level Legend: : Rising edge : Falling edge TCLKB (Channel 1) TCLKD (Channel 2) Operation Don't care Don't care Don't care Up-count Don't care Don't care Don't care Down-count
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Section 10 16-Bit Timer Pulse Unit (TPU)
3. Phase counting mode 3 Figure 10.29 shows an example of phase counting mode 3 operation, and table 10.22 summarizes the TCNT up/down-count conditions.
TCLKA(channel 1) TCLKC(channel 2) TCLKB(channel 1) TCLKD(channel 2) TCNT value
Up-count
Down-count
Time
Figure 10.29 Example of Phase Counting Mode 3 Operation Table 10.22 Up/Down-Count Conditions in Phase Counting Mode 3
TCLKA (Channel 1) TCLKC (Channel 2) High level Low level Low level High level High level Low level High level Low level Legend: : Rising edge : Falling edge TCLKB (Channel 1) TCLKD (Channel 2) Operation Don't care Don't care Don't care Up-count Down-count Don't care Don't care Don't care
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Section 10 16-Bit Timer Pulse Unit (TPU)
4. Phase counting mode 4 Figure 10.30 shows an example of phase counting mode 4 operation, and table 10.23 summarizes the TCNT up/down-count conditions.
TCLKA(channels 1) TCLKC(channels 2) TCLKB(channels 1) TCLKD(channels 2) TCNT value
Up-count
Down-count
Time
Figure 10.30 Example of Phase Counting Mode 4 Operation Table 10.23 Up/Down-Count Conditions in Phase Counting Mode 4
TCLKA (Channel 1) TCLKC (Channel 2) High level Low level Low level High level High level Low level High level Low level Legend: : Rising edge : Falling edge Don't care Down-count Don't care TCLKB (Channel 1) TCLKD (Channel 2) Operation Up-count
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.6
Interrupt Sources
There are three kinds of TPU interrupt source for the H8S/2268 Group; TGR input capture/compare match, TCNT overflow, and TCNT underflow. There are two kinds of TPU interrupt source for the H8S/2264 Group; TGR input capture/compare match and TCNT overflow. Each interrupt source has its own status flag and enable/disabled bit, allowing the generation of interrupt request signals to be enabled or disabled individually. When an interrupt request is generated, the corresponding status flag in TSR is set to 1. If the corresponding enable/disable bit in TIER is set to 1 at this time, an interrupt is requested. The interrupt request is cleared by clearing the status flag to 0. In the H8S/2268 Group, relative channel priorities can be changed by the interrupt controller, however the priority order within a channel is fixed. For details, see section 5, Interrupt Controller. Table 10.24 lists the TPU interrupt sources. Table 10.24 TPU Interrupts
Channel Name 0* TGI0A TGI0B TGI0C TGI0D TCI0V 1 TGI1A TGI1B TCI1V TCI1U* 2 TGI2A TGI2B TCI2V TCI2U* Interrupt Source TGRA_0 input capture/compare match TGRB_0 input capture/compare match TGRC_0 input capture/compare match TGRD_0 input capture/compare match TCNT_0 overflow TGRA_1 input capture/compare match TGRB_1 input capture/compare match TCNT_1 overflow TCNT_1 underflow TGRA_2 input capture/compare match TGRB_2 input capture/compare match TCNT_2 overflow TCNT_2 underflow Interrupt Flag TGFA_0 TGFB_0 TGFC_0 TGFD_0 TCFV_0 TGFA_1 TGFB_1 TCFV_1 TCFU_1 TGFA_2 TGFB_2 TCFV_2 TCFU_2 DTC Activation* Possible Possible Possible Possible Not possible Possible Possible Not possible Not possible Possible Possible Not possible Not possible Low Priority Level High
Note: * Supported only by the H8S/2268 Group.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Input Capture/Compare Match Interrupt: An interrupt is requested if the TGIE bit in TIER is set to 1 when the TGF flag in TSR is set to 1 by the occurrence of a TGR input capture/compare match on a particular channel. The interrupt request is cleared by clearing the TGF flag to 0. The H8S/2268 Group TPU has eight input capture/compare match interrupts and the H8S/2264 Group TPU has four input capture/compare match interrupts, four for channel 0, and two each for channels 1 and 2. Overflow Interrupt: An interrupt is requested if the TCIEV bit in TIER is set to 1 when the TCFV flag in TSR is set to 1 by the occurrence of TCNT overflow on a channel. The interrupt request is cleared by clearing the TCFV flag to 0. The H8S/2268 Group TPU has three overflow interrupts and the H8S/2264 Group TPU has two overflow interrupts, one for each channel (channels 0 to 2, or 1 and 2). Underflow Interrupt (H8S/2268 Group Only): An interrupt is requested if the TCIEU bit in TIER is set to 1 when the TCFU flag in TSR is set to 1 by the occurrence of TCNT underflow on a channel. The interrupt request is cleared by clearing the TCFU flag to 0. The TPU has two underflow interrupts, one each for channels 1 and 2.
10.7
DTC Activation (H8S/2268 Group Only)
The DTC can be activated by the TGR input capture/compare match interrupt for a channel. For details, see section 8, Data Transfer Controller (DTC). A total of eight TPU input capture/compare match interrupts can be used as DTC activation sources, four for channel 0, and two each for channels 1 and 2.
10.8
A/D Converter Activation
The A/D converter can be activated by the TGRA input capture/compare match for a channel. If the TTGE bit in TIER is set to 1 when the TGFA flag in TSR is set to 1 by the occurrence of a TGRA input capture/compare match on a particular channel, a request to begin A/D conversion is sent to the A/D converter. If the TPU conversion start trigger has been selected on the A/D converter side at this time, A/D conversion is begun. In the H8S/2268 Group TPU, a total of three TGRA input capture/compare match interrupts can be used as A/D converter conversion start sources, one for each channel (channels 0 to 2). While in the H8S/2264 Group TPU, a total of two TGRA input capture/compare match interrupts can be used, one for each channel (channels 1 and 2).
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9
10.9.1
Operation Timing
Input/Output Timing
TCNT Count Timing: Figure 10.31 shows TCNT count timing in internal clock operation, and figure 10.32 shows TCNT count timing in external clock operation.
Internal clock
Falling edge
Rising edge
TCNT input clock TCNT N-1 N N+1 N+2
Figure 10.31 Count Timing in Internal Clock Operation
External clock
Falling edge
Rising edge
Falling edge
TCNT input clock TCNT N-1 N N+1 N+2
Figure 10.32 Count Timing in External Clock Operation Output Compare Output Timing: A compare match signal is generated in the final state in which TCNT and TGR match (the point at which the count value matched by TCNT is updated). When a compare match signal is generated, the output value set in TIOR is output at the output compare output pin. After a match between TCNT and TGR, the compare match signal is not generated until the TCNT input clock is generated. Figure 10.33 shows output compare output timing.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT input clock N N+1
TCNT
TGR
N
Compare match signal TIOC pin
Figure 10.33 Output Compare Output Timing Input Capture Signal Timing: Figure 10.34 shows input capture signal timing.
Input capture input Input capture signal
TCNT
N
N+1
N+2
TGR
N
N+2
Figure 10.34 Input Capture Input Signal Timing
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Section 10 16-Bit Timer Pulse Unit (TPU)
Timing for Counter Clearing by Compare Match/Input Capture: Figure 10.35 shows the timing when counter clearing on compare match is specified, and figure 10.36 shows the timing when counter clearing on input capture is specified.
Compare match signal Counter clear signal
TCNT
N
H'0000
TGR
N
Figure 10.35 Counter Clear Timing (Compare Match)
Input capture signal
Counter clear signal
TCNT
N
H'0000
TGR
N
Figure 10.36 Counter Clear Timing (Input Capture)
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Section 10 16-Bit Timer Pulse Unit (TPU)
Buffer Operation Timing (H8S/2268 Group Only): Figures 10.37 and 10.38 show the timing in buffer operation.
TCNT
n
n+1
Compare match signal TGRA, TGRB TGRC, TGRD
n
N
N
Figure 10.37 Buffer Operation Timing (Compare Match)
Input capture signal
TCNT
N
N+1
TGRA, TGRB TGRC, TGRD
n
N
N+1
n
N
Figure 10.38 Buffer Operation Timing (Input Capture)
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9.2
Interrupt Signal Timing
TGF Flag Setting Timing in Case of Compare Match: Figure 10.39 shows the timing for setting of the TGF flag in TSR on compare match, and TGI interrupt request signal timing.
TCNT input clock
TCNT
N
N+1
TGR
N
Compare match signal
TGF flag
TGI interrupt
Figure 10.39 TGI Interrupt Timing (Compare Match)
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Section 10 16-Bit Timer Pulse Unit (TPU)
TGF Flag Setting Timing in Case of Input Capture: Figure 10.40 shows the timing for setting of the TGF flag in TSR on input capture, and TGI interrupt request signal timing.
Input capture signal
TCNT
N
TGR
N
TGF flag
TGI interrupt
Figure 10.40 TGI Interrupt Timing (Input Capture) TCFV Flag/TCFU Flag Setting Timing: Figure 10.41 shows the timing for setting of the TCFV flag in TSR on overflow, and TCIV interrupt request signal timing. Figure 10.42 shows the timing for setting of the TCFU flag in TSR on underflow, and TCIU interrupt request signal timing in the H8S/2268 Group.
TCNT input clock TCNT (overflow) Overflow signal TCFV flag
H'FFFF
H'0000
TCIV interrupt
Figure 10.41 TCIV Interrupt Setting Timing
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT input clock TCNT (underflow) Underflow signal
H'0000
H'FFFF
TCFU flag
TCIU interrupt
Figure 10.42 TCIU Interrupt Setting Timing (H8S/2268 Group Only) Status Flag Clearing Timing: After a status flag is read as 1 by the CPU, it is cleared by writing 0 to it. When the DTC is activated in the H8S/2268 Group, the flag is cleared automatically. Figure 10.43 shows the timing for status flag clearing by the CPU, and figure 10.44 shows the timing for status flag clearing by the DTC.
TSR write cycle T1 T2
Address
TSR address
Write signal
Status flag
Interrupt request signal
Figure 10.43 Timing for Status Flag Clearing by CPU
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Section 10 16-Bit Timer Pulse Unit (TPU)
DTC read cycle T1 T2 DTC write cycle T1 T2
Address
Source address
Destination address
Status flag
Interrupt request signal
Figure 10.44 Timing for Status Flag Clearing by DTC Activation (H8S/2268 Group Only)
10.10 Usage Notes
10.10.1 Module Stop Mode Setting TPU operation can be disabled or enabled using the module stop control register. The initial setting is for TPU operation to be halted. Register access is enabled by clearing module stop mode. For details, refer to section 22, Power-Down Modes. 10.10.2 Input Clock Restrictions The input clock pulse width must be at least 1.5 states in the case of single-edge detection, and at least 2.5 states in the case of both-edge detection. The TPU will not operate properly at narrower pulse widths. In the H8S/2268 Group phase counting mode, the phase difference and overlap between the two input clocks must be at least 1.5 states, and the pulse width must be at least 2.5 states. Figure 10.45 shows the input clock conditions in phase counting mode.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Phase Phase differdifferOverlap ence ence
Overlap TCLKA (TCLKC) TCLKB (TCLKD)
Pulse width
Pulse width
Pulse width
Pulse width
Notes: Phase difference and overlap : 1.5 states or more Pulse width : 2.5 states or more
Figure 10.45 Phase Difference, Overlap, and Pulse Width in Phase Counting Mode (H8S/2268 Group Only) 10.10.3 Caution on Period Setting When counter clearing on compare match is set, TCNT is cleared in the final state in which it matches the TGR value (the point at which the count value matched by TCNT is updated). Consequently, the actual counter frequency is given by the following formula: f= (N + 1)
Where f: Counter frequency : Operating frequency N: TGR set value 10.10.4 Contention between TCNT Write and Clear Operations If the counter clear signal is generated in the T2 state of a TCNT write cycle, TCNT clearing takes precedence and the TCNT write is not performed. Figure 10.46 shows the timing in this case.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT write cycle T1 T2
Address
TCNT address
Write signal Counter clear signal
TCNT
N
H'0000
Figure 10.46 Contention between TCNT Write and Clear Operations 10.10.5 Contention between TCNT Write and Increment Operations If incrementing occurs in the T2 state of a TCNT write cycle, the TCNT write takes precedence and TCNT is not incremented. Figure 10.47 shows the timing in this case.
TCNT write cycle T1 T2
Address
TCNT address
Write signal TCNT input clock N TCNT write data M
TCNT
Figure 10.47 Contention between TCNT Write and Increment Operations
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.10.6 Contention between TGR Write and Compare Match If a compare match occurs in the T2 state of a TGR write cycle, the TGR write takes precedence and the compare match signal is inhibited. A compare match does not occur even if the previous value is written. Figure 10.48 shows the timing in this case.
TGR write cycle T1 T2
Address TGR address
Write signal Compare match signal TCNT N N+1
Inhibited
TGR
N TGR write data
M
Figure 10.48 Contention between TGR Write and Compare Match
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.10.7 Contention between Buffer Register Write and Compare Match (H8S/2268 Group Only) If a compare match occurs in the T2 state of a TGR write cycle, the data that is transferred to TGR by the buffer operation will be that in the buffer prior to the write. Figure 10.49 shows the timing in this case.
TGR write cycle T1 T2
Address Buffer register address
Write signal Compare match signal Buffer register write data Buffer register TGR N M
N
Figure 10.49 Contention between Buffer Register Write and Compare Match
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.10.8 Contention between TGR Read and Input Capture If an input capture signal is generated in the T1 state of a TGR read cycle, the data that is read will be that in the buffer after input capture transfer. Figure 10.50 shows the timing in this case.
TGR read cycle T1 T2
Address TGR address
Read signal Input capture signal TGR X M
Internal data bus
M
Figure 10.50 Contention between TGR Read and Input Capture
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.10.9 Contention between TGR Write and Input Capture If an input capture signal is generated in the T2 state of a TGR write cycle, the input capture operation takes precedence and the write to TGR is not performed. Figure 10.51 shows the timing in this case.
TGR write cycle T1 T2
Address TGR address
Write signal Input capture signal TCNT M
TGR
M
Figure 10.51 Contention between TGR Write and Input Capture
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.10.10 Contention between Buffer Register Write and Input Capture (H8S/2268 Group Only) If an input capture signal is generated in the T2 state of a buffer register write cycle, the buffer operation takes precedence and the write to the buffer register is not performed. Figure 10.52 shows the timing in this case.
Buffer register write cycle T1 T2
Address Buffer register address
Write signal Input capture signal TCNT N
TGR Buffer register
M
N
M
Figure 10.52 Contention between Buffer Register Write and Input Capture
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.10.11 Contention between Overflow/Underflow and Counter Clearing In the H8S/2268 Group, if overflow/underflow and counter clearing occur simultaneously, the TCFV/TCFU flag in TSR is not set and TCNT clearing takes precedence. In the H8S/2264 Group, if overflow and counter clearing occur simultaneously, the TCFV flag in TSR is not set and TCNT clearing takes precedence. Figure 10.53 shows the operation timing when a TGR compare match is specified as the clearing source, and when H'FFFF is set in TGR.
TCNT input clock TCNT Counter clear signal TGF flag Prohibited H'FFFF H'0000
TCFV flag
Figure 10.53 Contention between Overflow and Counter Clearing
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.10.12 Contention between TCNT Write and Overflow/Underflow In the H8S/2268 Group, if there is an up-count or down-count in the T2 state of a TCNT write cycle and overflow/underflow occurs, the TCNT write takes precedence and the TCFV/TCFU flag in TSR is not set. In the H8S/2264 Group, if there is an up-count in the T2 state of a TCNT write cycle and overflow occurs, the TCNT write takes precedence and the TCFV flag in TSR is not set. Figure 10.54 shows the operation timing when there is contention between TCNT write and overflow.
TCNT write cycle T2 T1
Address
TCNT address
Write signal
TCNT write data H'FFFF M
TCNT
TCFV flag
Prohibited
Figure 10.54 Contention between TCNT Write and Overflow 10.10.13 Multiplexing of I/O Pins In the H8S/2268 Group, the TCLKA input pin is multiplexed with the TIOCC0 I/O pin, the TCLKB input pin with the TIOCD0 I/O pin, the TCLKC input pin with the TIOCB1 I/O pin, and the TCLKD input pin with the TIOCB2 I/O pin. In the H8S/2264 Group, the TCLKC input pin is multiplexed with the TIOCB1 I/O pin. When an external clock is input, compare match output should not be performed from a multiplexed pin. 10.10.14 Interrupts in Module Stop Mode If module stop mode is entered when an interrupt has been requested, it will not be possible to clear the CPU interrupt source, or the DTC activation source (the H8S/2268 Group only). Interrupts should therefore be disabled before entering module stop mode.
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Section 11 8-Bit Timers
Section 11 8-Bit Timers
The H8S/2268 Group has an on-chip 8-bit timer module with four channels (TMR_0, TMR_1, TMR_2 and TMR_3) operating on the basis of an 8-bit counter and an 8-bit reload timer with four channels (TMR_4). The H8S/2264 Group has an on-chip 8-bit timer module with two channels (TMR_0 and TMR_1) operating on the basis of an 8-bit counter.
11.1
8-Bit Timer Module (TMR_0, TMR_1, TMR_2, and TMR_3)
The 8-bit timer module can be used to count external events and be used as a multifunction timer in a variety of applications, such as generation of counter reset, interrupt requests, and pulse output with an arbitrary duty cycle using a compare-match signal with two registers. 11.1.1 Features
* Selection of clock sources Selected from three internal clocks (/8, /64, and /8192) and an external clock. * Selection of three ways to clear the counters The counters can be cleared on compare-match A or B, or by an external reset signal. * Timer output controlled by two compare-match signals The timer output signal in each channel is controlled by two independent compare-match signals, enabling the timer to be used for various applications, such as the generation of pulse output or PWM output with an arbitrary duty cycle. * Cascading of the two channels The module can operate as a 16-bit timer using channel 0 (channel 2*) as the upper half and channel 1 (channel 3*) as the lower half (16-bit count mode). Channel 1 (channel 3*) can be used to count channel 0 (channel 2*) compare-match occurrences (compare-match count mode). * Multiple interrupt sources for each channel Two compare-match interrupts and one overflow interrupt can be requested independently. * Generation of A/D conversion start trigger Channel 0 compare-match signal can be used as the A/D conversion start trigger. * Module stop mode can be set At initialization, the 8-bit timer operation is halted. Register access is enabled by canceling the module stop mode. Note: * Supported only by the H8S/2268 Group.
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TIMH220B_000020020700
Section 11 8-Bit Timers
Figure 11.1 shows a block diagram of the 8-bit timer module (TMR_0 and TMR_1).
External clock TMCI01 Internal clock* TMR0 /8 /64 /8192
Clock 1 Clock 0 Clock select TCORA_0 Compare-match A1 Compare-match A0 Comparator A_0 Overflow 1 Overflow 0 Clear 0 Clear 1 Compare-match B1 Compare-match B0 Comparator B_0 TMO1 Control logic TCORB_0 TCORB_1 Comparator B_1 TCORA_1
Comparator A_1
TMO TMRI01
TCNT_0
TCNT_1
Internal bus
TCSR_0 A/D TCR_0 CMIA0 CMIB0 OVI0 CMIA1 CMIB1 OVI1 Interrupt signals Legend: TCORA_0: TCORB_0: TCNT_0: TCSR_0: TCR_0: TCORA_1: TCORB_1: TCNT_1: TCSR_1: TCR_1:
TCSR_1
TCR_1
Time constant register A_0 Time constant register B_0 Timer counter_0 Timer control/status register_0 Timer control register_0 Time constant register A_1 Time constant register B_1 Timer counter_1 Timer control/status register_1 Timer control register_1
Note: * When a sub-clock is operating, will be SUB.
Figure 11.1 Block Diagram of 8-Bit Timer Module
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Section 11 8-Bit Timers
11.2
Input/Output Pins
Table 11.1 summarizes the input and output pins of the 8-bit timer module. Table 11.1 Pin Configuration
Channel 0 1 Common to 0 and 1 2* 3* Common to 2 and 3* Name Timer output Timer output Timer clock input Timer reset input Timer output Timer output Timer clock input Timer reset input Symbol TMO0 TMO1 TMCI01 TMRI01 TMO2 TMO3 TMCI23 TMRI23 I/O Output Output Input Input Output Output Input Input Function Output controlled by compare-match Output controlled by compare-match External clock input for the counter External reset input for the counter Output controlled by compare-match Output controlled by compare-match External clock input for the counter External reset input for the counter
Note: * Supported only by the H8S/2268 Group.
11.3
Register Descriptions
The 8-bit timer has the following registers. For details on the module stop register, refer to section 22.1.2, Module Stop Registers A to D (MSTPCRA to MSTPCRD). * Timer counter_0 (TCNT_0) * Time constant register A_0 (TCORA_0) * Time constant register B_0 (TCORB_0) * Timer control register_0 (TCR_0) * Timer control/status register_0 (TCSR_0) * Timer counter_1 (TCNT_1) * Time constant register A_1 (TCORA_1) * Time constant register B_1 (TCORB_1) * Timer control register_1 (TCR_1) * Timer control/status register_1 (TCSR_1) * Timer counter_2 (TCNT_2)* * Time constant register A_2 (TCORA_2)* * Time constant register B_2 (TCORB_2)* * Timer control register_2 (TCR_2)* * Timer control/status register_2 (TCSR_2)*
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Section 11 8-Bit Timers
* Timer counter_3 (TCNT_3)* * Time constant register A_3 (TCORA_3)* * Time constant register B_3 (TCORB_3)* * Timer control register_3 (TCR_3)* * Timer control/status register_3 (TCSR_3)* Note: * Supported only by the H8S/2268 Group. 11.3.1 Timer Counter (TCNT)
Each TCNT is an 8-bit up-counter. TCNT_0 and TCNT_1 (TCNT_2 and TCNT_3) comprise a single 16-bit register, so they can be accessed together by word access. TCNT increments on pulses generated from an internal or external clock source. This clock source is selected by clock select bits CKS2 to CKS0 in TCR. TCNT can be cleared by an external reset input signal or compare-match signals A and B. Counter clear bits CCLR1 and CCLR0 in TCR select the method of clearing. When TCNT overflows from H'FF to H'00, the overflow flag (OVF) in TCSR is set to 1. 11.3.2 Time Constant Register A (TCORA)
TCORA is an 8-bit readable/writable register. TCORA_0 and TCORA_1 (TCORA_2 and TCORA_3) comprise a single 16-bit register, so they can be accessed together by word access. TCORA is continually compared with the value in TCNT. When a match is detected, the corresponding compare-match flag A (CMFA) in TCSR is set. Note, however, that comparison is disabled during the T2 state of a TCORA write cycle. The timer output from the TMO pin can be freely controlled by the compare-match signal A and the settings of output select bits OS1 and OS0 in TCSR. The initial value of TCORA is H'FF. 11.3.3 Time Constant Register B (TCORB)
TCORB is an 8-bit readable/writable register. TCORB_0 and TCORB_1 (TCORB_2 and TCORB_3) comprise a single 16-bit register, so they can be accessed together by word access.
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Section 11 8-Bit Timers
TCORB is continually compared with the value in TCNT. When a match is detected, the corresponding compare-match flag B (CMFB) in TCSR is set. Note, however, that comparison is disabled during the T2 state of a TCORB write cycle. The timer output from the TMO pin can be freely controlled by the compare-match signal B and the settings of output select bits OS1 and OS0 in TCSR. The initial value of TCORB is H'FF. 11.3.4 Timer Control Register (TCR)
TCR selects the TCNT clock source and the time at which TCNT is cleared, and controls interrupt requests.
Bit 7 Bit Name CMIEB Initial Value 0 R/W R/W Description Compare-Match Interrupt Enable B Selects whether the CMFB interrupt request (CMIB) is enabled or disabled when the CMFB flag in TCSR is set to 1. 0: CMFB interrupt request (CMIB) is disabled 1: CMFB interrupt request (CMIB) is enabled 6 CMIEA 0 R/W Compare-Match Interrupt Enable A Selects whether the CMFA interrupt request (CMIA) is enabled or disabled when the CMFA flag in TCSR is set to 1. 0: CMFA interrupt request (CMIA) is disabled 1: CMFA interrupt request (CMIA) is enabled 5 OVIE 0 R/W Timer Overflow Interrupt Enable Selects whether the OVF interrupt request (OVI) is enabled or disabled when the OVF flag in TCSR is set to 1. 0: OVF interrupt request (OVI) is disabled 1: OVF interrupt request (OVI) is enabled 4 3 CCLR1 CCLR0 0 0 R/W R/W Counter Clear 1 and 0 These bits select the method by which TCNT is cleared 00: Clearing is disabled 01: Cleared on compare-match A 10: Cleared on compare-match B 11: Cleared on rising edge of external reset input Rev. 4.00 Mar 21, 2006 page 259 of 654 REJ09B0071-0400
Section 11 8-Bit Timers Initial Value 0 0 0
Bit 2 to 0
Bit Name CKS2 CKS1 CKS0
R/W R/W R/W R/W
Description Clock Select 2 to 0 The input clock can be selected from three clocks divided from the system clock (). When use of an external clock is selected, three types of count can be selected: at the rising edge, the falling edge, and both rising and falling edges. 000: Clock input disabled 001: /8 internal clock source, counted on the falling edge 010: /64 internal clock source, counted on the falling edge 011: /8192 internal clock source, counted on the falling edge 100: For channel 0: Counted on TCNT1 overflow signal* For channel 1: Counted on TCNT0 compare-matchA signal* For channel 2: Counted on TCNT3 overflow signal* For channel 3: Counted on TCNT2 compare-matchA signal* 101: External clock source, counted at rising edge 110: External clock source, counted at falling edge 111: External clock source, counted at both rising and falling edges
Note: * If the count input of channel 0 (channel 2) is the TCNT1 (TCNT3) overflow signal and that of channel 1 (channel 3) is the TCNT0 (TCNT2) compare-match signal, no incrementing clock will be generated. Do not use this setting.
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Section 11 8-Bit Timers
11.3.5
Timer Control/Status Register (TCSR)
TCSR indicates status flags and controls compare-match output. * TCSR_0
Bit 7 Bit Name CMFB Initial Value 0 R/W R/(W) *1 Description Compare-Match Flag B [Setting condition] When TCNT = TCORB [Clearing conditions] * * Read CMFB when CMFB = 1, then write 0 in CMFB 2 The DTC* is activated by the CMIB interrupt and the 2 DISEL bit = 0 in MRB of the DTC* with the transfer counter other than 0 6 CMFA 0 R/(W) *1 Compare-match Flag A [Setting condition] When TCNT = TCORA [Clearing conditions] * * Read CMFA when CMFA = 1, then write 0 in CMFA 2 The DTC* is activated by the CMIA interrupt and 2 DISEL bit = 0 in MRB of the DTC* with the transfer counter other than 0 5 OVF 0 R/(W)* Timer Overflow Flag
1
[Setting condition] When TCNT overflows from H'FF to H'00 [Clearing condition] Read OVF when OVF = 1, then write 0 in OVF 4 ADTE 0 R/W A/D Trigger Enable Enables or disables A/D converter start requests by compare-match A. 0: A/D converter start requests by compare-match A are disabled 1: A/D converter start requests by compare-match A are enabled
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Section 11 8-Bit Timers Initial Value 0 0
Bit 3 2
Bit Name OS3 OS2
R/W R/W R/W
Description Output Select 3 and 2 These bits specify how the timer output level is to be changed by a compare-match B of TCORB and TCNT. 00: No change when compare-match B occurs 01: 0 is output when compare-match B occurs 10: 1 is output when compare-match B occurs 11: Output is inverted when compare-match B occurs (toggle output)
1 0
OS1 OS0
0 0
R/W R/W
Output Select 1 and 0 These bits specify how the timer output level is to be changed by a compare-match A of TCORA and TCNT. 00: No change when compare-match A occurs 01: 0 is output when compare-match A occurs 10: 1 is output when compare-match A occurs 11: Output is inverted when compare-match A occurs (toggle output)
Notes: 1. Only 0 can be written to this bit, to clear the flag. 2. Supported only by the H8S/2268 Group.
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Section 11 8-Bit Timers
* TCSR_1 and TCSR_3
Bit 7 Bit Name CMFB Initial Value 0 R/W R/(W) *1 Description Compare-Match Flag B [Setting condition] When TCNT = TCORB [Clearing conditions] * * Read CMFB when CMFB = 1, then write 0 in CMFB 2 The DTC* is activated by the CMIB interrupt and the 2 DISEL Bit = 0 in MRB of the DTC* with the transfer counter other than 0 6 CMFA 0 R/(W) *1 Compare-match Flag A [Setting condition] When TCNT = TCORA [Clearing conditions] * * Read CMFA when CMFA = 1, then write 0 in CMFA 2 The DTC* is activated by the CMIA interrupt and the 2 DISEL Bit = 0 in MRB of the DTC* with the transfer counter other than 0 5 OVF 0 R/(W)* Timer Overflow Flag
1
[Setting condition] When TCNT overflows from H'FF to H'00 [Clearing condition] Read OVF when OVF = 1, then write 0 in OVF 4 3 2 OS3 OS2 1 0 0 R/W R/W Reserved This bit is always read as 1 and cannot be modified. Output Select 3 and 2 These bits specify how the timer output level is to be changed by a compare-match B of TCORB and TCNT. 00: No change when compare-match B occurs 01: 0 is output when compare-match B occurs 10: 1 is output when compare-match B occurs 11: Output is inverted when compare-match B occurs (toggle output)
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Section 11 8-Bit Timers Initial Value 0 0
Bit 1 0
Bit Name OS1 OS0
R/W R/W R/W
Description Output Select 1 and 0 These bits specify how the timer output level is to be changed by a compare-match A of TCORA and TCNT. 00: No change when compare-match A occurs 01: 0 is output when compare-match A occurs 10: 1 is output when compare-match A occurs 11: Output is inverted when compare-match A occurs (toggle output)
Notes: 1. Only 0 can be written to this bit, to clear the flag. 2. Supported only by the H8S/2268 Group.
* TCSR_2
Bit 7 Bit Name CMFB Initial Value 0 R/W R/(W) *1 Description Compare-Match Flag B [Setting condition] When TCNT = TCORB [Clearing conditions] * * Read CMFB when CMFB = 1, then write 0 in CMFB 2 The DTC* is activated by the CMIB interrupt and the 2 DISEL Bit = 0 in MRB of the DTC* with the transfer counter other than 0 6 CMFA 0 R/(W)* Compare-match Flag A
1
[Setting condition] When TCNT = TCORA [Clearing conditions] * * Read CMFA when CMFA = 1, then write 0 in CMFA 2 The DTC* is activated by the CMIA interrupt and the 2 DISEL Bit = 0 in MRB of the DTC* with the transfer counter other than 0
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Section 11 8-Bit Timers Initial Value 0
Bit 5
Bit Name OVF
R/W R/(W) *1
Description Timer Overflow Flag [Setting condition] When TCNT overflows from H'FF to H'00 [Clearing condition] Read OVF when OVF = 1, then write 0 in OVF
4
OS3 OS2
0
R/W
Reserved This bit is a readable/writable bit, but the write value should always be 0.
3 2
0 0
R/W R/W
Output Select 3 and 2 These bits specify how the timer output level is to be changed by a compare-match B of TCORB and TCNT. 00: No change when compare-match B occurs 01: 0 is output when compare-match B occurs 10: 1 is output when compare-match B occurs 11: Output is inverted when compare-match B occurs (toggle output)
1 0
OS1 OS0
0 0
R/W R/W
Output Select 1 and 0 These bits specify how the timer output level is to be changed by a compare-match A of TCORA and TCNT. 00: No change when compare-match A occurs 01: 0 is output when compare-match A occurs 10: 1 is output when compare-match A occurs 11: Output is inverted when compare-match A occurs (toggle output)
Notes: 1. Only 0 can be written to this bit, to clear the flag. 2. Supported only by the H8S/2268 Group.
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Section 11 8-Bit Timers
11.4
11.4.1
Operation
Pulse Output
Figure 11.2 shows an example of arbitrary duty pulse output. 1. Set TCR in CCR1 to 0 and CCLR0 to 1 to clear TCNT by a TCORA compare-match. 2. Set OS3 to OS0 bits in TCSR to B'0110 to output 1 by a TCORA compare-match and 0 by a TCORB compare-match. By the above settings, waveforms with the cycle of TCORA and the pulse width of TCORB can be output without software intervention.
TCNT H'FF TCORA TCORB H'00 TMO Counter clear
Figure 11.2 Example of Pulse Output
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Section 11 8-Bit Timers
11.5
11.5.1
Operation Timing
TCNT Incrementation Timing
Figure 11.3 shows the TCNT count timing with internal clock source. Figure 11.4 shows the TCNT incrementation timing with external clock source. The pulse width of the external clock for incrementation at single edge must be at least 1.5 status, and at least 2.5 states for incrementation at both edges. The counter will not increment correctly if the pulse width is less than these values.
Internal clock
TCNT input clock
TCNT
N-1
N
N+1
Figure 11.3 Count Timing for Internal Clock Input
External clock input pin
TCNT input clock
TCNT
N-1
N
N+1
Figure 11.4 Count Timing for External Clock Input
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Section 11 8-Bit Timers
11.5.2
Timing of CMFA and CMFB Setting When a Compare-Match Occurs
The CMFA and CMFB flags in TCSR are set to 1 by a compare-match signal generated when the TCOR and TCNT values match. The compare-match signal is generated at the last state in which the match is true, just before the timer counter is updated. Therefore, when TCOR and TCNT match, the compare-match signal is not generated until the next incrementation clock input. Figure 11.5 shows the timing of CMF flag setting.
TCNT
N
N+1
TCOR Compare-match signal
N
CMF
Figure 11.5 Timing of CMF Setting 11.5.3 Timing of Timer Output When a Compare-Match Occurs
When a compare-match occurs, the timer output changes as specified by the output select bits (OS3 to OS0) in TCSR. Figure 11.6 shows the timing when the output is set to toggle at comparematch A.
Compare-match A signal
Timer output pin
Figure 11.6 Timing of Timer Output
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Section 11 8-Bit Timers
11.5.4
Timing of Compare-Match Clear When a Compare-Match Occurs
TCNT is cleared when compare-match A or B occurs, depending on the setting of the CCLR1 and CCLR0 bits in TCR. Figure 11.7 shows the timing of this operation.
Compare-match signal
TCNT
N
H'00
Figure 11.7 Timing of Compare-Match Clear 11.5.5 TCNT External Reset Timing
TCNT is cleared at the rising edge of an external reset input, depending on the settings of the CCLR1 and CCLR0 bits in TCR. The width of the clearing pulse must be at least 1.5 states. Figure 11.8 shows the timing of this operation.
External reset input pin
Clear signal
TCNT
N-1
N
H'00
Figure 11.8 Timing of Clearing by External Reset Input
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Section 11 8-Bit Timers
11.5.6
Timing of Overflow Flag (OVF) Setting
OVF in TCSR is set to 1 when the timer count overflows (changes from H'FF to H'00). Figure 11.9 shows the timing of this operation.
TCNT
H'FF
H'00
Overflow signal
OVF
Figure 11.9 Timing of OVF Setting
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Section 11 8-Bit Timers
11.6
Operation with Cascaded Connection
If bits CKS2 to CKS0 in one of TCR_0 and TCR_1 (TCR_2 and TCR_3) are set to B'100, the 8bit timers of the two channels are cascaded. With this configuration, a single 16-bit timer can be used (16-bit timer mode) or compare-matches of 8-bit channel 0 (channel 2) can be counted by the timer of channel 1 (channel 3) (compare-match count mode). In the case that channel 0 is connected to channel 1 in cascade, the timer operates as described below. 11.6.1 16-Bit Count Mode
When bits CKS2 to CKS0 in TCR_0 are set to B'100, the timer functions as a single 16-bit timer with channel 0 occupying the upper 8 bits and channel 1 occupying the lower 8 bits. * Setting of compare-match flags The CMF flag in TCSR_0 is set to 1 when a 16-bit compare-match occurs. The CMF flag in TCSR_1 is set to 1 when a lower 8-bit compare-match occurs. * Counter clear specification If the CCLR1 and CCLR0 bits in TCR_0 have been set for counter clear at compare-match, the 16-bit counter (TCNT_0 and TCNT_1 together) is cleared when a 16-bit comparematch occurs. The 16-bit counter (TCNT_0 and TCNT_1 together) is cleared even if counter clear by the TMRI01 pin has also been set. The settings of the CCLR1 and CCLR0 bits in TCR_1 are ignored. The lower 8 bits cannot be cleared independently. * Pin output Control of output from the TMO0 pin by bits OS3 to OS0 in TCSR_0 is in accordance with the 16-bit compare-match conditions. Control of output from the TMO1 pin by bits OS3 to OS0 in TCSR_1 is in accordance with the lower 8-bit compare-match conditions. 11.6.2 Compare-Match Count Mode
When bits CKS2 to CKS0 in TCR_1 are B'100, TCNT_1 counts compare-match A for channel 0. Channels 0 and 1 are controlled independently. Conditions such as setting of the CMF flag, generation of interrupts, output from the TMO pin, and counter clearing are in accordance with the settings for each channel.
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Section 11 8-Bit Timers
11.7
11.7.1
Interrupt Sources
Interrupt Sources and DTC Activation
The 8-bit timer can generate three types of interrupt: CMIA, CMIB, and OVI. Table 11.2 shows the interrupt sources and priority. Each interrupt source can be enabled or disabled independently by interrupt enable bits in TCR. Independent signals are sent to the interrupt controller for each interrupt. In the H8S/2268 Group, it is also possible to activate the DTC by means of CMIA and CMIB interrupts. Table 11.2 8-Bit Timer Interrupt Sources
Interrupt source CMIA0 CMIB0 OVI0 CMIA1 CMIB1 OVI1 CMIA2* CMIB2* OVI2* CMIA3* CMIB3* OVI3* Description TCORA_0 compare-match TCORB_0 compare-match TCNT_0 overflow TCORA_1 compare-match TCORB_1 compare-match TCNT_1 overflow TCORA_2 compare-match TCORB_2 compare-match TCNT_2 overflow TCORA_3 compare-match TCORB_3 compare-match TCNT_3 overflow Flag CMFA CMFB OVF CMFA CMFB OVF CMFA CMFB OVF CMFA CMFB OVF DTC Activation* Possible Possible Not possible Possible Possible Not possible Possible Possible Not possible Possible Possible Not possible Low Low High Low High Low High Interrupt Priority High
Note: * Supported only by the H8S/2268 Group.
11.7.2
A/D Converter Activation
The A/D converter can be activated only by channel 0 compare match A. If the ADTE bit in TCSR0 is set to 1 when the CMFA flag is set to 1 by the occurrence of channel 0 compare match A, a request to start A/D conversion is sent to the A/D converter. If the 8-bit timer conversion start trigger has been selected on the A/D converter side at this time, A/D conversion is started.
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Section 11 8-Bit Timers
11.8
11.8.1
Usage Notes
Contention between TCNT Write and Clear
If a timer counter clock pulse is generated during the T2 state of a TCNT write cycle, the clear takes priority, so that the counter is cleared and the write is not performed. Figure 11.10 shows this operation.
TCNT write cycle by CPU T1
T2
Address
TCNT address
Internal write signal Counter clear signal
TCNT
N
H'00
Figure 11.10 Contention between TCNT Write and Clear
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Section 11 8-Bit Timers
11.8.2
Contention between TCNT Write and Increment
If a timer counter clock pulse is generated during the T2 state of a TCNT write cycle, the write takes priority and the counter is not incremented. Figure 11.11 shows this operation.
TCNT write cycle by CPU T1 T2
Address
TCNT address
Internal write signal TCNT input clock
TCNT
N
M Counter write data
Figure 11.11 Contention between TCNT Write and Increment
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Section 11 8-Bit Timers
11.8.3
Contention between TCOR Write and Compare-Match
During the T2 state of a TCOR write cycle, the TCOR write has priority even if a compare-match occurs and the compare-match signal is disabled. Figure 11.12 shows this operation.
TCOR write cycle by CPU T1 T2
Address
TCOR address
Internal write signal
TCNT
N
N+1
TCOR
N
M TCOR write data
Compare-match signal Prohibited
Figure 11.12 Contention between TCOR Write and Compare-Match 11.8.4 Contention between Compare-Matches A and B
If compare-matches A and B occur at the same time, the 8-bit timer operates in accordance with the priorities for the output states set for compare-match A and compare-match B, as shown in table 11.3. Table 11.3 Timer Output Priorities
Output Setting Toggle output 1 output 0 output No change Low Priority High
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Section 11 8-Bit Timers
11.8.5
Switching of Internal Clocks and TCNT Operation
TCNT may increment erroneously when the internal clock is switched over. Table 11.4 shows the relationship between the timing at which the internal clock is switched (by writing to the CKS1 and CKS0 bits) and the TCNT operation When the TCNT clock is generated from an internal clock, the falling edge of the internal clock pulse is detected. If clock switching causes a change from high to low level, as shown in no. 3 in table 11.4, a TCNT clock pulse is generated on the assumption that the switchover is a falling edge. This increments TCNT. Erroneous incrementation can also happen when switching between internal and external clocks. Table 11.4 Switching of Internal Clock and TCNT Operation
Timing of Switchover by Means of CKS1 and No. CKS0 Bits TCNT Clock Operation 1 Switching from low to 1 low*
Clock before switchover Clock after switchover TCNT clock
TCNT
N CKS bit rewrite
N+1
2
Switching from low to 2 high*
Clock before switchover Clock after switchover TCNT clock
TCNT
N
N+1
N+2
CKS bit rewrite
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Section 11 8-Bit Timers Timing of Switchover by Means of CKS1 and No. CKS0 Bits TCNT Clock Operation 3 Switching from high to 3 low*
Clock before switchover Clock after switchover TCNT clock
*4
TCNT
N
N+1 CKS bit rewrite
N+2
4
Switching from high to high
Clock before switchover Clock after switchover TCNT clock
TCNT
N
N+1
N+2 CKS bit rewrite
Notes: 1. 2. 3. 4.
Includes switching from low to stop, and from stop to low. Includes switching from stop to high. Includes switching from high to stop. Generated on the assumption that the switchover is a falling edge; TCNT is incremented.
11.8.6
Contention between Interrupts and Module Stop Mode
If module stop mode is entered when an interrupt has been requested, it will not be possible to clear the CPU interrupt source or the DTC activation source. Interrupts should therefore be disabled before entering module stop mode.
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Section 11 8-Bit Timers
11.9
8-Bit Reload Timer (TMR_4) (H8S/2268 Group Only)
The 8-bit reload timer comprises an 8-bit up-counter with four channels, and has two functions, the interval function and automatic reload function. 11.9.1 Features
* Selection of clock sources Selected from 14 internal clocks (/32768, /8192, /2048, /512, /128, /32, /8, /2, SUB/256, SUB/128, SUB/64, SUB/32, SUB/8 and SUB/2) and an external clock. * Interrupts requested by counter overflow * Operation with cascaded connection (the lower the channel number, the higher the bit in the connected timer) Connecting two timers (channels 4 and 5, channels 5 and 6, or channels 6 and 7): The module operates as a 16-bit timer Connecting three timers (channels 4 to 6 or channels 5 to 7): The module operates as a 24bit timer Connecting four timers (channels 4 to 7): The module operates as a 32-bit timer * Module stop mode can be set At initialization, the 8-bit reload timer is halted. Register access is enabled by canceling the module stop mode. Figure 11.13 shows a block diagram of the 8-bit reload timer.
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Section 11 8-Bit Timers
External clock TMCI4 Internal clock /2 /8 /32 /128 /512 /2048 /8192 /32768 SUB/2 SUB/8 SUB/32 SUB/64 SUB/128 SUB/256 reload TLR_4 TLR_5 TLR_6 TLR_7 TCNT_4 TCNT_5 TCNT_6 TCNT_7
Clock select Clock select Clock select Clock select
TCR_4
TCR_5
TCR_6
TCR_7
Module bus
Interrupt contorol
Bus interface
OVI4
OVI5
OVI6
OVI7
Legend: TCR_4: TCNT_4: TLR_4: TCR_5: TCNT_5: TLR_5:
Timer control register 4 Timer counter 4 Timer reload register 4 Timer control register 5 Timer counter 5 Timer reload register 5
TCR_6: TCNT_6: TLR_6: TCR_7: TCNT_7: TLR_7:
Timer control register 6 Timer counter 6 Timer reload register 6 Timer control register 7 Timer counter 7 Timer reload register 7
Figure 11.13 Block Diagram of 8-Bit Reload Timer 11.9.2 Input/Output Pins
The following table shows the pin configuration for the 8-bit timer module.
Name Timer clock input pin Symbol TMCI4 I/O Input Function External clock input for the counter
Note: Voltage applied to the TMCI4 input pin should be within the range, AVss TMCI4 AVcc.
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Internal bus
Section 11 8-Bit Timers
11.10
Register Descriptions
The 8-bit reload timer has the following registers. For details on the module stop control register, refer to section 22.1.2, Module Stop Control Registers A to D (MSTPCRA to MSTPCRD). * Timer control register (TCR) * Timer Counter (TCNT) * Timer reload register (TLR) TCNT or TLR can operate as a 16-bit timer using TCNT_4 or TLR_4 (TCNT_6 or TLR_6) as the upper half and TCNT_5 or TLR_5 (TCNT_7 or TLR_7) as the lower half. 11.10.1 Timer Control Registers 4 to 7 (TCR_4 to TCR_7) TCR selects the automatic reload function and TCNT clock source, and controls interrupt requests.
Bit 7 Bit Name ARSL Initial Value 0 R/W R/W Description Automatic Reload Function Select Selects the automatic reload function 0: The interval function is selected 1: The automatic reload function is selected 6 OVF 0 R/(W)* Timer Overflow Flag Indicates that TCNT overflows from H'FF to H'00. 0: [Clearing condition] Read OVF when OVF = 1, then write 0 in OVF 1: [Setting condition] When TCNT overflows from H'FF to H'00 5 OVIE 0 R/W Timer Overflow Interrupt Enable Selects whether the OVF interrupt request (OVI) is enabled or disabled when the OVF flag in TCSR is set to 1. 0: OVF interrupt request (OVI) is disabled 1: OVF interrupt request (OVI) is enabled 4, 3 All 1 Reserved These bits are always read as 1 and cannot be modified.
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Section 11 8-Bit Timers Initial Value 0 0 0
Bit 2 to 0
Bit Name CKS2 CKS1 CKS0
R/W R/W R/W R/W
Description Clock Select 2 to 0 The input clock can be selected from internal clocks and an external clock, which are divided from the system clock () or subclock (SUB). Channel4 000: /32768 001: /2048 010: /128 011: /8 100: SUB /256 101: SUB /64 110: SUB /8 111: TCNT_5 overflow Channel5 /8192 /512 /32 /2 SUB /128 SUB /32 SUB /2 TCNT_6 overflow Channel6 /32768 /2048 /128 /8 SUB /256 SUB /64 SUB /8 TCNT_7 overflow Channel7 /8192 /512 /32 /2 SUB /128 SUB /32 SUB /2 Count of the rising clock of the external clock.
Note: * Only a 0 can be written to this bit, to clear the flag.
11.10.2 Timer Counters 4 to 7 (TCNT4 to TCNT7) Each TCNT is an 8-bit readable up-counter and increments on clock pulses generated from an internal or external clock source. This clock source is selected by clock select bits CKS2 to CKS0 in TCR TCNT_4 and TCNT_5, or TCNT_6 and TCNT_7 comprise a single 16-bit register, and can be accessed simultaneously by word access. When TCNT overflows from H'FF to H'00, the overflow flag (OVF) in TCR is set to 1. TCNT is initialized to H'00 by a reset or in hardware standby mode. 11.10.3 Time Reload Registers 4 to 7 (TLR_4 to TLR_7) Each TLR is an 8-bit writable register and sets a reload value for TCNT. When a reload value is set to TLR, the value is simultaneously load to TCNT and incrementation starts from the value. When TCNT overflows during automatic reload operation, the TLR value is written to TCNT. Therefore, the overflow cycle can be set within the range from 1 to 256 input clock cycles.
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Section 11 8-Bit Timers
TLR_4 and TLR_5, or TLR_6 and TLR_7 comprise a single 16-bit register, and can be accessed simultaneously by word access. TLR is initialized to H'00 by a reset or in hardware standby mode.
11.11
Operation
11.11.1 Interval Timer Operation When the ARSL bit in TCR is set to 0, the timer operates as an interval timer. After a module stop mode is canceled, the timer continues incrementation as an interval timer without stopping because TCNT is initialized to H'00 and TLR is cleared to 0 by a reset. The input clock source can be selected from 14 internal clocks output from the prescaler unit and an external clock from the TMCI4 input pin, using the CKS2 to CKS0 bits in TCR. When a clock is input after the TCNT value has been H'FF, the timer overflows and OVF in TCR is set to 1. At this time, if OVIE in TCR is 1, an interrupt is generated. When an overflow occurs, the TCNT count value is cleared to H'00 and TCNT restarts incrementation. If a value is set to TLR during interval timer operation, the value is also written to TCNT. This operation timing is shown in figure 11.14.
TCNT value Overflow Overflow Overflow Overflow
H'FF
H'00
Time
MSTPD5 = 0 ARSL = 0
OVF
OVF
OVF
OVF
OVF: Timer overflow interrupt request generation
Figure 11.14 Operation in Interval Timer Mode
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Section 11 8-Bit Timers
11.11.2 Automatic Reload Timer Operation When the ARSL bit in TCR is set to 1, the timer operates as an automatic reload timer. When a reload value is set to TLR, the value is also loaded to TCNT simultaneously, and TCNT starts incrementation from the value. If a clock is input after the TCNT count value reaches H'FF, the timer overflows, the TLR value is written to TCNT, and incrementation is continued from the value. Therefore, the overflow cycle can be set within the range from 1 to 256, using a TLR value. Clock sources and interrupts in automatic reload operation are the same as those in interval operation. If TLR is re-set during automatic reload operation, the value is also set to TCNT. This operation timing is shown in figure 11.15.
TCNT value H'FF
Overflow
Overflow
Overflow
Overflow
Overflow
Overflow
H'80 H'40 H'00 Time
MSTPD5 = 0 ARSL = 0
ARSL = 1 TLR setting (H'80))
OVF
OVF
OVF
OVF TLR setting (H'40)
OVF
OVF
OVF: Timer overflow interrupt request generation
Figure 11.15 Operation in Automatic Reload Timer Mode 11.11.3 Cascaded Connection * Read of TCNT The channel relationship for cascaded connection is shown in figure 11.16. When accessing beyond the word area, for example, when a cascaded connection including channels 5 and 6 is created as shown in (3), and (6) to (8) in the figure, the counter value of the lower channel is read when TCNT5 is read, and the data is stored in the TCNT register. For case (7) where channels 5 to 7 are cascaded, the counter values of channels 6 and 7 are read when TCNT5 is read, and the data is stored in TCNT6/7 registers. Accordingly, when reading cascaded TCNT, read from the upper channel.
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Section 11 8-Bit Timers
For a word connection, access in word units.
Upper 1 Channel 4 Channel 5 Channel 6 Channel 7 Lower
2
Channel 4
Channel 5
Channel 6
Channel 7
3
Channel 4
Channel 5
Channel 6
Channel 7
4
Channel 4
Channel 5
Channel 6
Channel 7
5
Channel 4
Channel 5
Channel 6
Channel 7
6
Channel 4
Channel 5
Channel 6
Channel 7
7
Channel 4
Channel 5
Channel 6
Channel 7
Channel 4 8
Channel 5
Channel 6
Channel 7
Cascaded connection
Figure 11.16 Channel Relationship of Cascaded Connection * Write to TLR When writing to the cascaded TLR, even if a single channel of TLR is written, the system regards that the entire channels of the cascaded TLR are rewritten. At this point in time, the value in the entire cascaded TLR is loaded into the corresponding TCNT. The timer operation starts at the TLR value that is most-recently written in TLR access cycles. * Operation Clock Although each channel usually operates on an individual clock, a cascaded channel operates on the same clock. The operation clock for the lowest cascaded channel is used as a common clock of each channel. In this case, the setting for the clocks of the channels other than the lowest channel is disabled. * Automatic Reload Function Select and Operation Timing
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Section 11 8-Bit Timers
Although the automatic reload function is usually set and implemented in individual channel, a cascaded channel operates according to the setting for the automatic reload function of the highest channel. In this case, the automatic reload function settings for the channels other than the highest channel are disabled. When the automatic reload function is enabled for cascaded channel, the TLR setting value of each channel is automatically reloaded simultaneously in the reload timing of the highest channel. * Timer Overflow Flag (OVF) Although an OVF is usually set to an individual channel independently, an OVF is set to the highest channel of a cascaded channel. In this case, OVFs of the channels other than that of the highest channel is disabled.
11.12
Usage Notes
11.12.1 Conflict between Write to TLR and Count Up/Automatic Reload Even if a count up occurs in the T2 state during TLR write cycles, the counter is not incremented and TLR write (load to TCNT) is carried out instead (as in Figure 11.11). Likewise, if an automatic reload occurs during write cycles, TLR write (load to TCNT) is carried out instead. 11.12.2 Switchover of Internal Clock and TCNT Operation Depending on the timing which the internal clock is switched, TCNT may be incremented (see table 11.4). Likewise, when the clock pulse is changed ( and SUB), TCNT may be incremented, and may not in some cases. Therefore, when the internal clock is changed, resume timer operation by resetting TLR (Write H'00 to TLR when the interval timer is in operation). 11.12.3 Interrupt during Module Stop When module stop mode is entered with an interrupt being requested, the cause of an interrupt to the CPU cannot be cleared. Enter module stop mode after, for example, disabling an interrupt request.
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Section 11 8-Bit Timers
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Section 12 Watchdog Timer (WDT)
Section 12 Watchdog Timer (WDT)
The watchdog timer (WDT) is an 8-bit timer that can generate an internal reset signal for this LSI if a system crash prevents the CPU from writing to the timer counter, thus allowing it to overflow. When this watchdog function is not needed, the WDT can be used as an interval timer. In interval timer operation, an interval timer interrupt is generated each time the counter overflows. The block diagram of the WDT is shown in figures 12.1 to 12.3.
12.1
Features
* Selectable from eight counter input clocks for WDT_0 Selectable from 16 counter input clocks for WDT_1 * Switchable between watchdog timer mode and interval timer mode In watchdog timer mode * If the counter in WDT_0 overflows, it is possible to select whether this LSI is internally reset or not. * If the counter in WDT_1 overflows, it is possible to select whether this LSI is internally reset or the internal NMI interrupt is generated. In interval timer mode * If the counter overflows, the WDT generates an interval timer interrupt (WOVI).
WDT0105B_000020030700
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Section 12 Watchdog Timer (WDT)
Overflow WOVI0 (interrupt request signal) Interrupt control Clock Clock select
Internal reset signal*1
Reset control
/2 /64 /128 /512 /2048 /8192 /32768 /131072 Internal clock*2
RSTCSR
TCNT_0
TCSR_0 Bus interface
Module bus WDT
Legend: TCSR_0: Timer control/status register0 TCNT_0: Timer counter0 RSTCSR: Reset control/status register
Notes: 1. The type of internal reset signal depends on a register setting. 2. When a sub-clock is operating, will be SUB.
Figure 12.1 Block Diagram of WDT_0
WOVI1 (interrupt request signal) Internal NMI (interrupt request signal) Internal reset signal*
Interrupt control Reset control
Overflow
Clock
Clock select
/2 /64 /128 /512 /2048 /8192 /32768 /131072 Internal clock
SUB/2 SUB/4 SUB/8 SUB/16 SUB/32 SUB/64 SUB/128 SUB/256
TCNT_1
TCSR_1 Bus interface
Module bus WDT Legend: TCSR_1: Timer control/status register1 TCNT_1: Timer counter1 Note: * The type of internal reset signal depends on a register setting.
Figure 12.2 Block Diagram of WDT_1
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Internal bus
Internal bus
Section 12 Watchdog Timer (WDT)
12.2
Register Descriptions
The WDT has the following registers. To prevent accidental overwriting, TCSR and TCNT have to be written to by a different method to normal registers. For details, refer to section 12.5.1, Notes on Register Access. * Timer counter (TCNT) * Timer control/status register (TCSR) * Reset control/status register (RSTCSR) 12.2.1 Timer Counter (TCNT)
TCNT is an 8-bit readable/writable up-counter. TCNT is initialized to H'00 when the TME bit in TCSR is cleared to 0. 12.2.2 Timer Control/Status Register (TCSR)
TCSR functions include selecting the clock source to be input to TCNT and the timer mode. * TCSR_0
Bit 7 Bit Name OVF Initial Value 0 R/W R/(W) *1 Description Overflow Flag Indicates that TCNT has overflowed. Only a 0 can be written to this bit, to clear the flag. [Setting condition] When TCNT overflows (changes from H'FF to H'00) When internal reset request generation is selected in watchdog timer mode, OVF is cleared automatically by the internal reset. [Clearing condition] Cleared by reading TCSR* when OVF = 1, then writing 0 to OVF
2
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Section 12 Watchdog Timer (WDT) Initial Value 0
Bit 6
Bit Name WT/IT
R/W R/W
Description Timer Mode Select Selects whether the WDT is used as a watchdog timer or interval timer. 0: Interval timer mode (interval timer interrupt (WOVI) is requested to CPU) 1: Watchdog timer mode (internal reset selectable)
5
TME
0
R/W
Timer Enable When this bit is set to 1, TCNT starts counting. When this bit is cleared, TCNT stops counting and is initialized to H'00.
4, 3 2 1 0
CKS2 CKS1 CKS0
All 1 0 0 0
R/W R/W R/W
Reserved These bits are always read as 1 and cannot be modified. Clock Select 0 to 2 Selects the clock source to be input to TCNT. The 3 overflow frequency* for = 20 MHz is enclosed in parentheses. 000: Clock /2 (frequency: 25.6 s) 001: Clock /64 (frequency: 819.2 s) 010: Clock /128 (frequency: 1.6 ms) 011: Clock /512 (frequency: 6.6 ms) 100: Clock /2048 (frequency: 26.2 ms) 101: Clock /8192 (frequency: 104.9 ms) 110: Clock /32768 (frequency: 419.4 ms) 111: Clock /131072 (frequency: 1.68 s)
Notes: 1. Only 0 can be written, for flag clearing. 2. When the OVF flag is polled with the interval timer interrupt disabled, read the OVF bit while it is 1 at least twice. 3. The overflow period is the time from when TCNT starts counting up from H'00 until overflow occurs.
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Section 12 Watchdog Timer (WDT)
* TCSR_1
Bit 7 Bit Name OVF Initial Value 0 R/W R/(W) *1 Description Overflow Flag Indicates that TCNT has overflowed. Only a 0 can be written to this bit, to clear the flag. [Setting condition] When TCNT overflows (changes from H'FF to H'00) When internal reset request generation is selected in watchdog timer mode, OVF is cleared automatically by the internal reset. [Clearing conditions] Cleared by reading TCSR* when OVF = 1, then writing 0 to OVF
2
6
WT/IT
0
R/W
Timer Mode Select Selects whether the WDT is used as a watchdog timer or interval timer. 0: Interval timer mode (interval timer interrupt (WOVI) is requested to CPU) 1: Watchdog timer mode (internal reset or NMI interrupt is requested to CPU)
5
TME
0
R/W
Timer Enable When this bit is set to 1, TCNT starts counting. When this bit is cleared, TCNT stops counting and is initialized to H'00.
4
PSS
0
R/W
Prescaler Select Selects the clock source input to TCNT of WDT_1 0: TCNT counts divided clock of -base prescaler (PSM). 1: TCNT counts divided clock of SUB-base prescaler (PSS)
3
RST/NMI
0
R/W
Reset or NMI Selects either a power-on reset or the NMI interrupt request when TCNT overflows in watchdog timer mode. 0: NMI interrupt is requested 1: Reset is requested
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Section 12 Watchdog Timer (WDT) Initial Value 0 0 0
Bit 2 1 0
Bit Name CKS2 CKS1 CKS0
R/W R/W R/W R/W
Description Clock Select 0 to 2 Selects the clock source to be input to TCNT. The 3 overflow frequency* for = 20 MHz or SUB = 32.768 kHz is enclosed in parentheses. When PSS = 0: 000: Clock /2 (frequency: 25.6 s) 001: Clock /64 (frequency: 819.2 s) 010: Clock /128 (frequency: 1.6 ms) 011: Clock /512 (frequency: 6.6 ms) 100: Clock /2048 (frequency: 26.2 ms) 101: Clock /8192 (frequency: 104.9 ms) 110: Clock /32768 (frequency: 419.4 ms) 111: Clock /131072 (frequency: 1.68 s) When PSS = 1: 000: Clock SUB/2 (frequency: 15.6 ms) 001: Clock SUB/4 (frequency: 31.3 ms) 010: Clock SUB/8 (frequency: 62.5 ms) 011: Clock SUB/16 (frequency: 125 ms) 100: Clock SUB/32 (frequency: 250 ms) 101: Clock SUB/64 (frequency: 500 ms) 110: Clock SUB/128 (frequency: 1 s) 111: Clock SUB/256 (frequency: 2 s)
Notes: 1. Only 0 can be written, for flag clearing. 2. When the OVF flag is polled with the interval timer interrupt disabled, read the OVF bit while it is 1 at least twice 3. The overflow period is the time from when TCNT starts counting up from H'00 until overflow occurs.
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Section 12 Watchdog Timer (WDT)
12.2.3
Reset Control/Status Register (RSTCSR) (Only WDT_0)
RSTCSR controls the generation of the internal reset signal when TCNT overflows, and selects the type of internal reset signal. RSTCSR is initialized to H'1F by a reset signal from the RES pin, and not by the WDT internal reset signal caused by overflows.
Bit 7 Bit Name WOVF Initial Value 0 R/W Description This bit is set when TCNT overflows in watchdog timer mode. This bit cannot be set in interval timer mode, and only 0 can be written, to clear the flag. [Setting condition] Set when TCNT overflows (changed from H'FF to H'00) in watchdog timer mode [Clearing condition] Cleared by reading RSTCSR when WOVF = 1, and then writing 0 to WOVF 6 RSTE 0 R/W Reset Enable Specifies whether or not a reset signal is generated in the chip if TCNT overflows during watchdog timer operation. 0: Reset signal is not generated even if TCNT overflows (Though this LSI is not reset, TCNT and TCSR in WDT are reset) 1: Reset signal is generated if TCNT overflows 5 0 R/W Reserved This bit can be read from and written to. However, the write value should always be 0. 4 to 0 All 1 Reserved These bits are always read as 1 and cannot be modified. Note: * Only 0 can be written, to clear the flag.
R/(W)* Watchdog Overflow Flag
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Section 12 Watchdog Timer (WDT)
12.3
12.3.1
Operation
Watchdog Timer Mode
To use the WDT as a watchdog timer, set the WT/IT bit in TCSR and the TME bit to 1. Software must prevent TCNT overflows by rewriting the TCNT value (normally be writing H'00) before overflows occurs. Thus, TCNT does not overflow while the system is operating normally. When the WDT is used as a watchdog timer and the RSTE bit in RSTCSR of WDT_0 is set to 1, and if TCNT overflows without being rewritten because of a system malfunction or other error, an internal reset signal for this LSI is output for 518 system clocks. When the RST/NMI bit in TCSR of WDT_1 is set to 1, and if TCNT overflows, the internal reset signal is output for 516 system clock periods. When the RST/ NMI bit is cleared to 0, an NMI interrupt request is generated (for 515 or 516 system clock periods when the clock source is set to SUB (PSS = 1)). An internal reset request from the watchdog timer and a reset input from the RES pin are both treated as having the same vector. If a WDT internal reset request and the RES pin reset occur at the same time, the RES pin reset has priority and the WOVF bit in RSTCSR is cleared to 0. An NMI request from the watchdog timer and an interrupt request from the NMI pin are both treated as having the same vector. So, avoid handling an NMI request from the watchdog timer and an interrupt request from the NMI pin at the same time.
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Section 12 Watchdog Timer (WDT)
TCNT value Overflow H'FF
H'00 WT/IT = 1 TME = 1 Write H'00' to TCNT WOVF = 1 internal reset is generated
Internal reset signal* 518 system clock (WDT0) 515/516 system clock (WDT1)
Time WT/IT = 1 Write H'00' TME = 1 to TCNT
Legend: WT/IT: Timer mode select bit TME: Timer enable bit
Note: * In the case of WDT_0, the internal reset signal is generated only when the RSTE bit is set to 1. In the case of WDT_1,either the internal reset or the NMI interrupt is generated.
Figure 12.3 Watchdog Timer Mode Operation 12.3.2 Interval Timer Mode
To use the WDT as an internal timer, set the WT/IT and TME bits in TCSR to 0. When the WDT is used as an interval timer, an interval timer interrupt (WOVI) is generated each time the TCNT overflows. (The NMI interrupt request is not generated.) Therefore, an interrupt can be generated at intervals.
TCNT value H'FF Overflow Overflow Overflow Overflow
H'00 WT/IT = 0 TME = 1 WOVI WOVI WOVI WOVI
Time
Legend: WOVI: Interval timer interrupt request generation
Figure 12.4 Interval Timer Mode Operation
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Section 12 Watchdog Timer (WDT)
12.3.3
Timing of Setting Overflow Flag (OVF)
The OVF flag is set to 1 if TCNT overflows during interval timer operation. At the same time, an interval timer interrupt (WOVI) is requested. This timing is shown in figure 12.5.
TCNT
H'FF
H'00
Overflow signal (internal signal)
OVF
Figure 12.5 Timing of OVF Setting 12.3.4 Timing of Setting Watchdog Timer Overflow Flag (WOVF)
With WDT_0 the WOVF bit in RSTCSR is set to 1 if TCNT overflows in watchdog timer mode. If TCNT overflows while the RSTE bit in RSTCSR is set to 1, an internal is generated for the entire chip. (WOVI interrupt is not generated.) This timing is illustrated in figure 12.6.
TCNT
H'FF
H'00
Overflow signal (internal signal)
WOVF
Internal reset signal
518 states (WDT_0) 515/516 states (WDT_1)
Figure 12.6 Timing of WOVF Setting
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Section 12 Watchdog Timer (WDT)
12.4
Interrupt Sources
During interval timer mode operation, an overflow generates an interval timer interrupt (WOVI). The interval timer interrupt is requested whenever the OVF flag is set to 1 in TCSR. OVF must be cleared to 0 in the interrupt handling routine. If an NMI request has been chosen in the watchdog timer mode, an NMI request is generated when a TCNT overflow occurs. Table 12.1 WDT Interrupt Source
Name WOVI NMI Interrupt Source TCNT overflow (interval timer mode) TCNT overflow (watchdog timer mode) Interrupt Flag OVF OVF
12.5
12.5.1
Usage Notes
Notes on Register Access
The watchdog timer's TCNT and TCSR registers differ from other registers in being more difficult to write to. The procedures for writing to and reading these registers are given below. (1) Writing to TCNT and TCSR Word transfer instructions must be used to write to TCNT and TCSR. These registers cannot be written with byte transfer instructions. This is shown in figure 12.7. For writing, TCNT and TCSR are allocated to the same address. To write to TCNT, transfer a word in which the upper byte is H'5A and the lower byte is the write data. To write to TCSR, transfer a word in which the upper byte is H'A5 and the lower byte is the write data. When these transfer operations are performed, the lower byte data is written to TCNT or TCSR.
TCNT write 15 Address: H'FF74 H'5A 8 7 Write data 0
TCSR write 15 Address: H'FF74 H'A5 8 7 Write data 0
Figure 12.7 Writing to TCNT, TCSR (WDT_0)
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Section 12 Watchdog Timer (WDT)
(2) Writing to RSTCSR Use word transfer operations to write to RSTCSR. This register cannot be written using byte transfer instructions. This is shown in figure 12.8. The method used to write a 0 to the WOVF bit and the method used to write the RSTE and RSTS bits are different. To write a 0 to the WOVF bit, set the upper byte to H'A5 and the lower byte to H'00 and transfer that data. This will clear the WOVF bit to 0. This operation does not affect the RSTE and RSTS bits. To write the RSTE and RSTS bits, set the upper byte to H'5A and the lower byte to the data to be written and transfer that data. This will write the data in bits 6 and 5 of the lower byte to the RSTE and RSTS bits. This operation does not affect the WOVF bit.
When writing 0 to the WOVF bit 15 Address: H'FF76 H'A5 8 7 H'00 0
When writing to the RSTE and RSTS bits 15 Address: H'FF76 H'5A 8 7 Write data 0
Figure 12.8 Writing to RSTCSR (3) Reading TCNT, TCSR, and RSTCSR (WDT_0) _ These registers are read in the same way as other registers. The read addresses are H'FF74 for TCSR and H'FF77 for RSTCSR.
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Section 12 Watchdog Timer (WDT)
12.5.2
Contention between Timer Counter (TCNT) Write and Increment
If a timer counter clock pulse is generated during the T2 state of a TCNT write cycle, the write takes priority and the timer counter is not incremented. Figure 12.9 shows this operation.
TCNT write cycle T1 T2
Address
Internal write signal
TCNT input clock
TCNT
N
M
Counter write data
Figure 12.9 Contention between TCNT Write and Increment 12.5.3 Changing Value of CKS2 to CKS0
If bits CKS0 to CKS2 in TCSR are written to while the WDT is operating, errors could occur in the incrementation. Software must be used to stop the watchdog timer (by clearing the TME bit to 0) before changing the value of bits CKS0 to CKS2. 12.5.4 Switching between Watchdog Timer Mode and Interval Timer Mode
If the mode is switched from watchdog timer to interval timer while the WDT is operating, errors could occur in the incrementation. Software must be used to stop the watchdog timer (by clearing the TME bit to 0) before switching the mode.
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Section 12 Watchdog Timer (WDT)
12.5.5
Internal Reset in Watchdog Timer Mode
This LSI is not reset internally if TCNT overflows while the RSTE bit is cleared to 0 during watchdog timer operation, however TCNT_0 and TCSR_0 of the WDT_0 are reset. TCNT, TCSR, or RSTCR cannot be written to for 132 states following an overflow. During this period, any attempt to read the WOVF flag is not acknowledged. Accordingly, wait 132 states after overflow to write 0 to the WOVF flag for clearing. 12.5.6 OVF Flag Clearing in Interval Timer Mode
When the OVF flag setting conflicts with the OVF flag reading in interval timer mode, writing 0 to the OVF bit may not clear the flag even though the OVF bit has been read while it is 1. If there is a possibility that the OVF flag setting and reading will conflict, such as when the OVF flag is polled with the interval timer interrupt disabled, read the OVF bit while it is 1 at least twice before writing 0 to the OVF bit to clear the flag.
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Section 13 Serial Communication Interface (SCI)
Section 13 Serial Communication Interface (SCI)
This LSI has three independent serial communication interface (SCI) channels. The SCI can handle both asynchronous and clocked synchronous serial communication. Serial data communication can be carried out using standard asynchronous communication chips such as a Universal Asynchronous Receiver/Transmitter (UART) or an Asynchronous Communication Interface Adapter (ACIA). A function is also provided for serial communication between processors (multiprocessor communication function). The SCI also supports an IC card (Smart Card) interface conforming to ISO/IEC 7816-3 (Identification Card) as a serial communication interface extension function.
13.1
Features
* Choice of asynchronous or clocked synchronous serial communication mode * Full-duplex communication capability The transmitter and receiver are mutually independent, enabling transmission and reception to be executed simultaneously. Double-buffering is used in both the transmitter and the receiver, enabling continuous transmission and continuous reception of serial data. * On-chip baud rate generator allows any bit rate to be selected External clock can be selected as a transfer clock source (except for in Smart Card interface mode). * Choice of LSB-first or MSB-first transfer (except in the case of asynchronous mode 7-bit data) * Four interrupt sources Transmit-end, transmit-data-empty, receive-data-full, and receive error that can issue requests. The transmit-data-empty interrupt and receive data full interrupts can be used to activate the data transfer controller (DTC) (H8S/2268 Group only). * Module stop mode can be set Asynchronous Mode * Data length: 7 or 8 bits * Stop bit length: 1 or 2 bits * Parity: Even, odd, or none * Receive error detection: Parity, overrun, and framing errors * Break detection: Break can be detected by reading the RxD pin level directly in the case of a framing error
SCI0025B_000020020700
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Section 13 Serial Communication Interface (SCI)
* Average transfer rate generator (SCI_0): 720 kbps, 460.784 kbps, or 115.196 kbps can be selected at 16 MHz operation. * Transfer rate clock can be input from the TPU (SCI_0). * Communications between multi-processors are possible. Clocked Synchronous Mode * Data length: 8 bits * Receive error detection: Overrun errors detected Smart Card Interface * Automatic transmission of error signal (parity error) in receive mode * Error signal detection and automatic data retransmission in transmit mode * Direct convention and inverse convention both supported
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Section 13 Serial Communication Interface (SCI)
Figure 13.1 shows a block diagram of the SCI_0, and figure 13.2 shows that of the SCI1 and SCI_2.
Bus interface
Module data bus
Internal data bus
RDR
TDR
SCMR SSR SCR SMR SEMR
BRR
Baud rate generator /4 /16 /64
RxD0 TxD0
RSR
TSR
Transmission/ reception control
Parity generation Parity check
Clock
TEI TXI RXI ERI
SCK0
External clock
Average transfer rate generator 10.667 MHz operation 115.152 kbps 460.606 kbps 16 MHz operation 115.196 kbps 460.784 kbps 720 kbps
TIOCA1 TCLKA TIOCA2 TPU
Legend: RSR: Receive shift register RDR: Receive data register TSR: Transmit shift register TDR: Transmit data register SMR: Serial mode register
SCR: SSR: SCMR: BRR: SEMR:
Serial control register Serial status register Smart card mode register Bit rate register Serial expansion mode register
Figure 13.1 Block Diagram of SCI_0
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Section 13 Serial Communication Interface (SCI)
Bus interface
Module data bus
Internal data bus
RDR
TDR
SCMR SSR SCR
BRR Baud rate generator /4 /16 /64 Clock
RxD
RSR
TSR
SMR
Transmission/ reception control
TxD
Parity generation Parity check
SCK
External clock TEI TXI RXI ERI
Legend: RSR: RDR: TSR: TDR: SMR: SCR: SSR: SCMR: BRR:
Receive shift register Receive data register Transmit shift register Transmit data register Serial mode register Serial control register Serial status register Smart card mode register Bit rate register
Figure 13.2 Block Diagram of SCI_1 or SCI_2
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Section 13 Serial Communication Interface (SCI)
13.2
Input/Output Pins
Table 13.1 shows the pin configuration for each SCI channel. Table 13.1 Pin Configuration
Channel 0 Pin Name* SCK0 RxD0 TxD0 1 SCK1 RxD1 TxD1 2 SCK2 RxD2 TxD2 I/O I/O Input Output I/O Input Output I/O Input Output Function SCI0 clock input/output SCI0 receive data input SCI0 transmit data output SCI1 clock input/output SCI1 receive data input SCI1 transmit data output SCI2 clock input/output SCI2 receive data input SCI2 transmit data output
Note: * Pin names SCK, RxD, and TxD are used in the text for all channels, omitting the channel designation.
13.3
Register Descriptions
The SCI has the following registers for each channel. For details on register addresses and register states during each process, refer to Section 24, List of Registers. The serial mode register (SMR), serial status register (SSR), and serial control register (SCR) are described separately for normal serial communication interface mode and Smart Card interface mode because their bit functions differ in part. * Receive Shift Register (RSR) * Receive Data Register (RDR) * Transmit Data Register (TDR) * Transmit Shift Register (TSR) * Serial Mode Register (SMR) * Serial Control Register (SCR) * Serial Status Register (SSR) * Smart Card Mode Register (SCMR) * Bit Rate Register (BRR)
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Section 13 Serial Communication Interface (SCI)
Other than the above registers, SCI_0 has the following register. * Serial Expansion Mode Register (SEMR0) 13.3.1 Receive Shift Register (RSR)
RSR is a shift register that is used to receive serial data input to the RxD pin and convert it into parallel data. When one byte of data has been received, it is transferred to RDR automatically. RSR cannot be directly accessed by the CPU. 13.3.2 Receive Data Register (RDR)
RDR is an 8-bit register that stores received data. When the SCI has received one byte of serial data, it transfers the received serial data from RSR to RDR, where it is stored. After this, RSR is receive-enabled. As RSR and RDR function as a double buffer in this way, continuous receive operations are possible. After confirming that the RDRF bit in SSR is set to 1, read RDR only once. RDR cannot be written to by the CPU. RDR is initialized to H'00 by a reset, in standby mode, watch mode,subactive mode, subsleep mode or module stop mode. 13.3.3 Transmit Data Register (TDR)
TDR is an 8-bit register that stores data for transmission. When the SCI detects that TSR is empty, it transfers the transmit data written in TDR to TSR and starts transmission. The double-buffered structure of TDR and TSR enables continuous serial transmission. If the next transmit data has already been written to TDR during serial transmission, the SCI transfers the written data to TSR to continue transmission. Although TDR can be read or written to by the CPU at all times, to achieve reliable serial transmission, write transmit data to TDR only once after confirming that the TDRE bit in SSR is set to 1. TDR is initialized to H'FF by a reset, in standby mode, watch mode, subactive mode, subsleep mode or module stop mode.
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Section 13 Serial Communication Interface (SCI)
13.3.4
Transmit Shift Register (TSR)
TSR is a shift register that transmits serial data. To perform serial data transmission, the SCI first transfers transmit data from TDR to TSR, then sends the data to the TxD pin. TSR cannot be directly accessed by the CPU. 13.3.5 Serial Mode Register (SMR)
SMR is used to set the SCI's serial transfer format and select the baud rate generator clock source. Some bit functions of SMR differ between normal serial communication interface mode and Smart Card interface mode. * Normal Serial Communication Interface Mode (When SMIF in SCMR is 0)
Bit 7 Bit Name C/A Initial Value 0 R/W R/W Description Communication Mode 0: Asynchronous mode 1: Clocked synchronous mode 6 CHR 0 R/W Character Length (enabled only in asynchronous mode) 0: Selects 8 bits as the data length. 1: Selects 7 bits as the data length. LSB-first is fixed and the MSB (bit 7) of TDR is not transmitted in transmission. In clocked synchronous mode, a fixed data length of 8 bits is used. 5 PE 0 R/W Parity Enable (enabled only in asynchronous mode) When this bit is set to 1, the parity bit is added to transmit data before transmission, and the parity bit is checked in reception. For a multiprocessor format, parity bit addition and checking are not performed regardless of the PE bit setting.
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Section 13 Serial Communication Interface (SCI) Initial Value 0
Bit 4
Bit Name O/E
R/W R/W
Description Parity Mode (enabled only when the PE bit is 1 in asynchronous mode) 0: Selects even parity. When even parity is set, parity bit addition is performed in transmission so that the total number of 1 bits in the transmit character plus the parity bit is even. In reception, a check is performed to see if the total number of 1 bits in the receive character plus parity bit is even. 1: Selects odd parity. When odd parity is set, parity bit addition is performed in transmission so that the total number of 1 bits in the transmit character plus the parity bit is odd. In reception, a check is performed to see if the total number of 1 bits in the receive character plus the parity bit is odd.
3
STOP
0
R/W
Stop Bit Length (enabled only in asynchronous mode) Selects the stop bit length in transmission. 0: 1 stop bit 1: 2 stop bits In reception, only the first stop bit is checked. If the second stop bit is 0, it is treated as the start bit of the next transmit character.
2
MP
0
R/W
Multiprocessor Mode (enabled only in asynchronous mode) When this bit is set to 1, the multiprocessor communication function is enabled. The PE bit and O/E bit settings are invalid in multiprocessor mode. For details, see 13.5, Multiprocessor Communication Function.
1 0
CKS1 CKS0
0 0
R/W R/W
Clock Select 0 and 1 These bits select the clock source for the baud rate generator. 00: clock (n = 0) 01: /4 clock (n = 1) 10: /16 clock (n = 2) 11: /64 clock (n = 3) For the relationship between the bit rate register setting and the baud rate, see section 13.3.9, Bit Rate Register (BRR). n is the decimal representation of the value of n in BRR (see section 13.3.9, Bit Rate Register (BRR)).
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Section 13 Serial Communication Interface (SCI)
* Smart Card Interface Mode (When SMIF in SCMR Is 1)
Bit 7 Bit Name GM Initial Value 0 R/W R/W Description GSM Mode When this bit is set to 1, the SCI operates in GSM mode. In GSM mode, the timing of the TEND setting is advanced by 11.0 etu (Elementary Time Unit: the time for transfer of one bit), and clock output control mode addition is performed. For details, refer to section 13.7.8, Clock Output Control. 0: Normal smart card interface mode operation (initial value) * The TEND flag is generated 12.5 etu (11.5 etu in the block transfer mode) after the beginning of the start bit. * Clock output on/off control only 1: GSM mode operation in smart card interface mode * The TEND flag is generated 11.0 etu after the beginning of the start bit. * In addition to clock output on/off control, high/low fixed control is supported (set using SCR). 6 BLK 0 R/W When this bit is set to 1, the SCI operates in block transfer mode. For details on block transfer mode, refer to section 13.7.3, Block Transfer Mode. 0: Normal smart card interface mode operation (initial value) * Error signal transmission, detection, and automatic data retransmission are performed. * The TXI interrupt is generated by the TEND flag. * The TEND flag is set 12.5 etu (11.0 etu in the GSM mode) after transmission starts. 1: Operation in block transfer mode * Error signal transmission, detection, and automatic data retransmission are not performed. * The TXI interrupt is generated by the TDRE flag. * The TEND flag is set 11.5 etu (11.0 etu in the GSM mode) after transmission starts.
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Section 13 Serial Communication Interface (SCI) Initial Value 0
Bit 5
Bit Name PE
R/W R/W
Description Parity Enable (enabled only in asynchronous mode) When this bit is set to 1, the parity bit is added to transmit data in transmission, and the parity bit is checked in reception. In Smart Card interface mode, this bit must be set to 1.
4
O/E
0
R/W
Parity Mode (enabled only when the PE bit is 1 in asynchronous mode) 0: Selects even parity. 1: Selects odd parity. For details on setting this bit in Smart Card interface mode, refer to section 13.7.2, Data Format (Except for Block Transfer Mode).
3 2
BCP1 BCP0
0 0
R/W R/W
Basic Clock Pulse 0 and 1 These bits specify the number of basic clock periods in a 1-bit transfer interval on the Smart Card interface. 00: 32 clock (S = 32) 01: 64 clock (S = 64) 10: 372 clock (S = 372) 11: 256 clock (S = 256) For details, refer to section 13.7.4, Receive Data Sampling Timing and Reception Margin in Smart Card Interface Mode. S stands for the value of S in BRR (see section 13.3.9, Bit Rate Register (BRR)).
1 0
CKS1 CKS0
0 0
R/W R/W
Clock Select 0 and 1 These bits select the clock source for the baud rate generator. 00: clock (n = 0) 01: /4 clock (n = 1) 10: /16 clock (n = 2) 11: /64 clock (n = 3) For the relationship between the bit rate register setting and the baud rate, see section 13.3.9, Bit Rate Register (BRR). n is the decimal representation of the value of n in BRR (see section 13.3.9, Bit Rate Register (BRR)).
Note: etu (Elementary Time Unit): Abbreviation for the transfer period for one bit.
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Section 13 Serial Communication Interface (SCI)
13.3.6
Serial Control Register (SCR)
SCR is a register that enables or disables SCI transfer operations and interrupt requests, and is also used to selection of the transfer clock source. For details on interrupt requests, refer to section 13.8, Interrupt Sources. Some bit functions of SCR differ between normal serial communication interface mode and Smart Card interface mode. * Normal Serial Communication Interface Mode (When SMIF in SCMR Is 0)
Bit 7 Bit Name TIE Initial Value 0 R/W R/W Description Transmit Interrupt Enable When this bit is set to 1, the TXI interrupt request is enabled. TXI interrupt request cancellation can be performed by reading 1 from the TDRE flag in SSR, then clearing it to 0, or clearing the TIE bit to 0. 6 RIE 0 R/W Receive Interrupt Enable When this bit is set to 1, RXI and ERI interrupt requests are enabled. RXI and ERI interrupt request cancellation can be performed by reading 1 from the RDRF, FER, PER, or ORER flag in SSR, then clearing the flag to 0, or clearing the RIE bit to 0. 5 TE 0 R/W Transmit Enable When this bit s set to 1, transmission is enabled. In this state, serial transmission is started when transmit data is written to TDR and the TDRE flag in SSR is cleared to 0. SMR setting must be performed to decide the transfer format before setting the TE bit to 1. When this bit is cleared to 0, the transmission operation is disabled, and the TDRE flag is fixed at 1.
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Section 13 Serial Communication Interface (SCI) Initial Value 0
Bit 4
Bit Name RE
R/W R/W
Description Receive Enable When this bit is set to 1, reception is enabled. Serial reception is started in this state when a start bit is detected in asynchronous mode or serial clock input is detected in clocked synchronous mode. SMR setting must be performed to decide the reception format before setting the RE bit to 1. Clearing the RE bit to 0 does not affect the RDRF, FER,PER, and ORER flags, which retain their states.
3
MPIE
0
R/W
Multiprocessor Interrupt Enable (enabled only when the MP bit in SMR is 1 in asynchronous mode) When this bit is set to 1, receive data in which the multiprocessor bit is 0 is skipped, and setting of the RDRF, FER, and ORER status flags in SSR is prohibited. On receiving data in which the multiprocessor bit is 1, this bit is automatically cleared and normal reception is resumed. For details, refer to section 13.5, Multiprocessor Communication Function. When receive data including MPB = 0 is received, receive data transfer from RSR to RDR, receive error detection, and setting of the RERF, FER, and ORER flags in SSR, are not performed. When receive data including MPB = 1 is received, the MPB bit in SSR is set to 1, the MPIE bit is cleared to 0 automatically, and generation of RXI and ERI interrupts (when the TIE and RIE bits in SCR are set to 1) and FER and ORER flag setting are enabled.
2
TEIE
0
R/W
Transmit End Interrupt Enable This bit is set to 1, TEI interrupt request is enabled. TEI cancellation can be performed by reading 1 from the TDRE flag in SSR, then clearing it to 0 and clearing the TEND flag to 0, or clearing the TEIE bit to 0.
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Section 13 Serial Communication Interface (SCI) Initial Value 0 0
Bit 1 0
Bit Name CKE1 CKE0
R/W R/W R/W
Description Clock Enable 0 and 1 Selects the clock source and SCK pin function. Asynchronous mode 00: On-chip baud rate generator SCK pin functions as I/O port 01: On-chip baud rate generator Outputs a clock of the same frequency as the bit rate from the SCK pin. 1X: External clock Inputs a clock with a frequency 16 times the bit rate from the SCK pin. Clocked synchronous mode 0X: Internal clock (SCK pin functions as clock output) 1X: External clock (SCK pin functions as clock input)
Legend: X: Don't care
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Section 13 Serial Communication Interface (SCI)
* Smart Card Interface Mode (When SMIF in SCMR Is 1)
Bit 7 Bit Name TIE Initial Value 0 R/W R/W Description Transmit Interrupt Enable When this bit is set to 1, TXI interrupt request is enabled. TXI interrupt request cancellation can be performed by reading 1 from the TDRE flag in SSR, then clearing it to 0, or clearing the TIE bit to 0. 6 RIE 0 R/W Receive Interrupt Enable When this bit is set to 1, RXI and ERI interrupt requests are enabled. RXI and ERI interrupt request cancellation can be performed by reading 1 from the RDRF, FER, PER, or ORER flag in SSR, then clearing the flag to 0, or clearing the RIE bit to 0. 5 TE 0 R/W Transmit Enable When this bit s set to 1, transmission is enabled. In this state, serial transmission is started when transmit data is written to TDR and the TDRE flag in SSR is cleared to 0. SMR setting must be performed to decide the transfer format before setting the TE bit to 1. When this bit is cleared to 0, the transmission operation is disabled, and the TDRE flag is fixed at 1. 4 RE 0 R/W Receive Enable When this bit is set to 1, reception is enabled. Serial reception is started in this state when a start bit is detected in asynchronous mode or serial clock input is detected in clocked synchronous mode. SMR setting must be performed to decide the reception format before setting the RE bit to 1. Clearing the RE bit to 0 does not affect the RDRF, FER,PER, and ORER flags, which retain their states.
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Section 13 Serial Communication Interface (SCI) Initial Value 0
Bit 3
Bit Name MPIE
R/W R/W
Description Multiprocessor Interrupt Enable (enabled only when the MP bit in SMR is 1 in asynchronous mode) Write 0 to this bit in Smart Card interface mode. When receive data including MPB = 0 is received, receive data transfer from RSR to RDR, receive error detection, and setting of the RERF, FER, and ORER flags in SSR, are not performed. When receive data including MPB = 1 is received, the MPB bit in SSR is set to 1, the MPIE bit is cleared to 0 automatically, and generation of RXI and ERI interrupts (when the TIE and RIE bits in SCR are set to 1) and FER and ORER flag setting are enabled.
2
TEIE
0
R/W
Transmit End Interrupt Enable Write 0 to this bit in Smart Card interface mode. TEI cancellation can be performed by reading 1 from the TDRE flag in SSR, then clearing it to 0 and clearing the TEND flag to 0, or clearing the TEIE bit to 0.
1 0
CKE1 CKE0
0 0
R/W
Clock Enable 0 and 1 Enables or disables clock output from the SCK pin. The clock output can be dynamically switched in GSM mode. For details, refer to section 13.7.8, Clock Output Control. When the GM bit in SMR is 0: 00: Output disabled (SCK pin can be used as an I/O port pin) 01: Clock output 1X: Reserved When the GM bit in SMR is 1: 00: Output fixed low 01: Clock output 10: Output fixed high 11: Clock output
Legend: X: Don't care
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Section 13 Serial Communication Interface (SCI)
13.3.7
Serial Status Register (SSR)
SSR is a register containing status flags of the SCI and multiprocessor bits for transfer. 1 cannot be written to flags TDRE, RDRF, ORER, PER, and FER; they can only be cleared. Some bit functions of SSR differ between normal serial communication interface mode and Smart Card interface mode. * Normal Serial Communication Interface Mode (When SMIF in SCMR Is 0)
Bit 7 Bit Name TDRE Initial Value 1 R/W R/(W) *1 Description Transmit Data Register Empty Displays whether TDR contains transmit data. [Setting conditions] * * When the TE bit in SCR is 0 When data is transferred from TDR to TSR and data can be written to TDR When 0 is written to TDRE after reading TDRE = 1 2 When the DTC* is activated by a TXI interrupt request and writes data to TDR (H8S/2268 Group only) 6 RDRF 0
1 R/(W)* Receive Data Register Full
[Clearing conditions] * *
Indicates that the received data is stored in RDR. [Setting condition] When serial reception ends normally and receive data is transferred from RSR to RDR [Clearing conditions] * * When 0 is written to RDRF after reading RDRF = 1 2 When the DTC* is activated by an RXI interrupt and transferred data from RDR (H8S/2268 Group only) The RDRF flag is not affected and retains their previous values when the RE bit in SCR is cleared to 0. If reception of the next data is completed while the RDRF flag is still set to 1, an overrun error will occur and the receive data will be lost.
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Section 13 Serial Communication Interface (SCI) Initial Value 0
Bit 5
Bit Name ORER
R/W R/(W) *1
Description Overrun Error Indicates that an overrun error occurred during reception, causing abnormal termination. [Setting condition] When the next serial reception is completed while RDRF =1 The receive data prior to the overrun error is retained in RDR, and the data received subsequently is lost. Also, subsequent serial reception cannot be continued while the ORER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued either. [Clearing condition] When 0 is written to ORER after reading ORER = 1 The ORER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0.
4
FER
0
R/(W)* Framing Error
1
Indicates that a framing error occurred during reception in asynchronous mode, causing abnormal termination. [Setting condition] When the stop bit is 0 In 2 stop bit mode, only the first stop bit is checked for a value to 1; the second stop bit is not checked. If a framing error occurs, the receive data is transferred to RDR but the RDRF flag is not set. Also, subsequent serial reception cannot be continued while the FER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] When 0 is written to FER after reading FER = 1 In 2-stop-bit mode, only the first stop bit is checked. The FER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0.
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Section 13 Serial Communication Interface (SCI) Initial Value 0
Bit 3
Bit Name PER
R/W R/(W) *1
Description Parity Error Indicates that a parity error occurred during reception using parity addition in asynchronous mode, causing abnormal termination. [Setting condition] When a parity error is detected during reception If a parity error occurs, the receive data is transferred to RDR but the RDRF flag is not set. Also, subsequent serial reception cannot be continued while the PER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] When 0 is written to PER after reading PER = 1 The PER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0.
2
TEND
1
R
Transmit End Indicates that transmission has been ended. [Setting conditions] * * When the TE bit in SCR is 0 When TDRE = 1 at transmission of the last bit of a 1byte serial transmit character When 0 is written to TDRE after reading TDRE = 1 When the DTC is activated by a TXI interrupt request and transfer transmission data to TDR (H8S/2268 Group only)
[Clearing conditions] * *
1
MPB
0
R
Multiprocessor Bit MPB stores the multiprocessor bit in the receive data. When the RE bit in SCR is cleared to 0 its previous state is retained.
0
MPBT
0
R/W
Multiprocessor Bit Transfer MPBT stores the multiprocessor bit to be added to the transmit data.
Notes: 1. Only a 0 can be written to this bit, to clear the flag. 2. This bit is cleared by DTC only when DISEL = 0 with the transfer counter other than 0.
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Section 13 Serial Communication Interface (SCI)
* Smart Card Interface Mode (When SMIF in SCMR Is 1)
Bit 7 Bit Name TDRE Initial Value 1 R/W Description Indicates whether TDR contains transmit data. [Setting conditions] * * When the TE bit in SCR is 0 When data is transferred from TDR to TSR and data can be written to TDR When 0 is written to TDRE after reading TDRE = 1 When the DTC is activated by a TXI interrupt request and writes data to TDR (H8S/2268 Group only)
R/(W)* Transmit Data Register Empty
[Clearing conditions] * * 6 RDRF 0
R/(W)* Receive Data Register Full Indicates that the received data is stored in RDR. [Setting condition] When serial reception ends normally and receive data is transferred from RSR to RDR [Clearing conditions] * * When 0 is written to RDRF after reading RDRF = 1 When the DTC is activated by an RXI interrupt and transferred data from RDR (H8S/2268 Group only)
The RDRF flag is not affected and retains their previous values when the RE bit in SCR is cleared to 0. If reception of the next data is completed while the RDRF flag is still set to 1, an overrun error will occur and the receive data will be lost.
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Section 13 Serial Communication Interface (SCI) Initial Value 0
Bit 5
Bit Name ORER
R/W
Description Indicates that an overrun error occurred during reception, causing abnormal termination. [Setting condition] When the next serial reception is completed while RDRF =1 The receive data prior to the overrun error is retained in RDR, and the data received subsequently is lost. Also, subsequent serial cannot be continued while the ORER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] When 0 is written to ORER after reading ORER = 1 The ORER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0.
R/(W)* Overrun Error
4
ERS
0
R/(W)* Error Signal Status Indicates that the status of an error, signal 1 returned from the reception side at reception [Setting condition] When the low level of the error signal is sampled [Clearing condition] When 0 is written to ERS after reading ERS = 1 The ERS flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0.
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Section 13 Serial Communication Interface (SCI) Initial Value 0
Bit 3
Bit Name PER
R/W
Description Indicates that a parity error occurred during reception using parity addition in asynchronous mode, causing abnormal termination. [Setting condition] When a parity error is detected during reception If a parity error occurs, the receive data is transferred to RDR but the RDRF flag is not set. Also, subsequent serial reception cannot be continued while the PER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] When 0 is written to PER after reading PER = 1 The PER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0.
R/(W)* Parity Error
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Section 13 Serial Communication Interface (SCI) Initial Value 1
Bit 2
Bit Name TEND
R/W R
Description Transmit End This bit is set to 1 when no error signal has been sent back from the receiving end and the next transmit data is ready to be transferred to TDR. [Setting conditions] * * When the TE bit in SCR is 0 and the ERS bit is also 0 When the ERS bit is 0 and the TDRE bit is 1 after the specified interval following transmission of 1-byte data.
The timing of bit setting differs according to the register setting as follows: When GM = 0 and BLK = 0, 12.5 etu after transmission starts When GM = 0 and BLK = 1, 11.5 etu after transmission starts When GM = 1 and BLK = 0, 11.0 etu after transmission starts When GM = 1 and BLK = 1, 11.0 etu after transmission starts [Clearing conditions] * * When 0 is written to TDRE after reading TDRE = 1 When the DTC is activated by a TXI interrupt and transfers transmission data to TDR (H8S/2268 Group only)
1 0
MPB MPBT
0 0
R R/W
Multiprocessor Bit This bit is not used in Smart Card interface mode. Multiprocessor Bit Transfer Write 0 to this bit in Smart Card interface mode.
Note: Only 0 can be written to this bit, to clear the flag.
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Section 13 Serial Communication Interface (SCI)
13.3.8
Smart Card Mode Register (SCMR)
SCMR is a register that selects Smart Card interface mode and transfer format.
Bit 7 to 4 3 Bit Name SDIR Initial Value All 1 0 R/W R/W Description Reserved These bits are always read as 1, and cannot be modified. Smart Card Data Transfer Direction Selects the serial/parallel conversion format. 0: LSB-first in transfer 1: MSB-first in transfer The bit setting is valid only when the transfer data format is 8 bits. For 7-bit data, LSB-first is fixed. 2 SINV 0 R/W Smart Card Data Invert Specifies inversion of the data logic level. The SINV bit does not affect the logic level of the parity bit. To invert the parity bit, invert the O/E bit in SMR. 0: TDR contents are transmitted as they are. Receive data is stored as it is in RDR 1: TDR contents are inverted before being transmitted. Receive data is stored in inverted form in RDR 1 0 SMIF 1 0 R/W Reserved This bit is always read as 1, and cannot be modified. Smart Card Interface Mode Select This bit is set to 1 to make the SCI operate in Smart Card interface mode. 0: Normal asynchronous mode or clocked synchronous mode 1: Smart card interface mode
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Section 13 Serial Communication Interface (SCI)
13.3.9
Bit Rate Register (BRR)
BRR is an 8-bit register that adjusts the bit rate. As the SCI performs baud rate generator control independently for each channel, different bit rates can be set for each channel. Table 13.2 shows the relationships between the N setting in BRR and bit rate B for normal asynchronous mode, clocked synchronous mode, and Smart Card interface mode. The initial value of BRR is H'FF, and it can be read or written to by the CPU at all times. Table 13.2 The Relationships between the N Setting in BRR and Bit Rate B
Communication Mode Asynchronous Mode ABCS bit 0 1 Clocked Synchronous Mode Smart Card Interface Mode Bit Rate
B= x 106 64 x 2 2n-1 x (N + 1) x 106 32 x 2 2n-1 x (N + 1) x 106 8 x 2 2n-1 x (N + 1) x 106 S x 2 2n+1 x (N + 1)
Error
Error (%) = { x 106 B x 64 x 2 2n-1 x (N + 1) x 106 B x 32 x 2 2n-1 x (N + 1) -1 } x 100
B=
Error (%) = {
-1 } x 100
B=
x 106 B x S x 2 2n+1 x (N + 1)
B=
Error (%) = {
-1 } x 100
Note: B: Bit rate (bit/s) N: BRR setting for baud rate generator (0 N 255) : Operating frequency (MHz) n and S: Determined by the SMR settings shown in the following tables. SMR Setting CKS1 0 0 1 1 CKS0 0 1 0 1 SMR Setting n 0 1 2 3 BCP1 0 0 1 1 BCP0 0 1 0 1 S 32 64 372 256
Clock Source /4 /16 /64
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Section 13 Serial Communication Interface (SCI)
Table 13.3 shows sample N settings in BRR in normal asynchronous mode. Table 13.4 shows the maximum bit rate for each frequency in normal asynchronous mode. Table 13.6 shows sample N settings in BRR in clocked synchronous mode. Table 13.8 shows sample N settings in BRR in Smart Card interface mode. In Smart Card interface mode, S (the number of basic clock periods in a 1-bit transfer interval) can be selected. For details, refer to section 13.7.4, Receive Data Sampling Timing and Reception Margin. Tables 13.5 and 13.7 show the maximum bit rates with external clock input. When the ABCS bit in SEMR_0 of SCI_0 is set to 1 in asynchronous mode, the maximum bit rate is twice the value shown in tables 13.4 and 13.5. Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode) (1)
Operating Frequency (MHz) 2 Bit Rate (bps) n 110 150 300 600 1200 2400 4800 9600 19200 31250 38400 1 1 0 0 0 0 0 0 N Error (%) n 1 1 0 0 0 0 0 0 2.097152 N Error (%) n 1 1 0 0 0 0 0 0 0 0 2.4576 N 174 127 255 127 63 31 15 7 3 1 Error (%) -0.26 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 n 1 1 1 0 0 0 0 0 0 0 N 212 155 77 155 77 38 19 9 4 2 3 Error (%) 0.33 0.16 0.16 0.16 0.16 0.16 -2.34 -2.34 -2.34 0.00
141 0.03 103 0.16 207 0.16 103 0.16 51 25 12 1 0.16 0.16 0.16 0.00
148 -0.04 108 0.21 217 0.21 108 0.21 54 26 13 6 -0.70 1.14 -2.48 -2.48
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Section 13 Serial Communication Interface (SCI)
Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode) (2)
Operating Frequency (MHz) 3.6864 Bit Rate (bps) n 110 150 300 600 1200 2400 4800 9600 19200 31250 38400 2 1 1 0 0 0 0 0 0 0 N 64 191 95 191 95 47 23 11 5 2 Error (%) 0.70 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 n 2 1 1 0 0 0 0 0 0 N 70 4 Error (%) 0.33 n 2 2 1 1 0 0 0 0 0 0 0 4.9152 N 86 255 127 255 127 63 31 15 7 4 3 Error (%) 0.31 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 -1.70 0.00 n 2 2 1 1 0 0 0 0 0 0 0 N 88 64 129 64 129 64 32 15 7 4 3 5 Error (%) -0.25 0.16 0.16 0.16 0.16 0.16 -1.36 1.73 1.73 0.00 1.73
207 0.16 103 0.16 207 0.16 103 0.16 51 25 12 3 0.16 0.16 0.16 0.00
Operating Frequency (MHz) 6 Bit Rate (bps) N 110 150 300 600 1200 2400 4800 9600 19200 31250 38400 2 2 1 1 0 0 0 0 0 0 0 N 106 77 155 77 155 77 38 19 9 5 4 Error (%) -0.44 0.16 0.16 0.16 0.16 0.16 0.16 -2.34 -2.34 0.00 -2.34 n 2 2 1 1 0 0 0 0 0 0 0 N 79 79 79 39 19 9 5 4 6.144 Error (%) 0.00 0.00 0.00 0.00 0.00 0.00 2.40 0.00 n 2 2 1 1 0 0 0 0 0 0 7.3728 N 130 95 191 95 191 95 47 23 11 5 Error (%) -0.07 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 n 2 2 1 1 0 0 0 0 0 0 N 141 103 207 103 207 103 51 25 12 7 8 Error (%) 0.03 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.00
108 0.08 159 0.00 159 0.00
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Section 13 Serial Communication Interface (SCI)
Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode) (3)
Operating Frequency (MHz) 9.8304 Bit Rate (bps) n 110 150 300 600 1200 2400 4800 9600 19200 31250 38400 2 2 1 1 0 0 0 0 0 0 0 N 174 127 255 127 255 127 63 31 15 9 7 Error (%) -0.26 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 -1.70 0.00 n 2 2 2 1 1 0 0 0 0 0 0 N 177 129 64 129 64 129 64 32 15 9 7 10 Error (%) -0.25 0.16 0.16 0.16 0.16 0.16 0.16 -1.36 1.73 0.00 1.73 n 2 2 2 1 1 0 0 0 0 0 0 N 212 155 77 155 77 155 77 38 19 11 9 12 Error (%) 0.03 0.16 0.16 0.16 0.16 0.16 0.16 0.16 -2.34 0.00 -2.34 n 2 2 2 1 1 0 0 0 0 0 0 12.288 N 217 159 79 159 79 159 79 39 19 11 9 Error (%) 0.08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.40 0.00
Operating Frequency (MHz) 14 Bit Rate (bps) 110 150 300 600 1200 2400 4800 9600 19200 31250 38400 2 2 2 1 1 0 0 0 0 0 n N 248 181 90 181 90 181 90 45 22 13 Error (%) -0.17 0.16 0.16 0.16 0.16 0.16 0.16 -0.93 -0.93 0.00 3 2 2 1 1 0 0 0 0 0 n 14.7456 N 64 191 95 191 95 191 95 47 23 14 11 Error (%) 0.70 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 -1.70 0.00 3 2 2 1 1 0 0 0 0 0 0 n 16 N 70 207 103 207 103 207 103 51 25 15 12 Error (%) 0.03 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.00 0.16 3 2 2 1 1 0 0 0 0 0 0 n 17.2032 N 75 223 111 223 111 223 111 55 27 16 13 Error (%) 0.48 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.20 0.00
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Section 13 Serial Communication Interface (SCI)
Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode) (4)
Operating Frequency (MHz) Bit Rate (bps) n 110 150 300 600 1200 2400 4800 9600 19200 31250 38400 3 2 2 1 1 0 0 0 0 0 0 18 N 79 233 116 233 116 233 116 58 28 17 14 Error (%) -0.12 0.16 0.16 0.16 0.16 0.16 0.16 -0.69 1.02 0.00 -2.34 n 3 2 2 1 1 0 0 0 0 0 0 N 86 255 127 255 127 255 127 63 31 19 15 19.6608 Error (%) 0.31 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 -1.70 0.00 n 3 2 2 1 1 0 0 0 0 0 0 N 88 64 129 64 129 64 129 64 32 19 15 20 Error (%) -0.25 0.16 0.16 0.16 0.16 0.16 0.16 0.16 -1.36 0.00 1.73
Table 13.4 Maximum Bit Rate for Each Frequency (Asynchronous Mode)
(MHz) 2 2.4576 3 3.6864 4 4.9152 5 6 6.144 7.3728 8 Maximum Bit Rate (kbps) 62.5 76.8 93.75 115.2 125.0 153.6 156.25 187.5 192.0 230.4 250.0 n 0 0 0 0 0 0 0 0 0 0 0 0 N 0 0 0 0 0 0 0 0 0 0 0 0 (MHz) 9.8304 10 12 12.288 14 14.7456 16 17.2032 18 19.6608 20 Maximum Bit Rate (kbps) 307.2 312.5 375.0 384.0 437.5 460.8 500.0 537.6 562.5 614.4 625.0 n 0 0 0 0 0 0 0 0 0 0 0 N 0 0 0 0 0 0 0 0 0 0 0
2.097152 65.536
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Section 13 Serial Communication Interface (SCI)
Table 13.5 Maximum Bit Rate with External Clock Input (Asynchronous Mode)
(MHz) 2 2.4576 3 3.6864 4 4.9152 5 6 6.144 7.3728 8 External Input Clock (MHz) 0.5000 0.6144 0.7500 0.9216 1.0000 1.2288 1.2500 1.5000 1.5360 1.8432 2.0000 Maximum Bit Rate (kbps) 31.25 32.768 38.4 46.875 57.6 62.5 76.8 78.125 93.75 96.0 115.2 125.0 (MHz) 9.8304 10 12 12.288 14 14.7456 16 17.2032 18 19.6608 20 External Input Clock (MHz) 2.4576 2.5000 3.0000 3.0720 3.5000 3.6864 4.0000 4.3008 4.5000 4.9152 5.0000 Maximum Bit Rate (kbps) 153.6 156.25 187.5 192.0 218.75 230.4 250.0 268.8 281.25 307.2 312.5
2.097152 0.5243
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Section 13 Serial Communication Interface (SCI)
Table 13.6 BRR Settings for Various Bit Rates (Clocked Synchronous Mode)
Operating Frequency (MHz) Bit Rate (bps) 110 250 500 1k 2.5k 5k 10k 25k 50k 100k 250k 500k 1M 2.5M 5M Legend: Blank : Cannot be set. : Can be set, but there will be a degree of error. * : Continuous transfer is not possible. 2 n 3 2 1 1 0 0 0 0 0 0 0 0 N 70 124 249 124 199 99 49 19 9 4 1 0* n 2 2 1 1 0 0 0 0 0 0 0 0 4 N 249 124 249 99 199 99 39 19 9 3 1 0* 3 2 2 1 1 0 0 0 0 0 0 0 124 249 124 199 99 199 79 39 19 7 3 1 0 0* 1 1 0 0 0 0 0 0 249 124 249 99 49 24 9 4 3 3 2 2 1 1 0 0 0 0 0 0 249 124 249 99 199 99 159 79 39 15 7 3 2 1 1 0 0 0 0 0 0 0 0 124 249 124 199 99 49 19 9 4 1 0* n 8 N n 10 N n 16 N n 20 N
Table 13.7 Maximum Bit Rate with External Clock Input (Clocked Synchronous Mode)
External Input Maximum Bit Rate (bps) (MHz) Clock (MHz) 2 4 6 8 10 0.3333 0.6667 1.0000 1.3333 1.6667 0.333 0.667 1.000 1.333 1.667 (MHz) 12 14 16 20 External Input Maximum Bit Rate Clock (MHz) (bps) 2.0000 2.6667 3.0000 3.3333 2.000 2.667 3.000 3.333
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Section 13 Serial Communication Interface (SCI)
Table 13.8 Examples of Bit Rate for Various BRR Settings (Smart Card Interface Mode) (When n = 0 and S = 372)
Operating Frequency (MHz) Bit Rate (bps) 6720 9600 5.00 N 0 0 Error (%) 0.01 30.00 7.00 N 1 0 Error (%) 30 1.99 7.1424 N 1 0 Error (%) 28.75 0.00 10.00 N 1 1 Error (%) 0.01 30 10.7136 N 1 1 Error (%) 7.14 25
Operating Frequency (MHz) Bit Rate (bps) 6720 9600 13.00 N 2 1 Error (%) 13.33 8.99 14.2848 N 2 1 Error (%) 4.76 0.00 16.00 N 2 1 Error (%) 6.67 12.01 18.00 N 3 2 Error (%) 9.99 15.99 20.00 N 3 2 Error (%) 0.01 6.66
Table 13.9 Maximum Bit Rate at Various Frequencies (Smart Card Interface Mode) (When S = 372)
(MHz) 5.00 7.00 7.1424 10.00 10.7136 13.00 14.2848 16.00 18.00 20.00 Maximum Bit Rate (bps) 6720 9409 9600 13441 14400 17473 19200 21505 24194 26882 n 0 0 0 0 0 0 0 0 0 0 N 0 0 0 0 0 0 0 0 0 0
Rev. 4.00 Mar 21, 2006 page 331 of 654 REJ09B0071-0400
Section 13 Serial Communication Interface (SCI)
13.3.10
Serial Expansion Mode Register (SEMR_0)
SEMR_0 is an 8-bit register that expands SCI_0 functions; such as setting of the basic clock, selecting of the clock source, and automatic setting of the transfer rate.
Bit 7 Bit Name Initial Value 0 R/W R/W Description Reserved This is a readable/writable bit, but the write value should always be 0. 6 to 4 3 ABCS All 0 0 R/W Reserved The write value should always be 0. Asynchronous Basic Clock Select Selects the 1-bit-interval base clock in asynchronous mode. The ABCS setting is valid in asynchronous mode (C/A in SMR = 0). 0: Operates on a basic clock with a frequency of 16-times the transfer rate. 1: Operates on a basic clock with a frequency of 8-times the transfer rate.
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Section 13 Serial Communication Interface (SCI) Initial Value 0 0 0
Bit 2 1 0
Bit Name ACS2 ACS1 ACS0
R/W R/W R/W R/W
Description Asynchronous Clock Source Select When an average transfer rate is selected, the base clock is set automatically regardless of the ABCS value. Note that average transfer rates are not supported for operating frequencies other than 10.667 MHz and 16 MHz. The ACS0 to ACS0 settings are valid when the external clock input is selected (CKE1 in SCR = 1) in asynchronous mode (C/A in SMR = 0). 000: External clock input 001: Selects the average transfer rate 115.152 kbps only for = 10.667MHz (operates on a basic clock with a frequency of 16-times the transfer rate). 001: Selects the average transfer rate 460.606 kbps only for = 10.667MHz (operates on a basic clock with a frequency of 8-times the transfer rate). 011: Reserved 100: TPU clock input (logical ANDs TIOCA1 and TIOCA2) 101: 115.196 kbps average transfer rate (for = 6 MHz only) is selected (SCI0 operates on base clock with frequency of 16 times transfer rate) 110: 460.784 kbps average transfer rate (for = 6 MHz only) is selected (SCI0 operates on base clock with frequency of 16 times transfer rate) 111: 720 kbps average transfer rate (for = 6 MHz only) is selected (SCI0 operates on base clock with frequency of 8 times transfer rate)
Figure 13.3 and 13.4 shows an example of the internal base clock when the average transfer rate is selected.
Rev. 4.00 Mar 21, 2006 page 333 of 654 REJ09B0071-0400
Average transfer rate when = 10.667 MHz 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 1 2 34
1
2
3
Base clock
10.667 MHz/4 = 1.8424 MHz 45 6 7 8 9 10 11 12 13 14 15 16
2.667 MHz
2.667 MHz
2.667 MHz x (38/55) =
1
2
3
Rev. 4.00 Mar 21, 2006 page 334 of 654 REJ09B0071-0400
Average transfer rate = 1.8424 MHz/16 = 115.152 kbps Average error with 115.2kbps = - 0.043% 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 1 2 34 3.6848 MHz 45 6 7 8 Average transfer rate = 3.6848 MHz/8 = 460.606 kbps Average error with 460.6kbps = - 0.043%
Section 13 Serial Communication Interface (SCI)
1.8424 MHz (Average)
1 bit = Base clock x 16*
Average transfer rate when = 460.606 MHz
1
2
3
Base clock
10.667 MHz/2 =
5.333 MHz
5.333 MHz
5.333 MHz x (38/55) =
1
2
3
3.6848 MHz (Average)
1 bit = Base clock x 16*
Figure 13.3 Example of Internal Base Clock when Average Transfer Rate Is Selected (1)
Note: The 1-bit length changes according to the base clock synchronization.
Average transfer rate when f = 115.196 kbps
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 1
2
34
5
6
78
Base clock
16 MHz/8 = 2 MHz
2 MHz
2 MHz x (47/51) =
1.8431 MHz (Average)
1
2
3
4
1.8431 MHz 5 6 7 8 9 10 11 12 1 bit = Base clock x 16* 13 14 15 16
Average transfer rate = 1.8431 MHz/16 = 115.196 kbps
Average error with 115.2kbps = - 0.004%
Average transfer rate when = 460.784 kbps
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59
Base clock
8 MHz
16 MHz/2 = 8 MHz
8 MHz x (47/51) =
7.3725 MHz (Average) 1 bit = Base clock x 16*
1
2
3
4
7.3725 MHz 5678 9 10 11 12 13 14 15 16
Average transfer rate = 7.3725 MHz/16 = 460.784 kbps
Average error with 460.8kbps = - 0.004%
Average transfer rate when = 720 kbps
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Base clock
8 MHz
16 MHz/2 = 8 MHz
8 MHz x (18/5) =
5.76 MHz (Average)
1
2
3
5.76 MHz 45 6 7 8
1 bit = Base clock x 16*
Average transfer rate = 5.76 MHz/8 = 720 kbps
Average error with 720kbps = - 0%
Figure 13.4 Example of Internal Base Clock when Average Transfer Rate Is Selected (2)
Section 13 Serial Communication Interface (SCI)
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Note: The 1-bit length changes according to the base clock synchronization.
Section 13 Serial Communication Interface (SCI)
13.4
Operation in Asynchronous Mode
Figure 13.5 shows the general format for asynchronous serial communication. One frame consists of a start bit (low level), followed by data, a parity bit, and finally stop bits (high level). In asynchronous serial communication, the transmission line is usually held in the mark state (high level). The SCI monitors the transmission line, and when it goes to the space state (low level), recognizes a start bit and starts serial communication. Inside the SCI, the transmitter and receiver are independent units, enabling full-duplex communication. Both the transmitter and the receiver also have a double-buffered structure, so that data can be read or written during transmission or reception, enabling continuous data transfer. In asynchronous mode, the SCI performs synchronization at the falling edge of the start bit in reception. The SCI samples the data on the 8th pulse of a clock with a frequency of 16 times the length of one bit, so that the transfer data is latched at the center of each bit. The SCI_0 samples the data on the 4th pulse of a clock with a frequency of 8 times the length of one bit when the ABCS bit in SEMR_0 is 1.
Idle state (mark state) 1 0/1 Parity bit 1 bit, or none 1 1
1 Serial data 0 Start bit 1 bit
LSB D0 D1 D2 D3 D4 D5 D6
MSB D7
Stop bit
Transmit/receive data 7 or 8 bits
1 or 2 bits
One unit of transfer data (character or frame)
Figure 13.5 Data Format in Asynchronous Communication (Example with 8-Bit Data, Parity, Two Stop Bits) 13.4.1 Data Transfer Format
Table 13.10 shows the data transfer formats that can be used in asynchronous mode. Any of 12 transfer formats can be selected according to the SMR setting. For details on the multiprocessor bit, refer to section 13.5, Multiprocessor Communication Function.
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Section 13 Serial Communication Interface (SCI)
Table 13.10 Serial Transfer Formats (Asynchronous Mode)
SMR Settings CHR 0 0 0 0 1 1 1 1 0 0 1 1 PE 0 0 1 1 0 0 1 1 -- -- -- -- MP 0 0 0 0 0 0 0 0 1 1 1 1 STOP 0 1 0 1 0 1 0 1 0 1 0 1 1 S S S S S S S S S S S S Serial Transfer Format and Frame Length 2 3 4 5 6 7 8 9 10 STOP STOPSTOP P STOP P STOPSTOP STOP STOP STOP P STOP P STOPSTOP MPB STOP MPB STOPSTOP MPB STOP MPB STOPSTOP 11 12
8-bit data 8-bit data 8-bit data 8-bit data 7-bit data 7-bit data 7-bit data 7-bit data 8-bit data 8-bit data 7-bit data 7-bit data
Legend: S: Start bit STOP: Stop bit P: Parity bit MPB: Multiprocessor bit
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Section 13 Serial Communication Interface (SCI)
13.4.2
Receive Data Sampling Timing and Reception Margin in Asynchronous Mode
In asynchronous mode, the SCI operates on a basic clock with a frequency of 16 times the transfer rate. In reception, the SCI samples the falling edge of the start bit using the basic clock, and performs internal synchronization. Receive data is latched internally at the rising edge of the 8th pulse of the basic clock as shown in figure 13.6. Thus, the reception margin in asynchronous mode is given by formula (1) below.
M = | (0.5 - 1 ) - (L - 0.5) F - 2N
| D - 0.5 | (1 + F) | x 100 [%]
N
... Formula (1) Where M: N: D: L: F: Reception margin (%) Ratio of bit rate to clock (N = 16) Clock duty (D = 0 to 1.0) Frame length (L = 9 to 12) Absolute value of clock rate deviation
Assuming values of F (absolute value of clock rate deviation) = 0, D (clock duty) = 0.5, and N (ratio of bit rate to clock) = 16 in formula (1), the reception margin can be given by the formula. M = {0.5 - 1/(2 x 16)} x 100 [%] = 46.875% However, this is only the computed value, and a margin of 20% to 30% should be allowed for in system design.
16 clocks 8 clocks 0 Internal basic clock Receive data (RxD) Synchronization sampling timing Data sampling timing 7 15 0 7 15 0
Start bit
D0
D1
Figure 13.6 Receive Data Sampling Timing in Asynchronous Mode
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Section 13 Serial Communication Interface (SCI)
13.4.3
Clock
Either an internal clock generated by the on-chip baud rate generator or an external clock input at the SCK pin can be selected as the SCI's serial clock, according to the setting of the C/A bit in SMR and the CKE0 and CKE1 bits in SCR. When an external clock is input at the SCK pin, the clock frequency should be 16 times the bit rate used. When an external clock is selected, a base clock with an average transfer rate can be selected by setting bits ACS2 to ACS0 in SEMR_0. When the SCI is operated on an internal clock, the clock can be output from the SCK pin when setting CKE1 = 0 and CKE0 = 1. The frequency of the clock output in this case is equal to the bit rate, and the phase is such that the rising edge of the clock is in the middle of the transmit data, as shown in figure 13.7.
SCK TxD 0 D0 D1 D2 D3 D4 D5 D6 D7 0/1 1 1
1 frame
Figure 13.7 Relationship between Output Clock and Transfer Data Phase (Asynchronous Mode)
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Section 13 Serial Communication Interface (SCI)
13.4.4
SCI Initialization (Asynchronous Mode)
Before transmitting and receiving data, you should first clear the TE and RE bits in SCR to 0, then initialize the SCI as described below. When the operating mode, or transfer format, is changed for example, the TE and RE bits must be cleared to 0 before making the change using the following procedure. When the TE bit is cleared to 0, the TDRE flag is set to 1. Note that clearing the RE bit to 0 does not initialize the contents of the RDRF, PER, FER, and ORER flags, or the contents of RDR. When the external clock is used in asynchronous mode, the clock must be supplied even during initialization.
Start initialization
Clear TE and RE bits in SCR to 0
[1] Set the clock selection in SCR. Be sure to clear bits RIE, TIE, TEIE, and MPIE, and bits TE and RE, to 0. When the clock is selected in asynchronous mode, it is output immediately after SCR settings are made. [2] Set the data transfer format in SMR, SCMR and SEMR_0. [2] [3] Write a value corresponding to the bit rate to BRR. Not necessary if an external clock or an average transfer rate clock by bits AC2 to ACS0 in SEMR_0 is used. [4] Wait at least one bit interval, then set the TE bit or RE bit in SCR to 1. Also set the RIE, TIE, TEIE, and MPIE bits.
Set CKE1 and CKE0 bits in SCR (TE, RE bits 0)
[1]
Set data transfer format in SMR, SCMR, and SEMR_0 Set value in BRR Wait
[3]
No 1-bit interval elapsed? Yes Set TE and RE bits* in SCR to 1, and set RIE, TIE, TEIE, and MPIE bits
[4]

