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Microcomputer Components
8-Bit CMOS Microcontroller
C505 C505C/C505A C505CA
Data Sheet 12.97
Edition 12.97 Published by Siemens AG, Bereich Halbleiter, MarketingKommunikation, Balanstrae 73, 81541 Munchen (c) Siemens AG 1997. All Rights Reserved. Attention please! As far as patents or other rights of third parties are concerned, liability is only assumed for components, not for applications, processes and circuits implemented within components or assemblies. The information describes the type of component and shall not be considered as assured characteristics. Terms of delivery and rights to change design reserved. For questions on technology, delivery and prices please contact the Semiconductor Group Offices in Germany or the Siemens Companies and Representatives worldwide (see address list). Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Siemens Office, Semiconductor Group. Siemens AG is an approved CECC manufacturer. Packing Please use the recycling operators known to you. We can also help you - get in touch with your nearest sales office. By agreement we will take packing material back, if it is sorted. You must bear the costs of transport. For packing material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice you for any costs incurred. Components used in life-support devices or systems must be expressly authorized for such purpose! Critical components1 of the Semiconductor Group of Siemens AG, may only be used in life-support devices or systems2 with the express written approval of the Semiconductor Group of Siemens AG. 1 A critical component is a component used in a life-support device or system whose failure can reasonably be expected to cause the failure of that life-support device or system, or to affect its safety or effectiveness of that device or system. 2 Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or maintain and sustain human life. If they fail, it is reasonable to assume that the health of the user may be endangered.
8-Bit CMOS Microcontroller
Advance Information
C505 C505C C505A C505CA
* Fully compatible to standard 8051 microcontroller * Superset of the 8051 architecture with 8 datapointers * Up to 20 MHz operating frequency - 375 ns instruction cycle time @16 MHz - 300 ns instruction cycle time @20 MHz (50 % duty cycle) * On-chip program memory (with optional memory protection) - C505-2R/C505C-2R : 16k byte on-chip ROM - C505A-4E/C505CA-4E: 32k byte on-chip OTP - alternatively up to 64k byte external program memory * 256 byte on-chip RAM * On-chip XRAM - C505/C505C : 256 byte - C505A/C505CA : 1K byte * 32 + 2 digital I/O lines - Four 8-bit digital I/O ports - One 2-bit digital I/O port (port 4) - Port 1 with mixed analog/digital I/O capability (more features on next page)
Oscillator Watchdog
On-Chip Emulation Support Module
XRAM
C505 / C505C: 256 Byte C505A / C505CA: 1 KByte
RAM
256 Byte
Port 0 Port 1
I/O 8 Analog Inputs / 8 Digit. I / O I/O I/O I / O (2-Bit I / O Port)
MCB03628
A / D Converter
C505 / C505C: 8-Bit C505A / C505CA: 10-Bit
Timer 0 Timer 1
Timer 2 Full-CAN Controller
C505C / C505CA only
C500 Core
8 Datapointers
8-Bit USART
Port 2 Port 3 Port 4
Program Memory
C505 / C505C: 16 k ROM C505A / C505CA: 32 k OTP
Watchdog Timer
Figure 1 C505 Functional Units
Semiconductor Group
3
1997-12-01
C505 / C505C C505A / C505CA
Features (cont'd): * Three 16-bit timers/counters - Timer 0 / 1 (C501 compatible) - Timer 2 with 4 channels for 16-bit capture/compare operation * Full duplex serial interface with programmable baudrate generator (USART) * Full CAN Module, version 2.0 B compliant (C505C and C505CA only) - 256 register/data bytes located in external data memory area - 1 MBaud CAN baudrate when operating frequency is equal to or above 8 MHz - internal CAN clock prescaler when input frequency is over 10 MHz * On-chip A/D Converter - up to 8 analog inputs - C505/C505C : 8-bit resolution - C505A/C505CA: 10-bit resolution * Twelve interrupt sources with four priority levels * On-chip emulation support logic (Enhanced Hooks Technology TM 1)) * Programmable 15-bit watchdog timer * Oscillator watchdog * Fast power on reset * Power Saving Modes - Slow-down mode - Idle mode (can be combined with slow-down mode) - Software power-down mode with wake up capability through P3.2/INT0 or P4.1/RXDC pin * P-MQFP-44 package * Pin configuration is compatible to C501, C504, C511/C513-family * Temperature ranges: SAB-C505 versions TA = 0 to 70 C SAF-C505 versions TA = - 40 to 85 C SAH-C505 versions TA = - 40 to 110 C (max. operating frequency: TBD) SAK-C505 versions TA = - 40 to 125 C (max. operating frequency: 12 MHz with 50% duty cycle) Table 1 Differences in Functionality of the C505 MCUs Device C505-2RM C505-LM C505C-2RM C505C-LM C505A-4EM C505CA-4EM Internal Program Memory XRAM Size ROM 16 KB - 16 KB - - - OTP - - - - 32 KB 32 KB 256 B 256 B 256 B 256 B 1 KB 1 KB A/D Converter Resolution 8 Bit 8 Bit 8 Bit 8 Bit 10 Bit 10 Bit CAN Controller - - -
1)
"Enhanced Hooks Technology" is a trademark and patent of Metalink Corporation licensed to Siemens.