Note: * Perform this set operation with the RxD pin in the 1 state. If the RE bit is set to 1 with the RxD pin in the 0 state, it may be misinterpreted as a start bit.
Figure 13.8 Sample SCI Initialization Flowchart
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Section 13 Serial Communication Interface (SCI)
13.4.5
Serial Data Transmission (Asynchronous Mode)
Figure 13.9 shows an example of operation for transmission in asynchronous mode. In transmission, the SCI operates as described below. 1. The SCI monitors the TDRE flag in SSR. If the flag is cleared to 0, the SCI recognizes that data has been written to TDR, and transfers the data from TDR to TSR. 2. After transferring data from TDR to TSR, the SCI sets the TDRE flag to 1 and starts transmission. If the TIE bit is set to 1 at this time, a transmit data empty interrupt request (TXI) is generated. Continuous transmission is possible because the TXI interrupt routine writes next transmit data to TDR before transmission of the current transmit data has been completed. 3. Data is sent from the TxD pin in the following order: start bit, transmit data, parity bit or multiprocessor bit (may be omitted depending on the format), and stop bit. 4. The SCI checks the TDRE flag at the timing for sending the stop bit. 5. If the TDRE flag is 0, the data is transferred from TDR to TSR, the stop bit is sent, and then serial transmission of the next frame is started. 6. If the TDRE flag is 1, the TEND flag in SSR is set to 1, the stop bit is sent, and then the "mark state" is entered, in which 1 is output. If the TEIE bit in SCR is set to 1 at this time, a TEI interrupt request is generated.
Start bit 0 D0 D1 Data D7 Parity Stop Start bit bit bit 0/1 1 0 D0 D1 Data D7 Parity Stop bit bit 0/1 1
1
1 Idle state (mark state)
TDRE TEND TXI interrupt Data written to TDR and TXI interrupt request generated TDRE flag cleared to 0 in request generated TXI interrupt service routine
TEI interrupt request generated
1 frame
Figure 13.9 Example of Operation in Transmission in Asynchronous Mode (Example with 8-Bit Data, Parity, One Stop Bit)
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Section 13 Serial Communication Interface (SCI)
Figure 13.10 shows a sample flowchart for data transmission.
Initialization Start transmission
[1]
Read TDRE flag in SSR
[2]
[1] SCI initialization: The TxD pin is automatically designated as the transmit data output pin. After the TE bit is set to 1, a frame of 1s is output, and transmission is enabled. [2] SCI status check and transmit data write: Read SSR and check that the TDRE flag is set to 1, then write transmit data to TDR and clear the TDRE flag to 0. [3] Serial transmission continuation procedure: To continue serial transmission, read 1 from the TDRE flag to confirm that writing is possible, then write data to TDR, and then clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request, and data is written to TDR. (H8S/2268 Group only) [4] Break output at the end of serial transmission: To output a break in serial transmission, set DR for the port corresponding to the TxD pin to 0, clear DDR to 1, then clear the TE bit in SCR to 0. Note: * The case, in which the DTC automatically checks and clears the TDRE flag, occurs only when DISEL in DTC is 0 with the transfer counter not being 0. Therefore, the TDRE flag should be cleared by CPU when DISEL is 1, or when DISEL is 0 with the transfer counter being 0.
No TDRE = 1 Yes Write transmit data to TDR and clear TDRE flag in SSR to 0
No All data transmitted? Yes [3] Read TEND flag in SSR
No TEND = 1 Yes No Break output? Yes Clear DR to 0 and set DDR to 1
[4]
Clear TE bit in SCR to 0
Figure 13.10 Sample Serial Transmission Flowchart
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Section 13 Serial Communication Interface (SCI)
13.4.6
Serial Data Reception (Asynchronous Mode)
Figure 13.11 shows an example of operation for reception in asynchronous mode. In serial reception, the SCI operates as described below. 1. The SCI monitors the communication line. If a start bit is detected, the SCI performs internal synchronization, receives receive data in RSR, and checks the parity bit and stop bit. 2. If an overrun error occurs (when reception of the next data is completed while the RDRF flag is still set to 1), the ORER bit in SSR is set to 1. If the RIE bit in SCR is set to 1 at this time, an ERI interrupt request is generated. Receive data is not transferred to RDR. The RDRF flag remains to be set to 1. 3. If a parity error is detected, the PER bit in SSR is set to 1 and receive data is transferred to RDR. If the RIE bit in SCR is set to 1 at this time, an ERI interrupt request is generated. 4. If a framing error is detected (when the stop bit is 0), the FER bit in SSR is set to 1 and receive data is transferred to RDR. If the RIE bit in SCR is set to 1 at this time, an ERI interrupt request is generated. 5. If reception is completed successfully, the RDRF bit in SSR is set to 1, and receive data is transferred to RDR. If the RIE bit in SCR is set to 1 at this time, an RXI interrupt request is generated. Continuous reception is possible because the RXI interrupt routine reads the receive data transferred to RDR before reception of the next receive data has been completed.
Start bit 0 D0 D1 Data D7 Parity Stop Start bit bit bit 0/1 1 0 D0 D1 Data D7 Parity Stop bit bit 0/1 0
1
1 Idle state (mark state)
RDRF FER RXI interrupt request generated RDR data read and RDRF flag cleared to 0 in RXI interrupt service routine
ERI interrupt request generated by framing error
1 frame
Figure 13.11 Example of SCI Operation in Reception (Example with 8-Bit Data, Parity, One Stop Bit)
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Section 13 Serial Communication Interface (SCI)
Table 13.11 shows the states of the SSR status flags and receive data handling when a receive error is detected. If a receive error is detected, the RDRF flag retains its state before receiving data. Reception cannot be resumed while a receive error flag is set to 1. Accordingly, clear the ORER, FER, PER, and RDRF bits to 0 before resuming reception. Figure 13.12 shows a sample flow chart for serial data reception. Table 13.11 SSR Status Flags and Receive Data Handling
SSR Status Flag RDRF* 1 0 0 1 1 0 1 ORER 1 0 0 1 1 0 1 FER 0 1 0 1 0 1 1 PER 0 0 1 0 1 1 1 Receive Data Lost Transferred to RDR Transferred to RDR Lost Lost Transferred to RDR Lost Receive Error Type Overrun error Framing error Parity error Overrun error + framing error Overrun error + parity error Framing error + parity error Overrun error + framing error + parity error
Note: * The RDRF flag retains the state it had before data reception.
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Section 13 Serial Communication Interface (SCI)
Initialization Start reception
[1]
[1] SCI initialization: The RxD pin is automatically designated as the receive data input pin.
No
[2] [3] Receive error processing and break detection: [2] If a receive error occurs, read the ORER, PER, and FER flags in SSR to identify the error. After performing the appropriate error processing, ensure Yes that the ORER, PER, and FER flags are PERFERORER = 1 all cleared to 0. Reception cannot be [3] resumed if any of these flags are set to No Error processing 1. In the case of a framing error, a break can be detected by reading the (Continued on next page) value of the input port corresponding to the RxD pin. [4] Read RDRF flag in SSR [4] SCI status check and receive data read: Read SSR and check that RDRF = 1, then read the receive data in RDR and RDRF = 1 clear the RDRF flag to 0. Transition of the RDRF flag from 0 to 1 can also be identified by an RXI interrupt. Yes Read ORER, PER, and FER flags in SSR Read receive data in RDR, and clear RDRF flag in SSR to 0 [5] Serial reception continuation procedure: To continue serial reception, before the stop bit for the current frame is received, read the RDRF flag, read RDR, and clear the RDRF flag to 0. The RDRF flag is cleared automatically when DTC* is activated by an RXI interrupt and the RDR value is read. (H8S/2268 Group only) Note: * The case, in which the DTC automatically clears the RDRF flag, occurs only when DISEL in DTC is 0 with the transfer counter not being 0. Therefore, the RDRF flag should be cleared by CPU when DISEL is 1, or when DISEL is 0 with the transfer counter being 0.
No All data received? Yes Clear RE bit in SCR to 0 [5]
Figure 13.12 Sample Serial Reception Data Flowchart (1)
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Section 13 Serial Communication Interface (SCI)
[3] Error processing
No ORER = 1 Yes Overrun error processing
No FER = 1 Yes Yes Break? No Framing error processing Clear RE bit in SCR to 0
No PER = 1 Yes Parity error processing
Clear ORER, PER, and FER flags in SSR to 0

Figure 13.12 Sample Serial Reception Data Flowchart (2)
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Section 13 Serial Communication Interface (SCI)
13.5
Multiprocessor Communication Function
Use of the multiprocessor communication function enables data transfer between a number of processors sharing communication lines by asynchronous serial communication using the multiprocessor format, in which a multiprocessor bit is added to the transfer data. When multiprocessor communication is performed, each receiving station is addressed by a unique ID code. The serial communication cycle consists of two component cycles; an ID transmission cycle that specifies the receiving station, and a data transmission cycle. The multiprocessor bit is used to differentiate between the ID transmission cycle and the data transmission cycle. If the multiprocessor bit is 1, the cycle is an ID transmission cycle; if the multiprocessor bit is 0, the cycle is a data transmission cycle. Figure 13.13 shows an example of inter-processor communication using the multiprocessor format. The transmitting station first sends the ID code of the receiving station with which it wants to perform serial communication as data with a 1 multiprocessor bit added. It then sends transmit data as data with a 0 multiprocessor bit added. When data with a 1 multiprocessor bit is received, the receiving station compares that data with its own ID. The station whose ID matches then receives the data sent next. Stations whose IDs do not match continue to skip data until data with a 1 multiprocessor bit is again received. The SCI uses the MPIE bit in SCR to implement this function. When the MPIE bit is set to 1, transfer of receive data from RSR to RDR, error flag detection, and setting the SSR status flags, RDRF, FER, and ORER to 1, are inhibited until data with a 1 multiprocessor bit is received. On reception of a receive character with a 1 multiprocessor bit, the MPB bit in SSR is set to 1 and the MPIE bit is automatically cleared, thus normal reception is resumed. If the RIE bit in SCR is set to 1 at this time, an RXI interrupt is generated. When the multiprocessor format is selected, the parity bit setting is rendered invalid. All other bit settings are the same as those in normal asynchronous mode. The clock used for multiprocessor communication is the same as that in normal asynchronous mode.
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Section 13 Serial Communication Interface (SCI)
Transmitting station Serial transmission line Receiving station A (ID = 01) Serial data Receiving station B (ID = 02) H'01 (MPB = 1) Receiving station C (ID = 03) H'AA (MPB = 0) Receiving station D (ID = 04)
ID transmission cycle = Data transmission cycle = receiving station Data transmission to specification receiving station specified by ID Legend: MPB: Multiprocessor bit
Figure 13.13 Example of Communication Using Multiprocessor Format (Transmission of Data H'AA to Receiving Station A)
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Section 13 Serial Communication Interface (SCI)
13.5.1
Multiprocessor Serial Data Transmission
Figure 13.14 shows a sample flowchart for multiprocessor serial data transmission. For an ID transmission cycle, set the MPBT bit in SSR to 1 before transmission. For a data transmission cycle, clear the MPBT bit in SSR to 0 before transmission. All other SCI operations are the same as those in asynchronous mode.
Initialization Start transmission
[1]
Read TDRE flag in SSR No
[2]
[1] SCI initialization: The TxD pin is automatically designated as the transmit data output pin. After the TE bit is set to 1, a frame of 1s is output, and transmission is enabled. [2] SCI status check and transmit data write: Read SSR and check that the TDRE flag is set to 1, then write transmit data to TDR. Set the MPBT bit in SSR to 0 or 1. Finally, clear the TDRE flag to 0. [3] Serial transmission continuation procedure: To continue serial transmission, be sure to read 1 from the TDRE flag to confirm that writing is possible, then write data to TDR, and then clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request, and data is written to TDR. (H8S/2268 Group only) [4] Break output at the end of serial transmission: To output a break in serial transmission, set the port DR to 0, clear DDR to 1, then clear the TE bit in SCR to 0.
TDRE = 1 Yes Write transmit data to TDR and set MPBT bit in SSR
Clear TDRE flag to 0
All data transmitted? Yes Read TEND flag in SSR
No
[3]
TEND = 1 Yes Break output? Yes
No
No [4] Note: * The case, in which the DTC automatically clears the TDRE flag, occurs only when DISEL in DTC is 0 with the transfer counter not being 0. Therefore, the TDRE flag should be cleared by CPU when DISEL is 1, or when DISEL is 0 with the transfer counter being 0.
Clear DR to 0 and set DDR to 1
Clear TE bit in SCR to 0

Figure 13.14 Sample Multiprocessor Serial Transmission Flowchart
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Section 13 Serial Communication Interface (SCI)
13.5.2
Multiprocessor Serial Data Reception
Figure 13.16 shows a sample flowchart for multiprocessor serial data reception. If the MPIE bit in SCR is set to 1, data is skipped until data with a 1 multiprocessor bit is sent. On receiving data with a 1 multiprocessor bit, the receive data is transferred to RDR. An RXI interrupt request is generated at this time. All other SCI operations are the same as in asynchronous mode. Figure 13.15 shows an example of SCI operation for multiprocessor format reception.
Start bit 0 D0 D1 Data (ID1) MPB D7 1 Stop bit 1 Start bit 0 D0 Data (Data1) D1 D7 Stop MPB bit 0
1
1
1 Mark state (idle state)
MPIE
RDRF
RDR value MPIE = 0 RXI interrupt request (multiprocessor interrupt) generated RDR data read and RDRF flag cleared to 0 in RXI interrupt service routine
ID1 If not this station's ID, MPIE bit is set to 1 again RXI interrupt request is not generated, and RDR retains its state
(a) Data does not match station's ID
1
Start bit 0 D0 D1
Data (ID2) D7
Stop MPB bit 1 1
Start bit 0 D0
Data (Data2) D1 D7
Stop MPB bit 0
1
1 Mark state (idle state)
MPIE
RDRF
RDR value
ID1 MPIE = 0 RXI interrupt request (multiprocessor interrupt) generated RDR data read and RDRF flag cleared to 0 in RXI interrupt service routine
ID2 Matches this station's ID, so reception continues, and data is received in RXI interrupt service routine
Data2 MPIE bit set to 1 again
(b) Data matches station's ID
Figure 13.15 Example of SCI Operation in Reception (Example with 8-Bit Data, Multiprocessor Bit, One Stop Bit)
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Section 13 Serial Communication Interface (SCI)
Initialization Start reception
[1]
[1] SCI initialization: The RxD pin is automatically designated as the receive data input pin. [2] ID reception cycle: Set the MPIE bit in SCR to 1. [3] SCI status check, ID reception and comparison: Read SSR and check that the RDRF flag is set to 1, then read the receive data in RDR and compare it with this station's ID. If the data is not this station's ID, set the MPIE bit to 1 again, and clear the RDRF flag to 0. If the data is this station's ID, clear the RDRF flag to 0. [4] SCI status check and data reception: Read SSR and check that the RDRF flag is set to 1, then read the data in RDR. [5] Receive error processing and break detection: If a receive error occurs, read the ORER and FER flags in SSR to identify the error. After performing the appropriate error processing, ensure that the ORER and FER flags are all cleared to 0. Reception cannot be resumed if either of these flags is set to 1. In the case of a framing error, a break can be detected by reading the RxD pin value.
Read MPIE bit in SCR Read ORER and FER flags in SSR
[2]
Yes FERORER = 1 No Read RDRF flag in SSR No RDRF = 1 Yes Read receive data in RDR No This station's ID? Yes Read ORER and FER flags in SSR Yes FERORER = 1 No Read RDRF flag in SSR No RDRF = 1 Yes Read receive data in RDR No All data received? Yes Clear RE bit in SCR to 0 (Continued on next page) [4] [3]
[5] Error processing
Figure 13.16 Sample Multiprocessor Serial Reception Flowchart (1)
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Section 13 Serial Communication Interface (SCI)
[5]
Error processing
No ORER = 1 Yes Overrun error processing
No FER = 1 Yes Yes Break? No Framing error processing Clear RE bit in SCR to 0
Clear ORER, PER, and FER flags in SSR to 0

Figure 13.16 Sample Multiprocessor Serial Reception Flowchart (2)
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Section 13 Serial Communication Interface (SCI)
13.6
Operation in Clocked Synchronous Mode
Figure 13.17 shows the general format for clocked synchronous communication. In clocked synchronous mode, data is transmitted or received synchronous with clock pulses. In clocked synchronous serial communication, data on the transmission line is output from one falling edge of the serial clock to the next. In clocked synchronous mode, the SCI receives data in synchronous with the rising edge of the serial clock. After 8-bit data is output, the transmission line holds the MSB state. In clocked synchronous mode, no parity or multiprocessor bit is added. Inside the SCI, the transmitter and receiver are independent units, enabling full-duplex communication through the use of a common clock. Both the transmitter and the receiver also have a double-buffered structure, so data can be read or written during transmission or reception, enabling continuous data transfer.
One unit of transfer data (character or frame) * Synchronization clock LSB Serial data Don't care Note: * High except in continuous transfer Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 MSB Bit 7 Don't care *
Figure 13.17 Data Format in Synchronous Communication (For LSB-First) 13.6.1 Clock
Either an internal clock generated by the on-chip baud rate generator or an external synchronization clock input at the SCK pin can be selected, according to the setting of CKE0 and CKE1 bits in SCR. When the SCI is operated on an internal clock, the serial clock is output from the SCK pin. Eight serial clock pulses are output in the transfer of one character, and when no transfer is performed the clock is fixed high. 13.6.2 SCI Initialization (Clocked Synchronous Mode)
Before transmitting and receiving data, the TE and RE bits in SCR should be cleared to 0, then the SCI should be initialized as described in a sample flowchart in figure 13.18. When the operating mode, or transfer format, is changed for example, the TE and RE bits must be cleared to 0 before making the change using the following procedure. When the TE bit is cleared to 0, the TDRE flag is set to 1. Note that clearing the RE bit to 0 does not change the contents of the RDRF, PER, FER, and ORER flags, or the contents of RDR.
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Section 13 Serial Communication Interface (SCI)
Start initialization
[1] Set the clock selection in SCR. Be sure to clear bits RIE, TIE, TEIE, and MPIE, TE and RE, to 0. [2] Set the data transfer format in SMR and SCMR. [1] [3] Write a value corresponding to the bit rate to BRR. Not necessary if an external clock is used. [4] Wait at least one bit interval, then set the TE bit or RE bit in SCR to 1. Also set the RIE, TIE TEIE, and MPIE bits. Setting the TE and RE bits enables the TxD and RxD pins to be used.
Clear TE and RE bits in SCR to 0
Set CKE1 and CKE0 bits in SCR (TE, RE bits 0)
Set data transfer format in SMR and SCMR Set value in BRR Wait
[2]
[3]
No 1-bit interval elapsed? Yes
Set TE and RE bits in SCR to 1, and set RIE, TIE, TEIE, and MPIE bits
[4]

Note: In simultaneous transmit and receive operations, the TE and RE bits should both be cleared to 0 or set to 1 simultaneously.
Figure 13.18 Sample SCI Initialization Flowchart 13.6.3 Serial Data Transmission (Clocked Synchronous Mode)
Figure 13.19 shows an example of SCI operation for transmission in clocked synchronous mode. In serial transmission, the SCI operates as described below. 1. The SCI monitors the TDRE flag in SSR, and if the flag is 0, the SCI recognizes that data has been written to TDR, and transfers the data from TDR to TSR. 2. After transferring data from TDR to TSR, the SCI sets the TDRE flag to 1 and starts transmission. If the TIE bit in SCR is set to 1 at this time, a transmit data empty interrupt (TXI) is generated. Continuous transmission is possible because the TXI interrupt routine writes the next transmit data to TDR before transmission of the current transmit data has been completed.
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Section 13 Serial Communication Interface (SCI)
3. 8-bit data is sent from the TxD pin synchronized with the output clock when output clock mode has been specified, and synchronized with the input clock when use of an external clock has been specified. 4. The SCI checks the TDRE flag at the timing for sending the MSB (bit 7). 5. If the TDRE flag is cleared to 0, data is transferred from TDR to TSR, and serial transmission of the next frame is started. 6. If the TDRE flag is set to 1, the TEND flag in SSR is set to 1, and the TDRE flag maintains the output state of the last bit. If the TEIE bit in SCR is set to 1 at this time, a TEI interrupt request is generated. The SCK pin is fixed high. Figure 13.20 shows a sample flow chart for serial data transmission. Even if the TDRE flag is cleared to 0, transmission will not start while a receive error flag (ORER, FER, or PER) is set to 1. Make sure that the receive error flags are cleared to 0 before starting transmission. Note that clearing the RE bit to 0 does not clear the receive error flags.
Transfer direction Synchronization clock Serial data TDRE TEND TXI interrupt request generated Data written to TDR and TDRE flag cleared to 0 in TXI interrupt service routine 1 frame TXI interrupt request generated TEI interrupt request generated Bit 0 Bit 1 Bit 7 Bit 0 Bit 1 Bit 6 Bit 7
Figure 13.19 Sample SCI Transmission Operation in Clocked Synchronous Mode
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Section 13 Serial Communication Interface (SCI)
Initialization Start transmission
[1]
[1] SCI initialization: The TxD pin is automatically designated as the transmit data output pin. [2] SCI status check and transmit data write: Read SSR and check that the TDRE flag is set to 1, then write transmit data to TDR and clear the TDRE flag to 0. [3] Serial transmission continuation procedure: To continue serial transmission, be sure to read 1 from the TDRE flag to confirm that writing is possible, then write data to TDR, and then clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request and data is written to TDR. (H8S/2268 Group only)
Read TDRE flag in SSR
[2]
No TDRE = 1 Yes Write transmit data to TDR and clear TDRE flag in SSR to 0
No All data transmitted? Yes [3]
Read TEND flag in SSR Note: * The case, in which the DTC automatically clears the TDRE flag, occurs only when DISEL in DTC is 0 with the transfer counter not being 0. Therefore, the TDRE flag should be cleared by CPU when DISEL is 1, or when DISEL is 0 with the transfer counter being 0.
No TEND = 1 Yes Clear TE bit in SCR to 0
Figure 13.20 Sample Serial Transmission Flowchart
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Section 13 Serial Communication Interface (SCI)
13.6.4
Serial Data Reception (Clocked Synchronous Mode)
Figure 13.21 shows an example of SCI operation for reception in clocked synchronous mode. In serial reception, the SCI operates as described below. 1. The SCI performs internal initialization synchronous with a synchronous clock input or output, starts receiving data, and stores the received data in RSR. 2. If an overrun error occurs (when reception of the next data is completed while the RDRF flag in SSR is still set to 1), the ORER bit in SSR is set to 1. If the RIE bit in SCR is set to 1 at this time, an ERI interrupt request is generated, receive data is not transferred to RDR, and the RDRF flag remains to be set to 1. 3. If reception is completed successfully, the RDRF bit in SSR is set to 1, and receive data is transferred to RDR. If the RIE bit in SCR is set to 1 at this time, an RXI interrupt request is generated. Continuous reception is possible because the RXI interrupt routine reads the receive data transferred to RDR before reception of the next receive data has finished.
Synchronization clock Serial data RDRF ORER RXI interrupt request generated RDR data read and RDRF flag cleared to 0 in RXI interrupt 1 frame RXI interrupt request generated ERI interrupt request generated by overrun error Bit 7 Bit 0 Bit 7 Bit 0 Bit 1 Bit 6 Bit 7
Figure 13.21 Example of SCI Operation in Reception Reception cannot be resumed while a receive error flag is set to 1. Accordingly, clear the ORER, FER, PER, and RDRF bits to 0 before resuming reception. Figure 13.22 shows a sample flow chart for serial data reception. An overrun error occurs or synchronous clocks are output until the RE bit is cleared to 0 when an internal clock is selected and only receive operation is possible. When a transmission and reception will be carried out in a unit of one frame, be sure to carry out a dummy transmission with only one frame by the simultaneous transmit and receive operations at the same time.
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Section 13 Serial Communication Interface (SCI)
Initialization Start reception
[1]
[1] SCI initialization: The RxD pin is automatically designated as the receive data input pin. [2] [3] Receive error processing: If a receive error occurs, read the ORER flag in SSR, and after performing the appropriate error processing, clear the ORER flag to 0. Transfer cannot be resumed if the ORER flag is set to 1. [4] SCI status check and receive data read: Read SSR and check that the RDRF flag is set to 1, then read the receive data in RDR and clear the RDRF flag to 0. Transition of the RDRF flag from 0 to 1 can also be identified by an RXI interrupt. [5] Serial reception continuation procedure: To continue serial reception, before the final bit of the current frame is received, reading the RDRF flag, reading RDR, and clearing the RDRF flag to 0 should be finished. The RDRF flag is cleared automatically when the DTC* is activated by a receive data full interrupt (RXI) request and the RDR value is read. (H8S/2268 Group only)
Read ORER flag in SSR
[2]
Yes ORER = 1 No [3] Error processing (Continued below) Read RDRF flag in SSR [4]
No RDRF = 1 Yes Read receive data in RDR, and clear RDRF flag in SSR to 0
No All data received? Yes Clear RE bit in SCR to 0 [5]
[3]
Error processing
Overrun error processing
Note: * The case, in which the DTC automatically clears the RDRF flag, occurs only when DISEL in DTC is 0 with the transfer counter not being 0. Therefore, the RDRF flag should be cleared by CPU when DISEL is 1, or when DISEL is 0 with the transfer counter being 0.
Clear ORER flag in SSR to 0
Figure 13.22 Sample Serial Reception Flowchart
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Section 13 Serial Communication Interface (SCI)
13.6.5
Simultaneous Serial Data Transmission and Reception (Clocked Synchronous Mode)
Figure 13.23 shows a sample flowchart for simultaneous serial transmit and receive operations. The following procedure should be used for simultaneous serial data transmit and receive operations. To switch from transmit mode to simultaneous transmit and receive mode, after checking that the SCI has finished transmission and the TDRE and TEND flags are set to 1, clear TE to 0. Then simultaneously set TE and RE to 1 with a single instruction. To switch from receive mode to simultaneous transmit and receive mode, after checking that the SCI has finished reception, clear RE to 0. Then after checking that the RDRF and receive error flags (ORER, FER, and PER) are cleared to 0, simultaneously set TE and RE to 1 with a single instruction.
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Section 13 Serial Communication Interface (SCI)
Initialization Start transmission/reception
[1]
[1]
SCI initialization: The TxD pin is designated as the transmit data output pin, and the RxD pin is designated as the receive data input pin, enabling simultaneous transmit and receive operations. SCI status check and transmit data write: Read SSR and check that the TDRE flag is set to 1, then write transmit data to TDR and clear the TDRE flag to 0. Transition of the TDRE flag from 0 to 1 can also be identified by a TXI interrupt. Receive error processing: If a receive error occurs, read the ORER flag in SSR, and after performing the appropriate error processing, clear the ORER flag to 0. Transmission/reception cannot be resumed if the ORER flag is set to 1. SCI status check and receive data read: Read SSR and check that the RDRF flag is set to 1, then read the receive data in RDR and clear the RDRF flag to 0. Transition of the RDRF flag from 0 to 1 can also be identified by an RXI interrupt. Serial transmission/reception continuation procedure: To continue serial transmission/ reception, before the final bitof the current frame is received, finish reading the RDRF flag, reading RDR, and clearing the RDRF flag to 0. Also, before the final bit of the current frame is transmitted, read 1 from the TDRE flag to confirm that writing is possible. Then write data to TDR and clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request and data is written to TDR. Also, the RDRF flag is cleared automatically when the DTC* is activated by a receive data full interrupt (RXI) request and the RDR value is read. (H8S/2268
Read TDRE flag in SSR No TDRE = 1 Yes Write transmit data to TDR and clear TDRE flag in SSR to 0
[2]
[2]
[3]
Read ORER flag in SSR Yes [3] Error processing
[4]
ORER = 1 No
Read RDRF flag in SSR No RDRF = 1 Yes Read receive data in RDR, and clear RDRF flag in SSR to 0
[4]
[5]
No All data received? Yes [5]
Clear TE and RE bits in SCR to 0

Group only)
Notes: When switching from transmit or receive operation to simultaneous transmit and receive operations, first clear the TE bit and RE bit to 0, then set both these bits to 1 by one instruction simultaneously. * The case, in which the DTC automatically clears the TDRE flag or RDRF flag, occurs only when DISEL in the corresponding DTC transfer is 0 with the transfer counter not being 0. Therefore, the corresponding flag should be cleared by CPU when DISEL in the corresponding DTC transfer is 1, or when DISEL is 0 with the transfer counter being 0.
Figure 13.23 Sample Flowchart of Simultaneous Serial Transmit and Receive Operations
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Section 13 Serial Communication Interface (SCI)
13.7
Operation in Smart Card Interface
The SCI supports an IC card (Smart Card) interface that conforms to ISO/IEC 7816-3 (Identification Card) as a serial communication interface extension function. Switching between the normal serial communication interface and the Smart Card interface mode is carried out by means of a register setting. 13.7.1 Pin Connection Example
Figure 13.24 shows an example of connection with the Smart Card. In communication with an IC card, as both transmission and reception are carried out on a single data transmission line, the TxD pin and RxD pin should be connected to the LSI pin. The data transmission line should be pulled up to the VCC power supply with a resistor. If an IC card is not connected, and the TE and RE bits are both set to 1, closed transmission/reception is possible, enabling self-diagnosis to be carried out. When the clock generated on the Smart Card interface is used by an IC card, the SCK pin output is input to the CLK pin of the IC card. This LSI port output is used as the reset signal.
VCC TxD RxD SCK Px (port) This LSI Connected equipment Data line Clock line Reset line I/O CLK RST IC card
Figure 13.24 Schematic Diagram of Smart Card Interface Pin Connections 13.7.2 Data Format (Except for Block Transfer Mode)
Figure 13.25 shows the transfer data format in Smart Card interface mode. * One frame consists of 8-bit data plus a parity bit in asynchronous mode. * In transmission, a guard time of at least 2 etu (Elementary Time Unit: the time for transfer of one bit) is left between the end of the parity bit and the start of the next frame. * If a parity error is detected during reception, a low error signal level is output for one etu period, 10.5 etu after the start bit. * If an error signal is sampled during transmission, the same data is retransmitted automatically after a delay of 2 etu or longer.
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Section 13 Serial Communication Interface (SCI)
When there is no parity error Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp
Transmitting station output
When a parity error occurs Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp DE
Transmitting station output Receiving station output Start bit Data bits Parity bit Error signal
Legend: DS: D0 to D7: Dp: DE:
Figure 13.25 Normal Smart Card Interface Data Format Data transfer with other types of IC cards (direct convention and inverse convention) are performed as described in the following.
(Z) A Ds Z D0 Z D1 A D2 Z D3 Z D4 Z D5 A D6 A D7 Z Dp (Z) State
Figure 13.26 Direct Convention (SDIR = SINV = O/E = 0) E With the direction convention type IC and the above sample start character, the logic 1 level corresponds to state Z and the logic 0 level to state A, and transfer is performed in LSB-first order. The start character data above is H'3B. For the direct convention type, clear the SDIR and SINV bits in SCMR to 0. According to Smart Card regulations, clear the O/E bit in SMR to 0 to select even parity mode.
(Z) A Ds Z D7 Z D6 A D5 A D4 A D3 A D2 A D1 A D0 Z Dp (Z) State
Figure 13.27 Inverse Convention (SDIR = SINV = O/E = 1) E
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Section 13 Serial Communication Interface (SCI)
With the inverse convention type, the logic 1 level corresponds to state A and the logic 0 level to state Z, and transfer is performed in MSB-first order. The start character data for the above is H'3F. For the inverse convention type, set the SDIR and SINV bits in SCMR to 1. According to Smart Card regulations, even parity mode is the logic 0 level of the parity bit, and corresponds to state Z. In this LSI, the SINV bit inverts only data bits D0 to D7. Therefore, set the O/E bit in SMR to 1 to invert the parity bit for both transmission and reception. 13.7.3 Block Transfer Mode
Operation in block transfer mode is the same as that in the normal Smart Card interface mode, except for the following points. * In reception, though the parity check is performed, no error signal is output even if an error is detected. However, the PER bit in SSR is set to 1 and must be cleared before receiving the parity bit of the next frame. * In transmission, a guard time of at least 1 etu is left between the end of the parity bit and the start of the next frame. * In transmission, because retransmission is not performed, the TEND flag is set to 1, 11.5 etu after transmission start. * As with the normal Smart Card interface, the ERS flag indicates the error signal status, but since error signal transfer is not performed, this flag is always cleared to 0.
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Section 13 Serial Communication Interface (SCI)
13.7.4
Receive Data Sampling Timing and Reception Margin
In Smart Card interface mode an internal clock generated by the on-chip baud rate generator can only be used as a transmission/reception clock. In this mode, the SCI operates on a basic clock with a frequency of 32, 64, 372, or 256 times the transfer rate (fixed to 16 times in normal asynchronous mode) as determined by bits BCP1 and BCP0. In reception, the SCI samples the falling edge of the start bit using the basic clock, and performs internal synchronization. As shown in figure 13.28, by sampling receive data at the rising-edge of the 16th, 32nd, 186th, or 128th pulse of the basic clock, data can be latched at the middle of the bit. The reception margin is given by the following formula.
M = | (0.5 - | D - 0.5 | 1 ) - (L - 0.5) F - (1 + F) | x 100% N 2N
Where M: Reception margin (%) N: Ratio of bit rate to clock (N = 32, 64, 372, and 256) D: Clock duty (D = 0 to 1.0) L: Frame length (L = 10) F: Absolute value of clock frequency deviation Assuming values of F = 0, D = 0.5 and N = 372 in the above formula, the reception margin formula is as follows. M = (0.5 - 1/2 x 372) x 100% = 49.866%
372 clocks 186 clocks 0 Internal basic clock 185 371 0 185 371 0
Receive data (RxD) Synchronization sampling timing
Start bit
D0
D1
Data sampling timing
Figure 13.28 Receive Data Sampling Timing in Smart Card Mode (Using Clock of 372 Times the Transfer Rate)
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Section 13 Serial Communication Interface (SCI)
13.7.5
Initialization
Before transmitting and receiving data, initialize the SCI as described below. Initialization is also necessary when switching from transmit mode to receive mode, or vice versa. 1. Clear the TE and RE bits in SCR to 0. 2. Clear the error flags ERS, PER, and ORER in SSR to 0. 3. Set the GM, BLK, O/E, BCP0, BCP1, CKS0, CKS1 bits in SMR. Set the PE bit to 1. 4. Set the SMIF, SDIR, and SINV bits in SCMR. When the SMIF bit is set to 1, the TxD and RxD pins are both switched from ports to SCI pins, and are placed in the high-impedance state. 5. Set the value corresponding to the bit rate in BRR. 6. Set the CKE0 and CKE1 bits in SCR. Clear the TIE, RIE, TE, RE, MPIE, and TEIE bits to 0. If the CKE0 bit is set to 1, the clock is output from the SCK pin. 7. Wait at least one bit interval, then set the TIE, RIE, TE, and RE bits in SCR. Do not set the TE bit and RE bit at the same time, except for self-diagnosis. To switch from receive mode to transmit mode, after checking that the SCI has finished reception, initialize the SCI, and set RE to 0 and TE to 1. Whether SCI has finished reception or not can be checked with the RDRF, PER, or ORER flags. To switch from transmit mode to receive mode, after checking that the SCI has finished transmission, initialize the SCI, and set TE to 0 and RE to 1. Whether SCI has finished transmission or not can be checked with the TEND flag. 13.7.6 Serial Data Transmission (Except for Block Transfer Mode)
As data transmission in Smart Card interface mode involves error signal sampling and retransmission processing, the operations are different from those in normal serial communication interface mode (except for block transfer mode). Figure 13.29 illustrates the retransfer operation when the SCI is in transmit mode. 1. If an error signal is sent back from the receiving end after transmission of one frame is complete, the ERS bit in SSR is set to 1. If the RIE bit in SCR is enabled at this time, an ERI interrupt request is generated. The ERS bit in SSR should be cleared to 0 by the time the next parity bit is sampled. 2. The TEND bit in SSR is not set for a frame in which an error signal indicating an abnormality is received. Data is retransferred from TDR to TSR, and retransmitted automatically. 3. If an error signal is not sent back from the receiving end, the ERS bit in SSR is not set. Transmission of one frame, including a retransfer, is judged to have been completed, and the
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Section 13 Serial Communication Interface (SCI)
TEND bit in SSR is set to 1. If the TIE bit in SCR is enabled at this time, a TXI interrupt request is generated. Writing transmit data to TDR transfers the next transmit data. Figure 13.31 shows a flowchart for transmission. In the H8S/2268 Group, a sequence of transmit operations can be performed automatically by specifying the DTC to be activated with a TXI interrupt source. In a transmit operation, the TDRE flag is set to 1 at the same time as the TEND flag in SSR is set, and a TXI interrupt will be generated if the TIE bit in SCR has been set to 1. If the TXI request is designated beforehand as a DTC activation source, the DTC will be activated by the TXI request, and transfer of the transmit data will be carried out. At this moment, when the DISEL bit in DTC is 0 and the transfer counter is other than 0, the TDRE and TEND flags are automatically cleared to 0 when data is transferred by the DTC. When the DISEL bit in the corresponding DTC is 1, or both DISEL bit and the transfer counter are 0, flags are not cleared although transfer data is written to TDR by DTC. Consequently give the CPU an instruction of flag clear processing. In addition, in the event of an error, the SCI retransmits the same data automatically. During this period, the TEND flag remains cleared to 0 and the DTC is not activated. Therefore, the SCI and DTC will automatically transmit the specified number of bytes in the event of an error, including retransmission. However, the ERS flag is not cleared automatically when an error occurs, and so the RIE bit should be set to 1 beforehand so that an ERI request will be generated in the event of an error, and the ERS flag will be cleared. When performing transfer using the DTC, it is essential to set and enable the DTC before carrying out SCI setting. For details of the DTC setting procedures, refer to section 8, Data Transfer Controller (DTC).
Transfer frame n+1 (DE) Ds D0 D1 D2 D3 D4
nth transfer frame Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp DE TDRE Transfer to TSR from TDR TEND
Retransferred frame Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp
Transfer to TSR from TDR
Transfer to TSR from TDR
FER/ERS
Figure 13.29 Retransfer Operation in SCI Transmit Mode
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Section 13 Serial Communication Interface (SCI)
The timing for setting the TEND flag depends on the value of the GM bit in SMR. The TEND flag set timing is shown in figure 13.30.
I/O data TXI (TEND interrupt) When GM = 0
Ds
D0
D1
D2
D3
D4
D5
D6
D7
Dp
DE Guard time
12.5etu
11.0etu When GM = 1
Legend: Ds: D0 to D7: Dp: DE:
Start bit Data bits Parity bit Error signal
Figure 13.30 TEND Flag Generation Timing in Transmission Operation
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Section 13 Serial Communication Interface (SCI)
Start
Initialization Start transmission
ERS = 0? Yes
No
Error processing No TEND = 1? Yes Write data to TDR, and clear TDRE flag in SSR to 0
No All data transmitted ? Yes No ERS = 0? Yes Error processing No TEND = 1? Yes Clear TE bit to 0
End
Figure 13.31 Example of Transmission Processing Flow
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Section 13 Serial Communication Interface (SCI)
13.7.7
Serial Data Reception (Except for Block Transfer Mode)
Data reception in Smart Card interface mode uses the same operation procedure as for normal serial communication interface mode. Figure 13.32 illustrates the retransfer operation when the SCI is in receive mode. 1. If an error is found when the received parity bit is checked, the PER bit in SSR is automatically set to 1. If the RIE bit in SCR is set at this time, an ERI interrupt request is generated. The PER bit in SSR should be kept cleared to 0 until the next parity bit is sampled. 2. The RDRF bit in SSR is not set for a frame in which an error has occurred. 3. If no error is found when the received parity bit is checked, the PER bit in SSR is not set to 1, the receive operation is judged to have been completed normally, and the RDRF flag in SSR is automatically set to 1. If the RIE bit in SCR is enabled at this time, an RXI interrupt request is generated. Figure 13.33 shows a flowchart for reception. In the H8S/2268 Group, a sequence of receive operations can be performed automatically by specifying the DTC to be activated using an RXI interrupt source. In a receive operation, an RXI interrupt request is generated when the RDRF flag in SSR is set to 1. If the RXI request is designated beforehand as a DTC activation source, the DTC will be activated by the RXI request, and the receive data will be transferred. The RDRF flag is cleared to 0 automatically when the DISEL bit in DTC is 0 and the transfer counter is other than 0. When the DISEL bit in DTC is 1, or both the DISEL bit and the transfer counter are 0, flag is not cleared although the receive data is transferred by DTC. Consequently, give the CPU an instruction of flag clear processing. If an error occurs in receive mode and the ORER or PER flag is set to 1, a transfer error interrupt (ERI) request will be generated. Hence, so the error flag must be cleared to 0. In the event of an error, the DTC is not activated and receive data is skipped. Therefore, receive data is transferred for only the specified number of bytes in the event of an error. Even when a parity error occurs in receive mode and the PER flag is set to 1, the data that has been received is transferred to RDR and can be read from there. Note: For details on receive operations in block transfer mode, refer to section 13.4, Operation in Asynchronous Mode.
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Section 13 Serial Communication Interface (SCI)
Transfer frame n+1 (DE) Ds D0 D1 D2 D3 D4
nth transfer frame Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp DE RDRF
Retransferred frame Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp
PER
Figure 13.32 Retransfer Operation in SCI Receive Mode
Start
Initialization
Start reception
ORER = 0 and PER = 0 Yes
No
Error processing No
RDRF = 1? Yes
Read RDR and clear RDRF flag in SSR to 0
No
All data received? Yes Clear RE bit to 0
Figure 13.33 Example of Reception Processing Flow 13.7.8 Clock Output Control
When the GM bit in SMR is set to 1, the clock output level can be fixed with bits CKE0 and CKE1 in SCR. At this time, the minimum clock pulse width can be made the specified width. Figure 13.34 shows the timing for fixing the clock output level. In this example, GM is set to 1, CKE1 is cleared to 0, and the CKE0 bit is controlled.
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Section 13 Serial Communication Interface (SCI)
CKE0
SCK
Specified pulse width
Specified pulse width
Figure 13.34 Timing for Fixing Clock Output Level When turning on the power or switching between Smart Card interface mode and software standby mode, the following procedures should be followed in order to maintain the clock duty. Powering on: To secure clock duty from power-on, the following switching procedure should be followed. 1. The initial state is port input and high impedance. Use a pull-up resistor or pull-down resistor to fix the potential. 2. Fix the SCK pin to the specified output level with the CKE1 bit in SCR. 3. Set SMR and SCMR, and switch to smart card mode operation. 4. Set the CKE0 bit in SCR to 1 to start clock output. When changing from smart card interface mode to software standby mode: 1. Set the data register (DR) and data direction register (DDR) corresponding to the SCK pin to the value for the fixed output state in software standby mode. 2. Write 0 to the TE bit and RE bit in the serial control register (SCR) to halt transmit/receive operation. At the same time, set the CKE1 bit to the value for the fixed output state in software standby mode. 3. Write 0 to the CKE0 bit in SCR to halt the clock. 4. Wait for one serial clock period. During this interval, clock output is fixed at the specified level, with the duty preserved. 5. Make the transition to the software standby state.
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When returning to smart card interface mode from software standby mode: 1. Exit the software standby state. 2. Write 1 to the CKE0 bit in SCR and output the clock. Signal generation is started with the normal duty.
Software standby
Normal operation
Normal operation
Figure 13.35 Clock Halt and Restart Procedure
13.8
13.8.1
Interrupt Sources
Interrupts in Normal Serial Communication Interface Mode
Table 13.12 shows the interrupt sources in normal serial communication interface mode. A different interrupt vector is assigned to each interrupt source, and individual interrupt sources can be enabled or disabled using the enable bits in SCR. When the TDRE flag in SSR is set to 1, a TXI interrupt request is generated. When the TEND flag in SSR is set to 1, a TEI interrupt request is generated. A TXI interrupt can activate the DTC to perform data transfer. The TDRE flag is cleared to 0 automatically when data is transferred by the DTC. (H8S/2268 Group only) When the RDRF flag in SSR is set to 1, an RXI interrupt request is generated. When the ORER, PER, or FER flag in SSR is set to 1, an ERI interrupt request is generated. An RXI interrupt request can activate the DTC to transfer data. The RDRF flag is cleared to 0 automatically when data is transferred by the DTC*. (H8S/2268 Group only) A TEI interrupt is requested when the TEND flag is set to 1 and the TEIE bit is set to 1. If a TEI interrupt and a TXI interrupt are requested simultaneously, the TXI interrupt has priority for acceptance. However, if the TDRE and TEND flags are cleared simultaneously by the TXI interrupt routine, the SCI cannot branch to the TEI interrupt routine later. Note: * Flags are cleared only when the DISEL bit in DTC is 0 with the transfer counter other than 0.
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Section 13 Serial Communication Interface (SCI)
Table 13.12 Interrupt Sources of Serial Communication Interface Mode
Channel 0 Name ERI0 RXI0 TXI0 TEI0 1 ERI1 RXI1 TXI1 TEI1 2 ERI2 RXI2 TXI2 TEI2 Interrupt Source Receive Error Receive Data Full Transmit Data Empty Transmission End Receive Error Receive Data Full Transmit Data Empty Transmission End Receive Error Receive Data Full Transmit Data Empty Transmission End Interrupt Flag ORER, FER, PER RDRF TDRE TEND ORER, FER, PER RDRF TDRE TEND ORER, FER, PER RDRF TDRE TEND DTC Activation* Not possible Possible Possible Not possible Not possible Possible Possible Not possible Not possible Possible Possible Not possible Low
2 1 Priority*
High
Notes: 1. Indicates the initial state immediately after a reset. Priorities in channels can be changed by the interrupt controller. (H8S/2268 Group only) 2. Supported only by the H8S/2268 Group.
13.8.2
Interrupts in Smart Card Interface Mode
Table 13.13 shows the interrupt sources in Smart Card interface mode. The transmit end interrupt (TEI) request cannot be used in this mode. Note: In case of block transfer mode, see 13.8.1, Interrupts in Nomal Serial Communication Interface Mode.
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Section 13 Serial Communication Interface (SCI)
Table 13.13 Interrupt Sources in Smart Card Interface Mode
Channel 0 Name ERI0 RXI0 TXI0 1 ERI1 RXI1 TXI1 2 ERI2 RXI2 TXI2 Interrupt Source Receive Error, detection Receive Data Full Transmit Data Empty Receive Error, detection Receive Data Full Transmit Data Empty Receive Error, detection Receive Data Full Transmit Data Empty Interrupt Flag ORER, PER, ERS RDRF TEND ORER, PER, ERS RDRF TEND ORER, PER, ERS RDRF TEND DTC 2 Activation* Not possible Possible Possible Not possible Possible Possible Not possible Possible Possible Low
1 Priority*
High
Notes: 1. Indicates the initial state immediately after a reset. Priorities in channels can be changed by the interrupt controller. (H8S/2268 Group only) 2. Supported only by the H8S/2268 Group.
13.9
13.9.1
Usage Notes
Module Stop Mode Setting
SCI operation can be disabled or enabled using the module stop control register. The initial setting is for SCI operation to be halted. Register access is enabled by clearing module stop mode. For details, refer to section 22, Power-Down Modes. 13.9.2 Break Detection and Processing (Asynchronous Mode Only)
When framing error (FER) detection is performed, a break can be detected by reading the RxD pin value directly. In a break, the input from the RxD pin becomes all 0s, setting the FER flag, and possibly the PER flag. Note that as the SCI continues the receive operation after receiving a break, even if the FER flag is cleared to 0, it will be set to 1 again. 13.9.3 Mark State and Break Detection (Asynchronous Mode Only)
When TE is 0, the TxD pin is used as an I/O port whose direction (input or output) and level are determined by DDR. This can be used to set the TxD pin to mark state (high level) or send a break during serial data transmission. To maintain the communication line at mark state until TE is set to 1, set both DDR and DR to 1. As TE is cleared to 0 at this point, the TxD pin becomes an I/O port,
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Section 13 Serial Communication Interface (SCI)
and 1 is output from the TxD pin. To send a break during serial transmission, first set PDR to 1 and DR to 0, and then clear TE to 0. When TE is cleared to 0, the transmitter is initialized regardless of the current transmission state, the TxD pin becomes an I/O port, and 0 is output from the TxD pin. 13.9.4 Receive Error Flags and Transmit Operations (Clocked Synchronous Mode Only)
Transmission cannot be started when a receive error flag (ORER, PER, or FER) is set to 1, even if the TDRE flag is cleared to 0. Be sure to clear the receive error flags to 0 before starting transmission. Note also that receive error flags cannot be cleared to 0 even if the RE bit is cleared to 0. 13.9.5 Restrictions on Use of DTC (H8S/2268 Group Only)
* When an external clock source is used as the serial clock, the transmit clock should not be input until at least 5 clock cycles after TDR is updated by the DTC. Misoperation may occur if the transmit clock is input within 4 clocks after TDR is updated. (Figure 13.36) * When RDR is read by the DTC, be sure to set the activation source to the relevant SCI reception data full interrupt (RXI). * The flags are automatically cleared to 0 by DTC during the data transfer only when the DISEL bit in DTC is 0 with the transfer counter other than 0. When the DISEL bit in the corresponding DTC is 1, or both the DISEL bit and the transfer counter are 0, give the CPU an Instruction to clear flags. Note that, particularly during transmission, the TDRE flag that is not cleared by the CPU causes incorrect transmission.
SCK
t
TDRE LSB Serial data D0 D1 D2 D3 D4 D5 D6 D7
Note: When operating on an external clock, set t > 4 clocks.
Figure 13.36 Example of Clocked Synchronous Transmission by DTC
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Section 13 Serial Communication Interface (SCI)
13.9.6
Operation in Case of Mode Transition
* Transmission Operation should be stopped (by clearing TE, TIE, and TEIE to 0) before making a module stop mode, software standby mode, watch mode, subactive mode, or subsleep mode transition. TSR, TDR, and SSR are reset. The output pin states in module stop mode, software standby mode, watch mode, subactive mode, or subsleep mode depend on the port settings, and becomes high-level output after the relevant mode is cleared. If a transition is made during transmission, the data being transmitted will be undefined. When transmitting without changing the transmit mode after the relevant mode is cleared, transmission can be started by setting TE to 1 again, and performing the following sequence: SSR read -> TDR write -> TDRE clearance. To transmit with a different transmit mode after clearing the relevant mode, the procedure must be started again from initialization. Figure 13.37 shows a sample flowchart for mode transition during transmission. Port pin states are shown in figures 13.38 and 13.39. Operation should also be stopped (by clearing TE, TIE, and TEIE to 0) before making a transition from transmission by DTC transfer to module stop mode, software standby mode, watch mode, subactive mode, or subsleep mode transition. To perform transmission with the DTC after the relevant mode is cleared, setting TE and TIE to 1 will set the TXI flag and start DTC transmission. (H8S/2268 Group only) * Reception Receive operation should be stopped (by clearing RE to 0) before making a module stop mode, software standby mode, watch mode, subactive mode, or subsleep mode transition. RSR, RDR, and SSR are reset. If a transition is made without stopping operation, the data being received will be invalid. To continue receiving without changing the reception mode after the relevant mode is cleared, set RE to 1 before starting reception. To receive with a different receive mode, the procedure must be started again from initialization. Figure 13.40 shows a sample flowchart for mode transition during reception.
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Section 13 Serial Communication Interface (SCI)

All data transmitted? Yes Read TEND flag in SSR
No
[1]
[1]
TEND = 1 Yes TE = 0 [2]
No
Data being transmitted is interrupted. After exiting software standby mode, etc., normal CPU transmission is possible by setting TE to 1, reading SSR, writing TDR, and clearing TDRE to 0, but note that if the DTC has been activated, the remaining data in DTCRAM will be transmitted when TE and TIE are set to 1. (H8S/2268 Group only) If TIE and TEIE are set to 1, clear them to 0 in the same way. Includes module stop mode, watch mode, subactive mode, and subsleep mode.
[2]
Transition to software standby mode, etc. Exit from software standby mode, etc. Change operating mode? Yes Initialization
[3]
[3]
No
TE = 1

Figure 13.37 Sample Flowchart for Mode Transition during Transmission
Transition to software standby Exit from software standby
Start of transmission
End of transmission
TE bit
SCK output pin
Port input/output
TxD output pin
Port input/output Port
High output
Start SCI TxD output
Stop
Port input/output Port
High output SCI TxD output
Figure 13.38 Asynchronous Transmission Using Internal Clock
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Section 13 Serial Communication Interface (SCI)
Transition to software standby Exit from software standby
Start of transmission
End of transmission
TE bit
SCK output pin
Port input/output
TxD output pin Port input/output Port
Marking output SCI TxD output
Last TxD bit held
Port input/output Port
High output* SCI TxD output
Note: * Initialized by software standby.
Figure 13.39 Synchronous Transmission Using Internal Clock
Read RDRF flag in SSR No [1] [1] Receive data being received becomes invalid.
RDRF = 1 Yes Read receive data in RDR
RE = 0
Transition to software standby mode, etc. Exit from software standby mode, etc. Change operating mode? Yes Initialization
[2]
[2] Includes module stop mode, watch mode, subactive mode, and subsleep mode.
No
RE = 1