Semiconductor Group
4
1997-12-01
C505 / C505C C505A / C505CA
Table 2 Ordering Information Type
SAB-C505-2RM SAB-C505-LM SAF-C505-2RM SAF-C505-LM SAB-C505C-2RM SAB-C505C-LM SAF-C505C-2RM SAF-C505C-LM SAB-C505A-4EM SAF-C505A-4EM SAB-C505CA-4EM SAB-C505CA-4EM
Ordering Code Package
Description (8-Bit CMOS microcontroller)
Q67127-DXXXX P-MQFP-44 with mask-programmable ROM (16K), 20 MHz Q67127-C2057 P-MQFP-44 for external memory (20 MHz) Extended temperature. - 40 C to 85 C : Q67127-DXXXX P-MQFP-44 with mask-programmable ROM (16K), 20 MHz Q67127-C2056 P-MQFP-44 for external memory (20 MHz) Q67127-DXXXX P-MQFP-44 with mask-progr. ROM (16K) and CAN, 20 MHz Q67127-C2029 P-MQFP-44 for external memory, with CAN (20 MHz) Extended temperature. - 40 C to 85 C : Q67127-DXXXX P-MQFP-44 with mask-progr. ROM (16K) and CAN, 20 MHz Q67127-C2030 P-MQFP-44 for external memory, with CAN (20 MHz) Q67127-C2060 Q67127-C2061 Q67127-C1082 Q67127-C2058 P-MQFP-44 with OTP memory (32K), 20 MHz Extended temperature. - 40 C to 85 C : P-MQFP-44 with OTP memory (32K), 20 MHz P-MQFP-44 with OTP memory (32K) and CAN, 20 MHz Extended temperature. - 40 C to 85 C : P-MQFP-44 with OTP memory (32K) and CAN, 20 MHz
Note: The ordering number of the ROM types (DXXXX extension) is defined after program release (verification) of the customer. Versions for the extended temperature range - 40 C to 110 C (SAH-C505) and - 40 C to 125 C (SAK-C505) are available on request.
Semiconductor Group
5
1997-12-01
C505 / C505C C505A / C505CA
V CC
V SS
V AREF V AGND
Port 0 8-Bit Digital I / O Port 1 8-Bit Digital I / O / 8-Bit Analog Inputs Port 2 8-Bit Digital I / O Port 3 8-Bit Digital I / O Port 4 2-Bit Digital I / O
MCL03629
XTAL1 XTAL2 C505 C505C C505A C505CA
RESET EA ALE PSEN
Figure 2 Logic Symbol Additional Literature For further information about the C505/C505C/C505A/C505CA the following literature is available: Title C505 8-Bit CMOS Microcontroller User's Manual C500 Microcontroller Family Architecture and Instruction Set User's Manual C500 Microcontroller Family - Pocket Guide Ordering Number B158-H7116-X-X-7600 B158-H6987-X-X-7600 B158-H6986-X-X-7600
Semiconductor Group
6
1997-12-01
C505 / C505C C505A / C505CA
33 32 31 30 29 28 27 26 25 24 23 P0.3 / AD3 P0.2 / AD2 P0.1 / AD1 P0.0 / AD0 V AREF V AGND P1.0 / AN0 / INT3 / CC0 P1.1 / AN1 / INT4 / CC1 P1.2 / AN2 / INT5 / CC2 P1.3 / AN3 / INT6 / CC3 P1.4 / AN4 34 35 36 37 38 39 40 41 42 43 44 22 21 20 19 18 17 16 15 14 13 12 P2.4 / A12 P2.3 / A11 P2.2 / A10 P2.1 / A9 P2.0 / A8 V CC V SS XTAL1 XTAL2 P3.7 / RD P3.6 / WR
This pin functionality is not available in the C505 and C505A.
P1.5 / AN5 / T2EX P1.6 / AN6 / CLKOUT P1.7 / AN7 / T2 RESET P3.0 / RxD P4.0 / TXDC P3.1 / TxD P3.2 / INT0 P3.3 / INT1 P3.4 / T0 P3.5 / / T1
P0.4 / AD4 P0.5 / AD5 P0.6 / AD6 P0.7 / AD7 EA P4.1 / RXDC ALE PSEN P2.7 / A15 P2.6 / A14 P2.5 / A13 C505 C505C C505A C505CA 1 2 3 4 5 6 7 8 9 10 11
MCP03630
Figure 3 C505 Pin Configuration P-MQFP-44 Package (top view)
Semiconductor Group
7
1997-12-01
C505 / C505C C505A / C505CA
Table 3 Pin Definitions and Functions Symbol P1.0-P1.7 Pin Number 40-44,1-3 I/O *) I/O Function Port 1 is an 8-bit quasi-bidirectional port with internal pull-up arrangement. Port 1 pins can be used for digital input/output or as analog inputs of the A/D converter. Port 1 pins that have 1's written to them are pulled high by internal pull-up transistors and in that state can be used as inputs. As inputs, port 1 pins being externally pulled low will source current (IIL, in the DC characteristics) because of the internal pullup transistors. Port 1 pins are assigned to be used as analog inputs via the register P1ANA. As secondary digital functions, port 1 contains the interrupt, timer, clock, capture and compare pins. The output latch corresponding to a secondary function must be programmed to a one (1) for that function to operate (except for compare functions). The secondary functions are assigned to the pins of port 1 as follows: P1.0 / AN0 / INT3 / CC0 Analog input channel 0 interrupt 3 input / capture/compare channel 0 I/O P1.1 / AN1 / INT4 / CC1 Analog input channel 1/ interrupt 4 input / capture/compare channel 1 I/O P1.2 / AN2 / INT5 / CC2 Analog input channel 2 / interrupt 5 input / capture/compare channel 2 I/O P1.3 / AN3 / INT6 / CC3 Analog input channel 3 interrupt 6 input / capture/compare channel 4 I/O P1.4 / AN4 Analog input channel 4 P1.5 / AN5 / T2EX Analog input channel 5 / Timer 2 external reload / trigger input P1.6 / AN6 / CLKOUT Analog input channel 6 / system clock output P1.7 / AN7 / T2 Analog input channel 7 / counter 2 input Port 1 is used for the low-order address byte during program verification of the C505-2R and C505C-2R.
40
41
42
43
44 1 2 3
*) I = Input O = Output
Semiconductor Group
8
1997-12-01
C505 / C505C C505A / C505CA
Table 3 Pin Definitions and Functions (cont'd) Symbol RESET Pin Number 4 I/O *) I Function RESET A high level on this pin for one machine cycle while the oscillator is running resets the device. An internal diffused resistor to V SS permits power-on reset using only an external capacitor to VCC. Port 3 is an 8-bit quasi-bidirectional port with internal pull-up arrangement. Port 3 pins that have 1's written to them are pulled high by the internal pull-up transistors and in that state can be used as inputs. As inputs, port 3 pins being externally pulled low will source current (I IL , in the DC characteristics) because of the internal pullup transistors. The output latch corresponding to a secondary function must be programmed to a one (1) for that function to operate (except for TxD and WR). The secondary functions are assigned to the pins of port 3 as follows: P3.0 / RxD Receiver data input (asynch.) or data input/output (synch.) of serial interface P3.1 / TxD Transmitter data output (asynch.) or clock output (synch.) of serial interface P3.2 / INT0 External interrupt 0 input / timer 0 gate control input P3.3 / INT1 External interrupt 1 input / timer 1 gate control input P3.4 / T0 Timer 0 counter input P3.5 / T1 Timer 1 counter input P3.6 / WR WR control output; latches the data byte from port 0 into the external data memory P3.7 / RD RD control output; enables the external data memory
P3.0-P3.7
5, 7-13
I/O
5 7 8 9 10 11 12
13 *) I = Input O = Output
Semiconductor Group
9
1997-12-01
C505 / C505C C505A / C505CA
Table 3 Pin Definitions and Functions (cont'd) Symbol P4.0 P4.1 Pin Number 6 28 I/O *) I/O I/O Function Port 4 is a 2-bit quasi-bidirectional port with internal pull-up arrangement. Port 4 pins that have 1's written to them are pulled high by the internal pull-up transistors and in that state can be used as inputs. As inputs, port 4 pins being externally pulled low will source current (I IL , in the DC characteristics) because of the internal pullup transistors. The output latch corresponding to the secondary function RXDC must be programmed to a one (1) for that function to operate. The secondary functions are assigned to the two pins of port 4 as follows (C505C and C505CA only) : P4.0 / TXDC Transmitter output of CAN controller P4.1 / RXDC Receiver input of CAN controller XTAL2 Output of the inverting oscillator amplifier. XTAL1 Input to the inverting oscillator amplifier and input to the internal clock generator circuits. To drive the device from an external clock source, XTAL1 should be driven, while XTAL2 is left unconnected. To operate above a frequency of 16 MHz, a duty cycle of the etxernal clock signal of 50 % should be maintained. Minimum and maximum high and low times as well as rise/ fall times specified in the AC characteristics must be observed.
XTAL2 XTAL1
14 15
O I
*) I = Input O = Output
Semiconductor Group
10
1997-12-01
C505 / C505C C505A / C505CA
Table 3 Pin Definitions and Functions (cont'd) Symbol P2.0-P2.7 Pin Number 18-25 I/O *) I/O Function Port 2 is a an 8-bit quasi-bidirectional I/O port with internal pullup resistors. Port 2 pins that have 1's written to them are pulled high by the internal pullup resistors, and in that state can be used as inputs. As inputs, port 2 pins being externally pulled low will source current (I IL , in the DC characteristics) because of the internal pullup resistors. Port 2 emits the high-order address byte during fetches from external program memory and during accesses to external data memory that use 16-bit addresses (MOVX @DPTR). In this application it uses strong internal pullup transistors when issuing 1s. During accesses to external data memory that use 8-bit addresses (MOVX @Ri), port 2 issues the contents of the P2 special function register and uses only the internal pullup resistors. The Program Store Enable output is a control signal that enables the external program memory to the bus during external fetch operations. It is activated every three oscillator periods except during external data memory accesses. Remains high during internal program execution. This pin should not be driven during reset operation. The Address Latch Enable output is used for latching the low-byte of the address into external memory during normal operation. It is activated every three oscillator periods except during an external data memory access. When instructions are executed from internal ROM or OTP (EA=1) the ALE generation can be disabled by bit EALE in SFR SYSCON. ALE should not be driven during reset operation.