Figure 13.40 Sample Flowchart for Mode Transition during Reception
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Section 13 Serial Communication Interface (SCI)
13.9.7
Switching from SCK Pin Function to Port Pin Function:
* Problem in Operation: When switching the SCK pin function to the output port function (highlevel output) by making the following settings while DDR = 1, DR = 1, C/A = 1, CKE1 = 0, CKE0 = 0, and TE = 1 (synchronous mode), low-level output occurs for one half-cycle. 1. End of serial data transmission 2. TE bit = 0 3. C/A bit = 0 ... switchover to port output 4. Occurrence of low-level output (see figure 13.41)
Half-cycle low-level output SCK/port 1. End of transmission Data TE C/A CKE1 CKE0 Bit 6 Bit 7 2. TE = 0 4. Low-level output
3. C/A = 0
Figure 13.41 Operation when Switching from SCK Pin Function to Port Pin Function
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Section 13 Serial Communication Interface (SCI)
* Sample Procedure for Avoiding Low-Level Output: As this sample procedure temporarily places the SCK pin in the input state, the SCK/port pin should be pulled up beforehand with an external circuit. With DDR = 1, DR = 1, C/A = 1, CKE1 = 0, CKE0 = 0, and TE = 1, make the following settings in the order shown. 1. End of serial data transmission 2. TE bit = 0 3. CKE1 bit = 1 4. C/A bit = 0 ... switchover to port output 5. CKE1 bit = 0
High-level output SCK/port 1. End of transmission Data TE C/A 3. CKE1 = 1 CKE1 CKE0 5. CKE1 = 0 Bit 6 Bit 7 2. TE = 0
4. C/A = 0
Figure 13.42 Operation when Switching from SCK Pin Function to Port Pin Function (Example of Preventing Low-Level Output) 13.9.8 Assignment and Selection of Registers
Some serial communication interface registers are assigned to the same address as other registers. Register selection is performed by means of the IICE bit in the serial control register (SCRX). For details on register addresses, see section 24, List of Registers.
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
Section 14 I2C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
An I2C bus interface is available as an option in H8S/2264 Group. Observe the following note when using this option. * For mask-ROM versions, a W is added to the part number in products in which this optional function is used. Examples: HD6432264WTF The H8S/2268 Group has an internal I2C bus interface of two channels, while the H8S/2264 Group has that of one channel. The I2C bus interface conforms to and provides a subset of the Philips I2C bus (inter-IC bus) interface functions. The register configuration that controls the I2C bus differs partly from the Philips configuration, however. The I2C bus interface data transfer is performed using a data line (SDA) and a clock line (SCL) for each channel, which allows efficient use of connectors and the area of the PCB.
14.1
Features
* Selection of I2C bus format or clocked synchronous serial format I2C bus format: addressing format with acknowledge bit, for master/slave operation Clocked synchronous serial format: non-addressing format without acknowledge bit, for master operation only I2C bus format * Two ways of setting slave address * Start and stop conditions generated automatically in master mode * Selection of acknowledge output levels when receiving * Automatic loading of acknowledge bit when transmitting * Wait function in master mode A wait can be inserted by driving the SCL pin low after data transfer, excluding acknowledgement. The wait can be cleared by clearing the interrupt flag. * Wait function in slave mode A wait request can be generated by driving the SCL pin low after data transfer, excluding acknowledgement. The wait request is cleared when the next transfer becomes possible.
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IICIC05B_000020020700
Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
* Interrupt sources Data transfer end (including transmission mode transition with I2C bus format and address reception after loss of master arbitration) Address match: when any slave address matches or the general call address is received in slave receive mode Start condition detection (in master mode) Stop condition detection (in slave mode) * Selection of 16 internal clocks (in master mode) * Direct bus drive Two pins, P35/SCL0 and P34/SDA0, function as NMOS open-drain outputs when the bus drive function is selected. Two pins - P33/SCL1 and P32/SDA1--function as NMOS-only outputs when the bus drive function is selected. (H8S/2268 Group only) Figure 14.1 shows a block diagram of the I2C bus interface. Figure 14.2 shows an example of I/O pin connections to external circuits. Channel I/O pins are NMOS open drains, and it is possible to apply voltages in excess of the power supply (Vcc) voltage for this LSI. Set the upper limit of voltage applied to the power supply (Vcc) power supply range +0.3 V, i.e. 5.8 V. Channel 1 (H8S/2268 Group only) I/O pins are driven solely by NMOS, so in terms of appearance they carry out the same operations as an NMOS open drain. However, the voltage which can be applied to the I/O pins depends on the voltage of the power supply (Vcc) of this LSI.
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
PS ICCR Clock control Noise canceler Bus state decision circuit Arbitration decision circuit ICMR
SCL
ICSR
ICDRT
SDA
Output data control circuit
ICDRS
ICDRR Noise canceler Address comparator
SAR, SARX
Legend: ICCR: I2C bus control register ICMR: I2C bus mode register ICSR: I2C bus status register ICDR: I2C bus data register SAR: Slave address register SARX: Second slave address register Prescaler PS:
Interrupt generator
Interrupt request
Figure 14.1 Block Diagram of I2C Bus Interface
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Internal data bus
Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
VDD
VCC
SCL SCL in SCL out SDA
SCL
SDA
SDA in SDA out (Master) This LSI
SCL SDA
SCL in SCL out
SCL in SCL out
SDA in SDA out (Slave 1)
SDA in SDA out (Slave 2)
Figure 14.2 I2C Bus Interface Connections (Example: This LSI as Master)
14.2
Input/Output Pins
Table 14.1 shows the pin configuration for the I2C bus interface. Table 14.1 Pin Configuration
Name Serial clock Serial data
2 Serial clock* 2 Serial data*
Abbreviation* SCL0 SDA0 SCL1 SDA1
1
I/O I/O I/O I/O I/O
Function IIC_0 serial clock input/output IIC_0 serial data input/output IIC_1 serial clock input/output IIC_1 serial data input/output
Notes: 1. In the text, the channel subscript is omitted, and only SCL and SDA are used. 2. Supported only by the H8S/2268 Group.
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SCL SDA
Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
14.3
Register Descriptions
The I2C bus interface has the following registers. Registers ICDR and SARX and registers ICMR and SAR are allocated to the same addresses. Accessible addresses differ depending on the ICE bit in ICCR. SAR and SARX are accessed when ICE is 0, and ICMR and ICDR are accessed when ICE is 1. For details on the module stop control register, refer to section 22.1.2, Module Stop Control Registers A to D (MSTPCRA to MSTPCRD). * I2C bus data register_0 (ICDR_0)*2 * Slave address register_0 (SAR_0)*2 * Second slave address register_0 (SARX_0)*2 * I2C bus mode register_0 (ICMR_0)*2 * I2C bus control register_0 (ICCR_0)*2 * I2C bus status register_0 (ICSR_0)*2 * I2C bus data register_1 (ICDR_1)*1 *2 * Slave address register_1 (SAR_1)*1 *2 * Second slave address register_1 (SARX_1)*1 *2 * I2C bus mode register_1 (ICMR_1)*1 *2 * I2C bus control register_1 (ICCR_1)*1 *2 * I2C bus status register_1 (ICSR_1)*1 *2 * DDC switch register (DDCSWR) * Serial control register X (SCRX) Notes: 1. Supported only by the H8S/2268 Group. 2. Some of the registers in the I2C bus interface are allocated to the same addresses of other registers. The IICE bit in serial control register X (SCRX) selects each register.
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
14.3.1
I2C Bus Data Register (ICDR)
ICDR is an 8-bit readable/writable register that is used as a transmit data register when transmitting and a receive data register when receiving. ICDR is divided internally into a shift register (ICDRS), receive buffer (ICDRR), and transmit buffer (ICDRT). Data transfers among the three registers are performed automatically in coordination with changes in the bus state, and affect the status of internal flags such as TDRE and RDRF. When TDRE is 1 and the transmit buffer is empty, TDRE shows that the next transmit data can be written from the CPU. When RDRF is 1, it shows that the valid receive data is stored in the receive buffer. If I2C is in transmit mode and the next data is in ICDRT (the TDRE flag is 0) following transmission/reception of one frame of data using ICDRS, data is transferred automatically from ICDRT to ICDRS. If I2C is in receive mode and no previous data remains in ICDRR (the RDRF flag is 0) following transmission/reception of one frame of data using ICDRS, data is transferred automatically from ICDRS to ICDRR. If the number of bits in a frame, excluding the acknowledge bit, is less than 8, transmit data and receive data are stored differently. Transmit data should be written justified toward the MSB side when MLS = 0, and toward the LSB side when MLS = 1. Receive data bits read from the LSB side should be treated as valid when MLS = 0, and bits read from the MSB side when MLS = 1. ICDR can be written and read only when the ICE bit is set to 1 in ICCR. The value of ICDR is undefined after a reset. The TDRE and RDRF flags are set and cleared under the conditions shown below. Setting the TDRE and RDRF flags affects the status of the interrupt flags.
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group) Initial Value
2
Bit
Bit Name TDRE
R/W
Description Transmit Data Register Empty [Setting conditions] * In transmit mode, when a start condition is detected in the bus line state after a start condition is issued in 2 master mode with the I C bus format or serial format selected When data is transferred from ICDRT to ICDRS When a switch is made from receive mode to transmit mode after detection of a start condition When transmit data is written in ICDR in transmit mode When a stop condition is detected in the bus line state 2 after a stop condition is issued with the I C bus format or serial format selected When a stop condition is detected with the I C bus format selected In receive mode
2
* *
[Clearing conditions] * *
* * RDRF
Receive Data Register Full [Setting condition] When data is transferred from ICDRS to ICDRR [Clearing condition] When ICDR (ICDRR) receive data is read in receive mode
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
14.3.2
Slave Address Register (SAR)
SAR selects the slave address and selects the transfer format. SAR can be written and read only when the ICE bit is cleared to 0 in ICCR.
Bit 7 6 5 4 3 2 1 0 Bit Name SVA6 SVA5 SVA4 SVA3 SVA2 SVA1 SVA0 FS Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Selects the transfer format together with the FSX bit in SARX. Refer to table 14.2. Description Slave Address 6 to 0 Sets a slave address
14.3.3
Second Slave Address Register (SARX)
SARX stores the second slave address and selects the transfer format. SARX can be written and read only when the ICE bit is cleared to 0 in ICCR.
Bit 7 6 5 4 3 2 1 0 Bit Name SVAX6 SVAX5 SVAX4 SVAX3 SVAX2 SVAX1 SVAX0 FSX Initial Value 0 0 0 0 0 0 0 1 R/W R/W R/W R/W R/W R/W R/W R/W R/W Selects the transfer format together with the FS bit in SAR. Refer to table 14.2. Description Slave Address 6 to 0 Sets the second slave address
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
Table 14.2 Transfer Format
SAR FS 0 0 1 1 SARX FSX 0 1 0 1 I C Transfer Format SAR and SARX are used as the slave addresses with 2 the I C bus format. Only SAR is used as the slave address with the I C bus format. Only SARX is used as the slave address with the I C bus format. Clock synchronous serial format (SAR and SARX are invalid)
2 2 2
14.3.4
I2C Bus Mode Register (ICMR)
ICMR sets the transfer format and transfer rate. It can only be accessed when the ICE bit in ICCR is 1.
Bit 7 Bit Name MLS Initial Value 0 R/W R/W Description MSB-First/LSB-First Select 0: MSB-first 1: LSB-first Set this bit to 0 when the I C bus format is used. 6 WAIT 0 R/W Wait Insertion Bit This bit is valid only in master mode with the I C bus format. When WAIT is set to 1, after the fall of the clock for the final data bit, the IRIC flag is set to 1 in ICCR, and a wait state begins (with SCL at the low level). When the IRIC flag is cleared to 0 in ICCR, the wait ends and the acknowledge bit is transferred. If WAIT is cleared to 0, data and acknowledge bits are transferred consecutively with no wait inserted. The IRIC flag in ICCR is set to 1 on completion of the acknowledge bit transfer, regardless of the WAIT setting.
2 2
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group) Initial Value 0 0 0 0 0 0
2
Bit 5 4 3 2 1 0
Bit Name CKS2 CKS1 CKS0 BC2 BC1 BC0
R/W R/W R/W R/W R/W R/W R/W
Description Serial Clock Select 2 to 0 This bit is valid only in master mode. These bits select the required transfer rate, together with the IICX 1 and IICX0 bit in SCRX. Refer table 14.3. Bit Counter 2 to 0 These bits specify the number of bits to be transferred 2 next. With the I C bus format, the data is transferred with one addition acknowledge bit. Bit BC2 to BC0 settings should be made during an interval between transfer frames. If bits BC2 to BC0 are set to a value other than 000, the setting should be made while the SCL line is low. The value returns to 000 at the end of a data transfer, including the acknowledge bit. I C Bus Format 000: 9 bit 001: 2 bit 010: 3 bit 011: 4 bit 100: 5 bit 101: 6 bit 110: 7 bit 111: 8 bit
2
Clocked Synchronous Mode 000: 8 bit 001: 1 bit 010: 2 bit 011: 3 bit 100: 4 bit 101: 5 bit 110: 6 bit 111: 7 bit
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
Table 14.3 I2C Transfer Rate
SCRX IICX 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 ICMR Bit 4 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 Bit 3 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
2
Bit 5 or 6 Bit 5 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
Transfer Rate /28 /40 /48 /64 /80 /100 /112 /128 /56 /80 /96 /128 /160 /200 /224 /256 179 MHz 286 kHz 125 kHz 104 kHz 200 kHz 167 kHz 357 kHz 250 kHz 208 kHz 156 kHz 125 kHz 100 kHz 89.3 kHz 78.1 kHz 179 kHz 125 kHz 104 kHz 78.1 kHz 62.5 kHz 50.0 kHz 44.6 kHz 39.1 kHz 571 kHz* 400 kHz 333 kHz 250 kHz 200 kHz 160 kHz 143 kHz 125 kHz 286 kHz 200 kHz 167 kHz 125 kHz 100 kHz 80.0 kHz 71.4 kHz 62.5 kHz 714 kHz* 500 kHz* 417 kHz* 313 kHz 250 kHz 200 kHz 179 kHz 156 kHz 357 kHz 250 kHz 208 kHz 156 kHz 125 kHz 100 kHz 89.3 kHz 78.1 kHz
CKS2 CKS1 CKS0 Clock = 5 MHz = 8 MHz = 10 MHz = 16 MHz = 20 MHz
78.1 kHz 125 kHz 62.5 kHz 100 kHz 50.0 kHz 80.0 kHz 44.6 kHz 71.4 kHz 39.1 kHz 62.5 kHz 89.3 kHz 143 kHz 62.5 kHz 100 kHz 52.1 kHz 83.3 kHz 39.1 kHz 62.5 kHz 31.3 kHz 50.0 kHz 25.0 kHz 40.0 kHz 22.3 kHz 35.7 kHz 19.5 kHz 31.3 kHz
Note: * Out of the range of the I C bus interface specification (normal mode: 100 kHz in max. and high-speed mode: 400 kHz in max)
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
14.3.5
Serial Control Register X (SCRX)
SCRX controls the IIC operating modes.
Bit 7 6 5 Bit Name IICX1* IICX0 Initial Value 0 0 0 R/W R/W R/W R/W Description Reserved The initial value should not be changed. I C Transfer Rate Select 1 and 0 Selects the transfer rate in master mode, together with bits CKS2 to CKS0 in ICMR. Refer to table 14.3. IICX1 controls IIC_1 and IICX0 controls IIC_0. Note: * In the H8S/2264 Group, this bit is reserved. The initial value should not be changed. 4 IICE 0 R/W I C Master Enable Controls CPU access to the IIC data register and control registers (ICCR, ICSR, ICDR/SARX, and ICMR/SAR). 0: CPU access to the IIC data register and control registers is disabled. 1: CPU access to the IIC data register and control registers is enabled. 3 2 to 0 FLSHE 0 All 0 R/W R/W For details on this bit, refer to section 20.5.7, Serial Control Register X (SCRX). Reserved The initial value should not be changed.
2 2
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
14.3.6
I2C Bus Control Register (ICCR)
I2C bus control register (ICCR) consists of the control bits and interrupt request flags of I2C bus interface.
Bit 7 Bit Name ICE Initial Value 0 R/W R/W Description I C Bus Interface Enable When this bit is set to 1, the I C bus interface module is enabled to send/receive data and drive the bus since it is connected to the SCL and SDA pins. ICMR and ICDR can be accessed. When this bit is cleared, the module is halted and separated from the SCL and SDA pins. SAR and SARX can be accessed. 6 5 4 IEIC MST TRS 0 0 0 R/W R/W I C Bus Interface Interrupt Enable When this bit is 1, interrupts are enabled by IRIC. Master/Slave Select Transmit/Receive Select 00: Slave receive mode 01: Slave transmit mode 10: Master receive mode 11: Master transmit mode Both these bits will be cleared by hardware when they 2 lose in a bus contention in master mode of the I C bus format. In slave receive mode, the R/W bit in the first frame immediately after the start automatically sets these bits in receive mode or transmit mode by using hardware. The settings can be made again for the bits that were set/cleared by hardware, by reading these bits. When the TRS bit is intended to change during a transfer, the bit will not be switched until the frame transfer is completed, including acknowledgement.
2 2 2
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group) Initial Value 0
2
Bit 3
Bit Name ACKE
R/W R/W
Description Acknowledge Bit Judgement Selection 0: The value of the acknowledge bit is ignored, and continuous transfer is performed. The value of the received acknowledge bit is not indicated by the ACKB bit, which is always 0. 1: If the acknowledge bit is 1, continuous transfer is interrupted. In the H8S/2268 Group, the DTC* can be used to perform continuous transfer. The DTC* is activated when the IRTR interrupt flag is set to 1 (IRTR us one of two interrupt flags, the other being IRIC). When the ACKE bit is 0, the TDRE, IRIC, and IRTR flags are set on completion of data transmission, regardless of the acknowledge bit. When the ACKE bit is 1, the TDRE, IRIC, and IRTR flags are set on completion of data transmission when the acknowledge bit is 0, and the IRIC flag alone is set on completion of data transmission when the acknowledge bit is 1. When the DTC* is activated, the TDRE, IRIC, and IRTR flags are cleared to 0 after the specified number of data transfers have been executed. Consequently, interrupts are not generated during continuos data transfer, but if data transmission is completed with a 1 acknowledge bit when the ACKE bit is set to 1, the DTC* is not activated and an interrupt is generated, if enabled. Depending on the receiving device, the acknowledge bit may be significant, in indicating completion of processing of the received data, for instance, or may be fixed at 1 and have no significance. Note: * Supported only by the H8S/2268 Group.
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group) Initial Value 0
2
Bit 2
Bit Name BBSY
R/W R/W
Description Bus Busy In slave mode, reading the BBSY flag enables to confirm 2 whether the I C bus is occupied or released. The BBSY flag is set to 0 when the SDA level changes from high to low under the condition of SCl = high, assuming that the start condition has been issued. The BBSY flag is cleared to 0 when the SDA level changes from low to high under the condition of SCl = high, assuming that the start condition has been issued. Writing to the BBSY flag in slave mode is disabled. In master mode, the BBSY flag is used to issue start and stop conditions. Write 1 to BBSY and 0 to SCP to issue a start condition. Follow this procedure when also retransmitting a start condition. To issue a start/stop 2 condition, use the MOV instruction. The I C bus interface must be set in master transmit mode before the issue of a start condition.
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group) Initial Value 0
2
Bit 1
Bit Name IRIC
R/W R/W
Description
I2C Bus Interface Interrupt Request Flag Also see table 14.4. [Setting conditions] In I2C bus format master mode * When a start condition is detected in the bus line state after a start condition is issued (when the TDRE flag is set to 1 because of first frame transmission) * When a wait is inserted between the data and acknowledge bit when WAIT = 1 * At the end of data transfer (when the TDRE or RDRF flag is set to 1) * When a slave address is received after bus arbitration is lost (when the AL flag is set to1) * When 1 is received as the acknowledge bit when the ACKE bit is 1 (when the ACKB bit is set to 1) In I2C bus format slave mode * When the slave address (SVA, SVAX) matches (when the AAS and AASX flags are set to 1) and at the end of data transfer up to the subsequent retransmission start condition or stop condition detection (when the TDRE or RDRF flag is set to 1) * When the general call address (one frame including a R/W bit is H'00) is detected (when the ADZ flag is set to 1) and at the end of data transfer up to the subsequent retransmission start condition or stop condition detection (when the TDRE or RDRF flag is set to 1) * When 1 is received as the acknowledge bit when the ACKE bit is 1 (when the ACKB bit is set to 1) * When a stop condition is detected (when the STOP or ESTP flag is set to 1) With clocked synchronous serial format * At the end of data transfer (when the TDRE or RDRF flag is set to 1) * When a start condition is detected with serial format selected When a condition occurs in which internal flag of TDRE and RDFR is set to 1 except for the above [Clearing condition] When 0 is written in IRIC after reading IRIC = 1 When ICDR is read/written by DTC (H8S/2268 Group only) (When TDRE or RDRF flag is cleared to 0) (As it might not be a condition to clear, for details, see section 14.4.8.
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group) Initial Value 1
2
Bit 0
Bit Name SCP
R/W W
Description Start Condition/Stop Condition Prohibit bit The SCP bit controls the issue of start/stop conditions in master mode. To issue a start condition, write 1 in BBSY and 0 in SCP. A retransmit start condition is issued in the same way. To issue a stop condition, write 0 in BBSY and 0 in SCP. This bit is always read as 1. Data is not stored even if it is written.
When, with the I2C bus format selected, IRIC is set to 1 and an interrupt is generated, other flags must be checked in order to identify the source that set IRIC to 1. Although each source has a corresponding flag, caution is needed at the end of a transfer. When the TDRE or RDRF internal flag is set, the readable IRTR flag may or may not be set. In the H8S/2268 Group, even when data transfer is complete, the DTC activation request flag, IRTR, is not set until a retransmission start condition or stop condition is detected after a slave address (SVA) or general call address matched in the I2C bus format slave mode. Even when the IRIC flag and IRTR flag are set, the TDRE or RDRF internal flag may not be set. For a continuous transfer using the DTC in the H8S/2268 Group, the IRIC or IRTR flag is not cleared at the completion of the specified number of times of transfers. On the other hand, the TDRE and RDRF flags are cleared because the specified number of times of read/write operations have been complete. Table 14.4 shows the relationship between the flags and the transfer states.
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Table 14.4 Flags and Transfer States
MST TRS BBSY ESTP STOP IRTR AASX AL AAS ADZ ACKB State
1/0 1 1 1 1 0 0 0 0 0 0 0 0
1/0 1 1 1/0 1/0 0 0 0 0 1/0 1/0 1 1/0
0 0 1 1 1 1 1 1 1 1 1 1 0
0 0 0 0 0 0 0 0 0 0 0 0 1/0
0 0 0 0 0 0 0 0 0 0 0 0 1/0
0 0 1 0 1 0 0 0 0 0 1 0 0
0 0 0 0 0 1/0 0 0 1 0 1 1 0
0 0 0 0 0 1 0 0 0 0 0 0 0
0 0 0 0 0 1/0 1 1 0 0 0 0 0
0 0 0 0 0
0 0 0 0/1 0/1
Idle state (flag clearing required) Start condition issuance Start condition established Master mode wait Master mode transmit/receive end Arbitration lost SAR match by first frame in slave mode General call address match SARX match Slave mode transmit/receive end(except after SARX match) Slave mode transmit/receive end(after SARX match) Stop condition detected
1/0 0 0 1 0 0 0 0 0 0 0 0 0/1 0 1 0/1
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14.3.7
I2C Bus Status Register (ICSR)
ICSR consists of status flags.
Bit 7 Bit Name ESTP Initial Value 0 R/W Description This bit is valid in I C bus format slave mode. [Setting condition] When a stop condition is detected during frame transfer. [Clearing conditions] * 6 STOP 0 When 0 is written in ESTP after reading the state of 1 * When the IRIC flag is cleared to 0 * Normal Stop Condition Detection Flag R/(W) This bit is valid in I C bus format slave mode. [Setting condition] When a stop condition is detected during frame transfer. [Clearing conditions] * * 5 IRTR 0
2 2 2
R/(W)* Error Stop Condition Detection Flag
When 0 is written in STOP after reading STOP = 1 When the IRIC flag is cleared to 0
R/(W)* I C Bus Interface Continuous Transmission/Reception Interrupt Request Flag [Setting conditions] In I C bus interface slave mode * When the TDRE or RDRF flag is set to 1 when AASX =1
2 2
In I C bus interface other modes * * * When the TDRE or RDRF flag is set to 1 When 0 is written in IRTR after reading IRTR = 1 When the IRIC flag is cleared to 0 while ICE is 1 [Clearing conditions]
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group) Initial Value 0
2
Bit 4
Bit Name AASX
R/W
Description [Setting condition] When the second slave address is detected in slave receive mode and FSX = 0 [Clearing conditions] * * * When 0 is written in AASX after reading AASX = 1 When a start condition is detected In master mode
R/(W)* Second Slave Address Recognition Flag
3
AL
0
R/(W)* Arbitration Lost Flag Indicates that bus arbitration was lost in master mode. [Setting condition] * * * * When the internal SDA and SDA pin do not match at the rise of SCL. When the internal SCL is high at the fall of SCL. When 0 is written in AL after reading AL = 1 When ICDR data is written (transmit mode) or read (receive mode)
[Clearing conditions]
2
AAS
0
R/(W)* Slave Address Recognition Flag [Setting condition] When the slave address or general call address (one frame including a R/W bit is H'00) is detected in slave receive mode and FS = 0. [Clearing conditions] * * * When ICDR data is written (transmit mode) or read (receive mode) When 0 is written in AAS after reading AAS = 1 In master mode
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group) Initial Value 0
2
Bit 1
Bit Name ADZ
R/W
Description In I C bus format slave receive mode, this flag is set to 1 if the first frame following a start condition is the general call address (H'00). [Setting condition] When the general call address (one frame including a R/W bit is H'00) is detected in slave receive mode and FSX = 0 or FS = 0. [Clearing conditions] * * * When ICDR data is written (transmit mode) or read (receive mode) When 0 is written in ADZ after reading ADZ = 1 In master mode
2
R/(W)* General Call Address Recognition Flag
If a general call address is detected while FS = 1 and FSX = 0, the ADZ flag is set to 1; however, the general call address is not recognized (AAS flag is not set to 1).
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group) Initial Value 0
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Bit 0
Bit Name ACKB
R/W R/W
Description Acknowledge Bit Stores acknowledge data. Transmit mode: [Setting condition] When 1 is received as the acknowledge bit when ACKE = 1 in trasmit mode. [Clearing conditions] * * When 0 is received as the acknowledge bit when ACKE = 1 in transmit mode When 0 is written to the ACKE bit
Receive mode: 0: Returns 0 as acknowledge data after data reception 1: Retruns 1 as acknowledge data after data reception When this bit is read, the value loaded from the bus line (returned by the receiving device) is read in transmission (when TRS = 1). In reception (when TRS = 0), the value set by internal software is read. When this bit is written, acknowledge data that is returned after receiving is written regardless of the TRS value. If bit in ICSR is written using bit-manipulation instructions, the acknowledge data should be re-set since the acknowledge data setting is rewritten by the ACKB bit reading value. Write the ACKE bit to 0 to clear the ACKB flag to 0, bofore transmission is ended and a stop condition is issued in master mode, or before transmission is ended and SDA is released to issue a stop condition by a master device. Note: * Only a 0 can be written to this bit, to clear the flag.
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14.3.8
DDC Switch Register (DDCSWR)
DDCSWR controls the I2C bus interface format automatic switching function and internal latch clear.
Bit 7 to 4 3 2 1 0 Bit Name CLR3 CLR2 CLR1 CLR0 Initial Value All 0 1 1 1 1 R/W Description The write value should always be 0. W W W W I C Bus Interface Clear 3 to 0: When bits CLR3 to CLR0 are set, a clear signal is 2 generated for the I C bus interface internal latch circuit, and the internal state is initialized. The write data for 2 these bits is not retained. To perform I C clearance, bits CLR3 to CLR0 must be written to simultaneously using an MOV instruction. Do not use a bit manipulation instruction such as BCLR. 00XX: Setting prohibited 0100: Setting prohibited 0101: IIC_0 Internal latch cleared 2 0110: IIC_1* Internal Iatch cleared 0111: IIC_0, IIC_1* Internal Iatch cleared
2 2
1 R/(W)* Reserved
1XXX: Invalid setting Legend: X: Don't care Notes: 1. Only 0 can be written to these bits. 2. Supported only by the H8S/2268 Group.
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14.4
Operation
The I2C bus interface has clocked synchronous serial and I2C bus formats. 14.4.1 I2C Bus Data Format
The I2C bus formats are addressing formats and an acknowledge bit is inserted. The first frame following a start condition always consists of 8 bits. The I2C bus format is shown in figure 14.3. The clocked synchronous serial format is a non-addressing format with no acknowledge bit. This is shown in figure 14.4. Figure 14.5 shows the I2C bus timing.
(a) I2C bus format (FS = 0 or FSX = 0) S 1 SLA 7 1 R/W 1 A 1 DATA n A 1 m A/A 1 P 1 n: transfer bit count (n = 1 to 8) m: transfer frame count (m 1)
(b) I2C bus format (start condition retransmission, FS = 0 or FSX = 0) S 1 SLA 7 1 R/W 1 A 1 DATA n1 m1 A/A 1 S 1 SLA 7 1 R/W 1 A 1 DATA n2 m2 A/A 1 P 1
n1 and n2: transfer bit count (n1 and n2 = 1 to 8) m1 and m2: transfer frame count (m1 and m2 1)
Figure 14.3 I2C Bus Data Formats (I2C Bus Formats)
FS = 1 and FSX = 1 S 1 DATA 8 1 DATA n m P 1 n: transfer bit count (n = 1 to 8) m: transfer frame count (m 1)
Figure 14.4 I2C Bus Data Format (Clocked Synchronous Serial Format)
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
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SDA
SCL S
1-7 SLA
8 R/W
9 A
1-7 DATA
8
9 A
1-7 DATA
8
9 A/A P
Legend: S: Start condition. The master device drives SDA from high to low while SCL is high SLA: Slave address R/W: Indicates the direction of data transfer: from the slave device to the master device when R/W is 1, or from the master device to the slave device when R/W is 0 A: Acknowledge. The receiving device drives SDA low to acknowledge a transfer. DATA: Transferred data P: Stop condition. The master device drives SDA from low to high while SCL is high
Figure 14.5 I2C Bus Timing
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14.4.2
Initial Setting
At startup the following procedure is used to initialize the IIC.
Start initialization Set MSTPB4 = 0 (IIC0) MSTPB3 = 0 (IIC1) (MSTPCRB) Set IICE = 1 (SCRX) Set ICE = 0 (ICCR) Set SAR and SARX Set ICE = 1 (ICCR) Set ICSR Set SCRX Set ICMR Set ICCR Transmit/receive start Clear module stop.
Enable CPU access by IIC control register and data register. Enable SAR and SARX access. Set transfer format for 1st slave address, 2nd slave address, and IIC (SVA8 to SVA0, FS, SVAX6 to SVAX0, FSX). Enable IMCR and IMDR access. Use SCL and SDA pins is IIC port. Set acknowledge bit (ACKB). Set transfer rate (IICX). Set transfer format, wait insertion, and transfer rate (MLS, WAIT, CKS2 to CKS0). Set interrupt enable, transfer mode, and acknowledge judgment (IEIC, MST, TRS, ACKE).
Note: Setting only valid for H8S/2268 Group. For the H8S/2264 Group, only write 1 to this bit.
Figure 14.6 Flowchart for IIC Initialization (Example) Note: The ICMR register should be written to only after transmit or receive operations have completed. Writing to the ICMR register while a transmit or receive operation is in progress could cause an erroneous value to be written to bit counter bits BC2 to BC0. This could result in improper operation. 14.4.3 Master Transmit Operation
In I2C bus format master transmit mode, the master device outputs the transmit clock and transmit data, and the slave device returns an acknowledge signal. Figure 14.7 is a flowchart showing an example of the master transmit mode.
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
Start Initial settings [1] Initial settings.
2
Read BBSY flag in ICCR [2] Determine status of SCL and SDA lines. No BBSY = 0? Yes Set MST = 1 and TRS = 1 (ICCR) Write BBSY = 1 and SCP = 0 (ICCR)
[3] Set to master transmit mode.
[4] Generate start condition.
Read IRIC flag in ICCR [5] Wait for start condition to be met. No IRIC = 1? Yes Write transmit data to ICDR Clear IRIC flag in ICCR
[6] Set 1st byte (slave address + R/W) transmit data. (Perform ICDR write and IRIC flag clear operations continuously.)
Read IRIC flag in ICCR [7] Wait for end of 1 byte transmission. No IRIC = 1? Yes Read ACKB bit in ICSR ACKB = 0? Yes Transmit mode? Yes Write transmit data to ICDR Clear IRIC flag in ICCR [9] Set transmit data for 2nd byte onward. (Perform ICDR write and IRIC flag clear operations continuously.) No Master receive mode No
[8] Judge acknowledge signal from specified. slave device.
Read IRIC flag in ICCR [10] Wait for end of 1 byte transmission. No IRIC = 1? Yes Read ACKB bit in ICSR [11] Judge end of transmission. No Transmit complete? (ACKB = 1?) Yes Clear IRIC flag in ICCR [12] Generate stop condition. Write ACKE = 0 (ICCR) (Clear ACKB = 0) Write BBSY = 0 and SCP = 0 (ICCR) End
Figure 14.7 Flowchart for Master Transmit Mode (Example)
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The transmission procedure and operations synchronized with the ICDR writing are described below. 1. Perform initial settings as described in section 14.4.2, Initial Setting. 2. Read the BBSY flag in ICCR to confirm that the bus is free. 3. Set bits MST and TRS to 1 in ICCR to select master transmit mode. 4. Write 1 to BBSY and 0 to SCP. This changes SDA from high to low when SCL is high, and generates the start condition. 5. Then IRIC and IRTR flags are set to 1. If the IEIC bit in ICCR has been set to 1, an interrupt request is sent to the CPU. 6. After the start condition is detected, write the data (slave address + R/W) to ICDR. With the I2C bus format (when the FS bit in SAR or the FSX bit in SARX is 0), the first frame data following the start condition indicates the 7-bit slave address and transmit/receive direction (R/W). As indicating the end of the transfer, and so the IRIC flag is cleared to 0. After writing ICDR, clear IRIC continuously not to execute other interrupt handling routine. If one frame of data has been transmitted before the IRIC clearing, it can not be determine the end of transmission. The master device sequentially sends the transmission clock and the data written to ICDR using the timing shown in figure 14.8. The selected slave device (i.e. the slave device with the matching slave address) drives SDA low at the 9th transmit clock pulse and returns an acknowledge signal. 7. When one frame of data has been transmitted, the IRIC flag is set to 1 at the rise of the 9th transmit clock pulse. After one frame has been transmitted SCL is automatically fixed low in synchronization with the internal clock until the next transmit data is written. 8. Read the ACKB bit in ICSR to confirm that ACKB is cleared to 0. When the slave device has not acknowledged (ACKB bit is 1), operate the step [12] to end transmission, and retry the transmit operation. 9. Write the transmit data to ICDR. As indicating the end of the transfer, and so the IRIC flag is cleared to 0. Perform the ICDR write and the IRIC flag clearing sequentially, just as in point 6 in this flowchart. Transmission of the next frame is performed in synchronization with the internal clock. 10. When one frame of data has been transmitted, the IRIC flag is set to 1 at the rise of the 9th transmit clock pulse. After one frame has been transmitted SCL is automatically fixed low in synchronization with the internal clock until the next transmit data is written. 11. Read the ACKB bit in ICSR. Confirm that the slave device has been acknowledged (ACKB bit is 0). When there is data to be transmitted, go to the step [9] to continue next transmission. When the slave device has not acknowledged (ACKB bit is set to 1), operate the step [12] to end transmission.
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12. Clear the IRIC flag to 0. Write 0 to ACKE in ICCR, to clear received ACKB contents to 0. Write 0 to BBSY and SCP in ICCR. This changes SDA from low to high when SCL is high, and generates the stop condition.
Start condition generated SCL (Master output) SDA (Master output) SDA (Slave output) [5] IRIC IRTR ICDRT ICDRS Address + R/W Address + R/W Data 1 Data 1 Interrupt request Interrupt request 1 Bit 7 2 Bit 6 3 Bit 5 4 Bit 4 5 Bit 3 6 Bit 2 7 Bit 1 8 Bit 0 R/W [7] A 9 1 Bit 7 2 Bit 6
Slave address
Data 1
Note: Do not write data to ICDR. User processing [4] Write BBSY = 1 and SCP = 0 (start condition issued) [6] ICDR write [6] IRIC clearance [9] ICDR write [9] IRIC clearance
Figure 14.8 Example of Master Transmit Mode Operation Timing (MLS = WAIT = 0)
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Stop condition generated SCL (Master output) SDA (Master output) 8 Bit 0 Data 1 SDA (Slave output) [7] A 9 1 Bit 7 2 3 4 Bit 4 5 Bit 3 6 Bit 2 7 8 9
2
Bit 6 Bit 5
Bit 1 Bit 0 [10] A
Data 2
IRIC IRTR ICDR Data 1 Data 2
User processing
[9] ICDR write
[9] IRIC clearance
[11] ACKB read
[12] Write BBSY = 0 and SCP = 0 (stop condition issued) [12] IRIC clearance
Figure 14.9 Example of Master Transmit Mode Stop Condition Generation Timing (MLS = WAIT = 0) 14.4.4 Master Receive Operation
In I2C bus format master receive mode, the master device outputs the receive clock, receives data, and returns an acknowledge signal. The slave device transmits data. The master device transmits the data containing the slave address + R/W (0: read) in the 1st frame after a start condition is generated in the master transmit mode. After the slave device is selected the switch to receive operation takes place. (1) Receive Operation Using Wait States Figures 14.10 and 14.11 are flowcharts showing examples of the master receive mode (WAIT = 1).
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Master receive mode Set TRS = 0 (ICCR) Set ACKB = 0 (ICSR) Clear IRIC flag in ICCR Set WAIT = 1 (ICMR) Read ICDR [2] Receive start, dummy read. [1] Set to receive mode.
Read IRIC flag in ICCR No IRIC = 1? Yes No IRTR = 1? Yes Is next receive the last one? No Read ICDR Clear IRIC flag in ICCR Yes
[3] Receive wait state (IRIC set at falling edge of 8th clock cycle) or Wait for end of reception of 1 byte (IRIC set at rising edge of 9th clock cycle).
[4] Data receive completed judgment.
[5] Read receive data.
[6] Clear IRIC flag (cancel wait state).
Set ACKB = 1 (ICSR) 1 clock cycle wait state Set TRS = 1 (ICCR) Read ICDR Clear IRIC flag in ICCR
[7] Set acknowledge data for final receive. [8] Wait time until TRS setting. [9] Set TRS to generate stop condition. [10] Read receive data. [11] Clear IRIC flag (cancel wait state).
Read IRIC flag in ICCR No IRIC = 1? Yes IRTR = 1? No Clear IRIC flag in ICCR Yes
[12] Receive wait state (IRIC set at falling edge of 8th clock cycle) or Wait for end of reception of 1 byte (IRIC set at rising edge of 9th clock cycle).
[13] Data receive completed judgment.
[14] Clear IRIC flag (cancel wait state).
Set WAIT = 0 (ICMR) Clear IRIC flag in ICCR Read ICDR Write BBSY = 0 and SCP = 0 (ICCR) End
[15] Cancel wait mode Clear IRIC flag. (IRIC flag should be cleared when WAIT = 0.)
[16] Read final receive data. [17] Generate stop condition.
Figure 14.10 Flowchart for Master Receive Mode (Receiving Multiple Bytes) (WAIT = 1) (Example)
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Master receive mode Set TRS = 0 (ICCR) Set ACKB = 0 (ICSR) [1] Clear IRIC flag in ICCR Set WAIT = 1 (ICMR) Read ICDR [2] Receive start, dummy read. Set to receive mode
Read IRIC flag in ICCR No IRIC = 1? Yes Set ACKB = 1 (ICSR) Set TRS = 1 (ICCR) Clear IRIC flag in ICCR
[3]
Receive wait state (IRIC set at falling edge of 8th clock cycle)
[7] [9]
Set acknowledge data for final receive. Set TRS to generate stop condition.
[11] Clear IRIC flag (cancel wait state).
Read IRIC flag in ICCR No [12] Wait for end of reception of 1 byte. (IRIC set at rising edge of 9th clock cycle) IRIC = 1? Yes Set WAIT = 0 (ICMR) Clear IRIC flag in ICCR Read ICDR Write BBSY = 0 and SCP = 0 (ICCR) End [15] Cancel wait mode Clear IRIC flag. (IRIC flag should be cleared when WAIT = 0.) [16] Read final receive data. [17] Generate stop condition.
Figure 14.11 Flowchart for Master Receive Mode (Receiving 1 Byte) (WAIT = 1) (Example) The procedure for receiving data sequentially, using the wait states (WAIT bit) for synchronization with ICDR (ICDRR) read operations, is described below. The procedure below describes the operation for receiving multiple bytes. Note that some of the steps are omitted when receiving only 1 byte. Refer to figure 14.11 for details.
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[1] Clear the TRS bit in ICCR to 0 to switch from transmit mode to receive mode. Clear the ACKB bit in ICSR to 0 (acknowledge data setting). Clear the IRIC flag to 0, then set the WAIT bit in ICMR to 1. [2] When ICDR is read (dummy data read), reception is started, and the receive clock is output, and data received, in synchronization with the internal clock. [3] The IRIC flag is set to 1 by the following two conditions. At that point, an interrupt request is issued to the CPU if the IEIC bit in ICCR is set to 1. (1) The flag is set at the falling edge of the 8th clock cycle of the receive clock for 1 frame. SCL is automatically held low, in synchronization with the internal clock, until the IRIC flag is cleared. (2) The flag is set at the rising edge of the 9th clock cycle of the receive clock for 1 frame. The IRTR flag is set to 1, indicating that reception of 1 frame of data has ended. The master device continues to output the receive clock for the receive data. [4] Read the IRTR flag in ICSR. If the IRTR flag value is 0, the wait state is cancelled by clearing the IRIC flag as described in step [6] below. If the IRTR flag value is 1 and the next receive data is the final receive data, perform the end processing described in step [7] below. [5] If the IRTR flag value is 1, read the ICDR receive data. [6] Clear the IRIC flag to 0. The reading of the ICDR flag described in step [5] and the clearing of the IRIC flag to 0 should be performed consecutively, with no interrupt processing occurring between them. During wait operation, clear the IRIC flag to 0 when the value of counter BC2 to BC0 is 2 or greater. If the IRIC flag is cleared to 0 when the value of counter BC2 to BC0 is 1 or 0, it will not be possible to determine when the transfer has completed. If condition [3]-1 is true, the master device drives SDA to low level and returns an acknowledge signal when the receive clock outputs the 9th clock cycle. Further data can be received by repeating steps [3] through [6]. [7] Set the ACKB bit in ICSR to 1 to set the acknowledge data for the final receive. [8] Wait for at least 1 clock cycle after the IRIC flag is set to 1 and then wait for the rising edge of the 1st clock cycle of the next receive data. [9] Set the TSR bit in ICCR to 1 to switch from the receive mode to the transmit mode. The TSR bit setting value at this point becomes valid when the rising edge of the next 9th clock cycle is input. [10] Read the ICDR receive data. [11] Clear the IRIC flag to 0. As in step [6], read the ICDR flag and clear the IRIC flag to 0 consecutively, with no interrupt processing occurring between them. During wait operation, clear the IRIC flag to 0 when the value of counter BC2 to BC0 is 2 or greater.
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[12] The IRIC flag is set to 1 by the following two conditions. (1) The flag is set at the falling edge of the 8th clock cycle of the receive clock for 1 frame. SCL is automatically held low, in synchronization with the internal clock, until the IRIC flag is cleared. (2) The flag is set at the rising edge of the 9th clock cycle of the receive clock for 1 frame. The IRTR flag is set to 1, indicating that reception of 1 frame of data has ended. The master device continues to output the receive clock for the receive data. [13] Read the IRTR flag in ICSR. If the IRTR flag value is 0, the wait state is cancelled by clearing the IRIC flag as described in step [14] below. If the IRTR flag value is 1 and the receive operation has finished, perform the issue stop condition processing described in step [15] below. [14] If the IRTR flag value is 0, clear the IRIC flag to 0 to cancel the wait state. Return to reading the IRIC flag, as described in step [12], to detect the end of the receive operation. [15] Clear the WAIT bit in ICMR to 0 to cancel the wait mode. Then clear the IRIC flag to 0. The IRIC flag should be cleared when the value of WAIT is 0. (The stop condition may not be output properly when the issue stop condition instruction is executed if the WAIT bit was cleared to 0 after the IRIC flag is cleared to 0.) [16] Read the final receive data in ICDR. [17] Write 0 to BBSY and SCP in ICCR. This changes SDA from low to high when SCL is high, and generates the stop condition.
Master transmit mode SCL (master output) SDA (slave output)
Master receive mode
9 A
1
2
3
4
5
6
7
8
9
1
2
3
4
5
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Data 1
Bit 1 Bit 0 [3] A [3]
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Data 2
SDA (master output) IRIC IRTR ICDR
[4] IRTR = 0
[4] IRTR = 1
Data 1
User processing
[2] ICDR read (dummy read) [1] TRS cleared to 0 IRIC clearance
[6] IRIC clearance (cancel wait)
[5] ICDR read (data 1)
[6] IRIC clearance
Figure 14.12 Example of Master Receive Mode Operation Timing (MLS = ACKB = 0, WAIT = 1)
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[8] 1 clock cycle wait time SCL (master output)
Stop condition generated
4 5 6 7 8 9
8
9
1
2
3
SDA Bit 0 (slave output) Data 2 [3] SDA (master output) IRIC IRTR ICDR
[4] IRTR = 0
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 [3] A Data 3
Bit 1 Bit 0 [12] A [12]
[4] IRTR = 1
[13] IRTR = 0
[13] IRTR = 1
Data 1
Data 2
Data 3
User processing
[6] IRIC clearance
[11] IRIC clearance [10] ICDR read (data 2) [9] TRS set to 1
[14] IRIC clearance [15] WAIT cleared to 0 IRIC clearance [17] Stop condition issued
[7] ACKB set to 1
[16] ICDR read (data 3)
Figure 14.13 Example of Master Receive Mode Stop Condition Generation Timing (MLS = ACKB = 0, WAIT = 1) 14.4.5 Slave Receive Operation
In slave receive mode, the master device outputs the transmit clock and transmit data, and the slave device returns an acknowledge signal. The slave device compares its own address with the slave address in the first frame following the establishment of the start condition issued by the master device. If the addresses match, the slave device operates as the slave device designated by the master device. Figure 14.14 is a flowchart showing an example of slave receive mode operation.
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Start Initialize Set MST = 0 and TRS = 0 in ICCR Set ACKB = 0 in ICSR Read IRIC in ICCR No [2] IRIC = 1? Yes Read AAS and ADZ in ICSR AAS = 1 and ADZ = 0? Yes Read TRS in ICCR TRS = 0? Yes Is next receive the last one? No Read ICDR Clear IRIC in ICCR Read IRIC in ICCR No IRIC = 1? Yes [4] Yes No Slave transmit mode No General call address processing * Description omitted [1]
[3] [1] Select slave receive mode. [2] Wait for the first byte to be received (slave address). [3] Start receiving. The first read is a dummy read. [4] Wait for the transfer to end. [5] Set acknowledge data for the last receive. [6] Start the last receive. [7] Wait for the transfer to end. [8] Read the last receive data.
Set ACKB = 0 in ICSR Read ICDR Clear IRIC in ICCR Read IRIC in ICCR No IRIC = 1? Yes Read ICDR Clear IRIC in ICCR End
[5] [6]
[7]
[8]
Figure 14.14 Flowchart for Slave Transmit Mode (Example)
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The reception procedure and operations in slave receive mode are described below. 1. Set the ICE bit in ICCR to 1. Set the MLS bit in ICMR and the MST and TRS bits in ICCR according to the operating mode. 2. When the start condition output by the master device is detected, the BBSY flag in ICCR is set to 1. 3. When the slave address matches in the first frame following the start condition, the device operates as the slave device specified by the master device. If the 8th data bit (R/W) is 0, the TRS bit in ICCR remains cleared to 0, and slave receive operation is performed. 4. At the 9th clock pulse of the receive frame, the slave device drives SDA low and returns an acknowledge signal. At the same time, the IRIC flag in ICCR is set to 1. If the IEIC bit in ICCR has been set to 1, an interrupt request is sent to the CPU. If the RDRF internal flag has been cleared to 0, it is set to 1, and the receive operation continues. If the RDRF internal flag has been set to 1, the slave device drives SCL low from the fall of the receive clock until data is read into ICDR. 5. Read ICDR and clear the IRIC flag in ICCR to 0. The RDRF flag is cleared to 0. Read the IRDR flag and clear the IRIC flag to 0 consecutively, with no interrupt processing occurring between them. If the time needed to transmit one byte of data elapses before the IRIC flag is cleared, it will not be possible to determine when the transfer has completed. Receive operations can be performed continuously by repeating steps [4] and [5]. When SDA is changed from low to high when SCL is high, and the stop condition is detected, the BBSY flag in ICCR is cleared to 0.
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Start condition issuance SCL (master output) SCL (slave output) SDA (master output) SDA (slave output)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 7 Bit 6
1
2
3
4
5
6
7
8
9
1
2
Slave address
R/W
[4] A
Data 1
RDRF
IRIC
ICDRS
Address + R/W
ICDRR
Address + R/W
User processing
[5] ICDR read
[5] IRIC clearance
Figure 14.15 Example of Slave Receive Mode Operation Timing (1) (MLS = ACKB = 0)
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SCL (master output) SCL (slave output) SDA (master output)
7
8
9
1
2
3
4
5
6
7
8
9
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Data 1 SDA (slave output)
[4]
Data 2
[4]
A
A
RDRF
IRIC
ICDRS
Data 1
Data 2
ICDRR
Data 1
Data 2
User processing
[5] ICDR read [5] IRIC clearance
Figure 14.16 Example of Slave Receive Mode Operation Timing (2) (MLS = ACKB = 0)
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14.4.6
Slave Transmit Operation
If the slave address matches to the address in the first frame (address reception frame) following the start condition detection when the 8th bit data (R/W) is 1 (read), the TRS bit in ICCR is automatically set to 1 and the mode changes to slave transmit mode. Figure 14.17 shows the sample flowchart for the operations in slave transmit mode.
Slave transmit mode Clear IRIC in ICCR Write transmit data in ICDR Clear IRIC in ICCR Read IRIC in ICCR [1], [2] If the slave address matches to the address in the first frame following the start condition detection and the R/W bit is 1 in slave recieve mode, the mode changes to slave transmit mode. [3], [5] Set transmit data for the second and subsequent bytes.
[3], [4] Wait for 1 byte to be transmitted.
No
IRIC = 1?
Yes
Read ACKB in ICSR [4] Determine end of transfer.
No
End of transmission (ACKB = 1)?
Yes
Clear IRIC in ICCR [6] Read IRIC in ICCR [7] Clear acknowledge bit data [8] Set slave receive mode. [9] Dummy read (to release the SCL line). [10] Wait for stop condition
Clear ACKE to 0 in ICCR (ACKB = 0 clear)
Set TRS = 0 in ICCR Read ICDR Read IRIC in ICCR
No
IRIC = 1?
Yes
Clear IRIC in ICCR End
Figure 14.17 Sample Flowchart for Slave Transmit Mode
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In slave transmit mode, the slave device outputs the transmit data, while the master device outputs the receive clock and returns an acknowledge signal. The transmission procedure and operations in slave transmit mode are described below. 1. Initialize slave receive mode and wait for slave address reception. 2. When the slave address matches in the first frame following detection of the start condition, the slave device drives SDA low at the 9th clock pulse and returns an acknowledge signal. If the 8th data bit (R/W) is 1, the TRS bit in ICCR is set to 1, and the mode changes to slave transmit mode automatically. The IRIC flag is set to 1 at the rise of the 9th clock. If the IEIC bit in ICCR has been set to 1, an interrupt request is sent to the CPU. At the same time, the TDRE internal flag is set to 1. The slave device drives SCL low from the fall of the transmit clock until ICDR data is written, to disable the master device to output the next transfer clock. 3. After clearing the IRIC flag to 0, write data to ICDR. At this time, the TDRE internal flag is cleared to 0. The written data is transferred to ICDRS, and the TDRE internal and IRIC flags are set to 1 again. The slave device sequentially sends the data written into ICDRS in accordance with the clock output by the master device. The IRIC flag is cleared to 0 to detect the end of transmission. Processing from the ICDR writing to the IRIC flag clearing should be performed continuously. Prevent any other interrupt processing from being inserted. If the time for transmission of one frame of data has passed before the IRIC clearing, the end of transmission cannot be determined. 4. The master device drives SDA low at the 9th clock pulse, and returns an acknowledge signal. As this acknowledge signal is stored in the ACKB bit in ICSR, this bit can be used to determine whether the transfer operation was performed successfully. When one frame of data has been transmitted, the IRIC flag in ICCR is set to 1 at the rise of the 9th transmit clock pulse. When the TDRE internal flag is 0, the data written into ICDR is transferred to ICDRS, transmission starts, and the TDRE internal and IRIC flags are set to 1 again. If the TDRE internal flag has been set to 1, this slave device drives SCL low from the fall of the transmit clock until data is written to ICDR. 5. To continue transmission, write the next data to be transmitted into ICDR. The TDRE internal flag is cleared to 0. The IRIC flag is cleared to 0 to detect the end of transmission. Processing from the ICDR register writing to the IRIC flag clearing should be performed continuously. Prevent any other interrupt processing from being inserted. Transmit operations can be performed continuously by repeating steps [4] and [5]. 6. Clear the IRIC flag to 0. 7. To end transmission, clear the ACKE bit in ICCR to 0, to clear the acknowledge bit stored in the ACKB bit to 0. 8. Clear the TRS bit to 0 for the next address reception, to set slave receive mode. 9. Dummy-read ICDR to release SDA on the slave side.
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10. When the stop condition is detected, that is, when SDA is changed from low to high when SCL is high, the BBSY flag in ICCR is cleared to 0 and the STOP flag in ICSR is set to 1. At the same time, the IRIC flag is set to 1. If the IRIC flag has been set, it is cleared to 0.
Slave receive mode SCL (master output)
Slave transmit mode
8
9
1
2
3
4
5
6
7
8
9
1
2
SCL (slave output)
SDA (slave output)
A
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
[2]
Data 1
Data 2
SDA (master output) R/W
A
TDRE
[4]
IRIC
ICDRT
Data 1
Data 2
ICDRS User processing
[3] ICDR write [3] IRIC clearance
Data 1
[3] IRIC clearance
Data 2
[5] IRIC clearance [5] ICDR write
Figure 14.18 Example of Slave Transmit Mode Operation Timing (MLS = 0)
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14.4.7
IRIC Setting Timing and SCL Control
The interrupt request flag (IRIC) is set at different times depending on the WAIT bit in ICMR, the FS bit in SAR, and the FSX bit in SARX. If the TDRE or RDRF internal flag is set to 1, SCL is automatically held low after one frame has been transferred; this timing is synchronized with the internal clock. Figure 14.19 shows the IRIC set timing and SCL control.
(a) When WAIT = 0, and FS = 0 or FSX = 0 (I2C bus format, no wait)
SCL 7 7 8 8 9 A 1 1 2 2
SDA IRIC
User processing
Write to ICDR (transmit) Clear IRIC or read ICDR (receive)
(b) When WAIT = 1, and FS = 0 or FSX = 0 (I2C bus format, wait inserted)
SCL 8 8 9 A 1 1 2 2
SDA IRIC
User processing
Clear Write to ICDR (transmit) Clear IRIC or read ICDR (receive) IRIC
(c) When FS = 1 and FSX = 1 (synchronous serial format)
SCL 7 7 8 8 1 1 2 2
SDA IRIC
User processing
Write to ICDR (transmit) or read ICDR (receive)
Clear IRIC
Figure 14.19 IRIC Setting Timing and SCL Control
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14.4.8
Operation Using the DTC (H8S/2268 Group Only)
The I2C bus format provides for selection of the slave device and transfer direction by means of the slave address and the R/W bit, confirmation of reception with acknowledge bit, indication of the last frame, and so on. Therefore, continuous data transfer using the DTC must be carried out in conjunction CPU processing by means of interrupts. Table 14.5 shows some example of processing using the DTC. These examples assume that the number of transfer data bytes is know in slave mode. Table 14.5 Flags and Transfer States
Item Master Transmit Master Receive Mode Mode Slave Transmit Mode Slave Receive Mode Reception by CPU (ICDR read)
Slave address + Transmission by Transmission by Reception by CPU R/W bit DTC (ICDR write) CPU (ICDR write) (ICDR read) Transmission/ reception Dummy data read Processing by CPU (ICDR read)
Reception by DTC (ICDR read)
Actual data Transmission by Reception by DTC Transmission by transmission/re DTC (ICDR write) (ICDR read) DTC (ICDR write) ception Dummy data (HFF) write Last frame processing Transfer request processing after last frame processing Setting of number of DTC transfer data frames Not necessary
Processing by DTC (ICDR write) Reception by CPU (ICDR read)
Reception by CPU Not necessary (ICDR read)
1st time: Clearing Not necessary by CPU 2nd time: End condition issuance by CPU Transmission: Reception: Actual Actual data count data count + 1 (+ 1 equivalent to slave address + R/W bits)
Automatic clearing Not necessary on detection of end condition during transmission of dummy data (HFF) Transmission: Reception: Actual Actual data count + data count 1 (+ 1 equivalent to dummy data (HFF))
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14.4.9
Noise Canceler
The logic levels at the SCL and SDA pins are routed through noise cancellors before being latched internally. Figure 14.20 shows a block diagram of the noise cancelled circuit. The noise cancellor consists of two cascaded latches and a match detector. The SCL (or SDA) input signal is sampled on the system clock, but is not passed forward to the next circuit unless the outputs of both latches agree. If they do not agree, the previous value is held.
Sampling clock
C SCL or SDA input signal D Latch Q D
C Q Latch Match detector Internal SCL or SDA signal
System clock period Sampling clock
Figure 14.20 Block Diagram of Noise Cancellor 14.4.10 Initialization of Internal State The IIC has a function for forcible initialization of its internal state if a deadlock occurs during communication. Initialization is executed by (1) setting bits CLR3 to CLR0 in the DDCSWR register or (2) clearing the ICE bit. For details of settings for bits CLR3 to CLR0, see section 14.3.8, DDC Switch Register (DDCSWR). Scope of Initialization: The initialization executed by this function covers the following items: * TDRE and RDRF internal flags * Transmit/receive sequencer and internal operating clock counter * Internal latches for retaining the output state of the SCL and SDA pins (wait, clock, data output, etc.)
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The following items are not initialized: * Actual register values (ICDR, SAR, SARX, ICMR, ICCR, ICSR, DDCSWR, and STCR) * Internal latches used to retain register read information for setting/clearing flags in the ICMR, ICCR, ICSR, and DDCSWR registers * The value of the ICMR register bit counter (BC2 to BC0) * Generated interrupt sources (interrupt sources transferred to the interrupt controller) Notes on Initialization: * Interrupt flags and interrupt sources are not cleared, and so flag clearing measures must be taken as necessary. * Basically, other register flags are not cleared either, and so flag clearing measures must be taken as necessary. * When initialization is performed by means of the DDCSWR register, the write data for bits CLR3 to CLR0 is not retained. To perform IIC clearance, bits CLR3 to CLR0 must be written to simultaneously using an MOV instruction. Do not use a bit manipulation instruction such as BCLR. Similarly, when clearing is required again, all the bits must be written to simultaneously in accordance with the setting. * If a flag clearing setting is made during transmission/reception, the IIC module will stop transmitting/receiving at that point and the SCL and SDA pins will be released. When transmission/reception is started again, register initialization, etc., must be carried out as necessary to enable correct communication as a system. The value of the BBSY bit cannot be modified directly by this module clear function, but since the stop condition pin waveform is generated according to the state and release timing of the SCL and SDA pins, the BBSY bit may be cleared as a result. Similarly, state switching of other bits and flags may also have an effect. To prevent problems caused by these factors, the following procedure should be used when initializing the IIC state. 1. Execute initialization of the internal state according to the setting of bits CLR3 to CLR0, or according to the ICE bit. 2. Execute a stop condition issuance instruction (write 0 to BBSY and SCP) to clear the BBSY bit to 0, and wait for two transfer rate clock cycles. 3. Re-execute initialization of the internal state according to the setting of bits CLR3 to CLR0, or according to the ICE bit. 4. Initialize (re-set) the IIC registers.
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14.5
Interrupt Source
IICI is the interrupt source of IIC. Table 14.6 shows each interrupt source and its priority. The ICCR interrupt enable bit sets each interrupt and the setting is independently sent to the interrupt controller. Table 14.6 IIC Interrupt Source
Channel 0 1 Name IICI0 IICI1 Enable Bit IEIC IEIC Interrupt Source I C bus interface interrupt request I C bus interface interrupt request
2 2
Interrupt Flag IRIC IRIC
Interrupt Priority High
Low
14.6
Usage Notes
1. In master mode, if an instruction to generate a start condition is issued and then an instruction to generate a stop condition is issued before the start condition is output to the I2C bus, neither condition will be output correctly. To output consecutive start and stop conditions, after issuing the instruction that generates the start condition, read the relevant ports, check that SCL and SDA are both low, then issue the instruction that generates the stop condition. Note that SCL may not yet have gone low when BBSY is cleared to 0. 2. Either of the following two conditions will start the next transfer. Pay attention to these conditions when reading or writing to ICDR. Write access to ICDR when ICE = 1 and TRS = 1 (including automatic transfer from ICDRT to ICDRS) Read access to ICDR when ICE = 1 and TRS = 0 (including automatic transfer from ICDRS to ICDRR) 3. Table 14.7 shows the timing of SCL and SDA output in synchronization with the internal clock. Timings on the bus are determined by the rise and fall times of signals affected by the bus load capacitance, series resistance, and parallel resistance.
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Table 14.7 I2C Bus Timing (SCL and SDA Output)
Item SCL output cycle time SCL output high pulse width SCL output low pulse width SDA output bus free time Start condition output hold time Retransmission start condition output setup time Stop condition output setup time Data output setup time (master) Data output setup time (slave) Data output hold time tSDAHO Symbol tSCLO tSCLHO tSCLLO tBUFO tSTAHO tSTASO tSTOSO tSDASO Output Timing 28 tcyc to 256 tcyc 0.5 tSCLO 0.5 tSCLO 0.5 tSCLO - 1 tcyc 0.5 tSCLO - 1 tcyc 1 tSCLO 0.5 tSCLO + 2 tcyc 1 tSCLLO - 3 tcyc 1 tSCLL - 3 tcyc 3 tcyc Unit ns ns ns ns ns ns ns ns ns ns Notes
4. SCL and SDA inputs are sampled in synchronization with the internal clock. The AC timing therefore depends on the system clock cycle tcyc, as shown in table 25.8. Note that the I2C bus interface AC timing specifications will not be met with a system clock frequency of less than 5 MHz. 5. The I2C bus interface specification for the SCL rise time tsr is under 1000 ns (300 ns for highspeed mode). In master mode, the I2C bus interface monitors the SCL line and synchronizes one bit at a time during communication. If tsr (the time for SCL to go from low to VIH) exceeds the time determined by the input clock of the I2C bus interface, the high period of SCL is extended. The SCL rise time is determined by the pull-up resistance and load capacitance of the SCL line. To insure proper operation at the set transfer rate, adjust the pull-up resistance and load capacitance so that the SCL rise time does not exceed the values given in the table in table 14.8.
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Table 14.8 Permissible SCL Rise Time (tsr) Values
Time Indication tcyc IICX Indication 0 7.5 tcyc Normal mode High-speed mode 1 17.5 tcyc Normal mode High-speed mode I C Bus Specification (Max.) 1000 ns 300 ns 1000 ns 300 ns
2
= 5 MHz 1000 ns 300 ns 1000 ns 300 ns
= 8 MHz 937 ns 300 ns 1000 ns 300 ns
= 10 MHz 750 ns 300 ns 1000 ns 300 ns
= 16 MHz 468 ns 300 ns 1000 ns 300 ns
= 20 MHz 375 ns 300 ns 875 ns 300 ns
6. The I2C bus interface specifications for the SCL and SDA rise and fall times are under 1000 ns and 300 ns. The I2C bus interface SCL and SDA output timing is prescribed by tScyc and tcyc, as shown in table 14.7. However, because of the rise and fall times, the I2C bus interface specifications may not be satisfied at the maximum transfer rate. Table 14.9 shows output timing calculations for different operating frequencies, including the worst-case influence of rise and fall times. The values in the above table will vary depending on the settings of the IICX bit and bits CKS0 to CKS2. Depending on the frequency it may not be possible to achieve the maximum transfer rate; therefore, whether or not the I2C bus interface specifications are met must be determined in accordance with the actual setting conditions. tBUFO fails to meet the I2C bus interface specifications at any frequency. The solution is either (a) to provide coding to secure the necessary interval (approximately 1 s) between issuance of a stop condition and issuance of a start condition, or (b) to select devices whose input timing permits this output timing for use as slave devices connected to the I2C bus. tSCLLO in high-speed mode and tSTASO in standard mode fail to satisfy the I2C bus interface specifications for worst-case calculations of tSr/tSf. Possible solutions that should be investigated include (a) adjusting the rise and fall times by means of a pull-up resistor and capacitive load, (b) reducing the transfer rate to meet the specifications, or (c) selecting devices whose input timing permits this output timing for use as slave devices connected to the I2C bus.
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Table 14.9 I2C Bus Timing (with Maximum Influence of tSr/tSf)
Time Indication (at Maximum Transfer Rate) [ns] I C Bus tSr/tSf Influence Item tSCLHO tcyc Indication 0.5 tSCLO (-tSr) Standard mode (Max.) -1000 Specification (Min.) 4000 600 4700 1300 4700 1300 4000 600 4700 600 4000 600 250 100 250 = 5 MHz 4000 950 4750
1 1000* 2
= 8 MHz 4000 950 4750
1 1000*
= 10 MHz 4000 950 4750
1 1000*
= 16 MHz 4000 950 4750
1 1000*
= 20 MHz 4000 950 4750 1000* 3950* 900 *1 4700 950 9000 2200 4100 1050 3550 850 3550
1 1
High-speed mode -300 tSCLLO 0.5 tSCLO (-tSf) Standard mode -250
High-speed mode -250 tBUFO 0.5 tSCLO -1 tcyc Standard mode ( -tSr) tSTAHO -1000
3800* 750 *
1
1
3875* 825 *1 4625 875 9000 2200 4250 1200 3325 625 3325
1
3900* 850 *1 4650 900 9000 2200 4200 1150 3400 700 3400
1
3938* 888 *1 4688 938 9000 2200 4125 1075 3513 813 3513
1
High-speed mode -300 -250
0.5 tSCLO -1 tcyc Standard mode (-tSf)
4550 800 9000 2200 4400 1350 3100 400 3100
High-speed mode -250 Standard mode -1000
tSTASO
1 tSCLO (-tSr)
High-speed mode -300 tSTOSO 0.5 tSCLO + 2 tcyc Standard mode (-tSr) tSDASO (master) tSDASO (slave) tSDAHO 1tSCLLO*2 -3tcyc (-tSr) 1 tSCLL*2 - 2 3 tcyc* (-tSr) 3 tcyc -1000
High-speed mode -300 Standard mode -1000
High-speed mode -300 Standard mode -1000
High-speed mode -300 Standard mode 0
100 0 0
400 600 600
625 375 375
700 300 300
813 188 188
850 150 150
High-speed mode 0
2
Notes: 1. Does not meet the I C bus interface specification. Remedial action such as the following is necessary: (a) secure a start/stop condition issuance interval; (b) adjust the rise and fall times by means of a pull-up resistor and capacitive load; (c) reduce the transfer rate; (d) select slave devices whose input timing permits this output timing. The values in the above table will vary depending on the settings of the IICX bit and bits CKS0 to CKS2. Depending on the frequency it may not be possible to achieve the 2 maximum transfer rate; therefore, whether or not the I C bus interface specifications are met must be determined in accordance with the actual setting conditions. 2 2. Calculated using the I C bus specification values (standard mode: 4700 ns min.; highspeed mode: 1300 ns min.).
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7. Note on ICDR Read at End of Master Reception To halt reception after completion of a receive operation in master receive mode, set the TRS bit to 1 and write 0 to BBSY and SCP in ICCR. This changes the SDA pin from low to high when the SCL pin is high, and generates the stop condition. After this, receive data can be read by means of an ICDR read, but if data remains in the buffer the ICDRS receive data will not be transferred to ICDR, and so it will not be possible to read the second byte of data. If it is necessary to read the second byte of data, issue the stop condition in master receive mode (i.e. with the TRS bit cleared to 0). When reading the receive data, first confirm that the BBSY bit in ICCR is cleared to 0, the stop condition has been generated, and the bus has been released, then read ICDR with TRS cleared to 0. Note that if the receive data (ICDR data) is read in the interval between execution of the instruction for issuance of the stop condition (writing of 0 to BBSY and SCP in ICCR) and the actual generation of the stop condition, the clock may not be output correctly in subsequent master transmission. Clearing of the MST bit after completion of master transmission/reception, or other modifications of IIC control bits to change the transmit/receive operating mode or settings, must be carried out during interval (a) in figure 14.21 (after confirming that the BBSY bit has been cleared to 0 in the ICCR register).
Stop condition (a) SDA SCL Internal clock BBSY bit Master receive mode ICDR reading prohibited Bit 0 8 A 9 Start condition
Execution of stop condition issuance instruction (0 written to BBSY and SCP)
Confirmation of stop condition generation (0 read from BBSY)
Start condition issuance
Figure 14.21 Points for Attention Concerning Reading of Master Receive Data
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8. Notes on Start Condition Issuance for Retransmission Depending on the timing combination with the start condition issuance and the subsequently writing data to ICDR, it may not be possible to issue the retransmission and the data transmission after retransmission condition issuance. After start condition issuance is done and determined the start condition, write the transmit data to ICDR, as shown below. Figure 14.22 shows the timing of start condition issuance for retransmission, and the timing for subsequently writing data to ICDR, together with the corresponding flowchart.
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
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[1] Wait for end of 1-byte transfer IRIC = 1? Yes Clear IRIC in ICSR [3] Issue restart condition instruction for transmission Start condition issuance? Yes Read SCL pin SCL = Low? Yes Write BBSY = 1, SCP = 0 (ICSR) [3] No [2] [5] Set transmit data (slave address + R/W) No Other processing [4] Determine whether start condition is generated or not No [1] [2] Determine whether SCL is low
IRIC = 1? Yes Write transmit data to ICDR
No
[4]
Note: Program so that processing from [3] to [5] is executed continuously.
[5]
Start condition (retransmission) SCL
9
SDA
ACK
Bit 7 Data output
IRIC
[5] ICDR write (next transmit data) [4] IRIC determination [3] (Restart) Start condition instruction issuance [2] Detemination of SCL = Low [1] IRIC determination
Figure 14.22 Flowchart and Timing of Start Condition Instruction Issuance for Retransmission
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
9. Notes on I2C Bus Interface Stop Condition Instruction Issuance If the rise time of the 9th SCL clock exceeds the specification because the bus load capacitance is large, or if there is a slave device of the type that drives SCL low to effect a wait, after rising of the 9th SCL clock, issue the stop condition after reading SCL and determining it to be low, as shown below.
9th clock VIH High period secured
SCL
As waveform rise is late, SCL is detected as low SDA Stop condition IRIC [1] Determination of SCL = Low [2] Stop condition instruction isuuance
Figure 14.23 Timing of Stop Condition Issuance 10. Notes on IRIC Flag Clearance When Using Wait Function If the SCL rise time exceeds the designated duration or if the slave device is of the type that keeps SCL low and applies a wait state when the wait function is used in the master mode of the I2C bus interface, read SCL and clear the IRIC flag after determining that SCL has gone low, as shown below. Clearing the IRIC flag to 0 when WAIT is set to 1 and SCL is being held at high level can cause the SDA value to change before SCL goes low, resulting in a start condition or stop condition being generated erroneously.
SCL = high duration maintained
SCL
VIH
SCL = low detected SDA IRIC
[1] Judgement that SCL = low [2] IRIC clearance
Figure 14.24 IRIC Flag Clearance in WAIT = 1 Status
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
11. Notes on ICDR Reads and ICCR Access in Slave Transmit Mode In a transmit operation in the slave mode of the I2C bus interface, do not read the ICDR register or read or write to the ICCR register during the period indicated by the shaded portion in figure 14.25. Normally, when interrupt processing is triggered in synchronization with the rising edge of the 9th clock cycle, the period in question has already elapsed when the transition to interrupt processing takes place, so there is no problem with reading the ICDR register or reading or writing to the ICCR register. To ensure that the interrupt processing is performed properly, one of the following two conditions should be applied. (1) Make sure that reading received data from the ICDR register, or reading or writing to the ICCR register, is completed before the next slave address receive operation starts. (2) Monitor the BC2 to BC0 counter in the ICMR register and, when the value of BC2 to BC0 is 000 (8th or 9th clock cycle), allow a waiting time of at least 2 transfer clock cycles in order to involve the problem period in question before reading from the ICDR register, or reading or writing to the ICCR register.
Waveforms if problem occurs SDA SCL TRS R/W 8 Address received Period when ICDR reads and ICCR reads and writes are prohibited (6 system clock cycles) Detection of 9th clock cycle rising edge A 9 Data transmission ICDR write Bit 7
Figure 14.25 ICDR Read and ICCR Access Timing in Slave Transmit Mode
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
12. Notes on TRS Bit Setting in Slave Mode From the detection of the rising edge of the 9th clock cycle or of a stop condition to when the rising edge of the next SCL pin signal is detected (the period indicated as (a) in figure 14.26) in the slave mode of the I2C bus interface, the value set in the TRS bit in the ICCR register is effective immediately. However, at other times (indicated as (b) in figure 14.26) the value set in the TRS bit is put on hold until the next rising edge of the 9th clock cycle or stop condition is detected, rather than taking effect immediately. This results in the actual internal value of the TRS bit remaining 1 (transmit mode) and no acknowledge bit being sent at the 9th clock cycle address receive completion in the case of an address receive operation following a restart condition input with no stop condition intervening. When receiving an address in the slave mode, clear the TRS bit to 0 during the period indicated as (a) in figure 14.26. To cancel the holding of the SCL bit low by the wait function in the slave mode, clear the TRS bit to 0 and then perform a dummy read of the ICDR register.
Restart condition (a) SDA SCL TRS 8 9 1 2 3 4 5 6 7 8 (b) A 9
Data transmission
Address reception
TRS bit setting hold time ICDR dummy read TRS bit set Detection of 9th clock cycle rising edge Detection of 9th clock cycle rising edge
Figure 14.26 TRS Bit Setting Timing in Slave Mode
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
13. Notes on ICDR Reads in Transmit Mode and ICDR Writes in Receive Mode When attempting to read ICDR in the transmit mode (TRS = 1) or write to ICDR in the receive mode (TRS = 0) under certain conditions, the SCL pin may not be held low after the completion of the transmit or receive operation and a clock may not be output to the SCL bus line before the ICDR register access operation can take place properly. When accessing ICDR, always change the setting to the transmit mode before performing a read operation, and always change the setting to the receive mode before performing a write operation. 14.Notes on ACKE Bit and TRS Bit in Slave Mode When using the I2C bus interface, if an address is received in the slave mode immediately after 1 is received as an acknowledge bit (ACKB = 1) in the transmit mode (TRS = 1), an interrupt may be generated at the rising edge of the 9th clock cycle if the address does not match. When performing slave mode operations using the I2C bus interface module, make sure to do the following. (1) When a 1 is received as an acknowledge bit for the final transmit data after completing a series of transmit operations, clear the ACKE bit in the ICCR register to 0 to initialize the ACKB bit to 0. (2) In the slave mode, change the setting to the receive mode (TRS = 0) before the start condition is input. To ensure that the switch from the slave transmit mode to the slave receive mode is accomplished properly, end the transmission as described in figure 14.17. 15. Notes on Arbitration Lost in Master Mode The I2C bus interface recognizes the data in transmit/receive frame as an address when arbitration is lost in master mode and a transition to slave receive mode is automatically carried out. When arbitration is lost not in the first frame but in the second frame or subsequent frame, transmit/receive data that is not an address is compared with the value set in the SAR or SARX register as an address. If the receive data matches with the address in the SAR or SARX register, the I2C bus interface erroneously recognizes that the address call has occurred. (See figure 14.27.) In multi-master mode, a bus conflict could happen. When The I2C bus interface is operated in master mode, check the state of the AL bit in the ICSR register every time after one frame of data has been transmitted or received. When arbitration is lost during transmitting the second frame or subsequent frame, take avoidance measures.
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
* Arbitration is lost * The AL flag in ICSR is set to 1
I2C bus interface (Master transmit mode)
S
SLA
R/W A
Transmit data match Transmit timing match
DATA1
Transmit data does not match
Other device (Master transmit mode)
S
SLA
R/W A
DATA2
A
DATA3
A
Data contention bus interface (Slave receive mode) I2C S SLA R/W A SLA R/W A DATA4 A
* Receive address is ignored
* Automatically transferred to slave receive mode * Receive data is recognized as an address * When the receive data matches to the address set in the SAR or SARX register, the I2C bus interface operates as a slave device.
Figure 14.27 Diagram of Erroneous Operation when Arbitration Is Lost Though it is prohibited in the normal I2C protocol, the same problem may occur when the MST bit is erroneously set to 1 and a transition to master mode is occurred during data transmission or reception in slave mode. In multi-master mode, pay attention to the setting of the MST bit when a bus conflict may occur. In this case, the MST bit in the ICCR register should be set to 1 according to the order below. (1) Make sure that the BBSY flag in the ICCR register is 0 and the bus is free before setting the MST bit. (2) Set the MST bit to 1. (3) To confirm that the bus was not entered to the busy state while the MST bit is being set, check that the BBSY flag in the ICCR register is 0 immediately after the MST bit has been set. 16. Notes on Wait Operation in Master Mode When attempting to use the wait function in master mode, if the interrupt flag IRIC bit is cleared from 1 to 0 between the falling edges of the seventh and eighth clock pulses, the LSI may fail to enter wait status after the falling edge of the eighth clock pulse and instead output the ninth clock pulse continuously. When using the wait function, keep the following points in mind with regard to clearing the IRIC flag. Ensure that the IRIC flag is set to 1 at the rising edge of the ninth clock pulse and cleared to 0 before the rising edge of the seventh clock pulse (when the counter value in BC2 to BC0 is 2 or higher).
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
If clearing of the IRIC flag is delayed due to interrupt handling or the like and the BC counter value is 1 or 0, confirm that the SCL pin signal is low level after the BC2 to BC0 counter value has reached 0 before clearing the IRIC flag. (See figure 14.28.)
SDA A Send/receive data A Send/receive data
SCL
9
1
2
3
4
5
6
7
Confirm SCL = 8 low level
9
1
2
3
BC2 to BC0
0
7
6
5
4
3
2
1 Clear IRIC
7
6
5 Clear IRIC when BC2 to BC0 2
IRIC (operation example) IRIC flag may be cleared IRIC flag may be cleared
IRIC flag may not be cleared
Figure 14.28 Timing of IRIC Flag Clearing during Wait Operation 17. Interrupt during Module Stop Mode When the module is stopped in the state that an interrupt is requested, the interrupt source of the CPU or activation source of the DTC* is not cleared. Be sure to enter module stop mode by disabling the interrupt beforehand. Note: * Supported only by the H8S/2268 Group. 18. Assignment and Selection of Register Addresses Some I2C bus interface registers are assigned to the same address as other registers. Register selection is performed by means of the IICE bit in the serial control register X (SCRX). For details on register addresses, see section 24, List of Registers.
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Section 14 I C Bus Interface (IIC) (Supported as an Option by H8S/2264 Group)
2
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Section 15 A/D Converter
Section 15 A/D Converter
This LSI includes a successive approximation type 10-bit A/D converter that allows up to ten analog input channels to be selected. A block diagram of the A/D converter is shown in figure 15.1.
15.1
Features
* 10-bit resolution * Ten input channels * Conversion time: 6.3 s per channel (at 20.5 MHz operation) * Two operating modes Single mode: Single-channel A/D conversion Scan mode: Continuous A/D conversion on 1 to 4 channels * Four data registers Conversion results are held in a 16-bit data register for each channel. * Sample and hold function * Three methods conversion start Software 16-bit timer pulse unit (TPU or TMR) conversion start trigger External trigger signal * Interrupt request An A/D conversion end interrupt request (ADI) can be generated. * Module stop mode can be set * Selectable range of voltages of analog inputs The range of voltages of analog inputs to be converted can be specified using the Vref signal as the analog reference voltage.
ADCMS35B_000020020700
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Section 15 A/D Converter
Module data bus AVcc
Successive approximations register Bus interface ADDRD ADDRC ADDRA ADDRB ADCSR ADCR
Internal data bus
10-bit D/A converter Vref
AN0 + AN1 AN2 AN3 AN4 AN5 AN6 AN7 AN8 AN9
Multiplexer
/2 /4
Comparator Sample-andhold circuit
Control circuit
/8 /16
ADI interrupt signal Conversion start trigger from TPU or 8-bit timer
ADTRG Off while waiting for A/D conversion On during A/D conversion AVSS
Legend: ADCR: ADCSR: ADDRA: ADDRB: ADDRC: ADDRD:
A/D control register A/D control/status register A/D data register A A/D data register B A/D data register C A/D data register D
Figure 15.1 Block Diagram of A/D Converter
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Section 15 A/D Converter
15.2
Input/Output Pins
Table 15.1 summarizes the input pins used by the A/D converter. The eight analog input pins are divided into two groups each of which consists of four channels; analog input pins 0 to 3 (AN0 to AN3) comprising group 0 and analog input pins 4 to 7 (AN4 to AN7) comprising group 1. The AVcc and AVss pins are the power supply pins for the analog block in the A/D converter. The Vref pin is the A/D conversion reference voltage pin. Table 15.1 Pin Configuration
Pin Name Analog power supply pin Analog ground pin Reference voltage pin Analog input pin 0 Analog input pin 1 Analog input pin 2 Analog input pin 3 Analog input pin 4 Analog input pin 5 Analog input pin 6 Analog input pin 7 Analog input pin 8 Analog input pin 9 A/D external trigger input pin Symbol AVcc AVss Vref AN0 AN1 AN2 AN3 AN4 AN5 AN6 AN7 AN8 AN9 ADTRG I/O Input Input Input Input Input Input Input Input Input Input Input Input Input Input External trigger input pin for starting A/D conversion Analog input pins Group 1 analog input pins Function Analog block power supply and reference voltage Analog block ground and reference voltage Reference voltage for A/D conversion Group 0 analog input pins
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Section 15 A/D Converter
15.3
Register Descriptions
The A/D converter has the following registers. For details on the module stop control register, refer to section 22.1.2, Module Stop Control Registers A to D (MSTPCRA to MSTPCRD). * A/D data register A (ADDRA) * A/D data register B (ADDRB) * A/D data register C (ADDRC) * A/D data register D (ADDRD) * A/D control/status register (ADCSR) * A/D control register (ADCR) 15.3.1 A/D Data Registers A to D (ADDRA to ADDRD)
There are four 16-bit read-only ADDR registers; ADDRA to ADDRD, used to store the results of A/D conversion. The ADDR registers, which store a conversion result for each channel, are shown in table 15.2. The converted 10-bit data is stored in bits 6 to 15. The lower 6 bits are always read as 0. The data bus between the CPU and the A/D converter is 8 bits width. The upper byte can be read directly from the CPU, however the lower byte should be read via a temporary register. Therefore, when reading the ADDR, read only the upper byte, or read in word unit. Table 15.2 Analog Input Channels and Corresponding ADDR Registers
Analog Input Channel CH3 = 0 Group 0 (CH2 = 0) AN0 AN1 AN2 AN3 Group 1 (CH2 = 1) AN4 AN5 AN6 AN7 (CH2 = 0) Setting prohibited Setting prohibited Setting prohibited Setting prohibited CH3 = 1 (CH2 = 1) Setting prohibited Setting prohibited AN8 AN9 A/D Data Register to be Stored Results of A/D Conversion ADDRA ADDRB ADDRC ADDRD
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Section 15 A/D Converter
15.3.2
A/D Control/Status Register (ADCSR)
ADCSR controls A/D conversion operations.
Bit 7 Bit Name ADF Initial Value 0 R/W R/(W) *1 Description A/D End Flag A status flag that indicates the end of A/D conversion. [Setting conditions] * * When A/D conversion ends in single mode When A/D conversion ends on all specified channels in scan mode When 0 is written after reading ADF = 1 2 When the DTC* is activated by an ADI interrupt, and the DISEL bit in DTC is 0 with the transfer counter other than 0 6 ADIE 0 R/W A/D Interrupt Enable A/D conversion end interrupt (ADI) request enabled when 1 is set 5 ADST 0 R/W A/D Start Clearing this bit to 0 stops A/D conversion, and the A/D converter enters the wait state. Setting this bit to 1 starts A/D conversion. In single mode, this bit is cleared to 0 automatically when conversion on the specified channel is complete. In scan mode, conversion continues sequentially on the specified channels until this bit is cleared to 0 by software, a reset, or a transition to power-down mode in which the A/D converter is halted, shown in table 22.1. The ADST bit can be set to 1 by software, a timer conversion start trigger, or the A/D external trigger input pin (ADTRG).
[Clearing conditions] * *
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Section 15 A/D Converter Initial Value 0
Bit 4
Bit Name SCAN
R/W R/W
Description Scan Mode Selects single mode or scan mode as the A/D conversion operating mode. Only set the SCAN bit while conversion is stopped (ADST = 0). 0: Single mode 1: Scan mode
3 2 1 0
CH3 CH2 CH1 CH0
0 0 0 0
R/W R/W R/W R/W
Channel Select 0 to 3 Select analog input channels. When SCAN = 0 0000: AN0 0001: AN1 0010: AN2 0011: AN3 0100: AN4 0101: AN5 0110: AN6 0111: AN7 1000: Setting prohibited 1001: Setting prohibited 1010: Setting prohibited 1011: Setting prohibited 1100: Setting prohibited 1101: Setting prohibited 1110: AN8 1111: AN9 When SCAN = 1 0000: AN0 0001: AN0 to AN1 0010: AN0 to AN2 0011: AN0 to AN3 0100: AN4 0101: AN4 to AN5 0110: AN4 to AN6 0111: AN4 to AN7 1000: Setting prohibited 1001: Setting prohibited 1010: Setting prohibited 1011: Setting prohibited 1100: Setting prohibited 1101: Setting prohibited 1110: Setting prohibited 1111: Setting prohibited
Notes: 1. Only 0 can be written to bit 7, to clear this bit. 2. Supported only by the H8S/2268 Group.
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Section 15 A/D Converter
15.3.3
A/D Control Register (ADCR)
The ADCR enables A/D conversion started by an external trigger signal.
Bit 7 6 Bit Name TRGS1 TRGS0 Initial Value 0 0 R/W R/W R/W Description Timer Trigger Select 0 and 1 Enables the start of A/D conversion by a trigger signal. Only set bits TRGS0 and TRGS1 while conversion is stopped (ADST = 0). 00: A/D conversion start by software is enabled 01: A/D conversion start by TPU conversion start trigger is enabled 10: A/D conversion start by 8-bit timer conversion start trigger is enabled 11: A/D conversion start by external trigger pin (ADTRG) is enabled 5, 4 3 2 CKS1 CKS0 All 1 0 0 R/W R/W Reserved These bits are always read as 1 and cannot be modified. Clock Select 0 and 1 These bits specify the A/D conversion time. The conversion time should be changed only when ADST = 0. Specify a setting that gives a value within the range shown in table 26.9 or 26.22 in section 26, Electrical Characteristics. 00: Conversion time = 530 states (max.) 01: Conversion time = 266 states (max.) 10: Conversion time = 134 states (max.) 11: Conversion time = 68 states (max.) 1, 0 All 1 Reserved These bits are always read as 1 and cannot be modified.
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Section 15 A/D Converter
15.4
Interface to Bus Master
ADDRA to ADDRD are 16-bit registers. As the data bus to the bus master is 8 bits wide, the bus master accesses to the upper byte of the registers directly while to the lower byte of the registers via the temporary register (TEMP). Data in ADDR is read in the following way: When the upper-byte data is read, the upper-byte data will be transferred to the CPU and the lower-byte data will be transferred to TEMP. Then, when the lower-byte data is read, the lower-byte data will be transferred to the CPU. When data in ADDR is read, the data should be read from the upper byte and lower byte in the order. When only the upper-byte data is read, the data is guaranteed. However, when only the lower-byte data is read, the data is not guaranteed. Figure 15.2 shows data flow when accessing to ADDR.
Read the upper byte
Bus master (H'AA)
Bus interface
Module data bus
TEMP (H'40)
ADDRnH (H'AA) Read the lower byte
ADDRnL (H'40)
(n = A to D)
Bus master (H'40)
Bus interface
Module data bus
TEMP (H'40)
ADDRnH (H'AA)
ADDRnL (H'40)
(n = A to D)
Figure 15.2 Access to ADDR (When Reading H'AA40)
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Section 15 A/D Converter
15.5
Operation
The A/D converter operates by successive approximation with 10-bit resolution. It has two operating modes; single mode and scan mode. When changing the operating mode or analog input channel, in order to prevent incorrect operation, first clear the bit ADST to 0 in ADCSR. The ADST bit can be set at the same time as the operating mode or analog input channel is changed. 15.5.1 Single Mode
In single mode, A/D conversion is to be performed only once on the specified single channel. The operations are as follows. 1. A/D conversion is started when the ADST bit is set to 1, according to software, timer conversion start trigger, or external trigger input. 2. When A/D conversion is completed, the result is transferred to the corresponding A/D data register to the channel. 3. On completion of conversion, the ADF bit in ADCSR is set to 1. If the ADIE bit is set to 1 at this time, an ADI interrupt request is generated. 4. The ADST bit remains set to 1 during A/D conversion. When A/D conversion ends, the ADST bit is automatically cleared to 0 and the A/D converter enters the wait state.
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Section 15 A/D Converter
Set*
ADIE
A/D conversion start Set* Set*
ADST
Clear* Clear*
ADF State of channel 0 (AN0) State of channel 1 (AN1)
Idle
Idle
A/D conversion 1
A/D conversion 2
Idle
State of channel 2 (AN2) State of channel 3 (AN3) ADDRA ADDRB ADDRC ADDRD
Idle
Idle
Read conversion result* A/D conversion result 1
Read conversion result* A/D conversion result 2
Note: *
Vertical arrows indicate instructions executed by software.