PSEN
26
O
ALE
27
O
*) I = Input O = Output
Semiconductor Group
11
1997-12-01
C505 / C505C C505A / C505CA
Table 3 Pin Definitions and Functions (cont'd) Symbol EA Pin Number 29 I/O *) I Function External Access Enable When held at high level, instructions are fetched from the internal ROM or OTP memory when the PC is less than 4000H (C505 and C505C) or less than 8000H (C505A and C505CA). When held at low level, the C505 fetches all instructions from external program memory. EA should not be driven during reset operation. For the C505-L and the C505C-L this pin must be tied low. Port 0 is an 8-bit open-drain bidirectional I/O port. Port 0 pins that have 1's written to them float, and in that state can be used as high-impendance inputs. Port 0 is also the multiplexed low-order address and data bus during accesses to external program or data memory. In this application it uses strong internal pullup transistors when issuing 1's. Port 0 also outputs the code bytes during program verification in the C505-2R/C505C-2R. External pullup resistors are required during program verification. Reference voltage for the A/D converter. Reference ground for the A/D converter. Ground (0 V) Power Supply (+ 5 V)
P0.0-P0.7
37-30
I/O
VAREF VAGND VSS VCC
*) I = Input O = Output
38 39 16 17
- - - -
Semiconductor Group
12
1997-12-01
C505 / C505C C505A / C505CA
V CC V SS
XTAL1 XTAL2 RESET ALE PSEN EA
Oscillator Watchdog
XRAM 1)
256 Byte 1 KByte
RAM
256 Byte
ROM OTP 1)
16 K / 32 KByte
OSC & Timing
CPU 8 Datapointers Programmable Watchdog Timer Timer 0 Timer 1 Timer 2 Port 0 Port 0 8-Bit Digit. I / O Port 1 8-Bit Digit. I / O / 8-Bit Analog In Port 2 8-Bit Digit. I / O Port 3 8-Bit Digit. I / O Port 4 2-Bit Digit. I / O
Port 1
USART Baudrate Generator 256 Byte Reg. / Data
Port 2
Port 3
Full-CAN Controller
Port 4
Interrupt Unit
V AREF V AGND
A / D Converter 8- / 10-Bit 1) S&H MUX Emulation Support Logic
C505C / C505CA only.
1) C505 / C505C: 256B XRAM / 16KB ROM / 8-Bit ADC C505A / C505CA: 1KB XRAM / 32KB OTP / 10-Bit ADC
MCB03631
25.11.1997 26.09.1997 Alfes-Boding
Figure 4 Block Diagram of the C505/C505C/C505A/C505CA Semiconductor Group 13 1997-12-01
C505 / C505C C505A / C505CA
CPU The C505 is efficient both as a controller and as an arithmetic processor. It has extensive facilities for binary and BCD arithmetic and excels in its bit-handling capabilities. Efficient use of program memory results from an instruction set consisting of 44 % one-byte, 41 % two-byte, and 15% threebyte instructions. With a 16 MHz crystal, 58% of the instructions are executed in 375 ns. Special Function Register PSW (Address D0H) Bit No. MSB D7H D0H CY D6H AC D5H F0 D4H RS1 D3H RS0 D2H OV D1H F1 Reset Value : 00H LSB D0H P PSW
Bit CY AC F0 RS1 RS0
Function Carry Flag Used by arithmetic instruction. Auxiliary Carry Flag Used by instructions which execute BCD operations. General Purpose Flag Register Bank Select Control Bits These bits are used to select one of the four register banks. RS1 0 0 1 1 RS0 0 1 0 1 Function Bank 0 selected, data address 00H-07H Bank 1 selected, data address 08H-0FH Bank 2 selected, data address 10H-17H Bank 3 selected, data address 18H-1FH
OV F1 P
Overflow Flag Used by arithmetic instruction. General Purpose Flag Parity Flag Set/cleared by hardware after each instruction to indicate an odd/even number of "one" bits in the accumulator, i.e. even parity.
Semiconductor Group
14
1997-12-01
C505 / C505C C505A / C505CA
Memory Organization The C505 CPU manipulates operands in the following four address spaces: - On-chip program memory : - - - - - 16 Kbyte ROM (C505-2R/C505C-2R) or 32 Kbyte OTP (C505A-4E/C505CA-4E) Totally up to 64 Kbyte internal/external program memory up to 64 Kbyte of external data memory 256 bytes of internal data memory Internal XRAM data memory : 256 byte (C505/C505C) 1k byte (C505A/C505CA) a 128 byte special function register area
Figure 5 illustrates the memory address spaces of the C505 versions.
Alternatively FFFF H Internal XRAM Ext. Data Memory Ext. Unused Area Int. CAN Contr.
(256 Byte)
FFFF H See table below for detailed Data Memory partitioning
F6FF H 4000 H / 8000 H 3FFF H / 7FFF H
F700 H Indirect Addr. Internal RAM 80 H Internal RAM FF H Direct Addr. Special Function Regs. 7F H FF H
Int. (EA = 1)
Ext. (EA = 0)
Ext. Data Memory
80 H
0000 H "Code Space" "Data Space"
0000 H
00 H "Internal Data Space"
MCB03632
"Data Space" F700 H to FFFFH: Device C505 C505C C505A C505CA F700 H F7FFH F700 H F7FFH CAN Area Unused Area F700 H FEFFH F800 H FEFFH F700 H FBFF H F800 H FBFF H XRAM Area FF00 H FFFFH FF00 H FFFFH FC00H FFFFH FC00H FFFFH
Figure 5 C505 Memory Map Memory Map
Semiconductor Group
15
1997-12-01
C505 / C505C C505A / C505CA
Reset and System Clock The reset input is an active high input at pin RESET. Since the reset is synchronized internally, the RESET pin must be held high for at least two machine cycles (12 oscillator periods) while the oscillator is running. A pulldown resistor is internally connected to VSS to allow a power-up reset with an external capacitor only. An automatic reset can be obtained when VCC is applied by connecting the RESET pin to VCC via a capacitor. Figure 6 shows the possible reset circuitries.
VCC
+
a) C505 C505C C505A C505CA RESET &
b) C505 C505C C505A C505CA RESET
VCC
VCC
+
c) C505 C505C C505A C505CA RESET
MCS03633
Figure 6 Reset Circuitries
Semiconductor Group
16
1997-12-01
C505 / C505C C505A / C505CA
Figure 7 shows the recommended oscillator circuits for crystal and external clock operation.
C XTAL2
2 - 20 MHz C
C505 C505C C505A C505CA
XTAL1
C = 20 pF 10 pF for crystal operation
V CC
N.C.
XTAL2
External Clock Signal
C505 C505C C505A C505CA
XTAL1
MCS03634
Figure 7 Recommended Oscillator Circuitries
Semiconductor Group
17
1997-12-01
C505 / C505C C505A / C505CA
Multiple Datapointers As a functional enhancement to the standard 8051 architecture, the C505 contains eight 16-bit datapointers instead of only one datapointer. The instruction set uses just one of these datapointers at a time. The selection of the actual datapointer is done in the special function regsiter DPSEL. Figure 8 illustrates the datapointer addressing mechanism.
----DPSEL(92 H) DPSEL .2 0 0 0 0 1 1 1 1 .1 0 0 1 1 0 0 1 1 .0 0 1 0 1 0 1 0 1
.2 .1 .0 DPTR7 Selected Datapointer DPTR 0 DPTR 1 DPTR 2 DPTR 3 DPTR 4 DPTR 5 DPTR 6 DPTR 7 External Data Memory
MCD00779
DPTR0 DPH(83 H ) DPL(82 H)
Figure 8 External Data Memory Addressing using Multiple Datapointers
Semiconductor Group
18
1997-12-01
C505 / C505C C505A / C505CA
Enhanced Hooks Emulation Concept The Enhanced Hooks Emulation Concept of the C500 microcontroller family is a new, innovative way to control the execution of C500 MCUs and to gain extensive information on the internal operation of the controllers. Emulation of on-chip ROM based programs is possible, too. Each production chip has built-in logic for the supprt of the Enhanced Hooks Emulation Concept. Therefore, no costly bond-out chips are necessary for emulation. This also ensure that emulation and production chips are identical. The Enhanced Hooks TechnologyTM 1), which requires embedded logic in the C500 allows the C500 together with an EH-IC to function similar to a bond-out chip. This simplifies the design and reduces costs of an ICE-system. ICE-systems using an EH-IC and a compatible C500 are able to emulate all operating modes of the different versions of the C500 microcontrollers. This includes emulation of ROM, ROM with code rollover and ROMless modes of operation. It is also able to operate in single step mode and to read the SFRs after a break.
ICE-System Interface to Emulation Hardware
SYSCON PCON TCON
RESET EA ALE PSEN
RSYSCON RPCON RTCON
EH-IC
C500 MCU
Optional I/O Ports
Port 0 Port 2
Enhanced Hooks Interface Circuit
Port 3
Port 1
RPort 2 RPort 0
TEA TALE TPSEN
Target System Interface
MCS02647
Figure 9 Basic C500 MCU Enhanced Hooks Concept Configuration Port 0, port 2 and some of the control lines of the C500 based MCU are used by Enhanced Hooks Emulation Concept to control the operation of the device during emulation and to transfer informations about the program execution and data transfer between the external emulation hardware (ICE-system) and the C500 MCU.
1)
"Enhanced Hooks Technology" is a trademark and patent of Metalink Corporation licensed to Siemens.
Semiconductor Group
19
1997-12-01
C505 / C505C C505A / C505CA
Special Function Registers The registers, except the program counter and the four general purpose register banks, reside in the special function register area. The special function register area consists of two portions : the standard special function register area and the mapped special function register area. Five special function register of the C505 (PCON1,P1ANA, VR0, VR1, VR2) are located in the mapped special function register area. For accessing the mapped special function register area, bit RMAP in special function register SYSCON must be set. All other special function registers are located in the standard special function register area which is accessed when RMAP is cleared ("0"). The registers and data locations of the CAN controller (CAN-SFRs) are located in the external data memory area at addresses F700H to F7FFH.. Special Function Register SYSCON (Address B1H) Reset Value : XX100X01B (C505CA only) Reset Value : XX100001B LSB 0
Bit No. MSB 7 B1H -
6 -
5 EALE
2 1 RMAP CMOD CSWO XMAP1 XMAP0 1)
4
3
SYSCON
The functions of the shaded bits are not described here. 1) This bit is only available in the C505CA.
Bit RMAP
Function Special function register map bit RMAP = 0 : The access to the non-mapped (standard) special function register area is enabled. RMAP = 1 : The access to the mapped special function register area is enabled.
As long as bit RMAP is set, mapped special function register area can be accessed. This bit is not cleared by hardware automatically. Thus, when non-mapped/mapped registers are to be accessed, the bit RMAP must be cleared/set respectively by software. All SFRs with addresses where address bits 0-2 are 0 (e.g. 80H, 88H, 90H, 98H, ..., F8H, FFH) are bitaddressable. The 52 special function registers (SFRs) in the standard and mapped SFR area include pointers and registers that provide an interface between the CPU and the other on-chip peripherals. The SFRs of the C505 are listed in table 4 and table 5. In table 4 they are organized in groups which refer to the functional blocks of the C505. The CAN-SFRs (applicable for the C505C and C505CA only) are also included in table 4. Table 5 illustrates the contents of the SFRs in numeric order of their addresses. Table 6 list the CAN-SFRs in numeric order of their addresses. .