Figure 15.3 Example of A/D Converter Operation (Single Mode, Channel 1 Selected)
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Section 15 A/D Converter
15.5.2
Scan Mode
In scan mode, A/D conversion is to be performed sequentially on the specified channels (four channels maximum). The operations are as follows. 1. When the ADST bit is set to 1 by software, TPU, timer conversion start trigger, or external trigger, input, A/D conversion starts on the first channel in the group (AN0 when CH3 and CH2 = 00, AN4 when CH3 and CH2 = 01, or AN8 when CH3 and CH2 = 10). 2. When A/D conversion for each channel is completed, the result is sequentially transferred to the A/D data register corresponding to each channel. 3. When conversion of all the selected channels is completed, the ADF flag is set to 1. If the ADIE bit is set to 1 at this time, an ADI interrupt is requested after A/D conversion ends. Conversion of the first channel in the group starts again. 4. Steps [2] to [3] are repeated as long as the ADST bit remains set to 1. When the ADST bit is cleared to 0, A/D conversion stops and the A/D converter enters the wait state.
Contimuous A/D conversion Set*1 ADST Clear*1 ADF State of channel 0 (AN0) State of channel 1 (AN1) State of channel 2 (AN2) State of channel 3 (AN3) ADDRA ADDRB ADDRC ADDRD Notes: 1. Vertical arrows indicate instructions executed by software. 2. Data currently being converted is ignored. Idle
A/D conversion 1
Clear*1
A/D conversion time Idle
A/D conversion 2 A/D conversion 4
Idle
A/D conversion 5
Idle Idle
Idle
A/D conversion 3
*2
Idle Idle
Idle
A/D conversion result 1 A/D conversion result 2
A/D conversion result 2
A/D conversion result 3
Figure 15.4 Example of A/D Converter Operation (Scan Mode, Channels AN0 to AN2 Selected)
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Section 15 A/D Converter
15.5.3
Input Sampling and A/D Conversion Time
The A/D converter has a built-in sample-and-hold circuit. The A/D converter samples the analog input when the A/D conversion start delay time (tD) has passed after the ADST bit is set to 1, then starts conversion. Figure 15.5 shows the A/D conversion timing. Table 15.3 shows the A/D conversion time. As indicated in figure 15.5, the A/D conversion time (tCONV) includes tD and the input sampling time (tSPL). The length of tD varies depending on the timing of the write access to ADCSR. The total conversion time therefore varies within the ranges indicated in table 15.3. Specify the conversion time by setting bits CKS0 and CKS1 in ADCR with ADST cleared to 0. Note that the specified conversion time should be longer than the value described in A/D Conversion Characteristics in section 25, Electrical Characteristics. In scan mode, the values given in table 15.3 apply to the first conversion time. The values given in table 15.4 apply to the second and subsequent conversions.
(1) Address (2)
Write signal Input sampling timing
ADF tD tSPL tCONV Legend: (1): ADCSR write cycle (2): ADCSR address tD: A/D conversion start delay tSPL: Input sampling time tCONV: A/D conversion time
Figure 15.5 A/D Conversion Timing
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Section 15 A/D Converter
Table 15.3 A/D Conversion Time (Single Mode)
CKS1 = 0 CKS0 = 0 Item Symbol Min Typ Max 18 33 A/D conversion tD start delay Input sampling tSPL time A/D conversion tCONV time 10 CKS0 = 1 Min Typ Max 63 17 266 6 CKS1 = 1 CKS0 = 0 Min Typ Max 31 9 134 4 67 CKS0 = 1 Min Typ Max 15 5 68
127 530
515
259
131
Note: * All values represent the number of states.
Table 15.4 A/D Conversion Time (Scan Mode)
CKS1 0 1 CKS0 0 1 0 1 Conversion Time (State) 512 (Fixed) 256 (Fixed) 128 (Fixed) 64 (Fixed)
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Section 15 A/D Converter
15.5.4
External Trigger Input Timing
A/D conversion can be externally triggered. When the TRGS0 and TRGS1 bits are set to 11 in ADCR, external trigger input is enabled at the ADTRG pin. A falling edge at the ADTRG pin sets the ADST bit to 1 in ADCSR, starting A/D conversion. Other operations, in both single and scan modes, are the same as when the bit ADST has been set to 1 by software. Figure 15.6 shows the timing.
ADTRG
Internal trigger signal
ADST A/D conversion
Figure 15.6 External Trigger Input Timing
15.6
Interrupt Source
The A/D converter generates an A/D conversion end interrupt (ADI) at the end of A/D conversion. Setting the ADIE bit to 1 enables ADI interrupt requests while the bit ADF in ADCSR is set to 1 after A/D conversion is completed. In the H8S/2268 Group, the DTC* can be activated by an ADI interrupt. Having the converted data read by the DTC* in response to an ADI interrupt enables continuous conversion without imposing a load on software. Table 15.5 A/D Converter Interrupt Source
Name ADI Interrupt Source A/D conversion completed Interrupt Source Flag ADF DTC Activation* Possible
Note: * Supported only by the H8S/2268 Group.
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Section 15 A/D Converter
15.7
A/D Conversion Accuracy Definitions
This LSI's A/D conversion accuracy definitions are given below. * Resolution The number of A/D converter digital output codes * Quantization error The deviation inherent in the A/D converter, given by 1/2 LSB (see figure 15.7). * Offset error The deviation of the analog input voltage value from the ideal A/D conversion characteristic when the digital output changes from the minimum voltage value B'0000000000 (H'000) to B'0000000001 (H'001) (see figure 15.8). * Full-scale error The deviation of the analog input voltage value from the ideal A/D conversion characteristic when the digital output changes from B'1111111110 (H'3FE) to B'1111111111 (H'3FF) (see figure 15.8). * Nonlinearity error The error with respect to the ideal A/D conversion characteristic between zero voltage and fullscale voltage. Does not include offset error, full-scale error, or quantization error (see figure 15.8). * Absolute accuracy The deviation between the digital value and the analog input value. Includes offset error, fullscale error, quantization error, and nonlinearity error.
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Section 15 A/D Converter
Digital output
111 110 101 100 011 010 001 000
Ideal A/D conversion characteristic
Quantization error
1 2 1024 1024
1022 1023 FS 1024 1024 Analog input voltage
Figure 15.7 A/D Conversion Accuracy Definitions (1)
Full-scale error
Digital output
Ideal A/D conversion characteristic
Nonlinearity error Actual A/D conversion characteristic FS Analog input voltage
Offset error
Figure 15.8 A/D Conversion Accuracy Definitions (2)
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Section 15 A/D Converter
15.8
15.8.1
Usage Notes
Module Stop Mode Setting
Operation of the A/D converter can be disabled or enabled using the module stop control register. The initial setting is for operation of the A/D converter to be halted. Register access is enabled by clearing module stop mode. For details, refer to section 22, Power-Down Modes. 15.8.2 Permissible Signal Source Impedance
This LSI's analog input is designed such that conversion accuracy is guaranteed for an input signal for which the signal source impedance is 5 k or less. This specification is provided to enable the A/D converter's sample-and-hold circuit input capacitance to be charged within the sampling time; if the sensor output impedance exceeds 5 k, charging may be insufficient and it may not be possible to guarantee A/D conversion accuracy. However, for A/D conversion in single mode with a large capacitance provided externally, the input load will essentially comprise only the internal input resistance of 10 k, and the signal source impedance is ignored. However, as a low-pass filter effect is obtained in this case, it may not be possible to follow an analog signal with a large differential coefficient (e.g., 5 mV/s or greater) (see figure 15.9). When converting a high-speed analog signal, a low-impedance buffer should be inserted. 15.8.3 Influences on Absolute Accuracy
Adding capacitance results in coupling with GND, and therefore noise in GND may adversely affect absolute accuracy. Be sure to make the connection to an electrically stable GND such as AVss. Care is also required to insure that filter circuits do not communicate with digital signals on the mounting board (i.e., acting as antennas).
This LSI Sensor output impedance to 5 k Sensor input Low-pass filter C to 0.1 mF
Cin = 15 pF
A/D converter equivalent circuit 10 k
20 pF
Figure 15.9 Example of Analog Input Circuit
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Section 15 A/D Converter
15.8.4
Range of Analog Power Supply and Other Pin Settings
If the conditions below are not met, the reliability of the device may be adversely affected. * Analog input voltage range The voltage applied to analog input pin ANn during A/D conversion should be in the range AVss ANn AVcc. * Relationship between AVcc, AVss and Vcc, Vss Set AVss = Vss as the relationship between AVcc, AVss and Vcc, Vss. If the A/D converter is not used, the AVcc and AVss pins must not be left open. * Vref range The reference voltage input from the Vref pin should be set to AVcc or less. 15.8.5 Notes on Board Design
In board design, digital circuitry and analog circuitry should be as mutually isolated as possible, and layout in which digital circuit signal lines and analog circuit signal lines cross or are in close proximity should be avoided as far as possible. Failure to do so may result in incorrect operation of the analog circuitry due to inductance, adversely affecting A/D conversion values. Also, digital circuitry must be isolated from the analog input signals (AN0 to AN9), and analog power supply (AVcc) by the analog ground (AVss). Also, the analog ground (AVss) should be connected at one point to a stable digital ground (Vss) on the board. 15.8.6 Notes on Noise Countermeasures
A protection circuit should be connected in order to prevent damage due to abnormal voltage, such as an excessive surge at the analog input pins (AN0 to AN9), between AVcc and AVss, as shown in figure 15.10. Also, the bypass capacitors connected to AVcc and the filter capacitor connected to AN0 to AN9 must be connected to AVss. If a filter capacitor is connected, the input currents at the analog input pins (AN0 to AN9) are averaged, and so an error may arise. Also, when A/D conversion is performed frequently, as in scan mode, if the current charged and discharged by the capacitance of the sample-and-hold circuit in the A/D converter exceeds the current input via the input impedance (Rin), an error will arise in the analog input pin voltage. Careful consideration is therefore required when deciding circuit constants.
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Section 15 A/D Converter
AVCC Vref Rin*2 *1 *1 0.1 F 100 AN0 to AN9 AVSS
Notes: Values are reference values. 1. 10 F 0.01 F
2. Rin: Input impedance
Figure 15.10 Example of Analog Input Protection Circuit Table 15.6 Analog Pin Specifications
Item Analog input capacitance Permissible signal source impedance Min Max 20 5 Unit pF k
10 k AN0 to AN9 To A/D converter 20 pF
Note: Values are reference values.
Figure 15.11 Analog Input Pin Equivalent Circuit
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Section 15 A/D Converter
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Section 16 D/A Converter
Section 16 D/A Converter
The H8S/2268 Group includes a D/A converter, while the H8S/2264 Group does not.
16.1
Features
* 8-bit resolution * Two output channels * Conversion time: 10 s, maximum (when load capacitance is 20 pF) * Output voltage: 0 V to Vref * Module stop mode can be set
Vref AVCC
DADR0 DADR1
DA1 DA0 AVSS
8-bit D/A
Control circuit Legend: DACR: D/A control register DADR0: D/A data register 0 DADR1: D/A data register 1
Figure 16.1 Block Diagram of D/A Converter
DAC0004B_000020020700
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DACR
Internal data bus
Module data bus
Bus interface
Section 16 D/A Converter
16.2
Input/Output Pins
Table 16.1 shows the pin configuration for the D/A converter. Table 16.1 Pin Configuration
Pin Name Analog power supply pin Analog ground pin Analog output pin 0 Analog output pin 1 Reference voltage pin Symbol AVCC AVSS DA0 DA1 Vref I/O Input Input Output Output Input Function Analog block power supply Analog block ground and reference voltage Channel 0 analog output pin Channel 1 analog output pin Reference voltage for analog block
16.3
Register Description
The D/A converter has the following registers. For details on the module stop control register, refer to section 22.1.2, Module Stop Control Registers A to D (MSTPCRA to MSTPCRD). * D/A data register 0 (DADR0) * D/A data register 1 (DADR1) * D/A control register (DACR) 16.3.1 D/A Data Registers 0 and 1 (DADR0 and DADR1)
DADR0 and DADR1 are 8-bit readable/writable registers that store data for D/A conversion. When analog output is permitted, D/A data register contents are converted and output to analog output pins.
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Section 16 D/A Converter
16.3.2
D/A Control Register (DACR)
DACR controls D/A converter operation.
Bit 7 Bit Name DAOE1 Initial Value 0 R/W R/W Description D/A Output Enable 1 Controls D/A conversion and analog output 0: Analog output DA1 is disabled 1: D/A conversion for channel 1 and analog output DA1 are enabled 6 DAOE0 0 R/W D/A Output Enable 0 Controls D/A conversion and analog output 0: Analog output DA0 is disabled 1: D/A conversion for channel 0 and analog output DA0 are enabled 5 DAE 0 R/W D/A Enable Controls D/A conversion in conjunction with the DAOE0 and DAOE1 bits. When the DAE bit is cleared to 0, D/A conversion for channels 0 and 1 are controlled individually. When DAE is set to 1, D/A conversion for channels 0 and 1 are controlled as one. Conversion result output is controlled by the DAOE0 and DAOE1 bits. For details, see table 16.2. 4 to 0 All 1 Reserved These bits are always read as 1 and cannot be modified.
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Section 16 D/A Converter
Table 16.2 D/A Conversion Control
Bit 5 DAE 0 Bit 7 DAOE1 0 1 1 0 1 Bit 6 DAOE0 0 1 0 1 0 1 0 1 Description Disables D/A Conversion Enables D/A Conversion for channel 0 Enables D/A Conversion for channel 1 Enables D/A Conversion for channels 0 and 1 Disables D/A Conversion Enables D/A Conversion for channels 0 and 1
16.4
Operation
Two channels of the D/A converter can perform conversion individually. When the DAOE bit in DACR is set to 1, D/A conversion is enabled and the conversion results are output. An example of D/A conversion of channel 0 is shown below. The operation timing is shown in figure 16.2. 1. Write conversion data to DADR0. 2. When the DAOE0 bit in DACR is set to 1, D/A conversion starts. After the interval of tDCONV, the conversion results are output from the analog output pin DA0. The conversion results are output continuously until DADR0 is modified or DAOE0 bit is cleared to 0. The output value is calculated by the following formula: (DADR contents)/256 x Vref 3. Conversion starts immediately after DADR0 is modified. After the interval of tDCONV, conversion results are output. 4. When the DAOE bit is cleared to 0, analog output is disabled.
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Section 16 D/A Converter
DADR0 write cycle
DACR write cycle
DADR0 write cycle
DACR write cycle
ADRES
DADR0
Conversion data (1)
Conversion data (2)
DAOE0 Conversion result (2)
DA0 High impedance state tDCONV
Conversion result (1) tDCONV
Legend: tDCONV: D/A conversion time
Figure 16.2 D/A Converter Operation Example
16.5
16.5.1
Usage Notes
Analog Power Supply Current in Power-Down Mode
If this LSI enters a power-down mode such as software standby, watch, sub-active, sub-sleep, and module stop modes while D/A conversion is enabled, the D/A cannot retain analog outputs within the given D/A absolute accuracy although it retains digital values. The analog power supply current is approximately the same as that during D/A conversion. To reduce analog power supply current in power-down mode, clear the DAOE0, DAOE1 and DAE bits to 0 to disable D/A outputs before entering the mode. 16.5.2 Setting for Module Stop Mode
It is possible to enable/disable the D/A converter operation using the module stop control register, the D/A converter does not operate by the initial value of the register. The register can be accessed by releasing the module stop mode. For more details, see section 22, Power-Down Modes.
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Section 16 D/A Converter
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Section 17 LCD Controller/Driver
Section 17 LCD Controller/Driver
The H8S/2268 has an on-chip segment type LCD control circuit, LCD driver, and power supply circuit, enabling it to directly drive an LCD panel.
17.1
Features
Features of the LCD controller/driver are given below. * Display capacity
Duty Cycle Static 1/2 1/3 1/4 Internal Driver 40 SEG 40 SEG 40 SEG 40 SEG
* LCD RAM capacity 8 bits x 20 bytes (160 bits) Byte or word access to LCD RAM * The segment output pins can be used as ports. H8S/2268 Group: SEG40 to SEG1 pins can be used as ports in groups of eight. H8S/2264 Group: SEG24 to SEG1 pins can be used as ports in groups of eight. * Common output pins not used because of the duty cycle can be used for common doublebuffering (parallel connection). With 1/2 duty, parallel connection of COM1 to COM2, and of COM3 to COM4, can be used In static mode, parallel connection of COM1 to COM2, COM3, and COM4 can be used * Choice of 11 frame frequencies * A or B waveform selectable by software * Built-in power supply split-resistance * Display possible in operating modes other than standby mode and module stop mode * Display possible during low-voltage operation by built-in triple step-up voltage circuit (supposrted only by the H8S/2268 Group) * Module stop mode As the initial setting, LCD operation is halted. Access to registers and LCD RAM is enabled by clearing module stop mode.
LCDSG00B_000020030700
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Section 17 LCD Controller/Driver
Figure 17.1 shows a block diagram of the LCD controller/driver.
VCC LCD drive power supply (Built-in step-up voltage circuit*1) V1 V2 V3 VSS COM1 COM4 SEG40 SEG39 SEG38 SEG37 SEG36 40-bit shift register Segment driver
M /16 to /2048*2 SUB to SUB/4 CL2
Common data latch
Common driver
Internal data bus
LPCR LCR LCR2 Display timing generator CL1
LCD RAM 20 bytes SEG1 SEGn, DO Legend: LPCR: LCD port control register LCR: LCD control register LCR2: LCD control register 2 Notes: 1. Supported only by the H8S/2268 Group. 2. The clock oscillator stops operating in subactive, subsleep, and watch mode. Therefore, be sure to select a frequency between SUB and SUB/4.
Figure 17.1 Block Diagram of LCD Controller/Driver
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Section 17 LCD Controller/Driver
17.2
Input/Output Pins
Table 17.1 shows the LCD controller/driver pin configuration. Table 17.1 Pin Configuration
Name Segment output pins Abbreviation SEG40 to SEG1 I/O Output Function LCD segment drive pins (H8S/2268 Group) All pins are multiplexed as port pins (setting programmable) (H8S/2264 Group) SEG24 to SEG1 pins are multiplexed as port pins (setting programmable) Common output pins LCD power supply pins COM4 to COM1 Output LCD common drive pins Pins can be used in parallel with static or 1/2 duty V1, V2, V3 Used when a bypass capacitor is connected externally, and when an external power supply circuit is used V3 pin is LCD input reference power supply when triple step-up voltage circuit is used*. Capacitance pins for LCD step-up voltage* C1, C2 Capacitance pins for step-up voltage LCD drive power supply
Note: * Supported only by the H8S/2268 Group.
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Section 17 LCD Controller/Driver
17.3
Register Descriptions
The LCD controller/driver has the following registers. * LCD port control register (LPCR) * LCD control register (LCR) * LCD control register 2 (LCR2) * LCDRAM 17.3.1 LCD Port Control Register (LPCR)
LPCR selects the duty cycle, LCD driver, and pin functions.
Bit 7 6 5 Bit Name DTS1 DTS0 CMX Initial Value 0 0 0 R/W R/W R/W R/W Description Duty Cycle Select 1 and 0 Common Function Select The combination of DTS1 and DTS0 selects static, 1/2, 1/3, or 1/4 duty. CMX specifies whether or not the same waveform is to be output from multiple pins to increase the common drive power when not all common pins are used because of the duty setting. 4 0 Reserved This bit is always read as 0 and should only be written with 0. 3 2 1 0 SGS3 SGS2 SGS1 SGS0 0 0 0 0 R/W R/W R/W R/W Segment Driver Select 3 to 0 Bits 3 to 0 select the segment drivers to be used. For details, see tables 17.3 and 17.4.
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Section 17 LCD Controller/Driver
Table 17.2 Duty Cycle and Common Function Selection
Bit 7: DTS1 0 Bit 6: DTS0 0 Bit 5: CMX 0 1 1 0 1 1/2 duty Duty Cycle Static Common Drivers COM1 COM4 to COM1 COM2 to COM1 COM4 to COM1 Notes COM4, COM3, and COM2 can be used as ports (Initial value) COM4, COM3, and COM2 output the same waveform as COM1 COM4 and COM3 can be used as ports COM4 outputs the same waveform as COM3, and COM2 outputs the same waveform as COM1 COM4 can be used as a port* Do not use COM4
1
0 1
0 1 X
1/3 duty 1/4 duty
COM3 to COM1 COM4 to COM1 COM4 to COM1
Legend: X: Don't care Notes: COM4 to COM1 function as ports when the setting of SGS3 to SGS0 is 0000. * Cannot be used as a port when the SUPS bit in LCR2 is 1 in the H8S/2268 Group. Set the SUPS bit to 0 when using as a port.
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Section 17 LCD Controller/Driver
Table 17.3 Segment Driver Selection (1) (H8S/2268 Group)
Function of Pins SEG40 to SEG1 Bit 3: Bit 2: Bit 1: Bit 0: SEG40 to SGS3 SGS2 SGS1 SGS0 SEG33 0 0 0 1 1 0 1 1 X X 0 1 0 1 0 1 X X Port SEG SEG SEG SEG SEG Setting prohibited Setting prohibited SEG32 to SEG25 Port Port SEG SEG SEG SEG Setting prohibited Setting prohibited SEG24 to SEG17 Port Port Port SEG SEG SEG Setting prohibited Setting prohibited SEG16 to SEG9 Port Port Port Port SEG SEG Setting prohibited Setting prohibited SEG8 to SEG1 Port Port Port Port Port SEG Setting prohibited Setting prohibited
Legend: X: Don't care Note: COM4 to COM1 also function as ports when the setting of SGS3 to SGS0 is 0000.
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Section 17 LCD Controller/Driver
Table 17.4 Segment Driver Selection (2) (H8S/2264 Group)
Function of Pins SEG40 to SEG1 Bit 3: SGS3 0 Bit 2: SGS2 0 Bit 1: SGS1 0 Bit 0: SGS0 0 1 1 1 0 1 1 X X 0 1 0 1 X X SEG40 to SEG25 Setting prohibited SEG SEG SEG SEG Setting prohibited Setting prohibited SEG24 to SEG17 Port Setting prohibited Port SEG SEG SEG Setting prohibited Setting prohibited SEG16 to SEG9 Port Setting prohibited Port Port SEG SEG Setting prohibited Setting prohibited SEG8 to SEG1 Port Setting prohibited Port Port Port SEG Setting prohibited Setting prohibited
Legend: X: Don't care Note: COM4 to COM1 also function as ports when the setting of SGS3 to SGS0 is 0000.
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Section 17 LCD Controller/Driver
17.3.2
LCD Control Register (LCR)
LCR performs LCD power supply split-resistance connection control and display data control, and selects the frame frequency.
Bit 7 Bit Name Initial Value 1 R/W R/W Description LCD Disable Bit This bit is always read as 1. The write value should always be 0. 6 PSW 0 R/W LCD Power Supply Split-Resistance Connection Control Bit 6 can be used to disconnect the LCD power supply split-resistance from VCC when LCD display is not required in a power-down mode, or when an external power supply is used. When the ACT bit is cleared to 0, and also in standby mode, the LCD power supply splitresistance is disconnected from VCC regardless of the setting of this bit. 0: LCD power supply split-resistance is disconnected from VCC 1: LCD power supply split-resistance is connected to VCC 5 ACT 0 R/W Display Function Activate Bit 5 specifies whether or not the LCD controller/driver is used. Clearing this bit to 0 halts operation of the LCD controller/driver. The LCD drive power supply ladder resistance is also turned off, regardless of the setting of the PSW bit. However, register contents are retained. 0: LCD controller/driver operation halted 1: LCD controller/driver operation enabled 4 DISP 0 R/W Display Data Control Bit 4 specifies whether the LCD RAM contents are displayed or blank data is displayed regardless of the LCD RAM contents. 0: Blank data is displayed 1: LCD RAM data is displayed
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Section 17 LCD Controller/Driver Initial Value 0 0 0 0
Bit 3 2 1 0
Bit Name CKS3 CKS2 CKS1 CKS0
R/W R/W R/W R/W R/W
Description Frame Frequency Select 3 to 0 Bits 3 to 0 select the operating clock and the frame frequency. In subactive mode, watch mode, and subsleep mode, the system clock () is halted, and therefore display operations are not performed if one of the clocks from /16 to /2048 is selected. If LCD display is required in these modes, SUB, SUB/2, or SUB/4 must be selected as the operating clock. For details, see table 17.5.
Note: 0 should be written to bit 7 after the other bits have been set.
Table 17.5 Frame Frequency Selection
Bit 3: CKS3 0 Bit 2: CKS2 X Bit 1: CKS1 0 1 1 0 0 1 1 0 1 Bit 0: CKS0 0 1 X 0 1 0 1 0 1 0 1
1 Frame Frequency*
Operating Clock SUB SUB/2 SUB/4 /16 /32 /64 /128 /256 /512 /1024 /2048
= 20 MHz
2 128 Hz*
= 2 MHz 128 Hz* 2 64 Hz* 32 Hz*
2 2
64 Hz* 2 32 Hz*
2
610 Hz 305 Hz 152.6 Hz 76.3 Hz 38.1 Hz
488 Hz 244 Hz 122 Hz 61 Hz 30.5 Hz
Legend: X: Don't care Notes: 1. When 1/3 duty is selected, the frame frequency is 4/3 times the value shown. 2. This is the frame frequency when SUB = 32.768 kHz.
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Section 17 LCD Controller/Driver
17.3.3
LCD Control Register 2 (LCR2)
LCR2 controls switching between the A waveform and B waveform, selects clock for step-up voltage circuit, selects power supply, and selects the duty ratio for charge/discharge pulse that controls to separate power supply divider resistance from power supply circuit.
Bit 7 Bit Name LCDAB Initial Value 0 R/W R/W Description A Waveform/B Waveform Switching Control Bit 7 specifies whether the A waveform or B waveform is used as the LCD drive waveform. 0: Drive using A waveform 1: Drive using B waveform 6 5 HCKS 1 0 R/W Reserved These bits are always read as 1 and cannot be modified. (H8S/2268 Group) Triple Step-Up Voltage Circuit Clock Select This bit selects a clock used for triple step-up voltage circuit. This bit selects a clock which divides a clock specified by the LCD operating control register (LCR) by 4 or 8 as step-up voltage circuit clock. 0: A clock, which divides a LCD operating clock by 4, is selected as step-up voltage circuit clock 1: A clock, which divides a LCD operating clock by 8, is selected as step-up voltage circuit clock (H8S/2264 Group) Reserved 0 should be written to this bit.
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Section 17 LCD Controller/Driver Initial Value 0
Bit 4
Bit Name SUPS
R/W R/W
Description (H8S/2268 Group) Drive Power Select Triple Step-up Voltage Circuit Control The triple step-up voltage circuit stops operation when Vcc is selected as drive power. The triple step-up voltage circuit starts operation when LCD input reference voltage (VLCD3) is selected as drive power. 0: Drive power is Vcc, triple step-up voltage circuit halts 1: Drive power is triple step-up voltage of the LCD input reference voltage (VLCD3), triple step-up voltage circuit operates (H8S/2264 Group) Reserved 0 should be written to this bit.
3 2 1 0
CDS3 CDS2 CDS1 CDS0
0 0 0 0
R/W R/W R/W R/W
Selection of Duty Ratio for Charge/Discharge Pulse Duty ratio is selected during the power supply divider resistance is connected to power supply circuit. When the duty ratio of 0 is selected, the power supply divider resistance is fixed to the state that the resistance is separated from the power supply circuit. Therefore, supply the power to pins V1, V2, and V3 from the external circuit. The charge/discharge pulses have the waveform shown in figure 17.2. The duty ratio is represented by TC/TW . 0000: duty ratio = 1 (stack at high) 0001: duty ratio = 1/8 0010: duty ratio = 2/8 0011: duty ratio = 3/8 0100: duty ratio = 4/8 0101: duty ratio = 5/8 0110: duty ratio = 6/8 0111: duty ratio = 0 (stack at low) 10XX: duty ratio = 1/16 11XX: duty ratio = 1/32
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Section 17 LCD Controller/Driver
Figure 17.2 shows the waveform of the charge/discharge pulses. The duty cycle is Tc/Tw.
1 frame Tw
COM1
Tc Charge/discharge pulses
Tdc Legend: Tc: Power supply split-resistance connected Tdc: Power supply split-resistance disconnected
Figure 17.2 A Waveform 1/2 Duty 1/2 Vias
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Section 17 LCD Controller/Driver
The relationships between the LCD operating clock and step-up voltage clock, and between bits CKS3 to CKS0 in LCD control register (LCR) and bit HCKS in LCD control register 2 (LCR2) are shown below.
LCR Bit 3
CKS3
LCR2
Bit 2
CKS2
Bit 1
CKS1
Bit 0 CKS0 0
Bit 5 HCKS*
LCD clock SUB
Step-Up Voltage Step-up Frame frequency Circuit clock Voltage frequency* Circuit * clock = 20 MHz = 2 MHz = 20 MHz = 2 MHz SUB/4 SUB/8 128 Hz 8192 Hz 4096 Hz 64 Hz SUB/16 2048 Hz 32 Hz SUB/32 1024 Hz 488 Hz 256 244 Hz 512 122 Hz 610 Hz 1024 61 Hz 39.1 kHz 19.5 kHz 305 Hz 2048 30.5 Hz 9.77 kHz 152.6 Hz 4096 4.88 kHz 76.3 Hz 8192 2.44 kHz 38.1 Hz 16384 1.22 kHz 977 kHz 1.95 kHz 3.91 kHz 7.81 kHz 31.3 kHz 15.6 kHz
0
X
0
0 1
0
X
0
1
0 1
SUB/2
0
X
1
X
0 1
SUB/4
1
0
0
0
0 1
/16
64 128
1
0
0
1
0 1
/32
1
0
1
0 1
0
/64
1
0
1
1
0 1
/128
1
1
0
0
0 1
/256
1
1
0
1
0 1
/512
1
1
1
0
0 1
/1024
1
1
1
1
0 1
/2048
Legend: X: Don't care Note: * Supported only by the H8S/2268 Group.
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Section 17 LCD Controller/Driver
17.4
17.4.1
Operation
Settings up to LCD Display
To perform LCD display, the hardware and software related items described below must first be determined. 1. Hardware Settings A. Using 1/2 duty When 1/2 duty is used, interconnect pins V2 and V3 as shown in figure 17.3.
VCC V1 V2 V3 VSS
Figure 17.3 Handling of LCD Drive Power Supply when Using 1/2 Duty B. Large-panel display As the impedance of the built-in power supply split-resistance is large, it may not be suitable for driving a large panel. If the display lacks sharpness when using a large panel, refer to section 17.4.6, Boosting the LCD Drive Power Supply. When static or 1/2 duty is selected, the common output drive capability can be increased. Set CMX to 1 when selecting the duty cycle. In this mode, with a static duty cycle pins COM4 to COM1 output the same waveform, and with 1/2 duty the COM1 waveform is output from pins COM2 and COM1, and the COM2 waveform is output from pins COM4 and COM3. C. LCD drive power supply setting With the H8S/2268 and 2264, there are two ways of providing LCD power: by using the on-chip power supply circuit, or by using an external power supply circuit. When an external power supply circuit is used for the LCD drive power supply, connect the external power supply to the V1 pin.
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Section 17 LCD Controller/Driver
2. Software Settings A. Duty selection Any of four duty cyclesstatic, 1/2 duty, 1/3 duty, or 1/4 dutycan be selected with bits DTS1 and DTS0. B. Segment selection The segment drivers to be used can be selected with bits SGS3 to SGS0. 3. Frame frequency selection The frame frequency can be selected by setting bits CKS3 to CKS0. The frame frequency should be selected in accordance with the LCD panel specification. For the clock selection method in watch mode, subactive mode, and subsleep mode, see section 17.4.4, Operation in Power-Down Modes. A. A or B waveform selection Either the A or B waveform can be selected as the LCD waveform to be used by means of LCDAB. B. LCD drive power supply selection When an external power supply circuit is used, turn the LCD drive power supply off with the PSW bit. 17.4.2 Relationship between LCD RAM and Display
The relationship between the LCD RAM and the display segments differs according to the duty cycle. LCD RAM maps for the different duty cycles are shown in figures 17.4 to 17.7. After setting the registers required for display, data is written to the part corresponding to the duty using the same kind of instruction as for ordinary RAM, and display is started automatically when turned on. Word- or byte-access instructions can be used for RAM setting.
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Section 17 LCD Controller/Driver
Bit 7 H'FC40 SEG2
Bit 6 SEG2
Bit 5 SEG2
Bit 4 SEG2
Bit 3 SEG1
Bit 2 SEG1
Bit 1 SEG1
Bit 0 SEG1
H'FC53
SEG40 COM4
SEG40 COM3
SEG40 COM2
SEG40 COM1
SEG39 COM4
SEG39 COM3
SEG39 COM2
SEG39 COM1
Figure 17.4 LCD RAM Map (1/4 Duty)
Bit 7 H'FC40 Bit 6 SEG2 Bit 5 SEG2 Bit 4 SEG2 Bit 3 Bit 2 SEG1 Bit 1 SEG1 Bit 0 SEG1
H'FC53
SEG40 COM3
SEG40 COM2
SEG40 COM1
SEG39 COM3
SEG39 COM2
SEG39 COM1
Space not used for display
Figure 17.5 LCD RAM Map (1/3 Duty)
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Section 17 LCD Controller/Driver
Bit 7 H'FC40 SEG4
Bit 6 SEG4
Bit 5 SEG3
Bit 4 SEG3
Bit 3 SEG2
Bit 2 SEG2
Bit 1 SEG1
Bit 0 SEG1
Display space
H'FC49
SEG40
SEG40
SEG39
SEG39
SEG38
SEG38
SEG37
SEG37
Space not used for display H'FC53 COM2 COM1 COM2 COM1 COM2 COM1 COM2 COM1
Figure 17.6 LCD RAM Map (1/2 Duty)
Bit 7 H'FC40 SEG8 Bit 6 SEG7 Bit 5 SEG6 Bit 4 SEG5 Bit 3 SEG4 Bit 2 SEG3 Bit 1 SEG2 Bit 0 SEG1 Display space H'FC44 SEG40 SEG39 SEG38 SEG37 SEG36 SEG35 SEG34 SEG33
Space not used for display
H'FC53 COM1 COM1 COM1 COM1 COM1 COM1 COM1 COM1
Figure 17.7 LCD RAM Map (Static Mode)
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Section 17 LCD Controller/Driver
1 frame M M
1 frame
Data V1 V2 V3 VSS V1 V2 V3 VSS V1 V2 V3 VSS V1 V2 V3 VSS V1 V2 V3 VSS (a) Waveform with 1/4 duty
Data V1 V2 V3 VSS V1 V2 V3 VSS V1 V2 V3 VSS
COM1
COM1
COM2
COM2
COM3
COM3
COM4
SEGn
SEGn
V1 V2 V3 VSS (b) Waveform with 1/3 duty
1 frame
1 frame
M
M
Data V1 V2,V3 VSS V1 V2,V3 VSS V1 V2,V3 VSS (c) Waveform with 1/2 duty
Data V1 COM1 VSS V1 SEGn VSS
COM1
COM2
SEGn
(d) Waveform with static output
Figure 17.8 Output Waveforms for Each Duty Cycle (A Waveform)
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Section 17 LCD Controller/Driver
1 frame M Data
1 frame
1 frame
1 frame M Data V1 V2 V3 VSS V1 V2 V3 VSS V1 V2 V3 VSS V1 V2 V3 VSS V1 V2 V3 VSS
1 frame
1 frame
1 frame
1 frame
COM1
COM1
V1 V2 V3 VSS V1 V2 V3 VSS V1 V2 V3 VSS
COM2
COM2
COM3
COM3
COM4
SEGn
SEGn
V1 V2 V3 VSS (b) Waveform with 1/3 duty
(a) Waveform with 1/4 duty
1 frame
1 frame
1 frame
1 frame
1 frame
1 frame
1 frame
1 frame
M
M
Data V1 V2,V3 VSS V1 V2,V3 VSS V1 V2,V3 VSS (c) Waveform with 1/2 duty
Data V1 COM1 VSS V1 SEGn VSS
COM1
COM2
SEGn
(d) Waveform with static output
Figure 17.9 Output Waveforms for Each Duty Cycle (B Waveform)
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Section 17 LCD Controller/Driver
Table 17.6 Output Levels
Data M Static 1/2 duty 1/3 duty 1/4 duty Common output Segment output Common output Segment output Common output Segment output Common output Segment output 0 0 V1 V1 V2, V3 V1 V3 V2 V3 V2 0 1 VSS VSS V2, V3 VSS V2 V3 V2 V3 1 0 V1 VSS V1 VSS V1 VSS V1 VSS 1 1 VSS V1 VSS V1 VSS V1 VSS V1
17.4.3
Triple Step-Up Voltage Circuit (Supported Only by the H8S/2268 Group)
The H8S/2268 Group incorporates a triple step-up voltage circuit. Triple voltage of liquid crystal input reference voltage (VLCD3) input from V3 pin can be used for the LCD driver. Before enabling the step-up voltage circuit, duty cycle (1/3 duty or 1/4 duty), LCD driver or I/O pin function, and display data and frame frequency should be selected. Around 0.1-F capacitor should be connected between C1 and C2, and voltage specified in section 25.2.6, LCD Characteristics should be applied to V3 pin. After above settings, by selecting the step-up voltage circuit clock in LCD control register 2 (LCR2) and setting SUPS to 1, the triple step-up voltage circuit operates, voltage double of VLCD3 is generated for V2 pin, and voltage triple of VLCD3 is generated for V1pin. Notes: 1. The triple step-up voltage circuit should only be used as LCD drive power of the H8S/2268 Group. To drive large panel, power supply capacitance may be insufficient. In this case, Vcc should be used as power supply or external power supply circuit should be used. 2. When the triple step-up voltage circuit is used, do not specify static or 1/2 duty as duty cycle. 3. Do not use capacitance with polarity such as electrolytic capacitor as capacitance to be connected between C1 and C2.
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Section 17 LCD Controller/Driver
C1 C2 V1
C
C V2 C V3 C
Note: C: 0.1 F (typ.) (0.05 to 0.2 F)
Figure 17.10 Connection when Triple Step-Up Voltage Circuit Used (Supported Only by the H8S/2268 Group) 17.4.4 Operation in Power-Down Modes
In the H8S/2268 and 2264, the LCD controller/driver can be operated even in the power-down modes. The operating state of the LCD controller/driver in the power-down modes is summarized in table 17.7. In subactive mode, watch mode, and subsleep mode, the system clock oscillator stops, and therefore, unless SUB, SUB/2, or SUB/4 has been selected by bits CKS3 to CKS0, the clock will not be supplied and display will halt. Since there is a possibility that a direct current will be applied to the LCD panel in this case, it is essential to ensure that SUB, SUB/2, or SUB/4 is selected. In the software standby mode the segment output and common output pins switch to I/O port status. In this case if a port's DDR or PCR bit is set to 1, a DC voltage could be applied to the LCD panel. Therefore, DDR and PCR must never be set to 1 for ports being used for segment output or common output.
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Section 17 LCD Controller/Driver
Table 17.7 Power-Down Modes and Display Operation
Software Hardware Module Mode Clock w Display ACT = 0 operation ACT = 1 Reset Runs Runs Stops Stops Active Runs Runs Stops Sleep Runs Runs Stops Watch Stops Runs Stops Subactive Subsleep Stops Runs Stops Stops Runs Stops Standby Stops Stops* Stops
1
standby Stops Stops Stops *2
Stop Stops*4 Stops* Stops Stops
4
*2
3 3 3 2 Functions Functions Functions* Functions* Functions* Stops*
2 Stops*
Notes: 1. The subclock oscillator does not stop, but clock supply is halted. 2. The LCD drive power supply is turned off regardless of the setting of the PSW bit. 3. Display operation is performed only if SUB, SUB/2, or SUB/4 is selected as the operating clock. 4. The clock supplied to the LCD stops.
17.4.5
Low-Power LCD Drive
The simplest way to achieve low-power operation for an LCD power supply circuit is to use an internal division resistor. However, since the values of the internal resistors are fixed, a constant current continually flows from Vcc to Vss of the internal resistor. Since the quantity of the current is independent of the dissipation current of an LCD panel, power is wasted in using a low-power LCD. This LSI incorporates a function that eliminates wastage of power. By using this function, a power supply circuit that is most suitable for the power of a given LCD panel can be obtained. * Principle As shown in figure 17.11, external capacitors are connected to V1, V2, and V3 of the LCD power supply terminals. The capacitors connected to V1, V2, and V3 are repeatedly charged and discharged to retain required voltage levels in the cycles shown in figure 17.11. In this case, the charged voltages are equivalent to V1, V2, and V3, respectively. (In 1/3 bias operation, for example, the V2 voltage is two thirds of the V1 voltage and the V3 voltage is one third of the V1 voltage.) Power is supplied to the LCD panel by the electric charges that are accumulated in these capacitors. The capacitances of the capacitors and the charge-discharge period are determined by the quantity of power which the LCD panel requires. The charge-discharge period can be determined by software.
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Section 17 LCD Controller/Driver
* Example of Operation (1/3 bias operation) During charging period Tc in figure 17.11, the voltages that are divided by the internal division resistors are applied to the V1, V2, and V3 terminals (the V2 voltage is two thirds of the V1 voltage and the V3 voltage is one third of the V1 voltage), and these voltages charge external capacitors C1, C2, and C3. Even during this period, the LCD panel is being driven. In the subsequent discharge period Tdc, the charge operation stops. The LCD panel is now driven by discharge of the charges accumulated in the respective capacitors. At this point in time, the respective voltages fall slightly as the capacitors are discharged. Attention must be paid so that the operation of the LCD panel is not affected, by selecting the proper charging period and the capacitance of the capacitors. The capacitors connected to the V1, V2, and V3 terminals are repeatedly charged and discharged in the cycles shown in figure 17.11 and retain required voltages, keeping the LCD panel in operation. The capacitance of the capacitors and a charge-discharge period is determined by the quantity of power in which the LCD panel requires. In addition, the charge-discharge period can be selected by CDS3 to 0. In actuality, the capacitance of the capacitors and the charge-discharge period must be determined through experiment, on the basis of the power dissipation specifications of the LCD panel. This method, however, permits the most proper current value to be selected, compared with a case in which a DC current continually flows in the internal resistors.
Charging period Tc V1 potential V1 V2 potential V2 C2 V3 C3 C1 V3 potential V1 x 2/3 Discharging period Tdc
Voltage drop Vd1 associated with discharging due to LCD panel driving Vd2
V1 x 1/3
Vd3
Power supply voltage fluctuation in 1/3 bias system
Figure 17.11 Example of Low-Power-Consumption LCD Drive Operation
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Section 17 LCD Controller/Driver
17.4.6
Boosting the LCD Drive Power Supply
When a large panel is driven, the on-chip power supply capacity may be insufficient. In this case, the power supply impedance must be reduced. This can be done by connecting bypass capacitors of around 0.1 to 0.3 F to pins V1 to V3, as shown in figure 17.12, or by adding a split-resistance externally.
VCC V1
VR
R This LSI V2 R V3 R VSS
R = several k to several M
C = 0.1 to 0.3 F
Figure 17.12 Connection of External Split-Resistance
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Section 18 DTMF Generation Circuit
Section 18 DTMF Generation Circuit
The H8S/2268 Group contains a Dual-Tone Multi-Frequency generation circuit to generate DTMF signals. It is not contained in the H8S/2264 Group. The DTMF signal consists of two types of sine waveforms and is used to access a switch device. The function of the DTMF signal is shown in the frequency matrix in figure 18.1. The DTMF generation circuit produces the frequencies corresponding to the numbers and symbols in the figure.
1 2 3 A R1 (697 Hz)
4
5
6
B
R2 (770 Hz)
7
8
9
C
R3 (852 Hz)
*
0
#
D
R4 (941 Hz)
C1 (1,209 Hz)
C2 (1,336 Hz)
C3 (1,477 Hz)
Figure 18.1 DTMF Frequencies
18.1
Features
* Generating DTMF frequency sine waveform from the system clock () The system clock (2.0 to 20.4 MHz, with 400-kHz steps) is divided to produce a 400-kHz clock signal. This clock signal is then supplied to the feedback loop, comprised of a variant program divider and sine waveform counter to generate a DTMF frequency sine waveform. * Producing low distortion, stable sine waveforms Sine waveforms signals are output from the high-precision resistor rudder-type D/A converter. In addition, one cycle is divided into 32, resulting in low-distortion stable signal waveforms. * Synthesis or single waveform output selectable Synthesized row and column output, row output, or column output are selectable. * Module stop mode can be set. Figure 18.2 shows the block diagram for the DTMF generation circuit.
DTMF000B_000020020700
C4 (1,633 Hz)
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Section 18 DTMF Generation Circuit
DTLR (2.0 to 20.4 MHz, with 400-kHz steps)
400 kHz Clock counter
Row Sine waveform counterD/A TONED Variant program divider
Internal data bus
Feed back
AVCC
DTCR
Column Sine waveform counter D/A Feedback Variant progam divider
Legend: DTLR: DTMF Load Register DTCR: DTMF Control Register
Figure 18.2 DTMF Generation Circuit Diagram
18.2
Input/Output Pins
Table 18.1 shows the pin configuration of the DTMF generation circuit. Table 18.1 Pin Configuration
Name Analog power supply pin DTMF signal output Abbreviation AVcc TONED Input/Output Input Output Function Power supply of analog section DTMF signal output pin
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Section 18 DTMF Generation Circuit
18.3
Register Descriptions
The DTMF generation circuit contains the following resisters: * DTMF control register (DTCR) * DTMF load register (DTLR) 18.3.1 DTMF Control Register (DTCR)
The DTCR controls the DTMF generation circuit operation, column and row outputs, and selects the output frequency.
Bit 7 Bit Name DTEN Initial Value 0 R/W R/W Description This bit controls DTMF generation 0: Halts the DTMF generation circuit. 1: Operates DTMF generation circuit. 6 5 -- CLOE 1 0 -- R/W Reserved This bit is always read as 1 and cannot be modified. This bit controls Column section outputs 0: Inhibits DTMF signal output on Column section (hiimpedance) 1: Enables DTMF signal output on Column section. 4 RWOE 0 R/W This bit controls Column section outputs 0: Inhibits DTMF signal output on Row section (hiimpedance) 1: Enables DTMF signal output on Row section. 3 2 CLF1 CLF0 0 0 R/W R/W DTMF signal output frequency on Column section 1 and 0 Selects Column DTMF signal frequency from C1 to C4. 00: Column DTMF signal output frequency: 1209 Hz (C1) 01: Column DTMF signal output frequency: 1336 Hz (C2) 10: Column DTMF signal output frequency: 1447 Hz (C3) 11: Column DTMF signal output frequency: 1633 Hz (C4) 1 0 RWF1 RWF0 0 0 R/W R/W DTMF signal output frequency on Row section: 1, 0 Selects Column DTMF signal frequency from R1 to R4. 00: Row DTMF signal output frequency: 697 Hz (R1) 01: Row DTMF signal output frequency: 770 Hz (R2) 10: Row DTMF signal output frequency: 852 Hz (R3) 11: Row DTMF signal output frequency: 941 Hz (R4) Rev. 4.00 Mar 21, 2006 page 493 of 654 REJ09B0071-0400
Section 18 DTMF Generation Circuit
18.3.2
DTMF Load Register (DTLR)
The DTLR sets the system clock division ratio for the DTMF generation circuit.
Bit 7, 6 5 4 3 2 1 0 Bit Name -- DTL5 DTL4 DTL3 DTL2 DTL1 DTL0 Initial Value All 1 0 0 0 0 0 0 R/W -- R/W R/W R/W R/W R/W R/W Description Reserved These bits are always read as 1 and cannot be modified. Main clock division ratio 5 to 0 These bits set the system clock division ratio to produce 400-kHz clock signals to be supplied to the DTMF generation circuit. The division ratio determines the counter value of 6b'000101 to 6b'110011(D'5 to D'51) according to the range 2.0 to 20.4 MHz. 000000: Setting prohibited 000001: Setting prohibited 000010: Setting prohibited 000011: Setting prohibited 000100: Setting prohibited 000101: Division ratio (5) main clock frequency (2.0 MHz) 000110: Division ratio (6) main clock frequency (2.4 MHz) 000111: Division ratio (7) main clock frequency (2.8 MHz) : : 110001: Division ratio (49) main clock frequency (19.6 MHz) 110010: Division ratio (50) main clock frequency (20.0 MHz) 110011: Division ratio (51) main clock frequency (20.4 MHz) 110100: Setting prohibited : : 111111: Setting prohibited Note: The correct values should be set in DTL0 to DTL5. If these bit settings do not match the system clock, correct DTMF signal output frequency cannot be obtained. Additionally, correct operation is not guaranteed if the DTL0 to DTL5 settings are other than 5 to 51 (division ratio 5 to 51).
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Section 18 DTMF Generation Circuit
18.4
18.4.1
Operation
Output Waveform
The DTMF generation circuit provides synthesized row and column groups output waveforms or sine waveforms (DTCR signal) of row or column group from TONED pin. These signals are produced in the high-precision resistor rudder-type D/A converter. The output frequency is set in DTCR. Figure 18.3 shows the TONED pin output equivalent circuit. Figure 18.4 shows a single output waveform of column or row group alone. One cycle of the output waveform is divided into 32, resulting in low-distortion stable signal waveforms.
control
AVCC Output control AVSS
Row TONED Column
Figure 18.3 TONED Pin Output Equivalent Circuit
AVCC
1 2 3 4 5 6 7 8 9 10111213141516171819202122232425 26272829 303132
AVSS Time slot
Figure 18.4 TONED Pin Output Waveform (Row or Column Group Alone) Table 18.2 shows DTMF generation circuit output signal and typical signal frequencies, and frequency deviation between the two.
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Section 18 DTMF Generation Circuit
Table 18.2 Frequency Deviation between DTMF Output Signals and Typical Signals
Symbol R1 R2 R3 R4 C1 C2 C3 C4 Typical Signal (Hz) 697 770 852 941 1209 1336 1477 1633 DTMF Signal Output (Hz) 694.44 769.23 851.06 938.97 1212.12 1333.33 1481.48 1639.34 Frequency Deviation (%) -0.37 -0.10 -0.11 -0.22 0.26 -0.20 0.30 0.39
18.4.2
Operation Flow
The operating procedure for the DTMF generation circuit is as follows: 1. Set the system clock division ratio for the DTLR based on the frequency of the connected system clock. (2.0 to 20.4 MHz, with 400-kHz steps) 2. Set the frequencies of the Row (R1 to R4) and Column (C1 to C4) sections based on CLF0, CLF1, RWF0 and RWF1 of the DTCR. 3. Select the outputs of the Row and Column based on CLOE and RWOE of the DTCR, and set DTEN to 1 to operate the DTMF generation circuit. With the above setting, the set DTMF signal is output from the TONED pin.
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Section 18 DTMF Generation Circuit
18.5
Application Circuit Example
An application example of the DTMF generation circuit is shown in figure 18.5.
24 k TONED 2 k HA16808ANT 20 100 k 360 k Pxx 2SC458 +0.47 F 11 19 DTMF
LSI
AVCC
Vref1
MUTE
Note: The numeric values on the right end of the signal lines indicate the HA16808ANT pin numbers.
Figure 18.5 Example of HA16808ANT Connection
18.6
Usage Notes
1. Setting the module stop mode It is possible to enable/disable the DTMF operation using the module stop control register. The DTMF does not operate by the initial value of the register. The register can be accessed by releasing the module stop mode. For more details, see section 22, Power-Down Modes. 2. DTLR setting and system clock When using the DTMF generation circuit, note the following: The DTLR must be set so as to accommodate the system clock. If the DTLR setting does not match the system clock, correct DTMF signal output frequency cannot be obtained. 3. Relationship between AVcc, AVss and Vcc, Vss Set AVss = Vss as the relationship between AVcc, AVss and Vcc, Vss. If the DTMF generation circuit is not used, the AVcc and AVss pins must not be left open. Note: If the conditions above are not met, the reliability of the device may be adversely affected.
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Section 18 DTMF Generation Circuit
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Section 19 RAM
Section 19 RAM
The H8S/2268 Group and the H8S/2264 Group have on-chip high-speed static RAM. The RAM is connected to the CPU by a 16-bit data bus, enabling one-state access by the CPU to both byte data and word data.
Product Classification Flash memory version H8S/2268F H8S/2266F H8S/2265F Masked ROM version H8S/2264 H8S/2262 RAM Size 16 kbytes 8 kbytes 4 kbytes 4 kbytes 2 kbytes RAM Address H'FFB000 to H'FFEFBF, H'FFFFC0 to H'FFFFFF H'FFD000 to H'FFEFBF, H'FFFFC0 to H'FFFFFF H'FFE000 to H'FFEFBF, H'FFFFC0 to H'FFFFFF H'FFE000 to H'FFEFBF, H'FFFFC0 to H'FFFFFF H'FFE800 to H'FFEFBF, H'FFFFC0 to H'FFFFFF
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Section 19 RAM
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Section 20 ROM
Section 20 ROM
The features of the flash memory are summarized below. The block diagram of the flash memory is shown in figure 20.1.
20.1
* Size
Features
ROM Size 256 kbytes 128 kbytes 128 kbytes ROM Address H'000000 to H'03FFFF H'000000 to H'01FFFF H'000000 to H'01FFFF
Product Type H8S/2268F H8S/2266F H8S/2265F
* Programming/erase methods The flash memory is programmed 128 bytes at a time. Erase is performed in single-block units. The flash memory of the H8S/2268 is configured as follows: 64 kbytes x 3 blocks, 32 kbytes x 1 block, and 4 kbytes x 8 blocks. The flash memory of the H8S/2266 and H8S/2265 is configured as follows: 64 kbytes x 1 block, 32 kbytes x 1 block, and 4 kbytes x 8 blocks. To erase the entire flash memory, each block must be erased in turn. * Reprogramming capability The flash memory can be reprogrammed for 100 times. * Two programming modes Boot mode User program mode On-board programming/erasing can be done in boot mode, in which the boot program built into the chip is started to erase or program of the entire flash memory. In normal user program mode, individual blocks can be erased or programmed. * Automatic bit rate adjustment For data transfer in boot mode, this LSI's bit rate can be automatically adjusted to match the transfer bit rate of the host. * Programming/erasing protection There are three protect modes, hardware, software, and error protect, which allow protected status to be designated for flash memory program/erase operations.
ROMF253B_000020030700
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Section 20 ROM
* Programmer mode Flash memory can be programmed/erased in programmer mode using a PROM programmer, as well as in on-board programming mode. * Emulation function for flash memory in RAM The real-time emulation for programming of flash memory is possible by overlapping the flash memory to a part of RAM.
Internal address bus
Internal data bus (16 bits)
Module bus
FLMCR1 FLMCR2 EBR1 EBR2 RAMER FLPWCR Bus interface/controller Operating mode FWE pin Mode pin
Flash memory
Legend: FLMCR1: FLMCR2: EBR1: EBR2: RAMER: FLPWCR:
Flash memory control register 1 Flash memory control register 2 Erase block register 1 Erase block register 2 RAM emulation register Flash memory power control register
Figure 20.1 Block Diagram of Flash Memory
20.2
Mode Transitions
When the mode pins and the FWE pin are set in the reset state and a reset-start is executed, this LSI enters an operating mode as shown in figure 20.2. In user mode, flash memory can be read but not programmed or erased. The boot, user program and programmer modes are provided as modes to write and erase the flash memory.
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Section 20 ROM
The differences between boot mode and user program mode are shown in table 20.1. Figure 20.3 shows the operation flow for boot mode and figure 20.4 shows that for user program mode.
MD1 = 1, MD2 = 1, FWE = 0*1 RES = 0
Reset state
User mode
MD1 = 1, MD2 = 1, FWE = 1 RES = 0 MD1 = 0 MD2 = 1, FWE = 1 RES = 0
RES = 0 *2
FWE = 1
FWE = 0
Programmer mode
User program mode
*1
Boot mode On-board programming mode
Notes: Only make a transition between user mode and user program mode when the CPU is not accessing the flash memory. 1. RAM emulation possible 2. MD1 = 0, MD2 = 0, P14 = 0, P16 = 0, P70 = 1
Figure 20.2 Flash Memory State Transitions Table 20.1 Differences between Boot Mode and User Program Mode
Boot Mode Total erase Block erase Programming control program* Yes No Program/program-verify User Program Mode Yes Yes Program/program-verify/erase/ erase-verify/emulation
Note: * To be provided by the user, in accordance with the recommended algorithm.
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Section 20 ROM
1. Initial state The old program version or data remains written in the flash memory. The user should prepare the programming control program and new application program beforehand in the host.
2. Programming control program transfer When boot mode is entered, the boot program in this LSI (originally incorporated in the chip) is started and the programming control program in the host is transferred to RAM via SCI communication. The boot program required for flash memory erasing is automatically transferred to the RAM boot program area.
Host
Host Programming control program New application program
New application program
This LSI
Boot program Flash memory RAM SCI
This LSI
Boot program Flash memory RAM Boot program area SCI
Application program (old version)
Application program (old version)
Programming control program
3. Flash memory initialization The erase program in the boot program area (in RAM) is executed, and the flash memory is initialized (to H'FF). In boot mode, total flash memory erasure is performed, without regard to blocks.
Host
4. Writing new application program The programming control program transferred from the host to RAM is executed, and the new application program in the host is written into the flash memory.
Host
New application program
This LSI
Boot program Flash memory RAM Boot program area Flash memory preprogramming erase
Programming control program
This LSI
SCI Boot program Flash memory RAM Boot program area New application program
Programming control program
SCI
Program execution state
Figure 20.3 Boot Mode
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Section 20 ROM
1. Initial state The FWE assessment program that confirms that user program mode has been entered, and the program that will transfer the programming/erase control program from flash memory to on-chip RAM should be written into the flash memory by the user beforehand. The programming/erase control program should be prepared in the host or in the flash memory.
Host Programming/ erase control program New application program
2. Programming/erase control program transfer When user program mode is entered, user software confirms this fact, executes transfer program in the flash memory, and transfers the programming/erase control program to RAM.
Host
New application program
This LSI
Boot program Flash memory
FWE assessment program
This LSI
SCI RAM Boot program Flash memory
FWE assessment program
SCI RAM
Transfer program
Transfer program
Programming/ erase control program
Application program (old version)
Application program (old version)
3. Flash memory initialization The programming/erase program in RAM is executed, and the flash memory is initialized (to H'FF). Erasing can be performed in block units, but not in byte units.
Host
4. Writing new application program Next, the new application program in the host is written into the erased flash memory blocks. Do not write to unerased blocks.
Host
New application program
This LSI
Boot program Flash memory
FWE assessment program
This LSI
SCI RAM Boot program Flash memory
FWE assessment program Transfer program Programming/ erase control program Programming/ erase control program
SCI RAM
Transfer program
Flash memory erase
New application program
Program execution state
Figure 20.4 User Program Mode (Example)
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Section 20 ROM
20.3
Block Configuration
Figure 20.5 shows the block configuration of 256-kbyte flash memory of the H8S/2268. Figure 20.6 shows the block configuration of 128-kbyte flash memory of the H8S/2266 and H8S/2265. The thick lines indicate erasing units, the narrow lines indicate programming units, and the values are addresses. The flash memory of the H8S/2268 is divided into 4 kbytes (8 blocks), 32 kbytes (1 block), and 64 kbytes (3 blocks). The flash memory of the H8S/2266 and H8S/2265 is divided into 4 kbytes (8 blocks), 32 kbytes (1 block), and 64 kbytes (1 block). Erasing is performed in these units. Programming is performed in 128-byte units starting from an address with lower eight bits H'00 or H'80.
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Section 20 ROM
EB0 Erase unit 4 kbytes EB1 Erase unit 4 kbytes EB2 Erase unit 4 kbytes EB3 Erase unit 4 kbytes EB4 Erase unit 4 kbytes EB5 Erase unit 4 kbytes EB6 Erase unit 4 kbytes EB7 Erase unit 4 kbytes EB8 Erase unit 32 kbytes EB9 Erase unit 64 kbytes EB10 Erase unit 64 kbytes EB11 Erase unit 64 kbytes
H'000000
H'000001
H'000002
Programming unit: 128 bytes
H'00007F H'000FFF
H'001000
H'001001
H'001002
Programming unit: 128 bytes
H'00107F H'001FFF
H'002000
H'002001
H'002002
Programming unit: 128 bytes
H'00207F
H'002FFF H'003000 H'003001 H'003002 Programming unit: 128 bytes H'00307F H'003FFF H'004000 H'004001 H'004002 Programming unit: 128 bytes H'00407F H'004FFF H'005000 H'005001 H'005002 Programming unit: 128 bytes H'00507F H'005FFF H'006000 H'006001 H'006002 Programming unit: 128 bytes H'00607F H'006FFF H'007000 H'007001 H'007002 Programming unit: 128 bytes H'00707F
H'007FFF H'008000 H'008001 H'008002 Programming unit: 128 bytes H'00807F H'00FFFF H'010000 H'010001 H'010002 Programming unit: 128 bytes H'01007F
H'01FFFF H'020000 H'020001 H'020002 Programming unit: 128 bytes H'02007F H'02FFFF H'030000 H'030001 H'030002 Programming unit: 128 bytes H'03007F H'03FFFF
Figure 20.5 Flash Memory Block Configuration (H8S/2268)
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EB0 Erase unit 4 kbytes EB1 Erase unit 4 kbytes EB2 Erase unit 4 kbytes EB3 Erase unit 4 kbytes EB4 Erase unit 4 kbytes EB5 Erase unit 4 kbytes EB6 Erase unit 4 kbytes EB7 Erase unit 4 kbytes EB8 Erase unit 32 kbytes EB9 Erase unit 64 kbytes
H'000000
H'000001
H'000002
Programming unit: 128 bytes
H'00007F H'000FFF
H'001000
H'001001
H'001002
Programming unit: 128 bytes
H'00107F H'001FFF
H'002000
H'002001
H'002002
Programming unit: 128 bytes
H'00207F
H'002FFF H'003000 H'003001 H'003002 Programming unit: 128 bytes H'00307F H'003FFF H'004000 H'004001 H'004002 Programming unit: 128 bytes H'00407F H'004FFF H'005000 H'005001 H'005002 Programming unit: 128 bytes H'00507F H'005FFF H'006000 H'006001 H'006002 Programming unit: 128 bytes H'00607F H'006FFF H'007000 H'007001 H'007002 Programming unit: 128 bytes H'00707F
H'007FFF H'008000 H'008001 H'008002 Programming unit: 128 bytes H'00807F H'00FFFF H'010000 H'010001 H'010002 Programming unit: 128 bytes H'01007F
H'01FFFF
Figure 20.6 Flash Memory Block Configuration (H8S/2266 and H8S/2265)
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Section 20 ROM
20.4
Input/Output Pins
The flash memory is controlled by means of the pins shown in table 20.2. Table 20.2 Pin Configuration
Pin Name RES FWE MD2 MD1 P70 P16 P14 TxD0 RxD0 I/O Input Input Input Input Input Input Input Output Input Function Reset Flash program/erase protection by hardware Sets this LSI's operating mode Sets this LSI's operating mode Sets MCU operating mode in programmer mode Sets MCU operating mode in programmer mode Sets MCU operating mode in programmer mode Serial transmit data output Serial receive data input
20.5
Register Descriptions
The flash memory has the following registers. * Flash memory control register 1 (FLMCR1) * Flash memory control register 2 (FLMCR2) * Erase block register 1 (EBR1) * Erase block register 2 (EBR2) * RAM emulation register (RAMER) * Flash memory power control register (FLPWCR) * Serial control register X (SCRX) The registers described above are not present in the masked ROM version. If a register described above is read in the masked ROM version, an undefined value will be returned.
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Section 20 ROM
20.5.1
Flash Memory Control Register 1 (FLMCR1)
FLMCR1 is a register that makes the flash memory change to program mode, program-verify mode, erase mode, or erase-verify mode. For details on register setting, refer to section 20.8, Flash Memory Programming/Erasing.
Bit 7 Bit Name FWE Initial Value R/W R Description Flash Write Enable Bit Reflects the input level at the FWE pin. It is cleared to 0 when a low level is input to the FWE pin, and set to 1 when a high level is input. When this bit is cleared to 0, the flash memory changes to hardware protect mode. 6 SWE1 0 R/W Software Write Enable Bit When this bit is set to 1, flash memory programming/erasing is enabled. When this bit is cleared to 0, bits 5 to 0 in FLMCR1 register and all EBR1 and EBR2 bits cannot be set. [Setting condition] When FWE = 1. 5 ESU1 0 R/W Erase Setup Bit When this bit is set to 1, the flash memory changes to the erase setup state. When it is cleared to 0, the erase setup state is cancelled. Set this bit to 1 before setting the E1 bit in FLMCR1. [Setting condition] When FWE = 1 and SWE1 = 1 4 PSU1 0 R/W Program Setup Bit When this bit is set to 1, the flash memory changes to the program setup state. When it is cleared to 0, the program setup state is cancelled. Set this bit to 1 before setting the P1 bit in FLMCR1. [Setting condition] When FWE = 1 and SWE1 = 1 3 EV1 0 R/W Erase-Verify When this bit is set to 1, the flash memory changes to erase-verify mode. When it is cleared to 0, erase-verify mode is cancelled. [Setting condition] When FWE = 1 and SWE1 = 1
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Section 20 ROM Initial Value 0
Bit 2
Bit Name PV1
R/W R/W
Description Program-Verify When this bit is set to 1, the flash memory changes to program-verify mode. When it is cleared to 0, programverify mode is cancelled. [Setting condition] When FWE = 1 and SWE1 = 1
1
E1
0
R/W
Erase When this bit is set to 1, and while the SWE1 and ESU1 bits are 1, the flash memory changes to erase mode. When it is cleared to 0, erase mode is cancelled. [Setting condition] When FWE = 1, SWE1 = 1, and ESU1 = 1
0
P1
0
R/W
Program When this bit is set to 1, and while the SWE1 and PSU1 bits are 1, the flash memory changes to program mode. When it is cleared to 0, program mode is cancelled. When FWE = 1, SWE1 = 1, and PSU1 = 1
20.5.2
Flash Memory Control Register 2 (FLMCR2)
FLMCR2 is a register that displays the state of flash memory programming/erasing. FLMCR2 is a read-only register, and should not be written to.
Bit 7 Bit Name FLER Initial Value 0 R/W R Description Indicates that an error has occurred during an operation on flash memory (programming or erasing). When FLER is set to 1, flash memory goes to the error-protection state. See section 20.9.3, Error Protection, for details. 6 to 0 All 0 R Reserved These bits are always read as 0.
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Section 20 ROM
20.5.3
Erase Block Register 1 (EBR1)
EBR1 specifies the flash memory erase area block. EBR1 is initialized to H'00 when the SWE1 bit in FLMCR1 is 0. Do not set more than one bit at a time, as this will cause all the bits in EBR1 and EBR2 to be automatically cleared to 0.
Bit 7 6 5 4 3 2 1 0 Bit Name EB7 EB6 EB5 EB4 EB3 EB2 EB1 EB0 Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description When this bit is set to 1, 4 kbytes of EB7 (H'007000 to H'007FFF) will be erased. When this bit is set to 1, 4 kbytes of EB6 (H'006000 to H'006FFF) will be erased. When this bit is set to 1, 4 kbytes of EB5 (H'005000 to H'005FFF) will be erased. When this bit is set to 1, 4 kbytes of EB4 (H'004000 to H'004FFF) will be erased. When this bit is set to 1, 4 kbytes of EB3 (H'003000 to H'003FFF) will be erased. When this bit is set to 1, 4 kbytes of EB2 (H'002000 to H'002FFF) will be erased. When this bit is set to 1, 4 kbytes of EB1 (H'001000 to H'001FFF) will be erased. When this bit is set to 1, 4 kbytes of EB0 (H'000000 to H'000FFF) will be erased.
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Section 20 ROM
20.5.4
Erase Block Register 2 (EBR2)
EBR2 specifies the flash memory erase area block. EBR2 is initialized to H'00 when the SWE1 bit in FLMCR1 is 0. Do not set more than one bit at a time, as this will cause all the bits in EBR1 and EBR2 to be automatically cleared to 0.
Bit 7 to 4 Bit Name Initial Value All 0 R/W R/W Description Reserved These bits are always read as 0. Only 0 should be written to these bits. 3 2 1 0 EB11* EB10* EB9 EB8 0 0 0 0 R/W R/W R/W R/W When this bit is set to 1, 64 kbytes of EB11 (H'030000 to H'03FFFF) will be erased. When this bit is set to 1, 64 kbytes of EB10 (H'020000 to H'02FFFF) will be erased. When this bit is set to 1, 64 kbytes of EB9 (H'010000 to H'01FFFF) will be erased. When this bit is set to 1, 32 kbytes of EB8 (H'008000 to H'00FFFF) will be erased.
Note: * These bits are reserved bits in the H8S/2266 and H8S/2265. Only 0 should be written to these bits.
20.5.5
RAM Emulation Register (RAMER)
RAMER specifies the area of flash memory to be overlapped with part of RAM when emulating real-time flash memory programming. RAMER settings should be made in user mode or user program mode. To ensure correct operation of the emulation function, the ROM for which RAM emulation is performed should not be accessed immediately after this register has been modified. Normal execution of an access immediately after register modification is not guaranteed.
Bit 7 to 5 4 Bit Name Initial Value All 0 0 R/W R R/W Description Reserved These bits are always read as 0. Reserved Only 0 should be written to this bit.
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Section 20 ROM Initial Value 0
Bit 3
Bit Name RAMS
R/W R/W
Description RAM Select Specifies selection or non-selection of flash memory emulation in RAM. When RAMS = 1, the flash memory is overlapped with part of RAM, and all flash memory block are program/erase-protected.
2 1 0
RAM2 RAM1 RAM0
0 0 0
R/W R/W R/W
Flash Memory Area Selection When the RAMS bit is set to 1, one of the following flash memory areas is selected to overlap the RAM area. The areas correspond with 4-kbyte erase blocks. 000: H'000000 to H'000FFF (EB0) 001: H'001000 to H'001FFF (EB1) 010: H'002000 to H'002FFF (EB2) 011: H'003000 to H'003FFF (EB3) 100: H'004000 to H'004FFF (EB4) 101: H'005000 to H'005FFF (EB5) 110: H'006000 to H'006FFF (EB6) 111: H'007000 to H'007FFF (EB7)
20.5.6
Flash Memory Power Control Register (FLPWCR)
FLPWCR enables/disables transition to power-down modes for the flash memory when this LSI enters sub-active mode.
Bit 7 Bit Name PDWND Initial Value 0 R/W R/W Description Power Down Disable Enables/disables transition to power-down modes for the flash memory when this LSI enters sub-active mode. 0: Transition to power-down modes for the flash memory enabled. 1: Transition to power-down modes for the flash memory disabled. 6 to 0 All 0 R Reserved These bits are always read as 0.
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20.5.7
Serial Control Register X (SCRX)
SCRX performs register access control.
Bit 7 6 5 4 Bit Name IICX1 IICX0 IICE Initial Value 0 0 0 0 R/W R/W R/W R/W R/W Description Reserved Only 0 should be written to this bit. I C Transfer Select 1, 0 For details, see section 14.3.5, Serial Control Register X (SCRX). I C Master Enable For details, see section 14.3.5, Serial Control Register X (SCRX). 3 FLSHE 0 R/W Flash Memory Control Register Enable Controls for the CPU accessing to the control registers (FLMCR1, FLMCR2, EBR1, EBR2) of the flash memory. When this bit is set to 1, the flash memory control registers can be read/written to. When this bit is cleared to 0, the flash memory control registers are not selected. At this time, the contents of the flash memory control registers are retained. 0: Area at H'FFFFA8 to H'FFFFAC not selected for the flash memory control registers. 1: Area at H'FFFFA8 to H'FFFFAC selected for the flash memory control registers. 2 to 0 All 0 R/W Reserved Only 0 should be written to these bits.
2 2
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Section 20 ROM
20.6
On-Board Programming Modes
When pins are set to on-board programming mode, program/erase/verify operations can be performed on the on-chip flash memory. There are two on-board programming modes: boot mode and user program mode. The pin settings for transition to each of these modes are shown in table 20.3. For a diagram of the transitions to the various flash memory modes, see figure 20.2. Table 20.3 Setting On-Board Programming Modes
FWE 1 1 0 MD2 1 1 1 MD1 0 1 1 Mode Setting Boot Mode User program mode User mode
20.6.1
Boot Mode
Table 20.4 shows the boot mode operations between reset end and branching to the programming control program. 1. When boot mode is used, the flash memory programming control program must be prepared in the host beforehand. Prepare a programming control program in accordance with the description in section 20.8, Flash Memory Programming/Erasing. In boot mode, if any data has been programmed into the flash memory (if all data is not 1), all flash memory blocks are erased. Boot mode is for use when user program mode is unavailable, such as the first time on-board programming is performed, or if the program activated in user program mode is accidentally erased. 2. SCI_0 should be set to asynchronous mode, and the transfer format as follows: 8-bit data, 1 stop bit, and no parity. 3. When the boot program is initiated, the chip measures the low-level period of asynchronous SCI communication data (H'00) transmitted continuously from the host. The chip then calculates the bit rate of transmission from the host, and adjusts the SCI_0 bit rate to match that of the host. The reset should end with the RxD pin high. The RxD and TxD pins should be pulled up on the board if necessary. After the reset is complete, it takes approximately 100 states before the chip is ready to measure the low-level period. 4. After matching the bit rates, the chip transmits one H'00 byte to the host to indicate the completion of bit rate adjustment. The host should confirm that this adjustment end indication (H'00) has been received normally, and transmit one H'55 byte to the chip. If reception could not be performed normally, initiate boot mode again by a reset. Depending on the host's transfer bit rate and system clock frequency of this LSI, there will be a discrepancy between
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Section 20 ROM
the bit rates of the host and the chip. To operate the SCI properly, set the host's transfer bit rate and system clock frequency of this LSI within the ranges listed in table 20.5. 5. In boot mode, a part of the on-chip RAM area is used by the boot program. The area H'FFC000 to H'FFDFFF is the area to which the programming control program is transferred from the host. In the H8S/2266 and H8S/2265, the RAM in this area is enabled only in boot mode. The boot program area cannot be used until the execution state in boot mode switches to the programming control program. 6. Before branching to the programming control program, the chip terminates transfer operations by SCI_0 (by clearing the RE and TE bits in SCR to 0), however the adjusted bit rate value remains set in BRR. Therefore, the programming control program can still use it for transfer of write data or verify data with the host. The TxD pin is high. The contents of the CPU general registers are undefined immediately after branching to the programming control program. These registers must be initialized at the beginning of the programming control program, as the stack pointer (SP), in particular, is used implicitly in subroutine calls, etc. 7. Boot mode can be cleared by driving the reset pin low, waiting at least 20 states, then setting the FWE pin and mode pins, and executing reset release*. Boot mode is also cleared when a WDT overflow occurs. 8. All interrupts are disabled during programming or erasing of the flash memory. Note: * The input signals on the FWE and mode pins must satisfy the mode programming setup time (tMDS = 200 ns) at the reset release timing.
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Section 20 ROM
Table 20.4 Boot Mode Operation
Host Operation Processing Contents LSI Operation Processing Contents Branches to boot program at reset-start. Boot program initiation Bit rate adjustment Continuously transmits data H'00 at specified bit rate. H'00, H'00 ...... H'00 * Measures low-level period of receive data H'00. * Calculates bit rate and sets it in BRR of SCI_0. * Transmits data H'00 to host as adjustment end indication. H'00 H'55 H'AA Receives data H'AA. Transfer of programming control program Transmits number of bytes (N) of programming control program to be transferred as 2-byte data (low-order byte following high-order byte) Transmits 1-byte of programming control program (repeated for N times) Flash memory erase Boot program erase error Receives data H'AA. H'FF High-order byte and low-order byte Echobacks the 2-byte data received. Echoback H'XX Echoback Echobacks received data to host and also transfers it to RAM (repeated for N times) Transmits data H'AA to host when data H'55 is received.
Item Boot mode start
Communications Contents
Transmits data H'55 when data H'00 is received error-free.
H'AA
Checks flash memory data, erases all flash memory blocks in case of written data existing, and transmits data H'AA to host. (If erase could not be done, transmits data H'FF to host and aborts operation.) Branches to programming control program transferred to on-chip RAM and starts execution.
Table 20.5 System Clock Frequencies for which Automatic Adjustment of LSI Bit Rate Is Possible
Host Bit Rate 19,200 bps 9,600 bps 4,800 bps System Clock Frequency Range of this LSI 8 to 20.5 MHz 4 to 20.5 MHz 2 to 20.5 MHz
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Section 20 ROM
20.6.2
Programming/Erasing in User Program Mode
On-board programming/erasing of an individual flash memory block can also be performed in user program mode by branching to a user program/erase control program. The user must prepare onboard means for controlling FWE, on-board means of supplying programming data, and branching conditions. The flash memory must contain the user program/erase control program or a program that provides the user program/erase control program from external memory. As the flash memory itself cannot be read during programming/erasing, transfer the user program/erase control program to on-chip RAM, as in boot mode. Figure 20.7 shows a sample procedure for programming/erasing in user program mode. Prepare a user program/erase control program in accordance with the description in section 20.8, Flash Memory Programming/Erasing.
Reset-start
No Program/erase? Yes Transfer user program/erase control program to RAM Branch to flash memory application program
Branch to user program/erase control program in RAM
Execute user program/erase control program (flash memory rewrite)
Branch to flash memory application program
Figure 20.7 Programming/Erasing Flowchart Example in User Program Mode
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Section 20 ROM
20.7
Flash Memory Emulation in RAM
A setting in the RAM emulation register (RAMER) enables part of RAM to be overlapped onto the flash memory area so that data to be written to flash memory can be emulated in RAM in real time. Emulation can be performed in user mode or user program mode. Figure 20.8 shows an example of emulation of real-time flash memory programming. 1. Set RAMER to overlap part of RAM onto the area for which real-time programming is required. 2. Emulation is performed using the overlapping RAM. 3. After the program data has been confirmed, the RAMS bit is cleared, thus releasing the RAM overlap. 4. The data written in the overlapping RAM is written into the flash memory space.
Start of emulation program
Set RAMER
Write tuning data to overlap RAM
Execute application program No
Tuning OK? Yes Clear RAMER
Write to flash memory emulation block
End of emulation program
Figure 20.8 Flowchart for Flash Memory Emulation in RAM
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Section 20 ROM
An example in which flash memory block area EB0 is overlapped is shown in figure 20.9. 1. The RAM area to be overlapped is fixed at a 4-kbyte area in the range H'FFD000 to H'FFDFFF. In the H8S/2265, the RAM in this area is enabled only in RAM emulation mode. 2. The flash memory area to be overlapped is selected by RAMER from a 4-kbyte area of the EB0 to EB7 blocks. 3. The overlapped RAM area can be accessed from both the flash memory addresses and RAM addresses. 4. When the RAMS bit in RAMER is set to 1, program/erase protection is enabled for all flash memory blocks (emulation protection). In this state, setting the P1 or E1 bit in FLMCR1 to 1 does not cause a transition to program mode or erase mode. 5. A RAM area cannot be erased by execution of software in accordance with the erase algorithm. 6. Block area EB0 contains the vector table. When performing RAM emulation, the vector table is needed in the overlap RAM.
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Section 20 ROM
H'000000 Flash memory (EB0) H'001000 (EB1) On-chip RAM (Shadow of H'FFD000 to H'FFDFFF) Flash memory (EB0)
H'002000 (EB2) H'003000 (EB3) (EB3) Flash memory (EB2)
H'FFD000 On-chip RAM (4 kbytes) H'FFDFFF On-chip RAM (4 kbytes)
Normal memory map
RAM overlap memory map
Figure 20.9 Example of RAM Overlap Operation
20.8
Flash Memory Programming/Erasing
A software method using the CPU is employed to program and erase flash memory in the onboard programming modes. Depending on the FLMCR1 setting, the flash memory operates in one of the following four modes: Program mode, program-verify mode, erase mode, and erase-verify mode. The programming control program in boot mode and the user program/erase control program in user program mode use these operating modes in combination to perform programming/erasing. Flash memory programming and erasing should be performed in accordance with the descriptions in section 20.8.1, Program/Program-Verify and section 20.8.2, Erase/Erase-Verify, respectively.
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Section 20 ROM
20.8.1
Program/Program-Verify
When writing data or programs to the flash memory, the program/program-verify flowchart shown in figure 20.10 should be followed. Performing programming operations according to this flowchart will enable data or programs to be written to the flash memory without subjecting the chip to voltage stress or sacrificing program data reliability. 1. Programming must be done to an empty address. Do not reprogram an address to which programming has already been performed. 2. Programming should be carried out 128 bytes at a time. A 128-byte data transfer must be performed even if writing fewer than 128 bytes. In this case, H'FF data must be written to the extra addresses. 3. Prepare the following data storage areas in RAM: A 128-byte programming data area, a 128byte reprogramming data area, and a 128-byte additional-programming data area. Perform reprogramming data computation and additional programming data computation according to figure 20.10. 4. Consecutively transfer 128 bytes of data in byte units from the reprogramming data area or additional-programming data area to the flash memory. The program address and 128-byte data are latched in the flash memory. The lower 8 bits of the start address in the flash memory destination area must be H'00 or H'80. 5. The time during which the P1 bit is set to 1 is the programming time. Figure 20.10 shows the allowable programming times. 6. The watchdog timer (WDT) is set to prevent overprogramming due to program runaway, etc. Set a value greater than (tspsu + tsp200 + tcp + tcpsu) s as the WDT overflow period. 7. For a dummy write to a verify address, write 1-byte data H'FF to an address whose lower 1 bit is B'0. Verify data can be read in words from the address to which a dummy write was performed. 8. The maximum number of repetitions of the program/program-verify sequence of the same bit is (N).
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Section 20 ROM
Write pulse application subroutine
Start of programming START Set SWE1 bit in FLMCR1 Wait (tsswe) 1s
Store 128-byte program data in program data area and reprogram data area
Sub-Routine Write Pulse WDT enable Set PSU1 bit in FLMCR1 Wait (tspsu) 50s Set P1 bit in FLMCR1 Wait tsp10 or 30 or 200 Clear P1 bit in FLMCR1 Wait (tcp) 5s Clear PSU1 bit in FLMCR1
Start of programming
Perform programming in the erased state. Do not perform additional programming on previously programmed addresses.
*4
n=1 m=0
Write 128-byte data in RAM reprogram data area consecutively to flash memory
*5
End of programming
*1
Sub-Routine-Call
Apply Write pulse tsp30 or 200
See Note 6 for pulse width
Set PV1 bit in FLMCR1 Wait (tcpsu) 5s Wait (tspv) 4s
Disable WDT H'FF dummy write to verify address
End Sub
Note 6: Write Pulse Width Number of Writes n Write Time (tsp30/tsp200) s Increment address
tspvr = Wait 2s
Read verify data
nn+1
*2
No m=1 No
1 2 3 4 5 6 7 8 9 10 11 12 13
30 * 30 * 30 * 30 * 30 * 30 * 200 200 200 200 200 200 200
Write data = verify data?
Yes 6n?
Yes Additional-programming data computation Transfer additional-programming data to additional-programming data area
Reprogram data computation
*4 *3
Transfer reprogram data to reprogram data area *4
998 999 1000
200 200 200
No
128-byte data verification completed?
Note: * Use a 10 s write pulse for additional programming.
Yes Clear PV1 bit in FLMCR1 Reprogram Wait (tcpv) s 6 n? No
RAM
Program data storage area (128 bytes)
Reprogram data storage area (128 bytes)
Yes Successively write 128-byte data from additional1 programming data area in RAM to flash memory * Sub-Routine-Call Apply Write Pulse (Additional programming) No No
Additional-programming data storage area (128 bytes)
m=0?
n 1000?
Yes Yes Notes: 1. Data transfer is performed by byte transfer. The lower 8 bits of the first address written Clear SWE1 bit in FLMCR1 Clear SWE1 bit in FLMCR1 to must be H'00 or H'80. A 128-byte data transfer must be performed even if writing fewer than 128 bytes; in this case, H'FF data must be written to the extra addresses. Wait (tcswe) 100s Wait (tcswe) 100s 2. Verify data is read in 16-bit (word) units. 3. Reprogram data is determined by the operation shown in the table below (comparison between End of programming Programming failure the data stored in the program data area and the verify data). Bits for which the reprogram data is 0 are programmed in the next reprogramming loop. Therefore, even bits for which programming has been completed will be subjected to programming once again if the result of the subsequent verify operation is NG. 4. A 128-byte area for storing program data, a 128-byte area for storing reprogram data, and a 128-byte area for storing additional data must be provided in RAM. The contents of the reprogram data area and additional data area are modified as programming proceeds. 5. A write pulse of 30 s or 200 s is applied according to the progress of the programming operation. See Note 6 for details of the pulse widths. When writing of additional-programming data is executed, a 10 s write pulse should be applied. Reprogram data X' means reprogram data when the write pulse is applied. Reprogram Data Computation Table
Original Data Verify Data Reprogram Data
Additional-Programming Data Computation Table
Comments Programming completed Programming incomplete; reprogram
(D) 0 0 1 1
(V) 0 1 0 1
(X) 1 0 1 1
Reprogram Data Verify Data Additional(X') (V) Programming Data (Y) 0 0 1 1 0 1 0 1 0 1 1 1
Comments Additional programming to be executed Additional programming not to be executed Additional programming not to be executed Additional programming not to be executed
Still in erased state; no action
Figure 20.10 Program/Program-Verify Flowchart
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Section 20 ROM
20.8.2
Erase/Erase-Verify
When erasing flash memory, the erase/erase-verify flowchart shown in figure 20.11 should be followed. 1. Prewriting (setting erase block data to all 0) is not necessary. 2. Erasing is performed in block units. Make only a single-bit specification in the erase block register 1 and 2 (EBR1 and EBR2). To erase multiple blocks, each block must be erased in turn. 3. The time during which the E1 bit is set to 1 is the flash memory erase time. 4. The watchdog timer (WDT) is set to prevent overprogramming due to program runaway, etc. Set a value greater than (tsesu + tse + tce + tcesu) ms as the WDT overflow period. 5. For a dummy write to a verify address, write 1-byte data H'FF to an address whose lower 1 bit is B'0. Verify data can be read in words from the address to which a dummy write was performed. 6. If the read data is not erased successfully, set erase mode again, and repeat the erase/eraseverify sequence as before. The maximum number of repetitions of the erase/erase-verify sequence is (N). 20.8.3 Interrupt Handling when Programming/Erasing Flash Memory
All interrupts, including the NMI interrupt, are disabled while flash memory is being programmed or erased, or while the boot program is executing, for the following three reasons: 1. Interrupt during programming/erasing may cause a violation of the programming or erasing algorithm, with the result that normal operation cannot be assured. 2. If interrupt exception handling starts before the vector address is written or during programming/erasing, a correct vector cannot be fetched and the CPU malfunctions. 3. If an interrupt occurs during boot program execution, normal boot mode sequence cannot be carried out.
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Section 20 ROM
Erase start
*1
SWE1 bit in FLMCR1 1 tsswe: Wait 1 s n=1 Set EBR1 (2) Enable WDT ESU1 bit in FLMCR1 1 tsesu: Wait 100 s E1 bit in FLMCR1 1 tse: Wait 10 ms E1 bit in FLMCR1 0 tce: Wait 10 s ESU1 bit in FLMCR1 0 tcesu: Wait 10 s Disable WDT EV1 bit in FLMCR1 1 tsev: Wait 20 s
Set block start address as verify address
Erasing should be done to a block
*3
start erasing
stop erasing
H'FF dummy write to verify address
tsevr: Wait 2 s Read verify data No *2
nn+1
Increment address
Verify data = all 1? Yes No
Last address of block? Yes EV1 bit in FLMCR1 0 tcev: Wait 4 s *4 EV1 bit in FLMCR1 0 tcev: Wait 4 s
No
All erase block erased? Yes SWE1 bit in FLMCR1 0 tcswe: Wait 100 s End of erasing
n 100? Yes
No
SWE1 bit in FLMCR1 0 tcswe: Wait 100 s Erase failure
Notes: 1. Pre-writing (all erase block data are cleared to 0) is not necessary. 2. Verify data is read out in 16 bit size (word access). 3. Erasing block register (EBR) can be set about 1 bit at a time. Do not specify 2 bits or more. 4. Erasing is performed block by block. when multiple blocks must be erased, erase each lock one by one.
Figure 20.11 Erase/Erase-Verify Flowchart
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Section 20 ROM
20.9
Program/Erase Protection
There are three kinds of flash memory program/erase protection; hardware protection, software protection, and error protection. 20.9.1 Hardware Protection
Hardware protection refers to a state in which programming/erasing of flash memory is forcibly disabled or aborted because of a transition to reset or standby mode. Flash memory control register 1 (FLMCR1), flash memory control register 2 (FLMCR2), erase block register 1 (EBR1), and erase block register 2 (EBR2) are initialized. In a reset via the RES pin, the reset state is not entered unless the RES pin is held low until oscillation stabilizes after powering on. In the case of a reset during operation, hold the RES pin low for the RES pulse width specified in the AC Characteristics section. 20.9.2 Software Protection
Software protection can be implemented against programming/erasing of all flash memory blocks by clearing the SWE1 bit in FLMCR1. When software protection is in effect, setting the P1 or E1 bit in FLMCR1 does not cause a transition to program mode or erase mode. By setting the erase block register 1 and 2 (EBR1 and EBR2), erase protection can be set for individual blocks. When EBR1 and EBR2 are set to H'00, erase protection is set for all blocks. By setting bit RAMS in RAMER, programming/erase protection is set for all blocks. 20.9.3 Error Protection
In error protection, an error is detected when CPU runaway occurs during flash memory programming/erasing, or operation is not performed in accordance with the program/erase algorithm, and the program/erase operation is aborted. Aborting the program/erase operation prevents damage to the flash memory due to overprogramming or overerasing. When the following errors are detected during programming/erasing of flash memory, the FLER bit in FLMCR2 is set to 1, and the error protection state is entered. * When the flash memory of the relevant address area is read during programming/erasing (including vector read and instruction fetch) * Immediately after exception handling (excluding a reset) during programming/erasing * When a SLEEP instruction is executed during programming/erasing * When the CPU loses the bus during programming/erasing
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Section 20 ROM
The FLMCR1, FLMCR2, EBR1, and EBR2 settings are retained, however program mode or erase mode is aborted at the point at which the error occurred. Program mode or erase mode cannot be re-entered by re-setting the P1 or E1 bit. However, PV1 and EV1 bit setting is enabled, and a transition can be made to verify mode. Error protection can be cleared only by a reset or in hardware standby.
20.10
Interrupt Handling when Programming/Erasing Flash Memory
All interrupts, including NMI input, are disabled when flash memory is being programmed or erased (when the P1 or E1 bit is set in FLMCR1), and while the boot program is executing in boot mode*1, to give priority to the program or erase operation. There are three reasons for this: 1. Interrupt during programming or erasing might cause a violation of the programming or erasing algorithm, with the result that normal operation could not be assured. 2. In the interrupt exception handling sequence during programming or erasing, the vector would not be read correctly*2, possibly resulting in CPU runaway. 3. If an interrupt occurred during boot program execution, it would not be possible to execute the normal boot mode sequence. Notes: 1. Interrupt requests must be disabled inside and outside the CPU until the programming control program has completed programming. 2. The vector may not be read correctly in this case for the following two reasons: * If flash memory is read while being programmed or erased (while the P1 or E1 bit is set in FLMCR1), correct read data will not be obtained (undetermined values will be returned). * If the interrupt entry in the vector table has not been programmed yet, interrupt exception handling will not be executed correctly.
20.11
Programmer Mode
In programmer mode, a PROM programmer can be used to perform programming/erasing via a socket adapter, just as for a discrete flash memory. Use a PROM programmer which supports the Renesas 256-kbyte flash memory on-chip microcomputer device type (FZTAT256V3A). The socket adapter pin correspondence diagram is shown in figure 20.12.
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Section 20 ROM
This LSI Pin No. FP-100B,TFP-100B, TFP-100G 17 16 15 13 11 10 9 8 7 6 5 4 3 2 1 100 99 98 97 25 24 23 22 21 20 19 18 26 28 27 66
12, 30, 53, 54, 58, 60, 61, 62, 75
Pin Name A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 D0 D1 D2 D3 D4 D5 D6 D7 CE OE WE FWE
Socket Adapter (Conversion to 40-Pin Arrangement)
HN27C4096HG (40-Pin)
Pin No. 21 22 23 24 25 26 27 28 29 31 32 33 34 35 36 37 38 39 10 19 18 17 16 15 14 13 12 2 20 3 4 1, 40
Pin Name A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 CE OE WE FWE VCC VSS NC A20 A19
VCC
11, 30 5, 6, 7 8
14, 29, 38, 40,42, 56, 64, 67
VSS
9
Power-on reset circuit Oscillator circuit Legend: FWE: I/O0 to 7: A20 to 0: OE: CE: WE:
59 63 65 Other than the above
RES XTAL EXTAL N.C.(OPEN)
Flash write enable Data input/output Address input Output enable Chip enable Write enable