Semiconductor Group
20
1997-12-01
C505 / C505C C505A / C505CA
Table 4 Special Function Registers - Functional Blocks Block CPU Symbol ACC B DPH DPL DPSEL PSW SP SYSCON2) VR0 VR1
4) 4)
Name Accumulator B-Register Data Pointer, High Byte Data Pointer, Low Byte Data Pointer Select Register Program Status Word Register Stack Pointer System Control Register Version Register 0 Version Register 1 Version Register 2 A/D Converter Control Register 0 A/D Converter Control Register 1 A/D Converter Data Reg. (C505/C505C) A/D Converter Start Reg. (C505/C505C) A/D Converter High Byte Data Register (C505A/C505CA) A/D Converter Low Byte Data Register (C505A/C505CA) Port 1 Analog Input Selection Register Interrupt Enable Register 0 Interrupt Enable Register 1 Interrupt Priority Register 0 Interrupt Priority Register 1 Timer Control Register Timer 2 Control Register Serial Channel Control Register Interrupt Request Control Register
Address E0H 1) F0H 1) 83H 82H 92H D0H 1) 81H B1H FCH FDH FDH FEH D8H 1) DCH D9H DAH D9H DAH 90H 1) A8H 1) B8H 1) A9H B9H 88H 1) C8H 1) 98H 1) C0H 1)
Contents after Reset 00H 00H 00H 00H XXXXX000B 3) 00H 07H XX100X01B 3) 6) XX100001B 3) 7) C5H 05H 6) 85H 7) 00X00000B 3) 01XXX000B 3) 00H XXH 3) 00H 00XXXXXXB 3) FFH 00H 00H 00H XX000000B 3) 00H 00X00000B 00H 00H 00H XX100X01B 3) 6) XX100001B 3) 7)
VR2 4) A/DADCON0 2) Converter ADCON1 ADDAT ADST ADDATH ADDATL P1ANA 2) 4) Interrupt System IEN0 IEN1 2) IP0 2) IP1 TCON 2) T2CON 2) SCON 2) IRCON XPAGE SYSCON2)
1) 2) 3) 4) 5) 6) 7)
2)
5)
XRAM
Page Address Register for Extended on-chip 91H XRAM and CAN Controller System Control Register B1H
Bit-addressable special function registers This special function register is listed repeatedly since some bits of it also belong to other functional blocks. "X" means that the value is undefined and the location is reserved This SFR is a mapped SFR. For accessing this SFR, bit RMAP in SFR SYSCON must be set. The content of this SFR varies with the actual step of the C505 (eg. 01H for the first step) C505 / C505A only C505C / C505CA only
Semiconductor Group
21
1997-12-01
C505 / C505C C505A / C505CA
Table 4 Special Function Registers - Functional Blocks (cont'd) Block Ports Symbol P0 P1 P1ANA 2) 4) P2 P3 P4 ADCON0 2) PCON 2) SBUF SCON SRELL SRELH TCON TH0 TH1 TL0 TL1 TMOD CCEN CCH1 CCH2 CCH3 CCL1 CCL2 CCL3 CRCH CRCL TH2 TL2 T2CON IEN0 2) IEN1 2) Name Port 0 Port 1 Port 1 Analog Input Selection Register Port 2 Port 3 Port 4 A/D Converter Control Register 0 Power Control Register Serial Channel Buffer Register Serial Channel Control Register Serial Channel Reload Register, low byte Serial Channel Reload Register, high byte Timer 0/1 Control Register Timer 0, High Byte Timer 1, High Byte Timer 0, Low Byte Timer 1, Low Byte Timer Mode Register Comp./Capture Enable Reg. Comp./Capture Reg. 1, High Byte Comp./Capture Reg. 2, High Byte Comp./Capture Reg. 3, High Byte Comp./Capture Reg. 1, Low Byte Comp./Capture Reg. 2, Low Byte Comp./Capture Reg. 3, Low Byte Reload Register High Byte Reload Register Low Byte Timer 2, High Byte Timer 2, Low Byte Timer 2 Control Register Interrupt Enable Register 0 Interrupt Enable Register 1 Watchdog Timer Reload Register Interrupt Enable Register 0 Interrupt Enable Register 1 Interrupt Priority Register 0 Power Control Register Power Control Register 1 Address 80H 1) 90H 1) 90H 1) A0H 1) B0H 1) E8H 1) D8H 1) 87H 99H 98H 1) AAH BAH 88H 1) 8CH 8DH 8AH 8BH 89H C1H C3H C5H C7H C2H C4H C6H CBH CAH CDH CCH C8H 1) A8H 1) B8H 1) 86H A8H 1) B8H 1) A9H 87H 88H 1) Contents after Reset FFH FFH FFH FFH FFH XXXXXX11B 00X00000B 3) 00H XXH 3) 00H D9H XXXXXX11B 3) 00H 00H 00H 00H 00H 00H 00H 3) 00H 00H 00H 00H 00H 00H 00H 00H 00H 00H 00X00000B 3) 00H 00H 00H 00H 00H 00H 00H 0XX0XXXXB 3)
Serial Channel
Timer 0/ Timer 1
Compare/ Capture Unit / Timer 2
Watchdog WDTREL IEN0 2) IEN1 2) IP0 2) Pow. Save PCON 2) Modes PCON1 4)
1) 2) 3) 4)
Bit-addressable special function registers This special function register is listed repeatedly since some bits of it also belong to other functional blocks. "X" means that the value is undefined and the location is reserved SFR is located in the mapped SFR area. For accessing this SFR, bit RMAP in SFR SYSCON must be set.