Note: This drawing indicates pin correspondences and does not show the entire circuitry of the socket adapter.
Figure 20.12 Socket Adapter Pin Correspondence Diagram
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Section 20 ROM
20.12
Power-Down States for Flash Memory
In user mode, the flash memory will operate in either of the following states: * Normal operating mode The flash memory can be read and written to at high speed. * Power-down state The flash memory can be read when part of the power circuit is halted and the LSI operates by subclocks. * Standby mode All flash memory circuits are halted. Table 20.6 shows the correspondence between the operating modes of the H8S/2268 Group and the flash memory. When the flash memory returns to its normal operating state from standby mode, a period to stabilize the power supply circuits that were stopped is needed. When the flash memory returns to its normal operating state, bits STS2 to STS0 in SBYCR must be set to provide a wait time of at least 100 s, even when the external clock is being used. Table 20.6 Flash Memory Operating States
LSI Operating State Active mode Sleep mode Watch mode Standby mode Sub-active mode Sub-sleep mode PDWND = 0: Power-down mode (read only) PDWND = 1: Normal operating mode (read only) Flash Memory Operating State Normal operating mode Normal operating mode Standby mode
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Section 20 ROM
20.13
Flash Memory Programming and Erasing Precautions
Precautions concerning the use of on-board programming mode, the RAM emulation function, and programmer mode are summarized below. Use the specified voltages and timing for programming and erasing: Applied voltages in excess of the rating can permanently damage the device. Use a PROM programmer that supports the Renesas 256-kbyte flash memory on-chip microcomputer device type (FZTAT256V3A). Do not select the HN27C4096 setting for the PROM programmer, and only use the specified socket adapter. Failure to observe these points may result in damage to the device. Powering on and off (see figures 20.13 to 20.15): Do not apply a high level to the FWE pin until VCC has stabilized. Also, drive the FWE pin low before turning off VCC. When applying or disconnecting VCC power, fix the FWE pin low and place the flash memory in the hardware protection state. The power-on and power-off timing requirements should also be satisfied in the event of a power failure and subsequent recovery. FWE application/disconnection (see figures 20.13 to 20.15): FWE application should be carried out when MCU operation is in a stable condition. If MCU operation is not stable, fix the FWE pin low and set the protection state. The following points must be observed concerning FWE application and disconnection to prevent unintentional programming or erasing of flash memory: * Apply FWE when the VCC voltage has stabilized within its rated voltage range. * In boot mode, apply and disconnect FWE during a reset. * In user program mode, FWE can be switched between high and low level regardless of the reset state. FWE input can also be switched during execution of a program in flash memory. * Do not apply FWE if program runaway has occurred. * Disconnect FWE only when the SWE1, ESU1, PSU1, EV1, PV1, P1, and E1 bits in FLMCR1 are cleared. Make sure that the SWE1, ESU1, PSU1, EV1, PV1, P1, and E1 bits are not set by mistake when applying or disconnecting FWE.
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Section 20 ROM
Do not apply a constant high level to the FWE pin: Apply a high level to the FWE pin only when programming or erasing flash memory. A system configuration in which a high level is constantly applied to the FWE pin should be avoided. Also, while a high level is applied to the FWE pin, the watchdog timer should be activated to prevent overprogramming or overerasing due to program runaway, etc. Use the recommended algorithm when programming and erasing flash memory: The recommended algorithm enables programming and erasing to be carried out without subjecting the device to voltage stress or sacrificing program data reliability. When setting the P1 or E1 bit in FLMCR1, the watchdog timer should be set beforehand as a precaution against program runaway, etc. Do not set or clear the SWE1 bit during execution of a program in flash memory: Wait for at least 100 s after clearing the SWE1 bit before executing a program or reading data in flash memory. When the SWE1 bit is set, data in flash memory can be rewritten. Access flash memory only for verify operations (verification during programming/erasing). Also, do not clear the SWE1 bit during programming, erasing, or verifying. Similarly, when using the RAM emulation function while a high level is being input to the FWE pin, the SWE1 bit must be cleared before executing a program or reading data in flash memory. However, the RAM area overlapping flash memory space can be read and written to regardless of whether the SWE1 bit is set or cleared. Do not use interrupts while flash memory is being programmed or erased: All interrupt requests, including NMI, should be disabled during FWE application to give priority to program/erase operations. Do not perform additional programming. Erase the memory before reprogramming: In onboard programming, perform only one programming operation on a 128-byte programming unit block. In programmer mode, too, perform only one programming operation on a 128-byte programming unit block. Programming should be carried out with the entire programming unit block erased. Before programming, check that the chip is correctly mounted in the PROM programmer: Overcurrent damage to the device can result if the index marks on the PROM programmer socket, socket adapter, and chip are not correctly aligned.
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Section 20 ROM
Do not touch the socket adapter or chip during programming: Touching either of these can cause contact faults and write errors. Reset the flash memory before turning on the power: To reset the flash memory during oscillation stabilization period, the reset signal must be input for at least 100 s. Apply the reset signal while SWE1 is low to reset the flash memory during its operation: The reset signal is applied at least 100 s after the SWE1 bit has been cleared.
Programming/ erasing Wait time: tsswe possible Wait time: 100s
tOSC1 VCC tMDS*3 min 0s
FWE
min 0s
MD2, MD1*1 tMDS*3 RES SWE1 set SWE1bit Period during which flash memory access is prohibited (tsswe: Wait time after setting SWE1 bit)*2 Period during which flash memory can be programmed (Execution of program in flash memory prohibited, and data reads other than verify operations prohibited) Notes: 1. Except when switching modes, the level of the mode pins (MD2, MD1) must be fixed until power-off by pulling the pins up or down. 2. See section 25.2.8, Flash Memory Characteristics. 3. Mode programming setup time tMDS (min) = 200ns. SWE1 cleared
Figure 20.13 Power-On/Off Timing (Boot Mode)
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Section 20 ROM
Programming/ erasing Wait time: tsswe possible Wait time: 100s
tOSC1 VCC min 0s
FWE
MD2,MD1*1 tMDS*3 RES SWE1 set SWE1 bit SWE1 cleared
Period during which flash memory access is prohibited (tsswe: Wait time after setting SWE1 bit)*2 Period during which flash memory can be programmed (Execution of program in flash memory prohibited, and data reads other than verify operations prohibited) Notes: 1. Except when switching modes, the level of the mode pins (MD2, MD1) must be fixed until power-off by pulling the pins up or down. 2. See section 25.2.8, Flash Memory Characteristics. 3. Mode programming setup time tMDS (min) = 200ns.
Figure 20.14 Power-On/Off Timing (User Program Mode)
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Section 20 ROM
Programming/ erasing possible
Wait time: tsswe Programming/ erasing possible
Wait time: tsswe Programming/ erasing possible
*4 tOSC1 VCC min 0s FWE tMDS
2 tMDS*
*4
*4
MD2, MD1 tMDS tRESW RES SWE1 set SWE1 bit Mode change*1 Boot mode SWE1 cleared
Mode User change*1 mode
User program mode
User mode
User program mode
Period during which flash memory access is prohibited (tsswe: Wait time after setting SWE1 bit)*3 Period during which flash memory can be programmed (Execution of program in flash memory prohibited, and data reads other than verify operations prohibited) Notes: 1. When entering boot mode or making a transition from boot mode to another mode, mode switching must be carried out by means of RES input. 2. When making a transition from boot mode to another mode, a mode programming setup time tMDS (min) of 200 ns is necessary with respect to RES clearance timing. 3. See section 25.2.8, Flash Memory Characteristics. 4. Wait time: 100s.
Figure 20.15 Mode Transition Timing (Example: Boot Mode User Mode User Program Mode)
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Programming/ erasing possible
Wait time: tsswe
Wait time: tsswe
Section 20 ROM
20.14
Note on Switching from F-ZTAT Version to Masked ROM Version
The masked ROM version does not have the internal registers for flash memory control that are provided in the F-ZTAT version. Table 20.7 lists the registers that are present in the F-ZTAT version but not in the masked ROM version. If a register listed in table 20.7 is read in the masked ROM version, an undefined value will be returned. Therefore, if application software developed on the F-ZTAT version is switched to a masked ROM version product, it must be modified to ensure that the registers in table 20.7 have no effect. Table 20.7 Registers Present in F-ZTAT Version but Absent in Masked ROM Version
Register Flash memory control register 1 Flash memory control register 2 Erase block register 1 Erase block register 2 RAM emulation register Flash memory power control register Serial control register X (Only bit 3) Abbreviation FLMCR1 FLMCR2 EBR1 EBR2 RAMER FLPWCR SCRX Address H'FFA8 H'FFA9 H'FFAA H'FFAB H'FEDB H'FFAC H'FDB4
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Section 21 Clock Pulse Generator
Section 21 Clock Pulse Generator
This LSI has an on-chip clock pulse generator that generates the system clock (), the bus master clock, and internal clocks. The clock pulse generator consists of an oscillator, duty adjustment circuit, clock selection circuit, medium-speed clock divider, bus master clock selection circuit, subclock oscillator, and wave formation circuit. A block diagram of the clock pulse generator is shown in figure 21.1.
LPWRCR RFCUT
SCKCR SCK2 to SCK0
EXTAL XTAL
System clock oscillator
Duty adjustment circuit Clock selection circuit SUB
Mediumspeed clock divider
/2 to /32
Bus master clock selection circuit
Internal clock
OSC1 OSC2
Subclock oscillator
Waveform Generation Circuit
Internal clock to peripheral modules
Bus master clock to CPU and DTC
WDT_1, TMR4, LCD count clock Legend: LPWRCR: Low-power control register SCKCR: System clock control register
Figure 21.1 Block Diagram of Clock Pulse Generator Frequency changes are performed by software by settings in the low-power control register (LPWRCR) and system clock control register (SCKCR).
CPG0501B_000020020700
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Section 21 Clock Pulse Generator
21.1
Register Descriptions
The on-chip clock pulse generator has the following registers. * System clock control register (SCKCR) * Low-power control register (LPWRCR) 21.1.1 System Clock Control Register (SCKCR)
SCKCR performs medium-speed mode control.
Bit 7, 6 Bit Name Initial Value All 0 R/W R/W Description Reserved These are readable/writable bits, but the write value should always be 0. 5, 4 3 All 0 0 R/W Reserved These bits are always read as 0.Writing is invalid. Reserved This is a readable/writable bit, but the write value should always be 0. 2 1 0 SCK2 SCK1 SCK0 0 0 0 R/W R/W R/W System Clock Select 2 to 0 These bits select the bus master clock. 000: High-speed mode 001: Medium-speed clock is /2 010: Medium-speed clock is /4 011: Medium-speed clock is /8 100: Medium-speed clock is /16 101: Medium-speed clock is /32 11X: Setting prohibited Legend: X: Don't care
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Section 21 Clock Pulse Generator
21.1.2
Low-Power Control Register (LPWRCR)
LPWRCR performs down-mode control, selects sampling frequency for eliminating noise, performs subclock generation control, and specifies multiplication factor.
Bit 7 Bit Name DTON Initial Value 0 R/W R/W Description Direct Transition ON Flag 0: When the SLEEP instruction is executed in high-speed mode or medium-speed mode, operation shifts to sleep mode, software standby mode, or watch mode. When the SLEEP instruction is executed in sub-active mode, operation shifts to sub-sleep mode or watch mode. 1: When the SLEEP instruction is executed in high-speed mode or medium-speed mode, operation shifts directly to sub-active mode, or shifts to sleep mode or software standby mode. When the SLEEP instruction is executed in sub-active mode, operation shifts directly to high-speed mode, or shifts to sub-sleep mode. 6 LSON 0 R/W Low Speed ON Fag 0: When the SLEEP instruction is executed in high-speed mode or medium-speed mode, operation shifts to sleep mode, software standby mode, or watch mode*. When the SLEEP instruction is executed in sub-active mode, operation shifts to watch mode* or shifts directly to high-speed mode. Operation shifts to high-speed mode when watch mode is cancelled. 1: When the SLEEP instruction is executed in high-speed mode, operation shifts to watch mode or sub-active mode. When the SLEEP instruction is executed in sub-active mode, operation shifts to sub-sleep mode or watch mode. Operation shifts to sub-active mode when watch mode is cancelled.
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Section 21 Clock Pulse Generator Initial Value 0
Bit 5
Bit Name NESEL
R/W R/W
Description Noise Elimination Sampling Frequency Select This bit selects the sampling frequency of the subclock (SUB) generated by the subclock oscillator is sampled by the clock () generated by the system clock oscillator Set 0 when is 5 MHz or higher. Set 1 when is 2.1 MHz or lower. Any value can be set when is 2.1 to 5 MHz. 0: Sampling using 1/32 x 1: Sampling using 1/4 x
4
SUBSTP
0
R/W
Subclock Enable This bit enables/disables subclock generation. This bit should be set to 1 when subclock is not used. 0: Enables subclock generation. 1: Disables subclock generation.
3
RFCUT
0
R/W
Oscillation Circuit Feedback Resistance Control Bit Selects whether or not built-in feedback resistance and duty adjustment circuit of the system clock generator are used when an external clock is input. Do not access when the crystal resonator is used. After setting this bit in the external clock input state, enter software standby mode, watch mode, or subactive mode. When software standby mode, watch mode, or subactive mode is entered, switch whether or not built-in feedback resistance and duty adjustment circuit are used. 0: Built-in feedback resistance and duty adjustment circuit of the system clock generator used. 1: Built-in feedback resistance and duty adjustment circuit of the system clock generator not used.
2
0
R/W
Reserved This is a readable/writable bit, but the write value should always be 0.
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Section 21 Clock Pulse Generator Initial Value 0 0
Bit 1 0
Bit Name STC1 STC0
R/W R/W R/W
Description Multiplication factor setting Specifies multiplication factor of the PLL circuit built in the evaluation chip. The specified multiplication factor becomes valid software standby mode, watch mode, or subactive mode is entered. These bits should be set to 11 in this LSI. Since the value becomes STC1 = STC0 = 0 after a reset, set STC1 = STC0 = 1. 00: x 1 01: x 2 (setting prohibited) 10: x 4 (setting prohibited) 11: PLL is bypass
Note: * When watch mode or subactive mode is entered, set high-speed mode.
21.2
System Clock Oscillator
System clock pulses can be supplied by connecting a crystal resonator, or by input of an external clock. 21.2.1 Connecting a Crystal Resonator
A crystal resonator can be connected as shown in the example in figure 21.2. Select the damping resistance Rd according to table 21.1. An AT-cut parallel-resonance crystal should be used.
CL1 EXTAL XTAL Rd CL2 CL1 = CL2 = 10 to 22 pF
Note: CL1 and CL2 are reference values including the floating capacitance of the board.
Figure 21.2 Connection of Crystal Resonator (Example)
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Section 21 Clock Pulse Generator
Table 21.1 Damping Resistance Value
Frequency (MHz) Rd () 2 1k 4 500 6 300 8 200 10 100 12 0 16 0 20 0
Figure 21.3 shows the equivalent circuit of the crystal resonator. Use a crystal resonator that has the characteristics shown in table 21.2.
CL XTAL L Rs EXTAL
C0
AT-cut parallel-resonance type
Figure 21.3 Crystal Resonator Equivalent Circuit Table 21.2 Crystal Resonator Characteristics
Frequency (MHz) RS max () C0 max (pF) 2 500 7 4 120 7 6 100 7 8 80 7 10 60 7 12 60 7 16 50 7 20 40 7
21.2.2
External Clock Input
An external clock signal can be input as shown in the examples in figure 21.4. If the XTAL pin is left open, ensure that stray capacitance does not exceed 10 pF. When complementary clock is input to the XTAL pin, the external clock input should be fixed high in standby mode, subactive mode, subsleep mode, or watch mode.
EXTAL XTAL Open
External clock input
(a) XTAL pin left open
EXTAL XTAL
External clock input
(b) Complementary clock input at XTAL pin
Figure 21.4 External Clock Input (Examples)
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Section 21 Clock Pulse Generator
Table 21.3 shows the input conditions for the external clock. Table 21.4 shows the input conditions for the external clock when duty adjustment circuit is not used. Table 21.3 External Clock Input Conditions
VCC = 2.7 V to 5.5 V V CC = 4.0 V to 5.5 V
Item External clock input low pulse width External clock input high pulse width External clock rise time External clock fall time
Symbol tEXL tEXH tEXr tEXf
Min 30 30
Max 7 7
Min 20 20
Max 5 5
Unit ns ns ns ns
Test Conditions Figure 21.5
Table 21.4 External Clock Input Conditions (Duty Adjustment Circuit Not Used)
VCC = 2.7 V to 5.5 V VCC = 4.0 V to 5.5 V
Item External clock input low pulse width External clock input high pulse width External clock rise time External clock fall time
Symbol tEXL tEXH tEXr tEXf
Min 37 37
Max 7 7
Min 25 25
Max 5 5
Unit ns ns ns ns
Test Conditions Figure 21.5
Note: When duty adjustment circuit is not used, maximum operating frequency is lowered according to the input waveform. (Example: When tEXL = tEXH = 50 ns, tEXr = tEXf = 10 ns, clock cycle time = 120 ns, and maximum operating frequency = 8.3 MHz)
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Section 21 Clock Pulse Generator
tEXH tEXL VCC x 0.5
EXTAL
tEXr
tEXf
Figure 21.5 External Clock Input Timing 21.2.3 Notes on Switching External Clock
When two or more external clocks (e.g.: 10 MHz and 2 MHz) are used as the system clock, input clock should be switched in software standby mode. An example of external clock switching circuit is shown in figure 21.6. An example of external clock switching timing is shown in figure 21.7.
This LSI External clock switch request Control circuit External interrupt signal External clock switch signal Port output External interrupt
External clock 1 External clock 2
Selector
EXTAL
Figure 21.6 External Clock Switching Circuit (Examples)
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Section 21 Clock Pulse Generator
External clock 1 External clock 2 Operation Clock switching request (1) Port output External clock switching circuit EXTAL (2) (3) SLEEP instruction execution Interrupt exception handling (5)
Internal clock External interrupt Active (external clock2) 200ns or more (4)
Standby mode
Software standby mode
Active (external clock1)
(1) Port output (clock switching) (2) Transition to software standby mode (3) External clock switchover (4) External interrupt generation (An interrupt should be input 200 ns or more after transition to software standby mode.) (5) Interrupt exception handling
Figure 21.7 External Clock Switching Timing (Examples)
21.3
Duty Adjustment Circuit
The duty adjustment circuit is valid when oscillation frequency is more than 5 MHz. The duty adjustment circuit adjusts clock output fr/m the system clock oscillator to generate the system clock ().
21.4
Medium-Speed Clock Divider
The medium-speed clock divider divides the system clock to generate /2, /4, /8, /16, and /32.
21.5
Bus Master Clock Selection Circuit
The bus master clock selection circuit selects the clock supplied to the bus master by setting the bits SCK2 to SCK0 in SCKCR. The bus master clock can be selected from system clock (), or medium-speed clocks (/2, /4, /8, /16, /32).
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Section 21 Clock Pulse Generator
21.6
21.6.1
Subclock Oscillator
Connecting 32.768-kHz Crystal Resonator
To supply a clock to the subclock divider, connect a 32.768-kHz crystal resonator, as shown in Figure 21.8. Figure 21.9 shows the equivalence circuit for a 32.768kHz oscillator.
C1 OSC1
C2 OSC2 C1 = C2 = 15 pF (typ)
Note: C1 and C2 are reference values including the floating capacitance of the boad.
Figure 21.8 Example Connection of 32.768-kHz Crystal Resonator
Ls Cs Rs
OSC1 Co Co = 1.5 pF (typ.) Rs = 14 k (typ.) fw = 32.768 kHz
OSC2
Type name = C001R (SEIKO EPSON)
Figure 21.9 Equivalence Circuit for 32.768-kHz Crystal Resonator
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Section 21 Clock Pulse Generator
21.6.2
Handling Pins when Subclock not Required
If no subclock is required, connect the OSC1 pin to Vss and leave OSC2 open, as shown in figure 21.10. Set the SUBSTP bit of LPWRCR to 1.
OSC1
OSC2
Open
Note: Set the SUBSTP bit in LPWRCR to 1.
Figure 21.10 Pin Handling When Subclock Not Required
21.7
Subclock Waveform Generation Circuit
To eliminate noise from the subclock input to OSCI, the subclock is sampled using the dividing clock . The sampling frequency is set using the NESEL bit of LPWRCR. For details, see section 21.1.2, Low Power Control Register (LPWRCR). No sampling is performed in sub-active mode, sub-sleep mode, or watch mode.
21.8
21.8.1
Usage Notes
Note on Crystal Resonator
As various characteristics related to the crystal resonator are closely linked to the user's board design, thorough evaluation is necessary on the user's part, using the resonator connection examples shown in this section as a guide. As the resonator circuit ratings will depend on the floating capacitance of the resonator and the mounting circuit, the ratings should be determined in consultation with the resonator manufacturer. The design must ensure that a voltage exceeding the maximum rating is not applied to the oscillator pin.
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Section 21 Clock Pulse Generator
21.8.2
Note on Board Design
When designing the board, place the crystal resonator and its load capacitors as close as possible to the XTAL and EXTAL pins. Make wires as short as possible. Other signal lines should be routed away from the oscillator circuit, as shown in figure 21.11. This is to prevent induction from interfering with correct oscillation.
Avoid C2 Signal A Signal B This LSI XTAL, OSC2 EXTAL, OSC1 C1
Figure 21.11 Note on Board Design of Oscillator Circuit 21.8.3 Note on Using a Crystal Resonator
When a microcomputer runs, internal power supply potential will fluctuate synchronized with the system clock. In addition, according to the individual characteristics of crystal resonator, there is a case where the amplitude of the oscillation waveform will not be grown sufficiently immediately after oscillation stabilization period, thus the oscillation waveform is easily affected by the fluctuation of the power supply voltage. In this condition, oscillation waveform will be unstable, resulting in the system clock instability and malfunction of the microcomputer. If a malfunction occurs, the setting of the standby timer select 2 to 0 (STS2 to STS0) bits in the standby control register (SBYCR) must be set so as for the standby time to be longer. For example, if a malfunction occurs when the standby time is set to 8192 states, the operation should be confirmed by setting the standby time to 16384 states or longer. In addition, if a malfunction similar to at state transition occurs at reset, the RES pin hold time must be set longer.
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Section 22 Power-Down Modes
Section 22 Power-Down Modes
In addition to the normal program execution state, the H8S/2268 Group and the H8S/2264 Group have nine power-down modes in which operation of the CPU and oscillator is halted and power dissipation is reduced. Low-power operation can be achieved by individually controlling the CPU, on-chip peripheral modules, and so on. The H8S/2268 Group and the H8S/2264 Group operating modes are as follows: 1. High-speed mode 2. Medium-speed mode 3. Subactive mode 4. Sleep mode 5. Subsleep mode 6. Watch mode 7. Module stop mode 8. Software standby mode 9. Hardware standby mode 2. to 9. are low power dissipation states. Sleep mode and sub-sleep mode are CPU states, mediumspeed mode is a CPU and bus master state, sub-active mode is a CPU and bus master and internal peripheral function state, and module stop mode is an internal peripheral function (including bus masters other than the CPU) state. Some of these states can be combined. After a reset, the LSI is in high-speed mode with modules other than the DTC in module stop mode. Table 22.1 shows the internal state of the LSI in the respective modes. Table 22.2 shows the conditions for shifting between the low power dissipation modes. Figure 22.1 is a mode transition diagram.
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Section 22 Power-Down Modes
Table 22.1 LSI Internal States in Each Mode
Function System clock pulse generator Subclock pulse generator CPU HighSpeed MediumSpeed Sleep Module Stop Watch Subactive Halted Software Hardware Subsleep Standby Standby Halted Halted Halted
Function- Function- Function- Function- Halted ing ing ing ing
Function- Function- Function- Function- Function- Function- Function- Function- Halted ing/halted ing/halted ing/halted ing/halted ing ing ing ing/halted Function- Halted Subclock Halted ing operation Retained Retained Halted Retained Retained Halted Undefined Retained
Instructions Function- Medium- Halted ing speed Registers Retained operation
RAM
Function- Function- Function- Function- Retained Function- Retained ing ing ing (DTC) ing ing *2
I/O External NMI interrupts IRQn WKPn Peripheral PBC* functions
2
Function- Function- Function- Function- Retained Function- Function- Halted ing ing ing ing ing ing
High impedance
Function- Function- Function- Function- Function- Function- Function- Function- Halted ing ing ing ing ing ing ing ing Function- Medium- Function- Function- Halted Subclock Halted Halted Halted ing speed ing ing/halted (retained) operation (retained) (retained) (reset) operation (retained) Function- Medium- Function- Function- Halted Halted Halted Halted Halted ing speed ing ing/halted (retained) (retained) (retained) (retained) (reset) operation (retained) Halted Function- Function- Function- Function- Subclock Subclock Subclock Halted ing ing ing ing/halted operation operation operation (retained) (reset) 1 *1 *1 (retained) * Function- Function- Function- Function- Subclock Subclock Subclock Halted Halted ing ing ing ing operation operation operation (retained) (reset) 1 1 1 * * * Function- Function- Function- Function- Halted Subclock Subclock Halted Halted ing ing ing ing (retained) operation operation (retained) (reset) Function- Function- Function- Function- Halted Subclock Subclock Halted Halted ing ing ing ing/halted (retained) operation operation (retained) (reset) (retained) Function- Function- Function- Function- Halted Halted Halted Halted Halted ing ing ing ing/halted (retained) (retained) (retained) (retained) (reset) (retained)
DTC*2
TMR_4*2 LCD WDT_1
WDT_0 TMR_0 TMR_1 TMR_2*2 TMR_3*2 TPU SCI IIC 2 DTMF* 23 D/A* * A/D
Function- Function- Function- Function- Halted ing ing ing ing/halted (reset) (reset)
Halted (reset)
Halted (reset)
Halted (reset)
Halted (reset)
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Section 22 Power-Down Modes Notes: "Halted (retained)" means that internal register values are retained. The internal state is "operation suspended." "Halted (reset)" means that internal register values and internal states are initialized. In module stop mode, only modules for which a stop setting has been made are halted (reset or retained). 2 1. When the TMR_4* , WDT_1, or LCD is operated in watch, subactive, or subsleep mode, use the subclock. 2. Supported only by the H8S/2268 Group. 3. "Halted (retained)" means that internal register values are retained. For analog outputs, the given D/A absolute accuracy is not satisfies because the internal state is "operation suspended."
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Section 22 Power-Down Modes
Program-halted state STBY pin = Low Reset state STBY pin = High RES pin = Low Program execution state RES pin = High SSBY= 0, LSON= 0 SLEEP instruction High-speed mode (main clock) Any interrupt *3 SCK2 to SCK0= 0 SCK2 to SCK0 0 SLEEP instruction External interrupt *4 SLEEP instruction Interrupt *1 LSON bit = 0 SLEEP instruction SSBY = 1, PSS = 1 DTON = 1, LSON = 0 After the oscillation settling time (STS2 to 0), clock switching exception processing SLEEP instruction SSBY = 1, PSS = 1 DTON = 1, LSON = 1 Clock switching exception processing SSBY= 1, PSS= 1, DTON= 0 Watch mode (subclock) SSBY= 1, PSS= 0, LSON= 0 Software standby mode Sleep mode (main clock) Hardware standby mode
Medium-speed mode (main clock)
SLEEP instruction
Interrupt *1 LSON bit = 1 SLEEP instruction Interrupt *2
SSBY= 0, PSS= 1, LSON= 1 Sub-sleep mode (subclock)
Sub-active mode (subclock)
: Transition after exception processing
: Low power dissipation mode
Notes: When a transition is made between modes by means of an interrupt, the transition cannot be made on interrupt source generation alone. Ensure that interrupt handling is performed after accepting the interrupt request. From any state except hardware standby mode, a transition to the reset state occurs when RES is driven Low. From any state, a transition to hardware standby mode occurs when STBY is driven low. Always select high-speed mode before making a transition to watch mode or sub-active mode. 1. H8S/2268 Group: NMI, IRQ0, IRQ1, IRQ3 to IRQ5, WKP0 to WKP7, WDT1 interrupt, and TMR4 interrupt H8S/2264 Group: NMI, IRQ0, IRQ1, IRQ3, IRQ4, WKP0 to WKP7, and WDT1 interrupt 2. H8S/2268 Group: NMI, IRQ0, IRQ1, IRQ3 to IRQ5, WKP0 to WKP7, WDT0 interrupt, WDT1 interrupt, and TMR0 to TMR4 interrupts H8S/2264 Group: NMI, IRQ0, IRQ1, IRQ3, IRQ4, WKP0 to WKP7, WDT0 interrupt, WDT1 interrupt, TMR0 interrupt, and TMR1 interrupt 3. All interrupts 4. H8S/2268 Group: NMI, IRQ0, IRQ1, IRQ3 to IRQ5, WKP0 to WKP7 H8S/2264 Group: NMI, IRQ0, IRQ1, IRQ3, IRQ4, WKP0 to WKP7
Figure 22.1 Mode Transition Diagram
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Section 22 Power-Down Modes
Table 22.2 Low Power Dissipation Mode Transition Conditions
Status of Control Bit at Transition Pre-Transition SSBY PSS State High-speed/ 0 Medium-speed 0 1 1 1 1 1 1 Sub-active 0 0 0 1 1 1 1 1 Legend: X : Don't care : Do not set. X X 0 0 1 1 1 1 0 1 1 0 1 1 1 1 State After Transition State After Transition Back from Low Power Invoked by SLEEP Mode Invoked by LSON DTON Instruction Interrupt 0 1 0 1 0 1 0 1 X 0 1 X 0 1 0 1 X X X X 0 0 1 1 X X X X 0 0 1 1 Sleep Software standby Watch Watch Sub-active Sub-sleep Watch Watch High-speed High-speed/Medium-speed High-speed/Medium-speed High-speed Sub-active Sub-active High-speed Sub-active
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Section 22 Power-Down Modes
22.1
Register Description
The following registers relates to the power-down modes. For details on system clock control register (SCKCR), refer to section 21.1.1, System Clock Control Register (SCKCR). For details on low power control register (LPWRCR), refer to section 21.1.2, Low Power Control Register (LPWRCR). For details on timer control status register (TCSR_1), refer to section 12.2.2, Timer Control/Status Register (TCSR). * Standby control register (SBYCR) * Module stop control register A (MSTPCRA) * Module stop control register B (MSTPCRB) * Module stop control register C (MSTPCRC) * Module stop control register D (MSTPCRD) * Low power control register (LPWRCR) * System clock control register (SCKCR) * Timer control status register (TCSR_1) 22.1.1 Standby Control Register (SBYCR)
SBYCR performs power-down mode control.
Bit 7 Bit Name SSBY Initial Value 0 R/W R/W Description Software Standby Specifies transition destination when the SLEEP instruction is executed. 0: Shifts to sleep mode when the SLEEP instruction is executed in high-speed mode or medium-speed mode. Shifts to sub-sleep mode when the SLEEP instruction is executed in sub-active mode. 1: Shifts to software standby mode, sub-active mode, and watch mode when the SLEEP instruction is executed in high-speed mode or medium-speed mode. Shifts to watch mode or high-speed mode when the SLEEP instruction is executed in sub-active mode. Note that the value of the SSBY bit does not change even when software standby mode is canceled and making normal operation mode transition by executing an external interrupt. To clear this bit, 0 should be written to.
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Section 22 Power-Down Modes Initial Value 0 0 0
Bit 6 5 4
Bit Name STS2 STS1 STS0
R/W R/W R/W R/W
Description Standby Timer Select 2 to 0 These bits select the MCU wait time for clock settling to cancel software standby mode, watch mode, or subactive mode. With a crystal resonator (Table 22.3), select a wait time of 8 ms (oscillation settling time) or more, depending on the operating frequency. With an external clock, there are no specific wait requirements. 000: Standby time = 8192 states 001: Standby time = 16384 states 010: Standby time = 32768 states 011: Standby time = 65536 states 100: Standby time = 131072 states 101: Standby time = 262144 states 110: Standby time = 2048 states 111: Standby time = Reserved
3
1
R/W
Reserved This is a readable/writable bit, but the write value should always be 1.
2 to 0
All 0
Reserved These bits are always read as 0 and cannot be modified.
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Section 22 Power-Down Modes
22.1.2
Module Stop Control Registers A to D (MSTPCRA to MSTPCRD)
MSTPCR performs module stop mode control. When bits in MSTPCR registers are set to 1, module stop mode is set. When cleared to 0, module stop mode is cleared. MSTPCRA
Bit 7 6 5 4 3 2 1 0 Bit Name Initial Value R/W R/W R/W R/W R/W R/W R/W R/W R/W A/D converter 8-bit timer (TMR_2, TMR_3) Data transfer controller (DTC) 16-bit timer pulse unit (TPU) 8-bit timer (TMR_0, TMR_1) Target Module
1 MSTPA7 * 0 2 MSTPA6 * 0
MSTPA5 MSTPA4 MSTPA3 MSTPA1 *1
1 1
1 *1 1 MSTPA2 1 *2 1 MSTPA0
MSTPCRB
Bit 7 6 5 4 3 2 1 0 Bit Name MSTPB7 MSTPB6 MSTPB4
2
Initial Value 1
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Target Module Serial communication interface 0 (SCI_0) Serial communication interface 1 (SCI_1) I C bus interface 0 (I C_0) (optional) I C bus interface 1 (I C_1) (optional)
2 2 2 2
1 *1 1 MSTPB5 1 MSTPB3 * 1 1 MSTPB2 * 1 1 MSTPB1 * 1 MSTPB0 *1 1
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Section 22 Power-Down Modes
MSTPCRC
Bit 7 6 5 4 3 2 1 0 Bit Name MSTPC7 MSTPC6 MSTPC5 *1 *2 Initial Value 1 1 R/W R/W R/W R/W R/W R/W R/W R/W R/W DTMF generation circuit D/A converter PC break controller (PBC) Target Module Serial communication interface 2 (SCI_2)
1 *2 1 MSTPC4 1 MSTPC3* 1
2 MSTPC2* 1 1 MSTPC1* 1 1 MSTPC0* 1
MSTPCRD
Bit 7 6 5 4 3 2 1 0 Bit Name MSTPD6 Initial Value R/W R/W R/W R/W R/W R/W R/W R/W R/W LCD controller/driver 8-bit reload timer (TMR_4) Target Module
1 MSTPD7* 1
1 *2 1 MSTPD5
1 MSTPD4* 1 1 MSTPD3* 1
MSTPD2 MSTPD1 MSTPD0
*1 *1 *1
1 1 1
Notes: 1. Bit MSTPA7 can be read/written to. This bit is initialized to 0. Only 1 should be written to. Bits MSTPA3, MSTPA2, MSTPB5, MSTPB2 to MSTPB0, MSTPC6, MSTPC3, MSTPC1, MSTPC0, MSTPD7, MSTPD4 to MSTPD0 can be read/written to. These bits are initialized to 1. Only 1 should be written to. 2. With the H8S/2264 Group, only 1 should be written to.
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Section 22 Power-Down Modes
22.2
Medium-Speed Mode
In high-speed mode, when the SCK2 to SCK0 bits in SCKCR are set to 1, the operating mode changes to medium-speed mode as soon as the current bus cycle ends. In medium-speed mode, the CPU operates on the operating clock (/2, /4, /8, /16, or /32) specified by the SCK2 to SCK0 bits. The bus masters other than the CPU (DTC*) also operate in medium-speed mode. On-chip peripheral modules other than the bus masters always operate on the high-speed clock (). In medium-speed mode, a bus access is executed in the specified number of states with respect to the bus master operating clock. For example, if /4 is selected as the operating clock, on-chip memory is accessed in 4 states, and internal I/O registers in 8 states. Medium-speed mode is cleared by clearing all of bits SCK2 to SCK0 to 0. A transition is made to high-speed mode and medium-speed mode is cleared at the end of the current bus cycle. If a SLEEP instruction is executed when the SSBY bit in SBYCR is cleared to 0, and LSON bit in LPWRCR is cleared to 0, a transition is made to sleep mode. When sleep mode is cleared by an interrupt, medium-speed mode is restored. When the SLEEP instruction is executed with the SSBY bit = 1, LSON bit = 0, and PSS bit in TCSR_1 (WDT_1) = 0, operation shifts to the software standby mode. When software standby mode is cleared by an external interrupt, medium-speed mode is restored. When the RES pin is set low and medium-speed mode is cancelled, operation shifts to the reset state. The same applies in the case of a reset caused by overflow of the watchdog timer. When the STBY pin is driven low, a transition is made to hardware standby mode. Figure 22.2 shows the timing for transition to and clearance of medium-speed mode. Note: * Supported only by the H8S/2268 Group.
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Section 22 Power-Down Modes
Medium-speed mode
Internal clock , peripheral module clock
Bus master clock
Internal address bus
SBYCR
SBYCR
Internal write signal
Figure 22.2 Medium-Speed Mode Transition and Clearance Timing
22.3
22.3.1
Sleep Mode
Sleep Mode
When the SLEEP instruction is executed while the SBYCR SSBY bit = 0 and the LPWRCR LSON bit = 0, the CPU enters the sleep mode. In sleep mode, CPU operation stops but the contents of the CPU's internal registers are retained. Other peripheral modules do not stop. 22.3.2 Exiting Sleep Mode
Sleep mode is exited by any interrupt, or signals at the RES, or STBY pins. * Exiting Sleep Mode by Interrupts When an interrupt occurs, sleep mode is exited and interrupt exception processing starts. Sleep mode is not exited if the interrupt is disabled, or interrupts other than NMI are masked by the CPU. * Exiting Sleep Mode by RES pin Setting the RES pin level low selects the reset state. After the stipulated reset input duration, driving the RES pin high starts the CPU performing reset exception processing. * Exiting Sleep Mode by STBY Pin When the STBY pin level is driven low, a transition is made to hardware standby mode.
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Section 22 Power-Down Modes
22.4
22.4.1
Software Standby Mode
Software Standby Mode
A transition is made to software standby mode when the SLEEP instruction is executed while the SBYCR SSBY bit = 1 and the LPWRCR LSON bit = 0, and the TCSR_1 (WDT_1) PSS bit = 0. In this mode, the CPU, on-chip peripheral modules, and oscillator all stop. However, the contents of the CPU's internal registers, RAM data, and the states of on-chip peripheral modules other than the A/D converter, and the states of I/O ports are retained. In this mode the oscillator stops, and therefore power dissipation is significantly reduced. 22.4.2 Clearing Software Standby Mode
Software standby mode is cleared by an external interrupt (NMI pin, or pins IRQ0, IRQ1, IRQ3, IRQ4 , IRQ5*, WKP0 to WKP7), or by means of the RES pin or STBY pin. * Clearing with an interrupt When an NMI, or IRQ0, IRQ1, IRQ3, IRQ4, IRQ5*, or WKP0 to WKP7 interrupt request signal is input, clock oscillation starts, and after the elapse of the time set in bits STS2 to STS0 in SYSCR, stable clocks are supplied to the entire chip, software standby mode is cleared, and interrupt exception handling is started. When clearing software standby mode with an IRQ0, IRQ1, IRQ3, IRQ4, IRQ5*, or WKP0 to WKP7 interrupt, set the corresponding enable bit/pin function switching bit to 1 and ensure that no interrupt with a higher priority than interrupts IRQ0, IRQ1, IRQ3, IRQ4, IRQ5*, or WKP0 to WKP7 is generated. Software standby mode cannot be cleared if the interrupt has been masked on the CPU side or has been designated as a DTC activation source. * Clearing with the RES pin When the RES pin is driven low, clock oscillation is started. At the same time as clock oscillation starts, clocks are supplied to the entire chip. Note that the RES pin must be held low until clock oscillation settles. When the RES pin goes high, the CPU begins reset exception handling. * Clearing with the STBY pin When the STBY pin is driven low, a transition is made to hardware standby mode. Note: * Supported only by the H8S/2268 Group.
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Section 22 Power-Down Modes
22.4.3
Oscillation Settling Time after Clearing Software Standby Mode
Bits STS2 to STS0 in SBYCR should be set as described below. * Using a Crystal Oscillator Set bits STS2 to STS0 so that the standby time is at least 8 ms (the oscillation settling time). Table 22.3 shows the standby times for different operating frequencies and settings of bits STS2 to STS0. * Using an External Clock Any value can be set. Normally, minimum time is recommended. Note: The 16-state standby time cannot be used in the F-ZTAT versions; a standby time of 2048 states or longer should be used. Table 22.3 Oscillation Settling Time Settings
STS2 0 STS1 0 STS0 0 1 1 0 1 1 0 0 1 1 0 1 Standby Time 8192 states 16384 states 32768 states 65536 states 131072 states 262144 states 2048 states 16 states 20 MHz 0.41 0.82 1.6 3.3 6.6 13.1 0.10 0.8 16 MHz 0.51 1.0 2.0 4.1 8.2 16.4 0.13 1.0 13 MHz 0.63 1.3 2.5 5.0 10.1 20.2 0.16 1.2 10 MHz 0.82 1.6 3.3 6.6 13.1 26.2 0.20 1.6 8 MHz 6 MHz 4 MHz 2 MHz 1.0 2.0 4.1 8.2 16.4 32.8 0.26 2.0 1.4 2.7 5.5 10.9 21.8 43.7 0.34 2.7 2.0 4.1 8.2 16.4 32.8 65.5 0.51 4.0 4.1 8.2 16.4 32.8 65.5 131.1 1.0 8.0 s Unit ms
: Recommended time setting
22.4.4
Software Standby Mode Application Example
Figure 22.3 shows an example in which a transition is made to software standby mode at the falling edge on the NMI pin, and software standby mode is cleared at the rising edge on the NMI pin. In this example, an NMI interrupt is accepted with the NMIEG bit in SYSCR cleared to 0 (falling edge specification), then the NMIEG bit is set to 1 (rising edge specification), the SSBY bit is set to 1, and a SLEEP instruction is executed, causing a transition to software standby mode. Software standby mode is then cleared at the rising edge on the NMI pin.
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Section 22 Power-Down Modes
Oscillator
Internal clock
NMI
NMIEG
SSBY
NMI exception Software standby mode handling (power-down mode) NMIEG = 1 SSBY = 1 SLEEP instruction
Oscillation settling time tOSC2
NMI exception handling
Figure 22.3 Software Standby Mode Application Example
22.5
22.5.1
Hardware Standby Mode
Hardware Standby Mode
When the STBY pin is driven low, a transition is made to hardware standby mode from any mode. In hardware standby mode, all functions enter the reset state and stop operation, resulting in a significant reduction in power dissipation. As long as the prescribed voltage is supplied, on-chip RAM data is retained. I/O ports are set to the high-impedance state. Do not change the state of the mode pins (MD2, MD1) during hardware standby mode. 22.5.2 Clearing Hardware Standby Mode
Hardware standby mode is cleared by means of the STBY pin and the RES pin. When the STBY pin is driven high while the RES pin is low, the reset state is set and clock oscillation is started. Ensure that the RES pin is held low until the clock oscillator settles (at least tosc1 msthe oscillation settling timewhen using a crystal/ceramic oscillator). When the RES pin is subsequently driven high, a transition is made to the program execution state via the reset exception handling state.
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Section 22 Power-Down Modes
22.5.3
Hardware Standby Mode Timing
Figure 22.4 shows an example of hardware standby mode timing. When the STBY pin is driven low after the RES pin has been driven low, a transition is made to hardware standby mode. Hardware standby mode is cleared by driving the STBY pin high, waiting for the oscillation settling time, then changing the RES pin from low to high.
Oscillator
RES
STBY
Oscillation settling time tosc1
Reset exception handling
Figure 22.4 Hardware Standby Mode Timing
22.6
Module Stop Mode
Module stop mode can be set for individual on-chip peripheral modules. When the corresponding MSTP bit in MSTPCR is set to 1, module operation stops at the end of the bus cycle and a transition is made to module stop mode. The CPU continues operating independently. When the corresponding MSTP bit is cleared to 0, module stop mode is cleared and the module starts operating at the end of the bus cycle. In module stop mode, the internal states of modules other than the A/D converter are retained. After reset clearance, all modules other than DTC* are in module stop mode. When an on-chip peripheral module is in module stop mode, read/write access to its registers is disabled. Since the operations of the bus controller and I/O port are stopped when sleep mode is entered at the all-module stop state (MSTPCR=H'FFFFFFFF), power consumption can further be reduced. Note: * Supported only by the H8S/2268 Group.
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Section 22 Power-Down Modes
22.7
22.7.1
Watch Mode
Transition to Watch Mode
CPU operation makes a transition to watch mode when the SLEEP instruction is executed in highspeed mode or sub-active mode with SBYCR SSBY=1, LPWRCR DTON = 0, and TCSR_1 (WDT_1) PSS = 1. In watch mode, the CPU is stopped and peripheral modules other than WDT_1, TMR_4*, and LCD are also stopped. The contents of the CPU's internal registers, the data in internal RAM, and the statuses of the internal peripheral modules (excluding the A/D converter) and I/O ports are retained. To make a transition to watch mode, bits SCK2 to SCK0 in SCKCR must be set to 0. Note: * Supported only by the H8S/2268 Group. 22.7.2 Exiting Watch Mode
Watch mode is exited by any interrupt (WOVI1 interrupt, OVI4 to OVI7 interrupts*, NMI pin, or IRQ0, IRQ1, IRQ3, IRQ4, IRQ5*, or WKP0 to WKP7), or signals at the RES, or STBY pins. * Exiting Watch Mode by Interrupts When an interrupt occurs, watch mode is exited and a transition is made to high-speed mode or medium-speed mode when the LPWRCR LSON bit = 0 or to sub-active mode when the LSON bit = 1. When a transition is made to high-speed mode, a stable clock is supplied to all LSI circuits and interrupt exception processing starts after the time set in SBYCR STS2 to STS0 has elapsed. In the case of IRQ0, IRQ1, IRQ3, IRQ4, IRQ5*, and WKP0 to WKP7 interrupts, no transition is made from watch mode if the corresponding enable bit/pin function switching bit has been cleared to 0, and, in the case of interrupts from the internal peripheral modules, the interrupt enable register has been set to disable the reception of that interrupt, or is masked by the CPU. See section 22.4.3, Oscillation Settling Time after Clearing Software Standby Mode, for how to set the oscillation settling time when making a transition from watch mode to high-speed mode. * Exiting Watch Mode by RES pins For exiting watch mode by the RES pins, see section 22.4.2, Clearing Software Standby Mode. * Exiting Watch Mode by STBY pin When the STBY pin level is driven low, a transition is made to hardware standby mode. Note: * Supported only by the H8S/2268 Group.
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Section 22 Power-Down Modes
22.8
22.8.1
Sub-Sleep Mode
Transition to Sub-Sleep Mode
When the SLEEP instruction is executed with the SBYCR SSBY bit = 0, LPWRCR LSON bit = 1, and TCSR_1 (WDT_1) PSS bit = 1, CPU operation shifts to sub-sleep mode. In sub-sleep mode, the CPU is stopped. Peripheral modules other than TMR_0, TMR_1, TMR_2 to TMR_4*, WDT_0, WDT_1, and LCD are also stopped. The contents of the CPU's internal registers, the data in internal RAM, and the statuses of the internal peripheral modules (excluding the A/D converter) and I/O ports are retained. Note: * Supported only by the H8S/2268 Group. 22.8.2 Exiting Sub-Sleep Mode
Sub-sleep mode is exited by an interrupt (interrupts from internal peripheral modules, NMI pin, or IRQ0, IRQ1, IRQ3, IRQ4, IRQ5*, or WKP0 to WKP7), or signals at the RES or STBY pins. * Exiting Sub-Sleep Mode by Interrupts When an interrupt occurs, sub-sleep mode is exited and interrupt exception processing starts. In the case of IRQ0, IRQ1, IRQ3, IRQ4, IRQ5*, and WKP0 to WKP7 interrupts, sub-sleep mode is not cancelled if the corresponding enable bit/pin function switching bit has been cleared to 0, and, in the case of interrupts from the internal peripheral modules, the interrupt enable register has been set to disable the reception of that interrupt, or is masked by the CPU. * Exiting Sub-Sleep Mode by RES For exiting sub-sleep mode by the RES pins, see section 22.4.2, Clearing Software Standby Mode. * Exiting Sub-Sleep Mode by STBY Pin When the STBY pin level is driven low, a transition is made to hardware standby mode. Note: * Supported only by the H8S/2268 Group.
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Section 22 Power-Down Modes
22.9
22.9.1
Sub-Active Mode
Transition to Sub-Active Mode
When the SLEEP instruction is executed in high-speed mode with the SBYCR SSBY bit = 1, LPWRCR DTON bit = 1, LSON bit = 1, and TCSR_1 (WDT_1) PSS bit = 1, CPU operation shifts to sub-active mode. When an interrupt occurs in watch mode, and if the LSON bit of LPWRCR is 1, a transition is made to sub-active mode. And if an interrupt occurs in sub-sleep mode, a transition is made to sub-active mode. In sub-active mode, the CPU operates at low speed on the subclock, and the program is executed step by step. Peripheral modules other than PBC*, TMR_0, TMR_1, TMR_2 to TMR_4*, WDT_0, WDT_1, and LCD are also stopped. When operating the CPU in sub-active mode, the SCKCR SCK2 to SCK0 bits must be set to 0. Note: * Supported only by the H8S/2268 Group. 22.9.2 Exiting Sub-Active Mode
Sub-active mode is exited by the SLEEP instruction or the RES or STBY pins. * Exiting Sub-Active Mode by SLEEP Instruction When the SLEEP instruction is executed with the SBYCR SSBY bit = 1, LPWRCR DTON bit = 0, and TCSR_1 (WDT_1) PSS bit = 1, the CPU exits sub-active mode and a transition is made to watch mode. When the SLEEP instruction is executed with the SBYCR SSBY bit = 0, LPWRCR LSON bit = 1, and TCSR (WDT_1) PSS bit = 1, a transition is made to sub-sleep mode. Finally, when the SLEEP instruction is executed with the SBYCR SSBY bit = 1, LPWRCR DTON bit = 1, LSON bit = 0, and TCSR (WDT_1) PSS bit = 1, a direct transition is made to high-speed mode (SCK0 to SCK2 all 0). * Exiting Sub-Active Mode by RES Pins For exiting sub-active mode by the RES pins, see section 22.4.2, Clearing Software Standby Mode. * Exiting Sub-Active Mode by STBY Pin When the STBY pin level is driven low, a transition is made to hardware standby mode.
Rev. 4.00 Mar 21, 2006 page 566 of 654 REJ09B0071-0400
Section 22 Power-Down Modes
22.10
Direct Transitions
There are three modes, high-speed, medium-speed, and sub-active, in which the CPU executes programs. When a direct transition is made, there is no interruption of program execution when shifting between high-speed and sub-active modes. Direct transitions are enabled by setting the LPWRCR DTON bit to 1, then executing the SLEEP instruction. After a transition, direct transition interrupt exception processing starts. 22.10.1 Direct Transitions from High-Speed Mode to Sub-Active Mode Execute the SLEEP instruction in high-speed mode when the SBYCR SSBY bit = 1, LPWRCR LSON bit = 1, and DTON bit = 1, and TSCR_1 (WDT_1) PSS bit = 1 to make a transition to subactive mode. 22.10.2 Direct Transitions from Sub-Active Mode to High-Speed Mode Execute the SLEEP instruction in sub-active mode when the SBYCR SSBY bit = 1, LPWRCR LSON bit = 0, and DTON bit = 1, and TSCR_1 (WDT_1) PSS bit = 1 to make a direct transition to high-speed mode after the time set in SBYCR STS2 to STS0 has elapsed.
22.11
Usage Notes
22.11.1 I/O Port Status In software standby mode and watch mode, I/O port states are retained. Therefore, there is no reduction in current dissipation for the output current when a high-level signal is output. 22.11.2 Current Dissipation during Oscillation Settling Wait Period Current dissipation increases during the oscillation settling wait period. 22.11.3 DTC Module Stop (Supported Only by the H8S/2268 Group) Depending on the operating status of the DTC, the MSTPA6 bit may not be set to 1. Setting of the DTC module stop mode should be carried out only when the respective module is not activated. For details, refer to section 8, Data Transfer Controller (DTC).
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Section 22 Power-Down Modes
22.11.4 On-Chip Peripheral Module Interrupt * Module stop mode Relevant interrupt operations cannot be performed in module stop mode. Consequently, if module stop mode is entered when an interrupt has been requested, it will not be possible to clear the CPU interrupt source or the DTC* activation source. Interrupts should therefore be disabled before entering module stop mode. Note: Supported only by the H8S/2268 Group. * Subactive mode / Watch mode On-chip peripheral modules (DTC*, TPU, IIC) that stop operation in subactive mode cannot clear interrupts in subactive mode. Therefore, if subactive mode is entered when an interrupt is requested, CPU interrupt factors cannot be cleared. Interrupts should therefore before executing the SLEEP instruction and entering subactive or watch mode. Note: * Supported only by the H8S/2268 Group. 22.11.5 Writing to MSTPCR MSTPCR should only be written to by the CPU. 22.11.6 Entering Subactive/Watch Mode and DTC Module Stop (Supported Only by H8S/2268 Group) To enter subactive or watch mode, set DTC to module stop (write 1 to the MSTPA6 bit) and reading the MSTPA6 bit as 1 before transiting mode. After transiting from subactive mode to active mode, clear module stop. When DTC activation factor occurs in subactive mode, DTC is activated when module stop is cleared after active mode is entered.
Rev. 4.00 Mar 21, 2006 page 568 of 654 REJ09B0071-0400
Section 23 Power Supply Circuit
Section 23 Power Supply Circuit
This LSI has an internal power step-down circuit built into it. Using this circuit allows the internal power supply to be fixed at approximately 3.0 V without relaying on the power supply voltage connected to the external Vcc terminal. This means that, when used at an external power supply higher than 3.0 V, the current consumption value can be suppressed to largely the same value as that when used at approximately 3.0 V. If the external voltage is 3.0 V or less, the internal voltage will be largely consistent with the external voltage.
23.1
When Internal Power Step-Down Circuit Is Used
As shown in figure 23.1, an external power supply should be connected to the Vcc pin, using the shortest possible wiring, with a capacitance (H8S/2268 Group: 0.1 F/0.2 F and H8S/2264 Group: 0.2 F) between CVcc and Vss. Adding this external circuit makes the internal step-down circuit valid. Applying a power supply exceeding the absolute maximum rated value of 4.3 V to the CVcc terminal can permanently damage the LSI, so the power supply should not be connected to the CVcc terminal. The external power supply voltage connected to Vcc and the GND potential connected to Vss serve as the references for the input/output levels of the external circuit. For example, a "High" port input/output level will be the Vcc reference, and a "Low" level will be the Vss reference. The analog power supplies of the A/D converter, D/A converter*, and DTMF generation circuit* do not affect the internal step-down circuit. Note: * Supported only by the H8S/2268 Group.
Vcc Vcc 2.7 to 5.5 V (Vcc = 3.0 to 5.5 V for the F-ZTAT version) Step-down voltage circuit CVcc
Internal logic
Internal power supply Vss
Stabilized capacitance (H8S/2268 Group: 0.1 F/0.2 F and H8S/2264 Group: 0.2 F)
Figure 23.1 Power Supply Connections When Internal Power Supply Step-Down Circuit Is Used
PSCKT20A_000020020700
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Section 23 Power Supply Circuit
Rev. 4.00 Mar 21, 2006 page 570 of 654 REJ09B0071-0400
Section 24 List of Registers
Section 24 List of Registers
This section gives information on the on-chip I/O registers and is configured as described below. 1. Register Addresses (by functional module, in address order) Descriptions by functional module, in ascending order of addresses When registers consist of 16 bits, the addresses of the MSBs are given. Data bus width is given. The number of access states are given. 2. Register Bits Bit configurations of the registers are described in the same order as the Register Addresses (by functional module, in ascending order of addresses). Reserved bits are indicated by in the bit name. When registers consist of 16 or 32 bits, bits are described from the MSB side. 3. Register States in Each Operating Mode Register states are described in the same order as the Register Addresses (by functional module, in ascending order of addresses). The register states described are for the basic operating modes. If there is a specific reset for an on-chip module, refer to the section on that on-chip module.
Rev. 4.00 Mar 21, 2006 page 571 of 654 REJ09B0071-0400
Section 24 List of Registers
24.1
Register Addresses (by Function Module, in Address Order)
The data bus width indicates the numbers of bits by which the register is accessed. The number of access states indicates the number of states based on the specified reference clock.
Register Name DTC mode register A* DTC source address 4 register* DTC mode register B*
4 4
Abbreviation Bit No. MRA SAR MRB DAR
4
Address*
1
Module
Data Width 16/32* 2 16/32*
2
Access State 1 1 1 1 1 1 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
8 24 8 24 16 16 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
H'EBC0 to DTC H'EFBF DTC DTC DTC DTC DTC H'FC30 H'FC31 H'FC32 H'FC40 to H'FC53 H'FC60 H'FC68 H'FC69 H'FC70 H'FC71 H'FC72 H'FC73 H'FC74 H'FC75 H'FC76 H'FC77 LCD LCD LCD LCD
DTC destination address 4 register*
16/32* 2 16/32*
2
DTC transfer count register A* CRA 4 DTC transfer count register B* CRB LCD port control register LCD control register LCD control register 2 LCD RAM Module stop control register D 4 DTMF control register*
4 DTMF load register* 4 Timer control register_4* 4 Timer control register_5*
16/32* 2 16/32*
2
LPCR LCR LCR2 MSTPCRD DTCR DTLR TCR_4 TCR_5 TCR_6 TCR_7 TCNT_4(R)/ TLR_4(W) TCNT_5(R)/ TLR_5(W) TCNT_6(R)/ TLR_6(W) TCNT_7(R)/ TLR_7(W)
8/16 8/16 8/16 8/16
SYSTEM 8 DTMF DTMF TMR_4 TMR_4 TMR_4 TMR_4 TMR_4 TMR_4 TMR_4 TMR_4 8 8 8/16 8/16 8/16 8/16 8/16 8/16 8/16 8/16
Timer control register_6* 4 Timer control register_7*
4
Timer counter 4/Timer reload 4 register 4* Timer counter 5/Timer reload 4 register 5* Timer counter 6/Timer reload 4 register 6* Timer counter 7/Timer reload 4 register 7*
Rev. 4.00 Mar 21, 2006 page 572 of 654 REJ09B0071-0400
Section 24 List of Registers Data Width 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 Access State 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 2 2 2 2 2 2
Register Name Port H data direction register Port J data direction register Port K data direction register Port L data direction register
Abbreviation Bit No. PHDDR PJDDR PKDDR 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FC80 H'FC81 H'FC82 H'FC83 H'FC84 H'FC85 H'FC88 H'FC89 H'FC8A H'FC8B H'FC8C H'FC8D H'FC90 H'FC91 H'FC92 H'FC93 H'FC94 H'FC95 H'FC99 H'FC9F H'FCA0 H'FCA1 H'FDAC H'FDAD H'FDAE H'FDB4 H'FDB5 H'FDC0
1
Module PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT INT INT D/A D/A D/A IIC, FLASH IIC TMR_2
PLDDR *4 PMDDR Port M data direction register 4 Port N data direction register* PNDDR Port H data register Port J data register Port K data register Port L data register Port M data register 4 Port N data register* Port H register Port J register Port K register Port L register Port M register* 4 Port N register*
4
PHDR PJDR PKDR PLDR *4 PMDR PNDR PORTH PORTJ PORTK PORTL PORTM PORTN PJPCR WPCR IWPR IENR1 DADR_0 DADR_1 DACR SCRX DDCSWR *4 TCR_2
Port J pull-up MOS control register Wakeup control register Wakeup interrupt request register Interrupt enable register D/A data register_0 *4
4 D/A data register_1* 4 D/A control register*
Serial control register X DDC switch register Timer control register_2
Rev. 4.00 Mar 21, 2006 page 573 of 654 REJ09B0071-0400
Section 24 List of Registers Data Width 8 8 8 8/16 8/16 8/16 8/16 8/16 8/16 8 8 8 8 8 8 8 Access State 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Register Name Timer control register_3* Timer control/status 4 register_2* Timer control/status 4 register_3* Time constant register A_2* Time constant register A_3 Time constant register B_2 Time constant register B_3 4 Timer counter_2*
4 Timer counter_3* 4 4
Abbreviation Bit No. TCR_3 TCSR_2 TCSR_3 TCORA_2 TCORA_3 TCORB_2 TCORB_3 TCNT_2 TCNT_3 SMR_2 BRR_2 SCR_2 TDR_2 SSR_2 RDR_2 SCMR_2 SBYCR SYSCR SCKCR MDCR MSTPCRA MSTPCRB MSTPCRC LPWRCR SEMR_0
4
Address* H'FDC1 H'FDC2 H'FDC3 H'FDC4 H'FDC5 H'FDC6 H'FDC7 H'FDC8 H'FDC9 H'FDD0 H'FDD1 H'FDD2 H'FDD3 H'FDD4 H'FDD5 H'FDD6 H'FDE4 H'FDE5 H'FDE6 H'FDE7 H'FDE8 H'FDE9 H'FDEA H'FDEC H'FDF8 H'FE00 H'FE04 H'FE08
1
Module TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 SCI_2 SCI_2 SCI_2 SCI_2 SCI_2 SCI_2 SCI_2
8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 32 32 8
*4 *4 *4
Serial mode register_2 Bit rate register_2 Serial control register_2 Transmit data register_2 Serial status register_2 Receive data register_2 Smart card mode register_2 Standby control register System control register System clock control register Mode control register Module stop control register A Module stop control register B Module stop control register C Low power control register Serial expansion mode register_0 Break address register A* 4 Break address register B* Break control register A *4
SYSTEM 8 SYSTEM 8 SYSTEM 8 SYSTEM 8 SYSTEM 8 SYSTEM 8 SYSTEM 8 SYSTEM 8 SCI_0 PBC PBC PBC 8 8/16 8/16 8/16
BARA BARB BCRA
Rev. 4.00 Mar 21, 2006 page 574 of 654 REJ09B0071-0400
Section 24 List of Registers Data Width 8/16 8 8 8 8 8 Access State 2 2 2 2 2 2
Register Name Break control register B*
4
Abbreviation Bit No. BCRB ISCRH ISCRL IER ISR DTCER 8 8 8 8 8 8
Address* H'FE09 H'FE12 H'FE13 H'FE14 H'FE15 H'FE16 to H'FE1B, H'FE1E H'FE1F H'FE30 H'FE32 H'FE36 H'FE3E H'FE46 H'FEB0 H'FEB1 H'FEC0 H'FEC1 H'FEC2 H'FEC3 H'FEC4 H'FEC5 H'FEC6 H'FEC8 H'FEC9 H'FECA H'FECB H'FECC H'FECE H'FEDB
1
Module PBC INT INT INT INT DTC
IRQ sense control register H IRQ sense control register L IRQ enable register IRQ status register
4 DTC enable register*
DTC vector register*
4
DTVECR P1DDR P3DDR P7DDR PFDDR P3ODR TSTR TSYR IPRA IPRB IPRC IPRD IPRE IPRF IPRG IPRI IPRJ IPRK IPRL IPRM IPRO RAMER
8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
DTC PORT PORT PORT PORT PORT TPU TPU INT INT INT INT INT INT INT INT INT INT INT INT INT FLASH
8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Port 1 data direction register Port 3 data direction register Port 7 data direction register Port F data direction register Port 3 open drain control register Timer start register Timer synchro register
4 Interrupt priority register A* 4 Interrupt priority register B* 4 Interrupt priority register C*
Interrupt priority register D*
4
Interrupt priority register E 4 Interrupt priority register F* Interrupt priority register G 4 Interrupt priority register I*
*4 *4
4 Interrupt priority register J* 4 Interrupt priority register K* 4 Interrupt priority register L*
Interrupt priority register M* 4 Interrupt priority register O* RAM emulation register *4
4
Rev. 4.00 Mar 21, 2006 page 575 of 654 REJ09B0071-0400
Section 24 List of Registers Data Width 8 8 8 8 8 8 8 8 8 8 16 16 16 16 16 8 8 8 8 8 16 16 16 8 8 8 8 8 Access State 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Register Name Port 1 data register Port 3 data register Port 7 data register Port F data register
4 Timer control register_0* 4 Timer mode register_0*
Abbreviation Bit No. P1DR P3DR P7DR PFDR TCR_0 TMDR_0 8 8 8 8 8 8 8 8 8 8 16 16 16 16 16 8 8 8 8 8 16 16 16 8 8 8 8 8
Address* H'FF00 H'FF02 H'FF06 H'FF0E H'FF10 H'FF11 H'FF12 H'FF13 H'FF14 H'FF15 H'FF16 H'FF18 H'FF1A H'FF1C H'FF1E H'FF20 H'FF21 H'FF22 H'FF24 H'FF25 H'FF26 H'FF28 H'FF2A H'FF30 H'FF31 H'FF32 H'FF34 H'FF35
1
Module PORT PORT PORT PORT TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_1 TPU_1 TPU_1 TPU_1 TPU_1 TPU_1 TPU_1 TPU_1 TPU_2 TPU_2 TPU_2 TPU_2 TPU_2
4 Timer I/O control register H_0* TIORH_0 4 Timer I/O control register L_0* TIORL_0
Timer interrupt enable 4 register_0* Timer status register_0* 4 Timer counter_0*
4
TIER_0 TSR_0 TCNT_0 TGRA_0 TGRB_0 TGRC_0 TGRD_0 TCR_1 TMDR_1 TIOR_1 TIER_1 TSR_1 TCNT_1 TGRA_1 TGRB_1 TCR_2 TMDR_2 TIOR_2 TIER_2 TSR_2
4 Timer general register A_0* 4 Timer general register B_0*
Timer general register C_0* Timer general register D_0* Timer control register_1 Timer mode register_1 Timer I/O control register_1 Timer interrupt enable register_1 Timer status register_1 Timer counter_1 Timer general register A_1 Timer general register B_1 Timer control register_2 Timer mode register_2 Timer I/O control register_2 Timer interrupt enable register_2 Timer status register_2
4 4
Rev. 4.00 Mar 21, 2006 page 576 of 654 REJ09B0071-0400
Section 24 List of Registers Data Width 16 16 16 8 8 8 8 8/16 8/16 8/16 8/16 8/16 8/16 16 16 16 8 8 8 8 8 8 8 8 8 8 8 Access State 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Register Name Timer counter_2 Timer general register A_2 Timer general register B_2 Timer control register_0 Timer control register_1
Abbreviation Bit No. TCNT_2 TGRA_2 TGRB_2 TCR_0 TCR_1 16 16 16 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FF36 H'FF38 H'FF3A H'FF68 H'FF69 H'FF6A H'FF6B H'FF6C H'FF6D H'FF6E H'FF6F H'FF70 H'FF71
1
Module TPU_2 TPU_2 TPU_2 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1
Timer control/status register_0 TCSR_0 Timer control/status register_1 TCSR_1 Time constant register A_0 Time constant register A_1 Time constant register B_0 Time constant register B_1 Timer counter_0 Timer counter_1 TCORA_0 TCORA_1 TCORB_0 TCORB_1 TCNT_0 TCNT_1
Timer control/status register_0 TCSR_0 Timer counter_0 Reset control/status register Serial mode register_0 I C bus control register_0 Bit rate register_0 I C bus status register_0 Serial control register_0 Transmit data register_0 Serial status register_0 Receive data register_0 Smart card mode register_0
2 2 2
H'FF74(W) WDT_0 H'FF74(R) H'FF74(W) WDT_0 H'FF75(R) H'FF76(W) WDT_0 H'FF77(R) 3 H'FF78* SCI_0 3 H'FF78* IIC_0 H'FF79 H'FF79 *3 *3 SCI_0 IIC_0 SCI_0 SCI_0 SCI_0 SCI_0 SCI_0 IIC_0 IIC_0
3
TCNT_0 RSTCSR SMR_0 ICCR_0 BRR_0 ICSR_0 SCR_0 TDR_0 SSR_0 RDR_0 SCMR_0
H'FF7A H'FF7B H'FF7C H'FF7D
3 H'FF7E*
I C bus data register_0/Second ICDR_0/ slave address register_0 SARX_0 I C bus mode register_0/Slave ICMR_0/ address register_0 SAR_0
2
H'FF7E* H'FF7F
Rev. 4.00 Mar 21, 2006 page 577 of 654 REJ09B0071-0400
Section 24 List of Registers Data Width 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 16 16 8 8 8 Access State 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Register Name Serial mode register_1 I C bus control register_1 Bit rate register_1
4 I C bus status register_1* 2 2
Abbreviation Bit No. SMR_1 *4 ICCR_1 BRR_1 ICSR_1 SCR_1 TDR_1 SSR_1 RDR_1 SCMR_1 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FF80* H'FF80 H'FF81 H'FF82 H'FF83 H'FF84 H'FF85 H'FF86 H'FF86 H'FF87 H'FF90 H'FF91 H'FF92 H'FF93 H'FF94 H'FF95 H'FF96 H'FF97 H'FF98 H'FF99 *3 *3
3
1
Module SCI_1 IIC_1 SCI_1 IIC_1 SCI_1 SCI_1 SCI_1 SCI_1 SCI_1 IIC_1 IIC_1 A/D A/D A/D A/D A/D A/D A/D A/D A/D A/D
*3 *3
3 H'FF81*
Serial control register_1 Transmit data register_1 Serial status register_1 Receive data register_1 Smart card mode register_1
2
I C bus data register_1/Second ICDR_1/ 4 slave address register_1* SARX_1 I C bus mode register_1/Slave ICMR_1/ 4 address register_1* SAR_1 A/D data register AH A/D data register AL A/D data register BH A/D data register BL A/D data register CH A/D data register CL A/D data register DH A/D data register DL A/D control/status register A/D control register ADDRAH ADDRAL ADDRBH ADDRBL ADDRCH ADDRCL ADDRDH ADDRDL ADCSR ADCR
2
Timer control/status register_1 TCSR_1 Timer counter_1 Flash memory control 4 register 1* Flash memory control 4 register 2* Erase block register 1*
4
H'FFA2(W) WDT_1 H'FFA2(R) H'FFA2(W) WDT_1 H'FFA3(R) H'FFA8 H'FFA9 H'FFAA FLASH FLASH FLASH
TCNT_1 FLMCR1 FLMCR2 EBR1
Rev. 4.00 Mar 21, 2006 page 578 of 654 REJ09B0071-0400
Section 24 List of Registers Data Width 8 8 8 8 8 8 8 8 Access State 2 2 2 2 2 2 2 2
Register Name Erase block register 2*
4
Abbreviation Bit No. EBR2 FLPWCR PORT1 PORT3 PORT4 PORT7 PORT9 PORTF 8 8 8 8 8 8 8 8
Address* H'FFAB H'FFAC H'FFB0 H'FFB2 H'FFB3 H'FFB6 H'FFB8 H'FFBE
1
Module FLASH FLASH PORT PORT PORT PORT PORT PORT
Flash memory power control 4 register* Port 1 register Port 3 register Port 4 register Port 7 register Port 9 register Port F register
Notes: 1. Lower 16 bits of the address. 2. Allocated on the on-chip RAM. 32-bit bus when DTC accesses as register information, and 16-bit in other cases. 4 3. Part of registers SCI_0 and SCI_1 and part of registers IIC_0 and IIC_1* are allocated to the same address. Use the IICE bit of the serial control register X (SCRX) to select the register. 4. Supported only by the H8S/2268 Group.
Rev. 4.00 Mar 21, 2006 page 579 of 654 REJ09B0071-0400
Section 24 List of Registers
24.2
Register Name MRA*1 SAR*
1
Register Bits
Bit 7 SM1 Bit 6 SM0 Bit 5 DM1 Bit 4 DM0 Bit 3 MD1 Bit 2 MD0 Bit 1 DTS Bit 0 Sz Module DTC
MRB*1
1 DAR*
CHNE
DISEL
--
--
--
--
--
--
CRA*
1
CRB*
1
LPCR LCR LCR2 LCD RAM MSTPCRD DTCR*1 DTLR*1 TCR_4 TCR_5 *1 *1
DTS1 -- LCDAB Bit7 MSTPD7 DTEN -- ARSL ARSL ARSL ARSL
DTS0 PSW -- Bit6 MSTPD6 -- -- OVF OVF OVF OVF Bit6
CMX ACT HCKS*2 Bit5 MSTPD5 CLOE DTL5 OVIE OVIE OVIE OVIE Bit5
-- DISP SUPS*2 Bit4 MSTPD4 RWOE DTL4 -- -- -- -- Bit4
SGS3 CKS3 CDS3 Bit3 MSTPD3 CLF1 DTL3 -- -- -- -- Bit3
SGS2 CKS2 CDS2 Bit2 MSTPD2 CLF0 DTL2 CKS2 CKS2 CKS2 CKS2 Bit2
SGS1 CKS1 CDS1 Bit1 MSTPD1 RWF1 DTL1 CKS1 CKS1 CKS1 CKS1 Bit1
SGS0 CKS0 CDS0 Bit0 MSTPD0 RWF0 DTL0 CKS0 CKS0 CKS0 CKS0 Bit0
LCD
SYSTEM DTMF
TMR_4
TCR_6*1 TCR_7*1
TCNT_4(R)/ Bit7 1 TLR_4(W)* TCNT_5(R)/ Bit7 1 TLR_5(W)* TCNT_6(R)/ Bit7 TLR_6(W)*1 TCNT_7(R)/ Bit7 TLR_7(W)*1
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Rev. 4.00 Mar 21, 2006 page 580 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name PHDDR PJDDR PKDDR PLDDR
1 PMDDR*
Bit 7 -- PJ7DDR PK7DDR PL7DDR PM7DDR PN7DDR -- PJ7DR PK7DR PL7DR *1 PM7DR PN7DR PH7 PJ7 PK7 PL7 PM7 PN7 PJ7PCR WPC7 IWPF7 IENWP Bit7 Bit7 DAOE1 --
Bit 6 -- PJ6DDR PK6DDR PL6DDR PM6DDR PN6DDR -- PJ6DR PK6DR PL6DR PM6DR PN6DR -- PJ6 PK6 PL6 PM6 PN6 PJ6PCR WPC6 IWPF6 -- Bit6 Bit6 DAOE0 IICX1 *2
Bit 5 -- PJ5DDR PK5DDR PL5DDR PM5DDR PN5DDR -- PJ5DR PK5DR PL5DR PM5DR PN5DR -- PJ5 PK5 PL5 PM5 PN5 PJ5PCR WPC5 IWPF5 -- Bit5 Bit5 DAE IICX0
Bit 4 -- PJ4DDR PK4DDR PL4DDR PM4DDR PN4DDR -- PJ4DR PK4DR PL4DR PM4DR PN4DR -- PJ4 PK4 PL4 PM4 PN4 PJ4PCR WPC4 IWPF4 -- Bit4 Bit4 -- IICE
Bit 3 PH3DDR PJ3DDR PK3DDR PL3DDR PM3DDR PN3DDR PH3DR PJ3DR PK3DR PL3DR PM3DR PN3DR PH3 PJ3 PK3 PL3 PM3 PN3 PJ3PCR WPC3 IWPF3 -- Bit3 Bit3 -- FLSHE *1
Bit 2 PH2DDR PJ2DDR PK2DDR PL2DDR PM2DDR PN2DDR PH2DR PJ2DR PK2DR PL2DR PM2DR PN2DR PH2 PJ2 PK2 PL2 PM2 PN2 PJ2PCR WPC2 IWPF2 -- Bit2 Bit2 -- --
Bit 1 PH1DDR PJ1DDR PK1DDR PL1DDR PM1DDR PN1DDR PH1DR PJ1DR PK1DR PL1DR PM1DR PN1DR PH1 PJ1 PK1 PL1 PM1 PN1 PJ1PCR WPC1 IWPF1 -- Bit1 Bit1 -- --
Bit 0 PH0DDR PJ0DDR PK0DDR PL0DDR PM0DDR PN0DDR PH0DR PJ0DR PK0DR PL0DR PM0DR PN0DR PH0 PJ0 PK0 PL0 PM0 PN0 PJ0PCR WPC0 IWPF0 -- Bit0 Bit0 -- --
Module PORT
PNDDR*1 PHDR PJDR PKDR PLDR PMDR
1 PNDR*
PORTH PORTJ PORTK PORTL PORTM*1 PORTN PJPCR WPCR IWPR IENR1 DADR_0*1 DADR_1*1 DACR*1 SCRX *1
INT
D/A
IIC, FLASH
DDCSWR TCR_2*1
1 TCR_3*
-- CMIEB CMIEB CMFB
-- CMIEA CMIEA CMFA
-- OVIE OVIE OVF
-- CCLR1 CCLR1 --
CLR3 CCLR0 CCLR0 OS3
CLR2 CKS2 CKS2 OS2
CLR1 CKS1 CKS1 OS1
CLR0 CKS0 CKS0 OS0
IIC TMR_2 TMR_3 TMR_2
TCSR_2*1
Rev. 4.00 Mar 21, 2006 page 581 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name TCSR_3 *1 *1 *1 Bit 7 CMFB Bit7 Bit7 Bit 6 CMFA Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 CHR BLK Bit6 RIE Bit6 RDRF RDRF Bit6 -- STS2 -- -- -- MSTPA6 MSTPB6 MSTPC6 LSON -- -- BAA22 BAA14 BAA6 Bit 5 OVF Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 PE PE Bit5 TE Bit5 ORER ORER Bit5 -- STS1 INTM1 -- -- MSTPA5 MSTPB5 MSTPC5 NESEL -- -- BAA21 BAA13 BAA5 Bit 4 -- Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 O/E O/E Bit4 RE Bit4 FER ERS Bit4 -- STS0 INTM0 -- -- MSTPA4 MSTPB4 MSTPC4 SUBSTP -- -- BAA20 BAA12 BAA4 Bit 3 OS3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 STOP BCP1 Bit3 MPIE Bit3 PER PER Bit3 SDIR -- NMIEG -- -- MSTPA3 MSTPB3 MSTPC3 RFCUT ABCS -- BAA19 BAA11 BAA3 Bit 2 OS2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 MP BCP0 Bit2 TEIE Bit2 TEND TEND Bit2 SINV -- -- SCK2 MDS2 MSTPA2 MSTPB2 MSTPC2 -- ACS2 -- BAA18 BAA10 BAA2 Bit 1 OS1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 CKS1 CKS1 Bit1 CKE1 Bit1 MPB MPB Bit1 -- -- -- SCK1 MDS1 MSTPA1 MSTPB1 MSTPC1 STC1 ACS1 -- BAA17 BAA9 BAA1 Bit 0 OS0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 CKS0 CKS0 Bit0 CKE0 Bit0 MPBT MPBT Bit0 SMIF -- -- SCK0 -- MSTPA0 MSTPB0 MSTPC0 STC0 ACS0 -- BAA16 BAA8 BAA0 SCI_0 PBC SYSTEM Module TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 SCI_2
TCORA_2 TCORA_3
1 TCORB_2* Bit7 1 TCORB_3* Bit7
TCNT_2*1 TCNT_3*1 SMR_2 SMR_2 BRR_2 SCR_2 TDR_2 SSR_2 SSR_2 RDR_2 SCMR_2 SBYCR SYSCR SCKCR MDCR MSTPCRA MSTPCRB MSTPCRC LPWRCR SEMR0 BARA *1
Bit7 Bit7 C/A GM Bit7 TIE Bit7 TDRE TDRE Bit7 -- SSBY -- -- -- MSTPA7 MSTPB7 MSTPC7 DTON -- -- BAA23 BAA15 BAA7
Rev. 4.00 Mar 21, 2006 page 582 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name BARB *1 Bit 7 -- BAB23 BAB15 BAB7
1 BCRA*
Bit 6 -- BAB22 BAB14 BAB6 CDA CDB -- IRQ3SCA -- -- DTCE6 DTVEC6 P16DDR -- P76DDR -- -- -- -- IPR6 IPR6 -- IPR6 IPR6 IPR6 IPR6 IPR6 -- IPR6 IPR6
Bit 5 -- BAB21 BAB13 BAB5 BAMRA2 BAMRB2 -- -- IRQ5E* IRQ5F
2
Bit 4 -- BAB20 BAB12 BAB4 BAMRA1 BAMRB1 -- -- IRQ4E IRQ4F DTCE4 DTVEC4 P14DDR P34DDR P74DDR -- P34ODR -- -- IPR4 IPR4 -- IPR4 IPR4 IPR4 IPR4 IPR4 -- IPR4 IPR4
Bit 3 -- BAB19 BAB11 BAB3 BAMRA0 BAMRB0
Bit 2 -- BAB18 BAB10 BAB2 CSELA1 CSELB1
Bit 1 -- BAB17 BAB9 BAB1 CSELA0 CSELB0
Bit 0 -- BAB16 BAB8 BAB0 BIEA BIEB IRQ4SCA IRQ0SCA IRQ0E IRQ0F DTCE0 DTVEC0 P10DDR P30DDR P70DDR -- P30ODR CST0*2 SYNC0 IPR0 IPR0 IPR0 -- IPR0 IPR0 -- IPR0 IPR0 IPR0 IPR0 *2
Module PBC
CMFA CMFB -- IRQ3SCB -- --
BCRB*1 ISCRH ISCRL IER ISR DTCER *1
IRQ5SCB*2 IRQ5SCA*2 IRQ4SCB IRQ1SCB IRQ3E IRQ3F DTCE3 DTVEC3 P13DDR P33DDR P73DDR PF3DDR P33ODR -- -- -- -- -- -- -- -- -- -- -- -- -- IRQ1SCA -- -- DTCE2 DTVEC2 P12DDR P32DDR P72DDR -- P32ODR CST2 SYNC2 IPR2 IPR2 IPR2 -- IPR2 IPR2 -- IPR2 IPR2 IPR2 IPR2 IRQ0SCB IRQ1E IRQ1F DTCE1 DTVEC1 P11DDR P31DDR P71DDR -- P31ODR CST1 SYNC1 IPR1 IPR1 IPR1 -- IPR1 IPR1 -- IPR1 IPR1 IPR1 IPR1
INT
*2
DTCE7 SWDTE P17DDR -- P77DDR -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
DTCE5 DTVEC5 P15DDR P35DDR P75DDR -- P35ODR -- -- IPR5 IPR5 -- IPR5 IPR5 IPR5 IPR5 IPR5 -- IPR5 IPR5
DTC
1 DTVECR*
P1DDR P3DDR P7DDR PFDDR P3ODR TSTR TSYR IPRA*1 IPRB*1 IPRC *1 IPRD *1 IPRE*1 IPRF*1 IPRG IPRI *1
PORT
TPU
INT
*1
IPRJ *1 IPRK*1 IPRL*1
Rev. 4.00 Mar 21, 2006 page 583 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name IPRM IPRO *1 Bit 7 -- -- *1 -- P17DR -- P77DR --
1
Bit 6 IPR6 IPR6 -- P16DR -- P76DR -- CCLR1 -- IOB2 IOD2 -- -- Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 CCLR1 -- IOB2 -- -- Bit14 Bit6
Bit 5 IPR5 IPR5 -- P15DR P35DR P75DR -- CCLR0 BFB IOB1 IOD1 -- -- Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 CCLR0 -- IOB1 TCIEU *2
Bit 4 IPR4 IPR4 -- P14DR P34DR P74DR -- CKEG1 BFA IOB0 IOD0 TCIEV TCFV Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 CKEG1 -- IOB0 TCIEV TCFV Bit12 Bit4
Bit 3 -- -- RAMS P13DR P33DR P73DR PF3DR CKEG0 MD3 IOA3 IOC3 TGIED TGFD Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 CKEG0 MD3 IOA3 -- -- Bit11 Bit3
Bit 2 IPR2 -- RAM2 P12DR P32DR P72DR -- TPSC2 MD2 IOA2 IOC2 TGIEC TGFC Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 TPSC2 MD2 IOA2 -- -- Bit10 Bit2
Bit 1 IPR1 -- RAM1 P11DR P31DR P71DR -- TPSC1 MD1 IOA1 IOC1 TGIEB TGFB Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 TPSC1 MD1 IOA1 TGIEB TGFB Bit9 Bit1
Bit 0 IPR0 -- RAM0 P10DR P30DR P70DR -- TPSC0 MD0 IOA0 IOC0 TGIEA TGFA Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 TPSC0 MD0 IOA0 TGIEA TGFA Bit8 Bit0
Module INT
*1
RAMER P1DR P3DR P7DR PFDR
FLASH PORT
TCR_0*
CCLR2 -- IOB3 IOD3 TTGE -- Bit15 Bit7
TPU_0
TMDR_0
*1 *1
TIORH_0 TIORL_0
*1
1 TIER_0* 1 TSR_0*
TCNT_0*1
TGRA_0*1
Bit15 Bit7
TGRB_0
*1
Bit15 Bit7
TGRC_0*1
Bit15 Bit7
TGRD_0*1
Bit15 Bit7
TCR_1 TMDR_1 TIOR_1 TIER_1 TSR_1 TCNT_1
-- -- IOB3 TTGE TCFD*2 Bit15 Bit7
TPU_1
TCFU*2 Bit13 Bit5
Rev. 4.00 Mar 21, 2006 page 584 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name TGRA_1 Bit 7 Bit15 Bit7 TGRB_1 Bit15 Bit7 TCR_2 TMDR_2 TIOR_2 TIER_2 TSR_2 TCNT_2 -- -- IOB3 TTGE TCFD Bit15 Bit7 TGRA_2 Bit15 Bit7 TGRB_2 Bit15 Bit7 TCR_0 TCR_1 TCSR_0 TCSR_1 TCORA_0 TCORA_1 TCORB_0 TCORB_1 TCNT_0 TCNT_1 TCSR_0 TCNT_0 RSTCSR SMR_0 SMR_0 CMIEB CMIEB CMFB CMFB Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 OVF Bit7 WOVF C/A GM *2 Bit 6 Bit14 Bit6 Bit14 Bit6 CCLR1 -- IOB2 -- -- Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 CMIEA CMIEA CMFA CMFA Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 WT/IT Bit6 RSTE CHR BLK Bit 5 Bit13 Bit5 Bit13 Bit5 CCLR0 -- IOB1 TCIEU* TCFU Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 OVIE OVIE OVF OVF Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 TME Bit5 -- PE PE
2
Bit 4 Bit12 Bit4 Bit12 Bit4 CKEG1 -- IOB0 TCIEV TCFV Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 CCLR1 CCLR1 ADTE -- Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 -- Bit4 -- O/E O/E
Bit 3 Bit11 Bit3 Bit11 Bit3 CKEG0 MD3 IOA3 -- -- Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 CCLR0 CCLR0 OS3 OS3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 -- Bit3 -- STOP BCP1
Bit 2 Bit10 Bit2 Bit10 Bit2 TPSC2 MD2 IOA2 -- -- Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 CKS2 CKS2 OS2 OS2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 CKS2 Bit2 -- MP BCP0
Bit 1 Bit9 Bit1 Bit9 Bit1 TPSC1 MD1 IOA1 TGIEB TGFB Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 CKS1 CKS1 OS1 OS1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 CKS1 Bit1 -- CKS1 CKS1
Bit 0 Bit8 Bit0 Bit8 Bit0 TPSC0 MD0 IOA0 TGIEA TGFA Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 CKS0 CKS0 OS0 OS0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 CKS0 Bit0 -- CKS0 CKS0
Module TPU_1
TPU_2
*2
TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 WDT_0
SCI_0
Rev. 4.00 Mar 21, 2006 page 585 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name ICCR_0 BRR_0 ICSR_0 SCR_0 TDR_0 SSR_0 SSR_0 RDR_0 SCMR_0 ICDR_0/ SARX_0 ICMR_0/ SAR_0 SMR_1 SMR_1 ICCR_1 BRR_1 ICSR_1*1 SCR_1 TDR_1 SSR_1 SSR_1 RDR_1 SCMR_1 ICDR_1/ SARX_1* ICMR_1/ SAR_1*1 ADDRAH ADDRAL ADDRBH ADDRBL
1
Bit 7 ICE Bit7 ESTP TIE Bit7 TDRE TDRE Bit7 -- ICDR7/ SVAX6 MLS/ SVA6 C/A GM *1 ICE Bit7 ESTP TIE Bit7 TDRE TDRE Bit7 -- ICDR7/ SVAX6 MLS/ SVA6 AD9 AD1 AD9 AD1
Bit 6 IEIC Bit6 STOP RIE Bit6 RDRF RDRF Bit6 -- ICDR6/ SVAX5 WAIT/ SVA5 CHR BLK IEIC Bit6 STOP RIE Bit6 RDRF RDRF Bit6 -- ICDR6/ SVAX5 WAIT/ SVA5 AD8 AD0 AD8 AD0
Bit 5 MST Bit5 IRTR TE Bit5 ORER ORER Bit5 -- ICDR5/ SVAX4 CKS2/ SVA4 PE PE MST Bit5 IRTR TE Bit5 ORER ORER Bit5 -- ICDR5/ SVAX4 CKS2/ SVA4 AD7 -- AD7 --
Bit 4 TRS Bit4 AASX RE Bit4 FER ERS Bit4 -- ICDR4/ SVAX3 CKS1/ SVA3 O/E O/E TRS Bit4 AASX RE Bit4 FER ERS Bit4 -- ICDR4/ SVAX3 CKS1/ SVA3 AD6 -- AD6 --
Bit 3 ACKE Bit3 AL MPIE Bit3 PER PER Bit3 SDIR ICDR3/ SVAX2 CKS0/ SVA2 STOP BCP1 ACKE Bit3 AL MPIE Bit3 PER PER Bit3 SDIR ICDR3/ SVAX2 CKS0/ SVA2 AD5 -- AD5 --
Bit 2 BBSY Bit2 AAS TEIE Bit2 TEND TEND Bit2 SINV ICDR2/ SVAX1 BC2/ SVA1 MP BCP0 BBSY Bit2 AAS TEIE Bit2 TEND TEND Bit2 SINV ICDR2/ SVAX1 BC2/ SVA1 AD4 -- AD4 --
Bit 1 IRIC Bit1 ADZ CKE1 Bit1 MPB MPB Bit1 -- ICDR1/ SVAX0 BC1/ SVA0 CKS1 CKS1 IRIC Bit1 ADZ CKE1 Bit1 MPB MPB Bit1 -- ICDR1/ SVAX0 BC1/ SVA0 AD3 -- AD3 --
Bit 0 SCP Bit0 ACKB CKE0 Bit0 MPBT MPBT Bit0 SMIF ICDR0/ FSX BC0/ FS CKS0 CKS0 SCP Bit0 ACKB CKE0 Bit0 MPBT MPBT Bit0 SMIF
Module IIC_0 SCI_0 IIC_0 SCI_0
IIC_0
SCI_1
IIC_1 SCI_1 IIC_1 SCI_1
ICDR0/FSX IIC_1
BC0/FS
AD2 -- AD2 --
A/D
Rev. 4.00 Mar 21, 2006 page 586 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name ADDRCH ADDRCL ADDRDH ADDRDL ADCSR ADCR TCSR_1 TCNT_1 FLMCR1 * FLMCR2 EBR1 *1
1
Bit 7 AD9 AD1 AD9 AD1 ADF TRGS1 OVF Bit7 FWE FLER EB7 -- PDWND P17 -- P47 P77 P97 --
Bit 6 AD8 AD0 AD8 AD0 ADIE TRGS0 WT/IT Bit6 SWE1 -- EB6 -- -- P16 -- P46 P76 P96 --
Bit 5 AD7 -- AD7 -- ADST -- TME Bit5 ESU1 -- EB5 -- -- P15 P35 P45 P75 -- --
Bit 4 AD6 -- AD6 -- SCAN -- PSS Bit4 PSU1 -- EB4 -- -- P14 P34 P44 P74 -- --
Bit 3 AD5 -- AD5 -- CH3 CKS1 RST/NMI Bit3 EV1 -- EB3 EB11 -- P13 P33 P43 P73 -- PF3
Bit 2 AD4 -- AD4 -- CH2 CKS0 CKS2 Bit2 PV1 -- EB2 EB10 -- P12 P32 P42 P72 -- --
Bit 1 AD3 -- AD3 -- CH1 -- CKS1 Bit1 E1 -- EB1 EB9 -- P11 P31 P41 P71 -- --
Bit 0 AD2 -- AD2 -- CH0 -- CKS0 Bit0 P1 -- EB0 EB8 -- P10 P30 P40 P70 -- --
Module A/D
WDT_1
FLASH
*1
1 EBR2* 1 FLPWCR*
PORT1 PORT3 PORT4 PORT7 PORT9 PORTF
PORT
Notes: 1. Supported only by the H8S/2268 Group. 2. Reserved in the H8S/2264 Group.
Rev. 4.00 Mar 21, 2006 page 587 of 654 REJ09B0071-0400
Section 24 List of Registers
24.3
Register Name MRA* SAR* MRB* DAR* CRA* CRB* LPCR LCR LCR2 LCD RAM
Register States in Each Operating Mode
Reset -- -- -- -- -- -- High- Mediumspeed speed Sleep -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Module Stop -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Watch -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Subactive -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Subsleep -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Software Hardware Standby Standby Module -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Initialized LCD Initialized Initialized -- Initialized SYSTEM Initialized DTMF Initialized Initialized TMR_4 Initialized Initialized Initialized Initialized DTC
Initialized -- Initialized -- Initialized -- -- --
MSTPCRD Initialized -- DTCR* DTLR* TCR_4* TCR_5* TCR_6* TCR_7* TCNT_4/ TLR_4* TCNT_5/ TLR_5* TCNT_6/ TLR_6* TCNT_7/ TLR_7* PHDDR PJDDR PKDDR PLDDR PMDDR* Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
Initialized --
--
--
--
--
--
--
--
Initialized
Initialized --
--
--
--
--
--
--
--
Initialized
Initialized --
--
--
--
--
--
--
--
Initialized
Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
-- -- -- -- --
-- -- -- -- --
-- -- -- -- --
-- -- -- -- --
-- -- -- -- --
-- -- -- -- --
-- -- -- -- --
Initialized PORT Initialized Initialized Initialized Initialized
Rev. 4.00 Mar 21, 2006 page 588 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name PNDDR* PHDR PJDR PKDR PLDR PMDR* PNDR* PORTH PORTJ PORTK PORTL PORTM* PORTN* PJPCR WPCR IWPR IENR1 DADR_0* DADR_1* DACR SCRX Reset High- Mediumspeed speed Sleep -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Module Stop -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Watch -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Subactive -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Subsleep -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Software Hardware Standby Standby Module -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Initialized PORT Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized INT Initialized Initialized D/A Initialized Initialized Initialized IIC, FLASH DDCSWR TCR_2* TCR_3* TCSR_2* TCSR_3* Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Initialized IIC Initialized TMR_2 Initialized TMR_3 Initialized TMR_2 Initialized TMR_3 Initialized TMR_2 Initialized TMR_3 Initialized TMR_2 Initialized TMR_3
Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
TCORA_2* Initialized -- TCORA_3* Initialized -- TCORB_2* Initialized -- TCORB_3* Initialized --
Rev. 4.00 Mar 21, 2006 page 589 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name TCNT_2* TCNT_3* SMR_2 BRR_2 SCR_2 TDR_2 SSR_2 RDR_2 SCMR_2 SBYCR SYSCR SCKCR MDCR Reset High- Mediumspeed speed Sleep -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Module Stop -- -- -- -- -- Watch -- -- -- -- -- Subactive -- -- -- -- -- Subsleep -- -- -- -- -- Software Hardware Standby Standby Module -- -- -- -- -- Initialized TMR_2 Initialized TMR_3 Initialized SCI_2 Initialized Initialized
Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Initialized Initialized SYSTEM Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized SCI_0 Initialized PBC Initialized Initialized Initialized Initialized INT Initialized Initialized Initialized Initialized DTC Initialized Initialized PORT Initialized Initialized
MSTPCRA Initialized -- MSTPCRB Initialized -- MSTPCRC Initialized -- LPWRCR SEMR_0 BARA* BARB* BCRA* BCRB* ISCRH ISCRL IER ISR DTCER* Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
DTVECR* Initialized -- P1DDR P3DDR P7DDR Initialized -- Initialized -- Initialized --
Rev. 4.00 Mar 21, 2006 page 590 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name PFDDR P3ODR TSTR TSYR IPRA* IPRB* IPRC * IPRD * IPRE* IPRF* IPRG* IPRI* IPRJ * IPRK* IPRL* IPRM* IPRO* RAMER* P1DR P3DR P7DR PFDR TCR_0* TMDR_0 * Reset High- Mediumspeed speed Sleep -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Module Stop -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Watch -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Subactive -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Subsleep -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Software Hardware Standby Standby Module -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Initialized PORT Initialized Initialized TPU Initialized Initialized INT Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized FLASH Initialized PORT Initialized Initialized Initialized Initialized TPU_0 Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized
Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
TIORH_0 * Initialized -- TIORL_0* TIER_0* TSR_0* TCNT_0* TGRA_0* TGRB_0* Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
Rev. 4.00 Mar 21, 2006 page 591 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name TGRC_0* TGRD_0* TCR_1 TMDR_1 TIOR_1 TIER_1 TSR_1 TCNT_1 TGRA_1 TGRB_1 TCR_2 TMDR_2 TIOR_2 TIER_2 TSR_2 TCNT_2 TGRA_2 TGRB_2 TCR_0 TCR_1 TCSR_0 TCSR_1 Reset High- Mediumspeed speed Sleep -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Module Stop -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Watch -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Subactive -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Subsleep -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Software Hardware Standby Standby Module -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Initialized TPU_0 Initialized Initialized TPU_1 Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized TPU_2 Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized TMR_0 Initialized TMR_1 Initialized TMR_0 Initialized TMR_1 Initialized TMR_0 Initialized TMR_1 Initialized TMR_0 Initialized TMR_1 Initialized TMR_0 Initialized TMR_1 Initialized WDT_0 Initialized Initialized
Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
TCORA_0 Initialized -- TCORA_1 Initialized -- TCORB_0 Initialized -- TCORB_1 Initialized -- TCNT_0 TCNT_1 TCSR_0 TCNT_0 RSTCSR Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
Rev. 4.00 Mar 21, 2006 page 592 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name SMR_0 ICCR_0 BRR_0 ICSR_0 SCR_0 TDR_0 SSR_0 RDR_0 SCMR_0 ICDR_0/ SARX_0 ICMR_0/ SAR_0 SMR_1 ICCR_1 * BRR_1 ICSR_1* SCR_1 TDR_1 SSR_1 RDR_1 SCMR_1 ICDR_1/ SARX_1* ICMR_1/ SAR_1* ADDRAH ADDRAL ADDRBH ADDRBL ADDRCH ADDRCL Initialized -- -- -- -- -- -- -- -- Initialized Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Initialized SCI_1 Initialized IIC_1 Initialized SCI_1 Initialized IIC_1 Initialized SCI_1 Initialized -- -- -- -- -- -- -- -- Initialized Reset High- Mediumspeed speed Sleep -- -- -- -- -- - - - -- -- -- -- -- -- -- - - - -- -- Module Stop -- -- -- -- -- Watch -- -- -- -- -- Subactive -- -- -- -- -- Subsleep -- -- -- -- -- Software Hardware Standby Standby Module -- -- -- -- -- Initialized SCI_0 Initialized IIC_0 Initialized SCI_0 Initialized IIC_0 Initialized SCI_0
Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized - Initialized - Initialized - Initialized -- Initialized --
Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized -- -- -- -- -- -- -- -- -- -- Initialized Initialized IIC_0
Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized -- -- -- -- -- -- -- -- -- -- Initialized Initialized IIC_1
Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
-- -- -- -- -- --
-- -- -- -- -- --
Initialized Initialized Initialized Initialized Initialized Initialized A/D Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized
Rev. 4.00 Mar 21, 2006 page 593 of 654 REJ09B0071-0400
Section 24 List of Registers
Register Name ADDRDH ADDRDL ADCSR ADCR TCSR_1 TCNT_1 FLMCR1 * FLMCR2 * EBR1* EBR2* Reset High- Mediumspeed speed Sleep -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Module Stop Watch Subactive Subsleep Software Hardware Standby Standby Module
Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
Initialized Initialized Initialized Initialized Initialized Initialized A/D Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Initialized WDT_1 Initialized
Initialized Initialized FLASH Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized -- -- -- -- -- -- Initialized PORT Initialized Initialized Initialized Initialized Initialized
FLPWCR* Initialized -- PORT1 PORT3 PORT4 PORT7 PORT9 PORTF Initialized -- Initialized -- Initialized -- Initialized -- Initialized -- Initialized --
Notes:
-- is not initialized. * Supported only by the H8S/2268 Group.
Rev. 4.00 Mar 21, 2006 page 594 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Section 25 Electrical Characteristics
25.1 Power Supply Voltage and Operating Frequency Range
Power supply voltage and operating frequency ranges (shaded areas) are shown in figure 25.1.
Condition A (F-ZTAT version): Vcc = 3.0 to 5.5 V, AVcc = 2.7 to 5.5 V, Vref = 2.7 V to AVcc, Vss = AVss = 0 V,
= 32.768 kHz, 2 to 13.5 MHz, Ta = -20 to +75 (regular specification),
Ta = -40 to + 85 (wide range specification) Condition B (masked ROM version): Vcc = 2.7 to 5.5 V, AVcc = 2.7 to 5.5 V, Vref = 2.7 V to AVcc, Vss = AVss = 0 V,
= 32.768 kHz, 2 to 13.5 MHz, Ta = -20 to +75 (regular specification),
Condition C (F-ZTAT version): Ta = -40 to + 85 (wide range specification) Vcc = 4.0 to 5.5 V, AVcc = 4.0 to 5.5 V, Vref = 4.0 V to AVcc, Vss = AVss = 0 V,
= 32.768 kHz, 10 to 20.5 MHz, Ta = -20 to +75 (regular specification),
Ta = -40 to + 85 (wide range specification) Condition D (masked ROM version): Vcc = 4.0 to 5.5 V, AVcc = 4.0 to 5.5 V, Vref = 4.0 V to AVcc, Vss = AVss = 0 V,
= 32.768 kHz, 10 to 20.5 MHz, Ta = -20 to +75 (regular specification),
Ta = -40 to +85 (wide range specification) (1) Power supply voltage and range of oscillation frequency (condition A) f (MHz) f (kHz) System clock 20.5 32.768 13.5
Sub clock
2.0 0 2.7 3.0 4.0 5.5 Vcc (V) Active (high-speed/medium-speed) mode Sleep mode 0 2.7 3.0 AII operating modes 4.0 5.5 Vcc (V)
(2) Power supply voltage and range of oscillation frequency (condition B) f (MHz) 20.5 13.5 System clock f (kHz) 32.768 Sub clock
2.0 0 2.7 3.0 4.0 5.5 Vcc (V) Active (high-speed/medium-speed) mode Sleep mode 0 2.7 3.0 AII operating modes 4.0 5.5 Vcc (V)
Figure 25.1 Power Supply Voltage and Operating Ranges (1)
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Section 25 Electrical Characteristics
(3) Power supply voltage and range of oscillation frequency (condition C and D) f (kHz) f (MHz) System clock 20.5 32.768 13.5 10.0
Sub clock
2.0 0 2.7 3.0 4.0 5.5 Vcc (V) Active (high-speed/medium-speed) mode Sleep mode 0 2.7 3.0 AII operating modes 4.0 5.5 Vcc (V)
(4) Power supply voltage and range of instruction execution (condition A) t (ns) t (s) System clock 48.8 30.5 74
Sub clock
500 0 2.7 3.0 4.0 5.5 Vcc (V) Active (high-speed/medium-speed) mode 0 2.7 3.0 Subactive mode 4.0 5.5 Vcc (V)
(5) Power supply voltage and range of instruction execution (condition B) t (ns) t (s) System clock 48.8 30.5 74
Sub clock
500 0 2.7 3.0 4.0 5.5 Vcc (V) Active (high-speed/medium-speed) mode 0 2.7 3.0 Subactive mode 4.0 5.5 Vcc (V)
(6) Power supply voltage and range of instruction execution (condition C and D) t (ns) t (s) System clock 48.8 30.5 74 100
Sub clock
500 0 2.7 3.0 4.0 5.5 Vcc (V) Active (high-speed/medium-speed) mode 0 2.7 3.0 Subactive mode 4.0 5.5 Vcc (V)
Figure 25.1 Power Supply Voltage and Operating Ranges (2)
Rev. 4.00 Mar 21, 2006 page 596 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.2
25.2.1
Electrical Characteristics of H8S/2268 Group
Absolute Maximum Ratings
Table 25.1 lists the absolute maximum ratings. Table 25.1 Absolute Maximum Ratings
Item Power supply voltage Symbol VCC CVCC Input voltage (except port 4, 9, PH7) Vin Input voltage (port 4, 9, PH7) Reference voltage Analog power supply voltage Analog input voltage Operating temperature Storage temperature Vin Vref AVCC VAN Topr Tstg Value -0.3 to +7.0 -0.3 to +4.3 -0.3 to VCC + 0.3 -0.3 to AVCC + 0.3 -0.3 to AVCC + 0.3 -0.3 to +7.0 -0.3 to AVCC + 0.3 Regular specifications: -20 to +75* Wide-range specifications: -40 to +85* -55 to +125 Unit V V V V V V V C C C
Caution: Permanent damage to the chip may result if absolute maximum rating are exceeded. Note: * Operating temperature range for flash memory programming/erasing is Ta = -20 to +75C.
Rev. 4.00 Mar 21, 2006 page 597 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.2.2
DC Characteristics
Table 25.2 lists the DC characteristics. Table 25.3 lists the permissible output currents. Table 25.4 lists the bus drive characteristics. Table 25.2 DC Characteristics (1) Condition A (F-ZTAT version): VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C 1 to +85C (wide-range specifications)*
Item Schmitt trigger input voltage IRQ0, IRQ1, IRQ3 to IRQ5, WKP0 to WKP7 Symbol VT
-
Min. VCC x 0.2 VCC x 0.04
Typ.
Max. VCC x 0.8 VCC + 0.3 VCC + 0.3
Unit V V V V V V
Test Conditions
VT+
VT+ - VT- VCC x 0.05 VIH VCC x 0.9 VCC x 0.8
Vcc = 4.0 to 5.5 V Vcc = 3.0 to 4.0 V
Input high voltage
RES, STBY, NMI, FWE, MD2, MD1 EXTAL, Ports 1, 3, 7, F, J to N, PH0 to PH3 Ports 4, 9, PH7
VCC x 0.8 VIL - 0.3 - 0.3

AVCC + 0.3 V VCC x 0.1 VCC x 0.2 V V
Input low voltage
RES, STBY, FWE, MD2, MD1 NMI, EXTAL, Ports 1, 3, 4, 7, 9, F, H, J to N
Output high voltage
All output pins except P34 and P35, PH0 to PH3, and Ports J to N P34 and P35*2 PH0 to PH3, Ports J to N
VOH
VCC - 0.5 VCC - 1.0

V V
IOH = - 200 A IOH = - 1 mA
VCC - 2.7 VCC - 0.5 VCC - 1.0

V V V
IOH = - 100 A, VCC = 4.0 to 5.5 V IOH = - 200 A IOH = - 1 mA, VCC = 4.0 to 5.5 V
Rev. 4.00 Mar 21, 2006 page 598 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Item Output low voltage All output pins*3 Port 7 Symbol VOL Min. Typ. Max. 0.4 1.0 Unit V V Test Conditions IOL = - 0.8 mA IOL = 5 mA IOL = 10 mA, VCC = 4.0 to 5.5 V Input leakage current RES STBY, NMI, FWE, MD2, MD1 Ports 4, 9 PH7 Three-state leakage current (off state) Input pull-up MOS current Ports 1, 3, 7, F, J to N, PH0 to PH3 Port J | lTSI | | lin | 1.0 1.0 1.0 1.0 1.0 A A A A A Vin = 0.5 to VCC0.5 V Vin = 0.5 to AVCC0.5 V Vin = 0.5 to AVCC0.5 V Vin = 0.5 to AVCC0.5 V Vin = 0 V
-lP
10
300
A
Notes: 1. If the A/D and D/A converters and DTMF generation circuit are not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 2.0 V to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC. 2. P35/SCK1/SCL0 and P34/SDA0 are NMOS push-pull outputs. To output high level signal from SCL0 and SDA0 (ICE = 1), pull-up resistance must be connected externally. P35/SCK1 and P34 (ICE = 0) are driven high by NMOS. To output high, pull-up resistance should be connected externally. 3. When ICE = 0. To output low when bus drive function is selected is determined in table 25.4, Bus Drive Characteristics.
Rev. 4.00 Mar 21, 2006 page 599 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.2 DC Characteristics (2) Condition C (F-ZTAT version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C 1 to +85C (wide-range specifications)*
Item Schmitt trigger input voltage IRQ0, IRQ1, IRQ3 to IRQ5, WKP0 to WKP7 RES, STBY,NMI, FWE, MD2, MD1 EXTAL, Ports 1, 3, 7, F, J to N, PH0 to PH3 Ports 4, 9, PH7 Input low voltage RES, STBY,FWE, MD2, MD1 NMI, EXTAL, Ports 1, 3, 4, 7, 9, F, H, J to N Output high voltage All output pins except P34 and P35, PH0 to PH3, and Ports J to N P34 and P35*2 PH0 to PH3, Ports J to N Output low voltage Input leakage current All output pins Port 7 RES STBY, NMI, FWE, MD2, MD1 Ports 4, 9 PH7 | lin | *3 VOL VOH VIL Symbol VT- VT+ VT - VT VIH
+ -
Min. VCC x 0.2 VCC x 0.05 VCC x 0.9 VCC x 0.8
Typ.
Max. VCC x 0.8 VCC + 0.3 VCC + 0.3
Unit V V V V V
Test Conditions
Input high voltage
VCC x 0.8 - 0.3 - 0.3