Semiconductor Group
22
1997-12-01
C505 / C505C C505A / C505CA
Table 4 Special Function Registers - Functional Blocks (cont'd) Block Symbol Name Control Register Status Register Interrupt Register Bit Timing Register Low Bit Timing Register High Global Mask Short Register Low Global Mask Short Register High Upper Global Mask Long Register Low Upper Global Mask Long Register High Lower Global Mask Long Register Low Lower Global Mask Long Register High Upper Mask of Last Message Register Low Upper Mask of Last Message Register High Lower Mask of Last Message Register Low Lower Mask of Last Message Register High Message Object Registers : Message Control Register Low Message Control Register High Upper Arbitration Register Low Upper Arbitration Register High Lower Arbitration Register Low Lower Arbitration Register High Message Configuration Register Message Data Byte 0 Message Data Byte 1 Message Data Byte 2 Message Data Byte 3 Message Data Byte 4 Message Data Byte 5 Message Data Byte 6 Message Data Byte 7 Address F700H F701H F702H F704H F705H F706H F707H F708H F709H F70AH F70BH F70CH F70DH F70EH F70FH F7n0H 5) F7n1H 5) F7n2H 5) F7n3H 5) F7n4H 5) F7n5H 5) F7n6H 5) F7n7H 5) F7n8H 5) F7n9H 5) F7nAH 5) F7nBH 5) F7nCH 5) F7nDH 5) F7nEH 5) Contents after Reset 01H XXH 3) XXH 3) UUH 3)
CAN CR Controller SR IR (C505C/ BTR0 C505CA BTR1 only) GMS0 GMS1 UGML0 UGML1 LGML0 LGML1 UMLM0 UMLM1 LMLM0 LMLM1 MCR0 MCR1 UAR0 UAR1 LAR0 LAR1 MCFG DB0n DB1n DB2n DB3n DB4n DB5n DB6n DB7n
0UUUUUUUB 3)
UUH 3) UUU11111B 3) UUH 3) UUH 3) UUH 3) UUUUU000B 3) UUH 3) UUH 3) UUH 3) UUUUU000B 3) UUH 3) UUH 3) UUH 3) UUH 3) UUH 3) UUUUU000B 3) UUUUUU00B3) XXH 3) XXH 3) XXH 3) XXH 3) XXH 3) XXH 3) XXH 3) XXH 3)
1) Bit-addressable special function registers 2) This special function register is listed repeatedly since some bits of it also belong to other functional blocks. 3) "X" means that the value is undefined and the location is reserved. "U" means that the value is unchanged by a reset operation. "U" values are undefined (as "X") after a power-on reset operation 4) SFR is located in the mapped SFR area. For accessing this SFR, bit RMAP in SFR SYSCON must be set. 5) The notation "n" (n= 1 to F) in the message object address definition defines the number of the related message object.
Semiconductor Group
23
1997-12-01
C505 / C505C C505A / C505CA
Table 5 Contents of the SFRs, SFRs in numeric order of their addresses Addr Register Content Bit 7 after Reset1) SP DPL DPH FFH 07H 00H 00H .7 .7 .7 .7 WDT PSEL TF1 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
80H 2) P0 81H 82H 83H 86H 87H 88H 89H 8AH 8BH 8CH 8DH
3)
.6 .6 .6 .6 .6
.5 .5 .5 .5 .5 IDLS TF0 - M1 .5 .5 .5 .5 T2EX EAN5 .5 - SM2 .5 .5 ET2 .5
.4 .4 .4 .4 .4 SD TR0 WS M0 .4 .4 .4 .4 .4 EAN4 .4 - REN .4 .4 ES .4 .4
.3 .3 .3 .3 .3 GF1 IE1 - GATE .3 .3 .3 .3 .3 EAN3 .3 - TB8 .3 .3 ET1 .3 .3
.2 .2 .2 .2 .2 GF0 IT1 - C/T .2 .2 .2 .2 INT5 EAN2 .2 .2 RB8 .2 .2 EX1 .2 .2
.1 .1 .1 .1 .1 PDE IE0 - M1 .1 .1 .1 .1 INT4 EAN1 .1 .1 TI .1 .1 ET0 .1 .1
.0 .0 .0 .0 .0 IDLE IT0 - M0 .0 .0 .0 .0 .0 EAN0 .0 .0 RI .0 .0 EX0 .0 .0
WDTREL 00H PCON PCON1 TMOD TL0 TL1 TH0 TH1 00H 00H 0XX0XXXXB 00H 00H 00H 00H 00H FFH FFH 00H XXXXX000B 00H XXH FFH 00H 00H D9H
SMOD PDS TR1 EWPD - GATE .7 .7 .7 .7 T2 EAN7 .7 - SM0 .7 .7 EA .7 C/T .6 .6 .6 .6 CLKOUT EAN6 .6 - SM1 .6 .6 WDT .6
88H 2) TCON
90H 2) P1 90H 3) P1ANA 91H 92H XPAGE DPSEL
98H 2) SCON 99H A0H2) A8H2) A9H AAH
1) 2) 3)
SBUF P2 IEN0 IP0 SRELL
OWDS WDTS .5
X means that the value is undefined and the location is reserved Bit-addressable special function registers SFR is located in the mapped SFR area. For accessing this SFR, bit RMAP in SFR SYSCON must be set.