VCC + 0.3 VCC x 0.1 VCC x 0.2
V V V
VCC - 0.5 VCC - 1.0 VCC - 2.7 VCC - 0.5 VCC - 1.0

0.4 1.0 1.0 1.0 1.0 1.0
V V V V V V V A A A A
IOH = - 200 A IOH = - 1 mA IOH = - 100 A IOH = - 200 A IOH = - 1 mA IOL = 0.8 mA IOL = 10 mA Vin = 0.5 to VCC0.5 V Vin = 0.5 to AVCC0.5 V Vin = 0.5 to AVCC0.5 V
Rev. 4.00 Mar 21, 2006 page 600 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Item Three-state leakage current (off state) Input pull-up MOS current Ports 1, 3, 7, Ports F, J to N, PH0 to PH3 Port J Symbol | lTSI | Min. Typ. Max. 1.0 Unit A Test Conditions Vin = 0.5 to AVCC0.5 V Vin = 0 V
-lP
50
300
A
Notes: 1. If the A/D and D/A converters and DTMF generation circuit are not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 4.0 V to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC. 2. P35/SCK1/SCL0 and P34/SDA0 are NMOS push-pull outputs. To output high level signal from SCL0 and SDA0 (ICE = 1), pull-up resistors must be connected externally. P35/SCK1 and P34 (ICE = 0) are driven high by NMOS. To output high, pull-up resistors should be connected externally. 3. When ICE = 0. To output low when bus drive function is selected is determined in table 25.4, Bus Drive Characteristics.
Rev. 4.00 Mar 21, 2006 page 601 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.2
DC Characteristics (3)
Condition A (F-ZTAT version): VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C 1 to +85C (wide-range specifications)*
Item Input capacitance RES NMI P32 to P35 All input pins except RES, NMI, P32 to P35 Current Normal operation consumption*2 Sleep mode All modules stopped Medium-speed mode (/32) Subactive mode ICC*4 Symbol Min. Cin Typ. Max. 30 30 20 15 Unit pF pF pF pF Test Conditions Vin = 0 V, f = 1 MHz, Ta = 25C

18 VCC = 3.0 V 13 VCC = 3.0 V 10
30 VCC = 5.5 V 22 VCC = 5.5 V
mA mA mA
f = 13.5 MHz f = 13.5 MHz f = 13.5 MHz, VCC = 3.0 V (reference values) f = 13.5 MHz, VCC = 3.0 V (reference values) Using 32.768 kHz crystal resonator, Vcc = 3.0 V (LCD lighting) Using 32.768 kHz crystal resonator, Vcc = 3.0 V (LCD lighting) Using 32.768 kHz crystal resonator, Vcc = 3.0 V (LCD and TMR4 not used, WDT_1 operates)
12
mA
60
110
A
Subsleep mode
50
90
A
Watch mode
4
25
A
Rev. 4.00 Mar 21, 2006 page 602 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Item Current consumption*2 Standby mode*3 Symbol Min. ICC*4 Analog power supply current During A/D conversion, D/A conversion, DTMF output Waiting for A/D conversion, D/A conversion, DTMF stopped Reference current During A/D conversion, D/A conversion Waiting for A/D conversion, D/A conversion RAM standby voltage VRAM AlCC AlCC Typ. 0.5 Vcc = 3.0 V 1.0 Max. 10 Vcc = 5.5 V 50 Vcc = 5.5 V 2.4 mA Unit A Test Conditions Ta 50C, 32.768 kHz not used 50C < Ta, 32.768 kHz not used
0.01
5.0
A
1.0
2.2
mA
0.01
5.0
A
2.0
V
Notes: 1. If the A/D and D/A converters and DTMF generation circuit are not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 2.0 to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC. 2. Current consumption values are for VIH min. = VCC - 0.2 V, VIL max. = 0.2 V with all output pins unloaded and the on-chip pull-up resistors in the off state. 3. The values are for VRAM VCC < 3.0 V, VIH min. = VCC - 0.2, and VIL max. = 0.2 V. 4. ICC depends on VCC and f as follows (reference): ICC max. = 4.0 (mA) + 0.64 (mA/V) x Vcc + 0.75 (mA/MHz) x f + 0.15 (mA/(MHz x V)) x VCC x f (normal operation) ICC max. = 3.0 (mA) + 0.60 (mA/V) x Vcc + 0.60 (mA/MHz) x f + 0.10 (mA/(MHz x V)) x VCC x f (sleep mode)
Rev. 4.00 Mar 21, 2006 page 603 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.2 DC Characteristics (4) Condition C (F-ZTAT version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C 1 to +85C (wide-range specifications)*
Item Input capacitance RES NMI P32 to P35 All input pins except RES, NMI, P32 to P35 Current Normal consumption*2 operation Sleep mode All modules stopped Medium-speed mode (/32) Subactive mode ICC*4 Symbol Min. Cin Typ. Max. 30 30 20 15 Unit pF pF pF pF Test Conditions Vin = 0 V, f = 1 MHz, Ta = 25C

30 40 mA VCC = 5.0 V VCC = 5.5 V 30 mA 22 VCC = 5.0 V VCC = 5.5 V 15 mA
f = 20.5 MHz f = 20.5 MHz f = 20.5 MHz, VCC = 5.0 V (reference values) f = 20.5 MHz, VCC = 5.0 V (reference values) Using 32.768 kHz crystal resonator, Vcc = 5.0 V (LCD lighting) Using 32.768 kHz crystal resonator, Vcc = 5.0 V (LCD lighting) Using 32.768 kHz crystal resonator, Vcc = 5.0 V (LCD and TMR4 not used, WDT_1 operates) Ta 50C, 32.768 kHz not used 50C < Ta, 32.768 kHz not used
19
mA
70
120
A
Subsleep mode
60
100
A
Watch mode
5
30
A
Standby mode*3

1.0 10 A Vcc = 5.0 V Vcc = 5.5 V 50 Vcc = 5.5 V
Rev. 4.00 Mar 21, 2006 page 604 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Item Analog power supply current During A/D conversion, D/A conversion, DTMF output Waiting for A/D conversion, D/A conversion, DTMF stopped Reference current During A/D conversion, D/A conversion Waiting for A/D conversion, D/A conversion RAM standby voltage VRAM AlCC Symbol Min. AlCC Typ. 1.5 Max. 2.5 Unit mA Test Conditions
0.01
5.0
A
1.5
2.2
mA
0.01
5.0
A
2.0
V
Notes: 1. If the A/D and D/A converters and DTMF generation circuit are not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 4.0 to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC. 2. Current consumption values are for VIH min. = VCC - 0.2 V, VIL max. = 0.2 V with all output pins unloaded and the on-chip pull-up resistors in the off state. 3. The values are for VRAM VCC < 4.0 V, VIH min. = VCC - 0.2, and VIL max. = 0.2 V. 4. ICC depends on VCC and f as follows (reference): ICC max. = 4.0 (mA) + 0.64 (mA/V) x Vcc + 0.75 (mA/MHz) x f + 0.15 (mA/(MHz x V)) x VCC x f (normal operation) ICC max. = 3.0 (mA) + 0.60 (mA/V) x Vcc + 0.60 (mA/MHz) x f + 0.10 (mA/(MHz x V)) x VCC x f (sleep mode)
Rev. 4.00 Mar 21, 2006 page 605 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.3 Permissible Output Currents Condition A (F-ZTAT version): VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition C (F-ZTAT version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Item Permissible output low current (per pin) Port 7 SCL1, SCL0, SDA1, SDA0 Output pins except port 7, SCL1, SCL0, SDA1, SDA0 Permissible output low current (total) Total of port 7 Total of all output pins including port 7 -IOH -IOH IOL Symbol IOL Min. Typ. Max. 10 10 1.0 30 60 1.0 30 Unit mA mA mA mA mA mA mA
Permissible output All output pins high current (per pin) Permissible output high current (total) Total of all output pins
Note: To protect chip reliability, do not exceed the output current values in table 25.3.
Rev. 4.00 Mar 21, 2006 page 606 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.4 Bus Drive Characteristics (1) Condition A (F-ZTAT version): VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C 1 to +85C (wide-range specifications)* , Target pins: SCL1, SCL0, SDA1, SDA0
Item Schmitt trigger input voltage Symbol VT
-
Min. VCC x 0.3 0.4 VCC x 0.7 -0.5
Typ.
Max. VCC x 0.7 VCC + 0.5 VCC x 0.3 0.5 0.4 20 1.0 250
Unit V
Test Conditions
VT+ VT+ - VT-
VCC= 4.0 to 5.5 V VCC = 3.0 to 4.0 V V V V IOL = 8 mA, VCC = 4.0 to 5.5 V IOL = 3 mA pF A ns VIN = 0 V, f = 1 MHz, Ta = 25C VIN = 0.5 to VCC0.5
VCC x 0.05 Input high voltage Input low voltage Output low voltage VIH VIL VOL
Input capacitance Three-state leakage current (off state) SDL, SDA output fall time Note:
CIN | lSTI | tOf
20 + 0.1 Cb
If the A/D and D/A converters and DTMF generation circuit are not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 2.0 V to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC
Rev. 4.00 Mar 21, 2006 page 607 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.4 Bus Drive Characteristics (2) Condition C (F-ZTAT version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C 1 to +85C (wide-range specifications)* , Target pins: SCL1, SCL0, SDA1, SDA0
Item Schmitt trigger input voltage Symbol VT- VT+ VT - VT Input high voltage Input low voltage Output low voltage Input capacitance Three-state leakage current (off state) SDL, SDA output fall time Note: VIH VIL VOL Cin | lSTI | tOf
+ -
Min. VCC x 0.3 0.4 VCC x 0.7 -0.5
Typ.
Max. VCC x 0.7 VCC + 0.5 VCC x 0.3 0.5 0.4 20 1.0 250
Unit V
Test Conditions
V V V pF A ns IOL = 8 mA IOL = 3 mA VIN = 0 V, f = 1 MHz, Ta = 25C VIN = 0.5 to VCC - 0.5
20 + 0.1Cb
If the A/D and D/A converters and DTMF generation circuit are not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 4.0 V to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC
25.2.3
AC Characteristics
Figure 25.2 show, the test conditions for the AC characteristics.
5V C = 30 pF: RL = 2.4 k RH = 12 Input/output timing measurement levels * Low level : 0.8 V * High level : 2.0 V
RL LSI output pin C RH
Figure 25.2 Output Load Circuit
Rev. 4.00 Mar 21, 2006 page 608 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Clock Timing: Table 25.5 lists the clock timing. Table 25.5 Clock Timing Condition A (F-ZTAT version): VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 2 to 13.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition C (F-ZTAT version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 10 to 20.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Condition A 13.5 MHz Item Clock cycle time Clock oscillator settling time at reset (crystal) Clock oscillator settling time in software standby (crystal) External clock settling delay time Sub clock oscillator settling time Sub clock oscillator frequency Sub clock (SUB) cycle time Symbol Min. tcyc tOSC1 tOSC2 74 20 8 Typ. Max. 500 Min. 48.8 10 8 Condition C 20.5 MHz Typ. Max. Unit 100 ns ms ms Figure 25.4 Figure 22.3 Test Conditions
tDEXT tOSC3 fSUB tSUB
500

2
500

2
s s kHz s
Figure 25.4
32.768 30.5
32.768 30.5
Rev. 4.00 Mar 21, 2006 page 609 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Control Signal Timing: Table 25.6 lists the control signal timing. Table 25.6 Control Signal Timing Condition A (F-ZTAT version): VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 2 to 13.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition C (F-ZTAT version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 10 to 20.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Item RES pulse width NMI pulse width (exiting software standby mode) IRQ pulse width (exiting software standby mode) Symbol tRESW tNMIW tIRQW Min. 20 200 200 Max. Unit tcyc ns ns Test Conditions Figure 25.5 Figure 25.6
Rev. 4.00 Mar 21, 2006 page 610 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Timing of On-Chip Peripheral Modules: Table 25.7 lists the timing of on-chip peripheral modules. Table 25.8 lists the I2C bus timing. Table 25.7 Timing of On-Chip Peripheral Modules Condition A (F-ZTAT version): VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 2 to 13.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition C (F-ZTAT version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 10 to 20.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Condition A Item TPU Timer clock pulse width Single edge Both edges Single edge Both edges Symbol Min. tTCKWH tTCKWL tTMCWH tTMCWL tTMCWH tTMCWL SCI Input clock cycle Asynchronous tSCyC Synchronous tSCKW tSCKf tSCKf tTXD tRXS tRXH 0.4 75 75 0.6 1.5 1.5 75 4 6 0.4 50 50 0.6 1.5 1.5 50 ns ns ns Figure 25.10 tScyC tCyC tCyC Figure 25.9 1.5 2.5 1.5 2.5 1.5 Max. Condition C Min. 1.5 2.5 1.5 2.5 1.5 Max. tCyC tCyC Figure 25.8 Unit tCyC Test Conditions Figure 25.7
TMR_0 to Timer clock TMR_3 pulse width TMR_4
Timer clock pulse width
Input clock pulse width Input clock rise time Input clock fall time Transmit data delay time Receive data setup time (synchronous) Receive data hold time (synchronous)
Rev. 4.00 Mar 21, 2006 page 611 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.8 I2C Bus Timing Condition: VCC = 3.0 V to 5.5 V, VSS = 0 V, = 5 MHz to maximum operating frequency Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Symbol Min. tSCL tSCLH tSCLL tSr tSf tSP tBUF tSTAH 3 tcyc 5 tcyc 5 tcyc 3 tcyc 3 tcyc 3 tcyc 0.5 tcyc 0 Typ. Max. 7.5 tcyc* 300 1 tcyc 400 Test Unit Conditions Remarks ns ns ns ns ns ns ns ns ns ns ns ns pF
2
Item SCL input cycle time SCL input high pulse width SCL input low pulse width SCL, SDA input rise time SCL, SDA input fall time SCL, SDA input spike pulse elimination time SDA input bus free time Start condition input hold time
12 tcyc
Figure 25.11
Retransmission start condition tSTAS input setup time Stop condition input setup time tSTOS Data input setup time Data input hold time SCL, SDA load capacitance tSDAS tSDAH Cb
Note: * tSr can be set to 7.5 tcyc or 17.5 tcyc according to the clock used for the I C module. For details, see section 14.6 Usage Notes.
Rev. 4.00 Mar 21, 2006 page 612 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.2.4
A/D Conversion Characteristics
Table 25.9 lists the A/D conversion characteristics. Table 25.9 A/D Conversion Characteristics Condition A (F-ZTAT version): VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 2 to 13.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition C (F-ZTAT version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, = 10 to 20.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Condition A 13.5 MHz Item Resolution Conversion time Analog input capacitance Permissible signal-source impedance Nonlinearity error Offset error Full-scale error Quantization error Absolute accuracy Min. 10 9.6 Typ. 10 Max. 10 20 5 6.0 4.0 4.0 0.5 8.0 Min. 10 6.3 Condition C 20.5 MHz Typ. 10 Max. 10 20 5 3.0 2.0 2.0 0.5 4.0 Unit bits s pF k LSB LSB LSB LSB LSB
Rev. 4.00 Mar 21, 2006 page 613 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.2.5
D/A Conversion Characteristics
Table 25.10 lists the D/A conversion characteristics. Table 25.10 D/A Conversion Characteristics Condition A (F-ZTAT version): VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 2 to 13.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition C (F-ZTAT version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, = 10 to 20.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Condition A and C Item Resolution Conversion time Absolute accuracy* Min. 8 Typ. 8 2.0 Max. 8 10 3.0 2.0 Unit bits s LSB LSB Load capacitance: 20 pF Load resistance: 2 M Load resistance: 4 M Test Conditions
Note: * Does not apply to module stop mode, software standby mode, watch mode, subactive mode, and subsleep mode.
Rev. 4.00 Mar 21, 2006 page 614 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.2.6
LCD Characteristics
Table 25.11 lists the LCD characteristics. Table 25.11 LCD Characteristics Condition A (F-ZTAT version): VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 2 to 13.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition C (F-ZTAT version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 10 to 20.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Condition A Applicable Test Pins Conditions Min. SEG1 to SEG40 COM1 to COM4 ID = 2A ID = 2A Standard Value Typ. 360 Max. 0.6 0.3 1000 VCC Condition C Standard Value Min. 40 4.0 Typ. 360 Max. 0.6 0.3 1000 VCC Unit V V k V *2 Notes *1 *1
Item Segment driver step-down voltage Common driver step-down voltage LCD power supply division resistor LCD voltage (step-up voltage circuit not used) LCD input reference voltage (using step-up 3 voltage circuit)* LCD voltage (using step-up voltage circuit)*3 LCD input reference power supply current (using step-up 3 voltage circuit)*
Symbol VDS VDC RLCD VLCD
40 Between V1 and VSS V1 3.0*4
VLCD3
V3
1.0
1.67
1.83
V
VLCD2 VLCD1 ILCD3
V2 V1 V3
No load

2 x VLCD3 3 x VLCD3 2.0

V
Reference value Reference value
No load, frame frequency: 64 Hz, VLCD3 = 1.67 V
A
Notes: 1. Voltage step-down between power supply pins V1, V2, V3, and VSS and segment pins. 2. If the LCD voltage is provided by an external power supply, the following relationship must be maintained: VCC V1 V2 V3 VSS. 3. The step-up voltage circuit should be used with 1/3 duty or 1/4 duty. 4. When the step-up voltage circuit is not used, the lowest value is V1 = 3.0 V. Use the step-up voltage circuit when V1 < 3.0 V.
Rev. 4.00 Mar 21, 2006 page 615 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.2.7
DTMF Characteristics
Table 25.12 lists the DTMF characteristics. Table 25.12 DTMF Characteristics Condition A (F-ZTAT version): VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 2 to 13.2 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition C (F-ZTAT version): VCC = 4.0 V to 5.5 V, AVCC = 2.7 V*1 to 5.5 V, Vref = 2.7 V*1 to AVCC, VSS = AVSS = 0 V, = 10 to 20.4 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Applicable Pins TONED Test Conditions AVcc-GND = 2.7 V RL = 100 k Standard Value Min. 750 Typ. 924 Max. Unit mVrms Notes Figure 25.12*2
Item DTMF output voltage (Row side) DTMF output voltage (Column side) DTMF output distortion DTMF output ratio
Symbol VOR
VOC
TONED
AVcc - GND = 770 2.7 V RL = 100 k AVcc - GND = 2.7 V RL = 100 k AVcc - GND = 2.7 V RL = 100 k
945
mVrms
Figure 25.12*2
% DISDT dBCR
TONED
3
7
%
Figure 25.12
TONED
2.5
dB
Figure 25.12
Notes: 1. When AVcc = 2.7 to 4.0 V, and Vref = 2.7 to 4.0 V, DTMF is only available. 2. VOR and Vcc are output voltages when a single waveform is output.
Rev. 4.00 Mar 21, 2006 page 616 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.2.8
Flash Memory Characteristics
Table 25.13 shows the flash memory characteristics. Table 25.13 Flash Memory Characteristics Condition: VCC = 3.0 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, Ta = -25C to +75C (Programming/erasing operating temperature range: regular specification)
Item Programming time*1*2*4 Erase time*1*3*5 Count of rewriting Data retention time Programming Wait time after SWE1 bit setting*1 Wait time after PSU1 bit setting*1 Wait time after P1 bit setting*1 *4 Symbol Min. tp tE NWEC TDRP*8 tsswe tspsu tsp10 tsp30 tsp200 Wait time after P1 bit clear*1 Wait time after PSU1 bit clear*1 Wait time after PV1 bit setting*1 tcp tcpsu tspv Typ. 30 Max. Unit 200 ms/ 128 bytes Test Condition
100 1200 ms/block 100*6 10000*7 Times 10 1 50 8 28 198 5 4 2 2 100 1 100 10 10 10 20 2 4 100 1 50 10 30 200 5 4 2 2 100 1 100 10 10 10 20 2 4 100 12 32 202 6*4 100 100 Year s s s s s s s s s s s 6n1 1000 n 7
Wait time after H'FF dummy write*1 tspvr Wait time after PV1 bit clear*1 tcpv Wait time after SWE1 bit clear Maximum programming count*1*4 Erase Wait time after SWE1 bit setting*1 Wait time after ESU1 bit setting*1 Wait time after E1 bit setting*1*5 Wait time after E1 bit clear*1 Wait time after ESU1 bit clear*1 Wait time after EV1 bit setting*1 tcswe N1 N2 tsswe tsesu tse tce tcesu tsev
Times 994*4 Times s s ms s s s s s s Times
Wait time after H'FF dummy write*1 tsevr Wait time after EV1 bit clear*1 tcev Wait time after SWE1 bit clear Maximum erase count*1*5 tcswe N
Rev. 4.00 Mar 21, 2006 page 617 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics Notes: 1. Make each time setting in accordance with the program or erase algorithm. 2. Programming time per 128 bytes (Shows the total period for which the P1 bit in the flash memory control register (FLMCR1) is set. It does not include the programming verification time.) 3. Block erase time (Shows the total period for which the E1 bit in FLMCR1 is set. It does not include the erase verification time.) 4. The maximum programming time value (tp(max.)): tP(max.) = Wait time after P1 bit setting (tsp) x maximum programming count (N) (tsp30 + tsp10) x 6 + (tsp200) x 994 5. For the maximum erase time (tE(max.)), the following relationship applies between the wait time after E1 bit setting (tse) and the maximum erase count (N): tE(max.) = Wait time after E1 bit setting (tse) x maximum erase count (N) 6. The minimum times that all characteristics after rewriting are guaranteed. (A range between 1 and minimum value is guaranteed.) 7. The reference value at 25C. (Normally, it is a reference that rewriting is enabled up to this value.) 8. Data hold characteristics when rewriting is performed within the range of specifications including minimum value.
Rev. 4.00 Mar 21, 2006 page 618 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.3
25.3.1
Electrical Characteristics of H8S/2264 Group
Absolute Maximum Ratings
Table 25.14 lists the absolute maximum ratings. Table 25.14 Absolute Maximum Ratings
Item Power supply voltage Input voltage (except ports 4 and 9) Input voltage (ports 4 and 9) Reference voltage Analog power supply voltage Analog input voltage Operating temperature Storage temperature Caution: Symbol VCC CVCC Vin Vin Vref AVCC VAN Topr Tstg Value -0.3 to +7.0 -0.3 to +4.3 -0.3 to VCC + 0.3 -0.3 to AVCC + 0.3 -0.3 to AVCC + 0.3 -0.3 to +7.0 -0.3 to AVCC + 0.3 Regular specifications: -20 to +75 Wide-range specifications: -40 to +85 -55 to +125 Unit V V V V V V V C C C
Permanent damage to the chip may result if absolute maximum rating are exceeded.
Rev. 4.00 Mar 21, 2006 page 619 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.3.2
DC Characteristics
Table 25.15 lists the DC characteristics. Table 25.16 lists the permissible output currents. Table 25.17 lists the bus drive characteristics. Table 25.15 DC Characteristics (1) Condition B (Masked-ROM version): VCC = 2.7 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)*1
Item Schmitt trigger input voltage Symbol
-
Min.
Typ.
Max. VCC x 0.8 VCC + 0.3 VCC + 0.3
Unit V V V V V V
Test Conditions
IRQ0, IRQ1, IRQ3, VT VCC x 0.2 IRQ4, WKP0 to + VT WKP7 + - VT - VT VCC x 0.05 VCC x 0.04 RES, STBY, NMI, FWE, MD2, MD1 EXTAL, Ports 1, 3, 7, F, H, J to L Ports 4, 9
Vcc = 4.0 to 5.5 V Vcc = 2.7 to 4.0 V
Input high voltage
VIH
VCC x 0.9 VCC x 0.8 VCC x 0.8

AVCC + 0.3 V VCC x 0.1 VCC x 0.2 V V
Input low voltage
RES, STBY, FWE, MD2, MD1 NMI, EXTAL, Ports 1, 3, 4, 7, 9, F, H, J to L
VIL
- 0.3 - 0.3
Output high voltage
All output pins except P34 and P35 P34 and P35*2
VOH
VCC - 0.5 VCC - 1.0 VCC - 2.7

0.4 1.0
V V V V V
IOH = - 200 A IOH = - 1 mA IOH = - 100 A, VCC = 4.0 to 5.5 V IOL = 0.8 mA IOL = 5 mA IOL = 10 mA, VCC = 4.0 to 5.5 V
Output low voltage
All output pins*3 Port 7
VOL

Rev. 4.00 Mar 21, 2006 page 620 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Item Input leakage current RES STBY, NMI, FWE, MD2, MD1 Ports 4, 9 PH7 Ports 1, 3, 7, F, J Three-state leakage current to L, PH0 to PH3 (off state) Input pull-up MOS current Port J | lTSI | Symbol | lin | Min. Typ. Max. 1.0 1.0 1.0 1.0 1.0 Unit A A A A A Vin = 0.5 to AVCC- 0.5 V Vin = 0.5 to VCC- 0.5 V Vin = 0.5 to VCC- 0.5 V Test Conditions Vin = 0.5 to VCC- 0.5 V
-lP
10
300
A
Vin = 0 V
Notes: 1. If the A/D converter is not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 2.0 V to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC. 2. P35/SCK1/SCL0 and P34/SDA0 are NMOS push-pull outputs. To output high level signal from SCL0 and SDA0 (ICE = 1), pull-up resistors must be connected externally. P35/SCK1 and P34 (ICE = 0) are driven high by NMOS. To output high pull-up resistors should be connected externally. 3. When ICE = 0. The output low level when bus drive function is selected is indicated in table 25.17, Bus Drive Characteristics.
Rev. 4.00 Mar 21, 2006 page 621 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.15 DC Characteristics (2) Condition D (Masked-ROM version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = - 40C to +85C (wide-range specifications)*1
Item Schmitt trigger input voltage Symbol
-
Min.
Typ.
Max. VCC x 0.8
Unit V V V
Test Conditions
IRQ0, IRQ1, IRQ3, VT VCC x 0.2 IRQ4, WKP0 to VT+ WKP7 + VT - VT VCC x 0.05 RES, STBY,NMI, FWE, MD2, MD1 EXTAL, Ports 1, 3, 7, F, H, J to L Ports 4, 9 VIH VCC x 0.9 VCC x 0.8 VCC x 0.8 VIL - 0.3 - 0.3
Input high voltage
VCC + 0.3 V VCC + 0.3 V AVCC + 0.3 VCC x 0.1 VCC x 0.2 V V V
Input low voltage
RES, STBY,FWE, MD2, MD1 NMI, EXTAL, Ports 1, 3, 4, 7, 9, F, H, J to L
Output high voltage
All output pins except P34 and P35 P34 and P35*2
VOH
VCC - 0.5 VCC - 1.0 VCC - 2.7

0.4 1.0 1.0 1.0 1.0 1.0 1.0
V V V V V A A A A A
IOH = - 200 A IOH = - 1 mA IOH = - 100 A IOL = 0.8 mA IOL = 10 mA Vin = 0.5 to VCC- 0.5 V
Output low voltage Input leakage current
All output pins Port 7 RES
*3
VOL

| lin |

STBY, NMI, FWE, MD2, MD1 Ports 4, 9 PH7
Vin = 0.5 to AVCC- 0.5 V Vin = 0.5 to VCC- 0.5 V Vin = 0.5 to VCC- 0.5 V
Three-state Ports 1, 3, 7, F, J leakage current to L, PH0 to PH3 (off state) Input pull-up MOS current Port J
| lTSI |
-lP
50
300
A
Vin = 0 V
Rev. 4.00 Mar 21, 2006 page 622 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics Notes: 1. If the A/D converter is not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 4.0 V to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC. 2. P35/SCK1/SCL0 and P34/SDA0 are NMOS push-pull outputs. To output high level signal from SCL0 and SDA0 (ICE = 1), pull-up resistors must be connected externally. P35/SCK1 and P34 (ICE = 0) are driven high by NMOS. To output high pill-up resistors should be connected externally. 3. When ICE = 0. The output low level when bus drive function is selected is indicated in table 25.17, Bus Drive Characteristics.
Table 25.15 DC Characteristics (3) Condition B (Masked-ROM version): VCC = 2.7 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)*1
Item Input capacitance RES NMI P34 and P35 All input pins except RES, NMI, P34, and P35 Current Normal consumption*2 operation Sleep mode All modules stopped Mediumspeed mode (/32) Subactive mode Subsleep mode ICC*4 Symbol Cin Min. Typ. Max. 30 30 20 15 Unit Test Conditions pF pF pF pF Vin = 0 V, f = 1 MHz, Ta = 25C

11 VCC = 3.0 V 7 VCC = 3.0 V 7
18 VCC = 5.5 V 12.5 VCC = 5.5 V
mA mA mA
f = 13.5 MHz f = 13.5 MHz f = 13.5 MHz, VCC = 3.0 V (reference values) f = 13.5 MHz, VCC = 3.0 V (reference values) Using 32.768 kHz crystal resonator, Vcc = 3.0 V (LCD lighting) Using 32.768 kHz crystal resonator, Vcc = 3.0 V (LCD lighting)
6
mA
20
40
A
8
25
A
Rev. 4.00 Mar 21, 2006 page 623 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Item Watch mode Current consumption*2 Symbol ICC*4 Min. Typ. 2.5 Max. 8 Unit Test Conditions A Ta 50C, Using 32.768 kHz crystal resonator, Vcc = 3.0 V (LCD not used, WDT_1 operates) 50C < Ta, using 32.768 kHz crystal resonator, Vcc = 3.0 V (LCD not used, WDT_1 operates) A Ta 50C, 32.768 kHz not used 50C < Ta, 32.768 kHz not used mA A
10
Standby mode*3

0.5 Vcc = 3.0 V 0.3 0.01
5 Vcc = 5.5 V 20 Vcc = 5.5 V 1.5 5.0
Analog power supply current
During A/D conversion Waiting for A/D conversion During A/D conversion Waiting for A/D conversion
AlCC

Reference current
AlCC

0.4 0.01
1.0 5.0
mA A
RAM standby voltage
VRAM
2.0
V
Notes: 1. If the A/D converter is not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 2.0 to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC. 2. Current consumption values are for VIH min. = VCC - 0.2 V, VIL max. = 0.2 V with all output pins unloaded and the on-chip pull-up resistors in the off state. 3. The values are for VRAM VCC < 2.7 V, VIH min. = VCC - 0.2, and VIL max. = 0.2 V. 4. ICC depends on VCC and f as follows (reference): ICC max. = 3.0 (mA) + 1.24 (mA/V) x (Vcc - 2.7 (V)) + 1.00 (mA/MHz) x (f - 2.0 (MHz)) (normal operation) ICC max. = 2.0 (mA) + 1.12 (mA/V) x (Vcc - 2.7 (V)) + 0.64 (mA/MHz) x (f - 2.0 (MHz)) (sleep mode)
Rev. 4.00 Mar 21, 2006 page 624 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.15 DC Characteristics (4) Condition D (Masked-ROM version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = - 40C to +85C (wide-range specifications)*1
Item Input capacitance RES NMI P34 and P35 All input pins except RES, NMI, P34, and P35 Current Normal consumption*2 operation Sleep mode All modules stopped Mediumspeed mode (/32) Subactive mode Subsleep mode Watch mode ICC*4 Symbol Cin Min. Typ. Max. 30 30 20 15 Unit Test Conditions pF pF pF pF Vin = 0 V, f = 1 MHz, Ta = 25C

18 VCC = 5.0 V 12 VCC = 5.0 V 11
25 VCC = 5.5 V 17 VCC = 5.5 V
mA mA mA
f = 20.5 MHz f = 20.5 MHz f = 20.5 MHz, VCC = 5.0 V (reference values) f = 20.5 MHz, VCC = 5.0 V (reference values) Using 32.768 kHz crystal resonator, Vcc = 5.0 V (LCD lighting) Using 32.768 kHz crystal resonator, Vcc = 5.0 V (LCD lighting) Ta 50C, Using 32.768 kHz crystal resonator, Vcc = 5.0 V (LCD not used, WDT_1 operates)
10
mA
20
40
A
8
25
A
3
10
A
Rev. 4.00 Mar 21, 2006 page 625 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Item Watch mode Current consumption*2 Symbol ICC*4 Min. Typ. Max. 12 Unit Test Conditions A 50C < Ta, using 32.768 kHz crystal resonator, Vcc = 5.0 V (LCD not used, WDT_1 operates) Ta 50C, 32.768 kHz not used 50C < Ta, 32.768 kHz not used mA A
Standby mode*3

0.5 Vcc = 5.0 V 0.8 0.01
5 Vcc = 5.5 V 20 Vcc = 5.5 V 1.6 5.0
A
Analog power supply current
During A/D conversion Waiting for A/D conversion During A/D conversion Waiting for A/D conversion
AlCC

Reference current
AlCC

0.6 0.01
1.0 5.0
mA A
RAM standby voltage
VRAM
2.0
V
Notes: 1. If the A/D converter is not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 4.0 to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC. 2. Current consumption values are for VIH min. = VCC - 0.2 V, VIL max. = 0.2 V with all output pins unloaded and the on-chip pull-up resistors in the off state. 3. The values are for VRAM VCC < 4.0 V, VIH min. = VCC - 0.2, and VIL max. = 0.2 V. 4. ICC depends on VCC and f as follows (reference): ICC max. = 3.0 (mA) + 1.24 (mA/V) x (Vcc - 2.7 (V)) + 1.00 (mA/MHz) x (f - 2.0 (MHz)) (normal operation) ICC max. = 2.0 (mA) + 1.12 (mA/V) x (Vcc - 2.7 (V)) + 0.64 (mA/MHz) x (f - 2.0 (MHz)) (sleep mode)
Rev. 4.00 Mar 21, 2006 page 626 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.16 Permissible Output Currents Condition B (Masked-ROM version): VCC = 2.7 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition D (Masked-ROM version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = - 40C to +85C (wide-range specifications)
Item Permissible output low current (per pin) Port 7 SCL0, SDA0 Output pins except port 7, SCL0, SDA0 Permissible output low current (total) Permissible output high current (per pin) Permissible output high current (total) Total of port 7 Total of all output pins including port 7 All output pins Total of all output pins -IOH -IOH IOL Symbol IOL Min. Typ. Max. Unit 10 10 1.0 30 60 1.0 30 mA mA mA mA mA mA mA
Note: To protect chip reliability, do not exceed the output current values in table 25.16.
Rev. 4.00 Mar 21, 2006 page 627 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.17 Bus Drive Characteristics (1) Condition B (Masked-ROM version): VCC = 2.7 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)*, Target pins: SCL0, SDA0
Item Schmitt trigger input voltage Symbol VT VT
-
Min. VCC x 0.3
Typ.
Max. VCC x 0.7
Unit V
Test Conditions
+ + -
VT - VT Input high voltage Input low voltage Output low voltage VIH VIL VOL
0.4 VCC x 0.05 VCC x 0.7 -0.5
VCC = 4.5 to 5.5 V VCC = 2.7 to 4.5 V
VCC + 0.5 V VCC x 0.3 V 0.5 0.4 20 pF V IOL = 8 mA, VCC = 4.5 to 5.5 V IOL = 3 mA VIN = 0 V, f = 1 MHz, Ta = 25C VIN = 0.5 to VCC -0.5
Input capacitance
CIN
Three-state leakage current (off state) SDL, SDA output fall time
| lTSI | tOf
1.0 250
A ns
20 + 0.1 Cb
Note: * If the A/D converter is not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 2.7 V to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC.
Rev. 4.00 Mar 21, 2006 page 628 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.17 Bus Drive Characteristics (2) Condition D (Masked-ROM version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications), Ta = - 40C to +85C (wide-range specifications)*, Target pins: SCL0, SDA0
Item Schmitt trigger input voltage Symbol VT- VT+ VT - VT Input high voltage Input low voltage Output low voltage Input capacitance VIH VIL VOL Cin
+ -
Min. VCC x 0.3 0.4 VCC x 0.05 VCC x 0.7 -0.5
Typ.
Max. VCC x 0.7
Unit V
Test Conditions
VCC = 4.5 to 5.5 V VCC = 4.0 to 4.5 V
VCC + 0.5 V VCC x 0.3 V 0.5 0.4 20 pF V IOL = 8mA IOL = 3mA VIN = 0 V, f = 1 MHz, Ta = 25C VIN = 0.5 to VCC-0.5
Three-state leakage current (off state) SDL, SDA output fall time
| lTSI | tOf
20 + 0.1Cb

1.0 250
A ns
Note: * If the A/D converter is not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 4.0 V to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC.
25.3.3
AC Characteristics
Figure 25.3 shows the test conditions for the AC characteristics.
5V C = 30 pF RL = 2.4 k RH = 12 Input/output timing measurement levels * Low level : 0.8 V * High level : 2.0 V
RL LSI output pin C RH
Figure 25.3 Output Load Circuit
Rev. 4.00 Mar 21, 2006 page 629 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Clock Timing: Table 25.18 lists the clock timing. Table 25.18 Clock Timing Condition B (Masked-ROM version): VCC = 2.7 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 2 to 13.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition D (Masked-ROM version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 10 to 20.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Condition B 13.5 MHz Item Clock cycle time Clock oscillator settling time at reset (crystal) Clock oscillator settling time in software standby (crystal) External clock settling time Sub clock oscillator settling time Sub clock oscillator frequency Sub clock (SUB) cycle time Symbol Min. tcyc tOSC1 tOSC2 74 20 8 Typ. Max. 500 Min. 48.8 10 8 Condition D 20.5 MHz Typ. Test Max. Unit Conditions 100 ns ms ms Figure 25.4 Figure 22.3
tDEXT tOSC3 fSUB tSUB
500

2
500

2
s s kHz s
Figure 25.4
32.768 30.5
32.768 30.5
Rev. 4.00 Mar 21, 2006 page 630 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Control Signal Timing: Table 25.19 lists the control signal timing. Table 25.19 Control Signal Timing Condition B (Masked-ROM version): VCC = 2.7 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 2 to 13.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition D (Masked-ROM version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 10 to 20.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Item RES pulse width NMI pulse width (exiting software standby mode) IRQ pulse width (exiting software standby mode) Symbol tRESW tNMIW tIRQW Min. 20 200 200 Max. Unit tcyc ns ns Test Conditions Figure 25.5 Figure 25.6
Rev. 4.00 Mar 21, 2006 page 631 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Timing of On-Chip Peripheral Modules: Table 25.20 lists the timing of on-chip peripheral modules. Table 25.21 lists the I2C bus timing. Table 25.20 Timing of On-Chip Peripheral Modules Condition B (Masked-ROM version): VCC = 2.7 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 2 to 13.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition D (Masked-ROM version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 10 to 20.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Condition B Item TPU Timer clock pulse width Single edge Both edges Single edge Both edges Asynchronous Synchronous tSCKW tSCKr tSCKf tTXD tRXS tRXH Symbol Min. tTCKWH tTCKWL tTMCWH tTMCWL tScyc 1.5 2.5 1.5 2.5 4 6 0.4 75 75 Max. 0.6 1.5 1.5 75 Condition D Min. 1.5 2.5 1.5 2.5 4 6 0.4 50 50 0.6 1.5 1.5 50 ns ns ns Figure 25.10 tScyc tcyc tcyc Figure 25.9 tcyc Figure 25.8 Test Max. Unit Conditions tcyc Figure 25.7
TMR_0, Timer clock TMR_1 pulse width SCI Input clock cycle
Input clock pulse width Input clock rise time Input clock fall time Transmit data delay time Receive data setup time (synchronous) Receive data hold time (synchronous)
Rev. 4.00 Mar 21, 2006 page 632 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Table 25.21 I2C Bus Timing Conditions: VCC = 2.7 V to 5.5 V, VSS = 0 V, = 5 MHz to maximum operating frequency, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Item SCL input cycle time SCL input high pulse width SCL input low pulse width SCL, SDA input rise time SCL, SDA input fall time SCL, SDA input spike pulse elimination time SDA input bus free time Start condition input hold time Symbol Min. tSCL tSCLH tSCLL tSr tSf tSP tBUF tSTAH 3 tcyc 5 tcyc 5 tcyc 3 tcyc 3 tcyc 3 tcyc 0.5 tcyc 0 Typ. Max. Test Unit Conditions Remarks ns ns Figure 25.11
12 tcyc
ns * ns 7.5 tcyc 300 1 tcyc ns ns ns ns ns ns ns ns pF
2
400
Retransmission start condition tSTAS input setup time Stop condition input setup time tSTOS Data input setup time Data input hold time SCL, SDA load capacitance tSDAS tSDAH Cb
Note: * tSr can be set to 7.5 tcyc or 17.5 tcyc according to the clock used for the I C module. For details, see section 14.5, Usage Notes.
Rev. 4.00 Mar 21, 2006 page 633 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.3.4
A/D Conversion Characteristics
Table 25.22 lists the A/D conversion characteristics. Table 25.22 A/D Conversion Characteristics Condition B (Masked-ROM version): VCC = 2.7 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 2 to 13.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications) Condition D (Masked-ROM version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, = 10 to 20.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Condition B 13.5 MHz Item Resolution Conversion time Analog input capacitance Permissible signal-source impedance Nonlinearity error Offset error Full-scale error Quantization error Absolute accuracy Min. 10 9.6 Typ. 10 Max. 10 20 5 6.0 4.0 4.0 0.5 8.0 Min. 10 6.3 Condition D 20.5 MHz Typ. 10 Max. 10 20 5 3.0 2.0 2.0 0.5 4.0 Unit bits s pF k LSB LSB LSB LSB LSB
Rev. 4.00 Mar 21, 2006 page 634 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.3.5
LCD Characteristics
Table 25.23 lists the LCD characteristics. Table 25.23 LCD Characteristics Condition B (Masked-ROM version): VCC = 2.7 V to 5.5 V, AVCC = 2.7 V to 5.5 V, Vref = 2.7 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 2 to 13.5 MHz, Ta = -20C to +75C Condition D (Masked-ROM version): VCC = 4.0 V to 5.5 V, AVCC = 4.0 V to 5.5 V, Vref = 4.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 10 to 20.5 MHz, Ta = -20C to +75C (regular specifications), Ta = -40C to +85C (wide-range specifications)
Condition B Standard Value Applicable Test Symbol Pins Conditions Min. Typ. Max. VDS SEG1 to SEG40 COM1 to COM4 ID = 2A 0.6 Condition D Standard Value Min. Typ. Max. Unit Notes 0.6 V *1
Item Segment driver step-down voltage Common driver step-down voltage LCD power supply division resistor LCD voltage
VDC
ID = 2A
0.3
0.3
V
*1
RLCD
Between 150 V1 and VSS V1 3.0
360
800
150
360
800
k
VLCD
VCC
4.0
VCC
V
*2
Notes: 1. Voltage step-down between power supply pins V1, V2, V3, and VSS and segment pins. 2. If the LCD voltage is provided by an external power supply, the following relationship must be maintained: VCC V1 V2 V3 VSS.
Rev. 4.00 Mar 21, 2006 page 635 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
25.4
Operation Timing
Operation timings are shown below. 25.4.1 Oscillator Settling Timing
Figure 25.4 shows the oscillator settling timing.
EXTAL tDEXT Vcc tDEXT
STBY tOSC1 RES tOSC1
Internal clock
Figure 25.4 Oscillator Settling Timing 25.4.2 Control Signal Timings
Control signal timings are shown below. * Reset Input Timing Figure 25.5 shows the reset input timing. * Interrupt Input Timing Figure 25.6 shows the NMI, IRQ interrupt reset input timing.
RES tRESW
Figure 25.5 Reset Input Timing
Rev. 4.00 Mar 21, 2006 page 636 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
NMI tNMIW
IRQ tIRQW
Figure 25.6 Interrupt Input Timing 25.4.3 Timing of On-Chip Peripheral Modules
Figures 25.7 to 25.12 show timing of on-chip peripheral modules.
TCLKA to TCLKC, TCLKD* tTCKWL Note: * Supported only by the H8S/2268 Group. tTCKWH
Figure 25.7 TPU Clock Input Timing
TMCI01, TMCI23*, TMCI4*
tTMCWL
tTMCWH
Note: * Supported only by the H8S/2268 Group.
Figure 25.8 8-Bit Timer Clock Input Timing
tSCKW SCK0 to SCK2 tScyc tSCKr tSCKf
Figure 25.9 SCK Clock Input Timing
Rev. 4.00 Mar 21, 2006 page 637 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
SCK0 to SCK2 tTXD TxD0 to TxD2 (transmit data) tRXS RxD0 to RxD2 (receive data) tRXH
Figure 25.10 SCI Input/Output Timing (Clock Synchronous Mode)
SDA0 to SDA1*2 tBUF
VIH VIL
tSTAH SCL0 to SCL1*2 P*1 S*1 tsf tSCLL tSCL
tSCLH
tSTAS
tSP
tSTOS
Sr*1 tSr tSDAH tSDAS
Notes: 1.
2.
S, P, and Sr indicate the following conditions. S : Start condition P : Stop condition Sr : Retransmission start condition Supported only by the H8S/2268 Group.
Figure 25.11 I2C Bus Interface Input/Output Timing (Option)
Rev. 4.00 Mar 21, 2006 page 638 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
RL = 100 k TONED
GND
Figure 25.12 TONED Load Circuit (Supported Only by the H8S/2268 Group)
25.5
Usage Note
The F-ZTAT and masked ROM versions both satisfy the electrical characteristics shown in this manual, but actual electrical characteristic values, operating margins, noise margins, and other properties may vary due to differences in manufacturing process, on-chip ROM, layout patterns, and so on. When system evaluation testing is carried out using the F-ZTAT version, the same evaluation testing should also be conducted for the masked ROM version when changing over to that version. When combination of the F-ZTAT version of the H8S/2268 Group and the masked ROM version of the H8S/2264 Group is used, the following condition should be satisfied. * Stabilization capacitance between the CVCC pin and ground = 0.2 F * Vcc = AVcc
Rev. 4.00 Mar 21, 2006 page 639 of 654 REJ09B0071-0400
Section 25 Electrical Characteristics
Rev. 4.00 Mar 21, 2006 page 640 of 654 REJ09B0071-0400
Appendix A I/O Port States in Each Pin State
Appendix A I/O Port States in Each Pin State
A.1 I/O Port State in Each Pin State of H8S/2268 Group
Hardware Standby Software Mode Standby Mode T T T T T Keep Keep T Keep [DAOEn = 1] Keep [DAOEn = 0] T Keep T Port [Otherwise] Keep Port J T T Port [Otherwise] Keep Port K T T Port [Otherwise] Keep Port L T T Port [Otherwise] Keep Program Execution State Sleep Mode Subsleep Mode I/O port I/O port I/O port I/O port Input port
Port Name Reset Port 1 Port 3 Port 4 Port 7 P97/DA1 P96/DA0 T T T T T
Watch Mode Keep Keep T Keep [DAOEn = 1] Keep [DAOEn = 0] T Keep T COM4 to COM1 [Otherwise] Keep SEG8 to SEG1 [Otherwise] Keep SEG16 to SEG9 [Otherwise] Keep SEG24 to SEG17 [Otherwise] Keep
Port F PH7
T T
T T T
I/O port Input port [Common output] COM4 to COM1 [Otherwise] I/O port [Segment output] SEG8 to SEG1 [Otherwise] I/O port [Segment output] SEG16 to SEG9 [Otherwise] I/O port [Segment output] SEG24 to SEG17 [Otherwise] I/O port
PH3 to PH0 T
[Common output] [Common output]
[Segment output] [Segment output]
[Segment output] [Segment output]
[Segment output] [Segment output]
Rev. 4.00 Mar 21, 2006 005 page 641 of 654 REJ09B0071-0400
Appendix A I/O Port States in Each Pin State Hardware Standby Software Mode Standby Mode T Port [Otherwise] Keep Port N T T Port [Otherwise] Keep Program Execution State Sleep Mode Subsleep Mode [Segment output] SEG32 to SEG25 [Otherwise] I/O port [Segment output] SEG40 to SEG33 [Otherwise] I/O port
Port Name Reset Port M T
Watch Mode SEG32 to SEG25 [Otherwise] Keep SEG40 to SEG33 [Otherwise] Keep
[Segment output] [Segment output]
[Segment output] [Segment output]
A.2
I/O Port State in Each Pin State of H8S/2264 Group
Hardware Standby Software Mode Standby Mode T T T T T T T T Keep Keep T Keep T Keep T Port [Otherwise] Keep Program Execution State Sleep Mode Subsleep Mode I/O port I/O port Input port I/O port Input port I/O port Input port [Common output] COM4 to COM1 [Otherwise] I/O port [Segment output] SEG8 to SEG1 [Otherwise] I/O port
Port Name Reset Port 1 Port 3 Port 4 Port 7 Port 9 Port F PH7 T T T T T T T
Watch Mode Keep Keep T Keep T Keep T COM4 to COM1 [Otherwise] Keep SEG8 to SEG1 [Otherwise] Keep
PH3 to PH0 T
[Common output] [Common output]
Port J
T
T
[Segment output] [Segment output] Port [Otherwise] Keep
Rev. 4.00 Mar 21, 2006 page 642 of 654 REJ09B0071-0400
Appendix A I/O Port States in Each Pin State Hardware Standby Software Mode Standby Mode T Port [Otherwise] Keep Port L T T Port [Otherwise] Keep SEG40 to SEG25 T T T Program Execution State Sleep Mode Subsleep Mode [Segment output] SEG16 to SEG9 [Otherwise] I/O port [Segment output] SEG24 to SEG17 [Otherwise] I/O port [Segment output] SEG40 to SEG25 [Otherwise] T
Port Name Reset Port K T
Watch Mode SEG16 to SEG9 [Otherwise] Keep SEG24 to SEG17 [Otherwise] Keep [Segment output] SEG40 to SEG25 [Otherwise] T
[Segment output] [Segment output]
[Segment output] [Segment output]
Legend: H: High level T: High-impedance Keep: Input port becomes high-impedance, output port retains state Port: Determined by port setting (input is high-impedance)
Rev. 4.00 Mar 21, 2006 005 page 643 of 654 REJ09B0071-0400
Appendix B Product Codes
Appendix B Product Codes
* H8S/2268 Group
Package (Renesas Package Code) Operating Voltage
Product Type H8S/2268 F-ZTAT version Standard product
Product Code HD64F2268
Mark Code HD64F2268TE13 HD64F2268TF13 HD64F2268FA13 HD64F2268TE20 HD64F2268TF20 HD64F2268FA20
100-pin TQFP 3.0 V to 5.5 V (TFP-100B) 100-pin TQFP (TFP-100G) 100-pin QFP (FP-100B) 100-pin TQFP 4.0 V to 5.5 V (TFP-100B) 100-pin TQFP (TFP-100G) 100-pin QFP (FP-100B) 100-pin TQFP 3.0 V to 5.5 V (TFP-100B) 100-pin TQFP (TFP-100G) 100-pin QFP (FP-100B) 100-pin TQFP 4.0 V to 5.5 V (TFP-100B) 100-pin TQFP (TFP-100G) 100-pin QFP (FP-100B)
H8S/2266 F-ZTAT version
Standard product
HD64F2266
HD64F2266TE13 HD64F2266TF13 HD64F2266FA13 HD64F2266TE20 HD64F2266TF20 HD64F2266FA20
Rev. 4.00 Mar 21, 2006 page 644 of 654 REJ09B0071-0400
Appendix B Product Codes
Package (Renesas Package Code)
Product Type H8S/2265 F-ZTAT version Standard product
Product Code HD64F2265
Mark Code HD64F2265TE13 HD64F2265TF13 HD64F2265FA13 HD64F2265TE20 HD64F2265TF20 HD64F2265FA20
Operating Voltage
100-pin TQFP 3.0 V to 5.5 V (TFP-100B) 100-pin TQFP (TFP-100G) 100-pin QFP (FP-100B) 100-pin TQFP 4.0 V to 5.5 V (TFP-100B) 100-pin TQFP (TFP-100G) 100-pin QFP (FP-100B)
Rev. 4.00 Mar 21, 2006 page 645 of 654 REJ09B0071-0400
Appendix B Product Codes
* H8S/2264 Group
Package (Renesas Package Code) Operating Voltage
Product Type H8S/2264 MaskedROM version Standard product
Product Code HD6432264
Mark Code HD6432264(A**)TF HD6432264(A**)FA HD6432264(F**)TF HD6432264(F**)FA
100-pin TQFP 2.7 V to 5.5 V (TFP-100G) 100-pin QFP (FP-100B) 100-pin TQFP 4.0 V to 5.5 V (TFP-100G) 100-pin QFP (FP-100B)
Version with HD6432264W on-chip I2C bus interface
HD6432264W(A**)TF 100-pin TQFP 2.7 V to 5.5 V (TFP-100G) HD6432264W(A**)FA 100-pin QFP (FP-100B) HD6432264W(F**)TF 100-pin TQFP 4.0 V to 5.5 V (TFP-100G) HD6432264W(F**)FA 100-pin QFP (FP-100B)
H8S/2262 MaskedROM version
Standard product
HD6432262
HD6432262(A**)TF HD6432262(A**)FA HD6432262(F**)TF HD6432262(F**)FA
100-pin TQFP 2.7 V to 5.5 V (TFP-100G) 100-pin QFP (FP-100B) 100-pin TQFP 4.0 V to 5.5 V (TFP-100G) 100-pin QFP (FP-100B)
Version with HD6432262W on-chip I2C bus interface
HD6432262W(A**)TF 100-pin TQFP 2.7 V to 5.5 V (TFP-100G) HD6432262W(A**)FA 100-pin QFP (FP-100B) HD6432262W(F**)TF 100-pin TQFP 4.0 V to 5.5 V (TFP-100G) HD6432262W(F**)FA 100-pin QFP (FP-100B)
Legend: (A**), (F**): ROM code Note: Some products above are in the developing or planning stage. Please contact Renesas agency to confirm the present state of each product.
Rev. 4.00 Mar 21, 2006 page 646 of 654 REJ09B0071-0400
Appendix C Package Dimensions
Appendix C Package Dimensions
The package dimensions that are shown in the Renesas Semiconductor Packages Data Book have priority.
JEITA Package Code P-TQFP100-14x14-0.50 RENESAS Code PTQP0100KA-A Previous Code TFP-100B/TFP-100BV MASS[Typ.] 0.5g
HD
*1
D 51
75
NOTE) 1. DIMENSIONS"*1"AND"*2" DO NOT INCLUDE MOLD FLASH 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET. 50
76
bp b1
Reference Symbol
Dimension in Millimeters Min Nom 14 14 1.00 15.8 15.8 0.00 0.17 0.12 0 0.5 0.08 0.10 1.00 1.00 0.4 0.5 1.0 0.6 16.0 16.0 0.10 0.22 0.20 0.17 0.15 8 0.22 16.2 16.2 1.20 0.20 0.27 Max
c1
HE
E
c
D E A2 HD HE A A1 bp b1 c
*2
Terminal cross section
26
100
A2
A
c
1 ZD Index mark
25
ZE
c1
A1
F L L1
e x y ZD ZE L L1
Detail F
e
*3
y
bp
x
M
Figure C.1 TFP-100B Package Dimensions (H8S/2268 Group Only)
Rev. 4.00 Mar 21, 2006 page 647 of 654 REJ09B0071-0400
Appendix C Package Dimensions
JEITA Package Code P-TQFP100-12x12-0.40 RENESAS Code PTQP0100LC-A Previous Code TFP-100G/TFP-100GV MASS[Typ.] 0.4g
HD
*1
D NOTE) 1. DIMENSIONS"*1"AND"*2" DO NOT INCLUDE MOLD FLASH 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET. 50
75
51
76
bp
HE
E
b1
Reference Symbol
Dimension in Millimeters Min Nom 12 12 1.00 13.8 13.8 14.0 14.0 14.2 14.2 1.20 0.00 0.13 0.10 0.18 0.16 0.12 0.17 0.15 0 0.4 0.07 0.10 1.2 1.2 0.4 0.5 1.0 0.6 8 0.22 0.20 0.23 Max
*2
c1
c
D E A2
100
26
ZE
Terminal cross section
HD HE A
1 ZD
2 Index mark
5 F
A1 bp b1 c
A2
A
c1
c
e
*3
e x y ZD ZE L L1
y
bp
A1
L L1
x
M
Detail F
Figure C.2 TFP-100G Package Dimensions
Rev. 4.00 Mar 21, 2006 page 648 of 654 REJ09B0071-0400
Appendix C Package Dimensions
JEITA Package Code P-QFP100-14x14-0.50 RENESAS Code PRQP0100KA-A Previous Code FP-100B/FP-100BV MASS[Typ.] 1.2g
HD
*1
D 51 50 bp b1
NOTE) 1. DIMENSIONS"*1"AND"*2" DO NOT INCLUDE MOLD FLASH 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
75 76
Reference Symbol
Dimension in Millimeters Min Nom 14 14 2.70 15.7 15.7 0.00 0.17 0.12 0 0.5 0.08 0.10 1.0 1.0 0.3 0.5 1.0 0.7 16.0 16.0 0.12 0.22 0.20 0.17 0.15 8 0.22 16.3 16.3 3.05 0.25 0.27 Max
c1
HE
E
c
D E A2 HD HE A A1 bp b1 c
*2
Terminal cross section
100 1 ZD 2 5 26
ZE
A2
F
c1
A
c
A1
L L1
e x y ZD ZE L L1
Detail F
e y
*3
bp
x
M
Figure C.3 FP-100B Package Dimensions
Rev. 4.00 Mar 21, 2006 page 649 of 654 REJ09B0071-0400
Appendix C Package Dimensions
Rev. 4.00 Mar 21, 2006 page 650 of 654 REJ09B0071-0400
Index
Index
16-bit timer pulse unit (TPU).................. 183 Buffer operation.................................. 223 Buffer operation timing ...................... 241 Counter operation ............................... 216 Free-running count operation.............. 217 Input capture function......................... 219 Input capture signal timing ................. 239 Output compare output timing ............ 238 Periodic count operation ..................... 217 Phase counting mode .......................... 231 PWM modes ....................................... 226 Synchronous operation ....................... 221 TCNT count timing............................. 238 Toggle output...................................... 218 Waveform output by compare match.. 218 8-bit reload timer .................................... 278 Automatic reload timer operation ....... 283 Interval timer operation ...................... 282 8-bit timers.............................................. 255 16-bit count mode ............................... 271 Cascaded connection........................... 271 Compare-match count mode ............... 271 Pulse output ........................................ 266 TCNT incrementation timing.............. 267 Toggle output...................................... 275 A/D converter ......................................... 441 A/D converter activation..................... 237 Analog input channel .......................... 444 Conversion time.................................. 452 External trigger ................................... 454 Scan mode........................................... 451 Single mode ........................................ 449 Address map ............................................. 57 Address space ........................................... 20 Addressing modes..................................... 40 Absolute address ................................... 42 Immediate..............................................43 Memory indirect....................................43 Program-counter relative.......................43 Register direct .......................................41 Register indirect ....................................41 Register indirect with displacement ......41 Register indirect with post-increment ...42 Register indirect with pre-decrement ....42 Bcc ............................................................37 Break address ..........................................103 Break condition .......................................105 Bus arbitration.........................................113 Bus cycle.................................................111 Bus masters .............................................113 Clock pulse generator..............................535 Condition field ..........................................39 Condition-code register.............................24 D/A converter..........................................461 Data direction register (DDR) .................139 Data register (DR) ...................................139 Data transfer controller ...........................115 Activated by software .........................132 Block transfer mode ............................129 Chain transfer......................................130 DTC vector table.................................123 Normal mode.......................................127 Register information............................123 Repeat mode........................................128 Software activation...................... 132, 136 Vector number for the software activation interrupt...............................................121 DTMF generation circuit.........................491 Effective address ................................. 40, 44 Effective address extension.......................39
Rev. 4.00 Mar 21, 2006 page 651 of 654 REJ09B0071-0400
Index
Exception handling ................................... 59 Interrupts............................................... 63 Reset exception handling ...................... 61 Stack status ........................................... 65 Traces.................................................... 63 Trap instruction..................................... 64 Exception Vector Table ............................ 60 Extended control register .......................... 23 Flash memory ......................................... 499 Boot mode........................................... 514 Emulation............................................ 518 Erase/erase-verify ............................... 523 Erasing units ....................................... 504 Error protection................................... 525 Hardware protection ........................... 525 Program/program-verify ..................... 521 Software protection............................. 525 User program mode ............................ 517 General register......................................... 26 I2C bus interface...................................... 381 I2C bus format..................................... 404 Noise cancelers ................................... 425 Serial format ....................................... 404 Input pull-up MOS function ................... 139 Instruction set............................................ 29 Arithmetic operations instructions ........ 32 Bit Manipulation instructions ............... 35 Block data transfer instructions............. 39 Branch instructions ............................... 37 Data transfer instructions ...................... 31 Logic operations instructions................ 34 Shift instructions ................................... 34 System control instructions................... 38 Interrupt ADI ..................................................... 454 CMIA.................................................. 272 CMIB .................................................. 272
Rev. 4.00 Mar 21, 2006 page 652 of 654 REJ09B0071-0400
ERI ......................................................373 NMI.....................................................297 OVI .....................................................272 RXI......................................................373 SWDTEND .........................................132 TCI ......................................................236 TEI ......................................................373 TGI......................................................236 TXI......................................................373 WOVI..................................................297 Interrupt control modes .............................88 Interrupt controller ....................................67 Interrupt exception handling vector table..84 Interrupt mask bit ......................................24 LCD controller/driver .............................467 Common drivers..................................471 Duty cycle ...........................................467 LCD display ........................................480 LCD RAM...........................................481 Segment driver ....................................473 Memory cycle .........................................111 On-board programming...........................514 Operating mode selection..........................55 Operation field ..........................................39 PC break controller .................................103 Power-down modes.................................547 Direct transitions .................................565 Hardware standby mode......................560 Medium-speed mode...........................556 Module stop mode...............................561 Sleep mode..........................................557 Software standby mode .......................558 Sub-active mode..................................564 Sub-sleep mode ...................................563 Watch mode ........................................562 Program counter........................................23
Index
Program/erase protection ........................ 525 Programmer mode .................................. 526 Register ADCR ......................... 447, 576, 585, 592 ADCSR ....................... 445, 576, 585, 592 ADDR ......................... 444, 576, 584, 591 BARA ......................... 104, 572, 580, 588 BARB ......................... 105, 572, 581, 588 BCRA ......................... 105, 572, 581, 588 BCRB.......................... 106, 573, 581, 588 BRR ............................ 324, 575, 584, 591 CRA ............................ 119, 570, 578, 586 CRB ............................ 119, 570, 578, 586 DACR ......................... 463, 571, 579, 587 DADR ......................... 462, 571, 579, 587 DAR............................ 119, 570, 578, 586 DDCSWR ................... 403, 571, 579, 587 DTCER ....................... 120, 573, 581, 588 DTCR.......................... 493, 570, 578, 586 DTLR.......................... 494, 570, 578, 586 DTVECR .................... 121, 573, 581, 588 EBR1 .......................... 510, 576, 585, 592 EBR2 .......................... 511, 577, 585, 592 FLMCR1..................... 508, 576, 585, 592 FLMCR2..................... 509, 576, 585, 592 FLPWCR .................... 512, 577, 585, 592 ICCR........................... 392, 575, 584, 591 ICDR........................... 386, 575, 584, 591 ICMR .......................... 389, 575, 584, 591 ICSR ........................... 399, 575, 584, 591 IENR1 ........................... 80, 571, 579, 587 IER................................ 74, 573, 581, 588 IPR ................................ 73, 573, 581, 589 ISCR ............................. 75, 573, 581, 588 ISR ................................ 77, 573, 581, 588 IWPR ............................ 80, 571, 579, 587 LCD RAM .................. 481, 570, 578, 586 LCR ............................ 474, 570, 578, 586 LCR2 .......................... 476, 570, 578, 586
LPCR........................... 470, 570, 578, 586 LPWRCR .................... 537, 572, 580, 588 MDCR........................... 56, 572, 580, 588 MRA ........................... 117, 570, 578, 586 MRB............................ 118, 570, 578, 586 MSTPCR..................... 554, 580, 586, 588 P1DDR........................ 145, 573, 581, 588 P1DR........................... 146, 574, 582, 589 P3DDR........................ 151, 573, 581, 588 P3DR........................... 151, 574, 582, 589 P3ODR........................ 152, 573, 581, 589 P7DDR........................ 157, 573, 581, 588 P7DR........................... 157, 574, 582, 589 PFDDR........................ 162, 573, 581, 589 PFDR........................... 162, 574, 582, 589 PHDDR ....................... 164, 571, 579, 586 PHDR.......................... 164, 571, 579, 587 PJDDR ........................ 168, 571, 579, 586 PJDR ........................... 168, 571, 579, 587 PJPCR ......................... 169, 571, 579, 587 PKDDR ....................... 172, 571, 579, 586 PKDR.......................... 172, 571, 579, 587 PLDDR ....................... 174, 571, 579, 586 PLDR .......................... 175, 571, 579, 587 PMDDR ...................... 176, 571, 579, 586 PMDR ......................... 177, 571, 579, 587 PNDDR ....................... 179, 571, 579, 587 PNDR.......................... 180, 571, 579, 587 PORT1 ........................ 146, 577, 585, 592 PORT3 ........................ 152, 577, 585, 592 PORT4 ........................ 156, 577, 585, 592 PORT7 ........................ 158, 577, 585, 592 PORT9 ........................ 161, 577, 585, 592 PORTF ........................ 163, 577, 585, 592 PORTH ....................... 165, 571, 579, 587 PORTJ......................... 169, 571, 579, 587 PORTK ....................... 173, 571, 579, 587 PORTL........................ 175, 571, 579, 587 PORTM....................... 178, 571, 579, 587 PORTN ....................... 180, 571, 579, 587
Rev. 4.00 Mar 21, 2006 page 653 of 654 REJ09B0071-0400
Index
RAMER ...................... 511, 573, 582, 589 RDR ............................ 306, 575, 584, 591 RSR..................................................... 306 RSTCSR ..................... 293, 575, 583, 590 SAR ............................ 119, 570, 578, 586 SARX.................. 388, 575, 576, 584, 591 SBYCR ....................... 552, 572, 580, 588 SCKCR ....................... 536, 572, 580, 588 SCMR ......................... 323, 575, 584, 591 SCR............................. 311, 575, 584, 591 SCRX.......................... 392, 571, 579, 587 SEMR ......................... 332, 572, 580, 588 SMR............................ 307, 575, 583, 591 SSR ............................. 316, 575, 584, 591 SYSCR.......................... 71, 572, 580, 588 TCNT..........211, 289, 574, 575, 582, 583, 589, 590 TCORA....................... 258, 575, 583, 590 TCORB ....................... 258, 575, 583, 590 TCR ............190, 259, 574, 575, 582, 583, 589, 590 TCSR .......................... 261, 575, 583, 590 TDR ............................ 306, 575, 584, 591 TGR ............................ 211, 574, 582, 589 TIER ........................... 205, 574, 582, 589 TIOR........................... 195, 574, 582, 589 TMDR......................... 193, 574, 582, 589
TSR ............................. 207, 574, 582, 589 TSTR........................... 212, 573, 581, 589 TSYR .......................... 213, 573, 581, 589 WPCR ......................... 170, 571, 579, 587 Register field .............................................39 Reset..........................................................61 Serial communication interface (SCI).....301 Asynchronous mode............................336 Bit rate.................................................324 Break ...................................................374 Clocked synchronous mode ................353 Framing error ......................................343 Mark state............................................374 Multiprocessor communication function ...............................................347 Overrun error ......................................343 Parity error ..........................................343 Smart card ...............................................301 Smart card interface ................................361 Stack pointer .............................................22 Watchdog timer.......................................287 Interval timer mode .............................295 Overflow .............................................296 Watchdog timer mode .........................294
Rev. 4.00 Mar 21, 2006 page 654 of 654 REJ09B0071-0400
Renesas 16-Bit Single-Chip Microcomputer Hardware Manual H8S/2268 Group, H8S/2264 Group
Publication Date: 1st Edition, April 2001 Rev.4.00, March 21, 2006 Published by: Sales Strategic Planning Div. Renesas Technology Corp. Edited by: Customer Support Department Global Strategic Communication Div. Renesas Solutions Corp.
(c)2006. Renesas Technology Corp., All rights reserved. Printed in Japan.
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