Semiconductor Group
24
1997-12-01
C505 / C505C C505A / C505CA
Table 5 Contents of the SFRs, SFRs in numeric order of their addresses (cont'd) Addr Register Content Bit 7 after Reset1) P3 FFH SYSCON XX104) 0X01B
4)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
B0H2) B1H B1H
RD - -
WR - -
T1 EALE EALE
T0
INT1
INT0
TxD
RxD
RMAP CMOD -
XMAP1 XMAP0
SYSCON XX100001B 00H 00H XX000000B XXXXXX11B 00H 00H 00H 00H 00H 00H 00H 00H 00X00000B 00H 00H 00H 00H 00H
RMAP CMOD CSWO XMAP1 XMAP0 EX5 EX5 .4 - IEX5 EX4 EX4 .3 - IEX4 EX3 EX3 .2 - IEX3 0 ECAN .1 .1 SWI EADC EADC .0 .0 IADC
B8H 2) IEN1 3) B8H 2) IEN1 4) B9H BAH IP1 SRELH
EXEN2 SWDT EX6 EXEN2 SWDT EX6 - - EXF2 - - TF2 .5 - IEX6
C0H2) IRCON C1H C2H C3H C4H C5H C6H C7H CCEN CCL1 CCH1 CCL2 CCH2 CCL3 CCH3
COCA COCAL COCA COCAL COCA COCAL COCA COCAL H3 3 H2 2 H1 1 H0 0 .7 .7 .7 .7 .7 .7 T2PS .7 .7 .7 .7 CY BD .7 .6 .6 .6 .6 .6 .6 I3FR .6 .6 .6 .6 AC CLK .6 .5 .5 .5 .5 .5 .5 - .5 .5 .5 .5 F0 - .5 .4 .4 .4 .4 .4 .4 T2R1 .4 .4 .4 .4 RS1 BSY .4 .3 .3 .3 .3 .3 .3 T2R0 .3 .3 .3 .3 RS0 ADM .3 .2 .2 .2 .2 .2 .2 T2CM .2 .2 .2 .2 OV MX2 .2 .1 .1 .1 .1 .1 .1 T2I1 .1 .1 .1 .1 F1 MX1 .1 .0 .0 .0 .0 .0 .0 T2I0 .0 .0 .0 .0 P MX0 .0
C8H2) T2CON CAH CBH CCH CDH CRCL CRCH TL2 TH2
D0H2) PSW
D8H2) ADCON0 00X00000B D9H
1) 2) 3) 4)
ADDAT 3) 00H
X means that the value is undefined and the location is reserved Bit-addressable special function registers C505 / C505A only C505C / C505CA only
Semiconductor Group
25
1997-12-01
C505 / C505C C505A / C505CA
Table 5 Contents of the SFRs, SFRs in numeric order of their addresses (cont'd) Addr Register Content Bit 7 after Reset1) ADDATH 00H
7)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
D9H DAH DAH DCH E0H2) E8H
2)
.9 - .1
.8 - .0
.7 - -
.6 - - - .4 - .4 0 0 .4
.5 - - - .3 - .3 0 0 .3
.4 - - MX2 .2 - .2 1 1 .2
.3 - - MX1 .1 RXDC .1 0 .1
.2 - - MX0 .0 TXDC .0 1 1 .0
ADST
6)
XXXXXXXXB
ADDATL 00XX7) XXXXB ADCON1 01XXX000B ACC P4 B VR0 00H XXXXXX11B 00H C5H 05H 01H 5) 6) 11H 5) 7)
ADCL1 ADCL0 - .7 - .7 1 0 .7 .6 - .6 1 0 .6 .5 - .5 0 0 .5
F0H2) FCH
3)4)
FDH3)4) VR1 FEH3)4) VR2
1) 2) 3) 4) 5) 6) 7)
X means that the value is undefined and the location is reserved Bit-addressable special function registers SFR is located in the mapped SFR area. For accessing this SFR, bit RMAP in SFR SYSCON must be set. These are read-only registers The content of this SFR varies with the actual of the step C505 (eg. 01H or 11H for the first step) C505 / C505C only C505A / C505CA only
Semiconductor Group
26
1997-12-01
C505 / C505C C505A / C505CA
Table 6 Contents of the CAN Registers in numeric order of their addresses (C505C/C505CA only) Addr. Register Content Bit 7 n=1-FH after 1) Reset 2) F700H F701H F702H F704H F705H F706H F707H F708H F709H F70AH F70BH CR SR IR BTR0 BTR1 GMS0 GMS1 UGML0 UGML1 LGML0 LGML1 01H XXH XXH UUH 0UUU. 0 UUUUB UUH UUU1. 1111B UUH UUH UUH UUUU. U000B UUH UUH UUH UUUU. U000B UUH UUH UUH UUH UUH UUUU. U000B UUUU. UU00B ID4-0 DLC DIR ID20-18 ID12-5 0 XTD 0 0 0 0 MSGVAL RMTPND ID4-0 TXIE TXRQ ID20-18 ID12-5 0 RXIE MSGLST CPUUPD ID28-21 ID17-13 0 0 INTPND NEWDAT ID4-0 ID28-21 ID17-13 ID20-18 1 TEST BOFF Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
CCE
0
0
EIE INTID
SIE LEC2
IE LEC1
INIT LEC0
EWRN -
RXOK TXOK
SJW TSEG2 ID28-21 1 ID28-21 ID20-13 ID12-5
BRP TSEG1
1
1
1
0
0
0
F70CH UMLM0 F70DH UMLM1 F70EH F70FH F7n0H F7n1H F7n2H F7n3H F7n4H F7n5H F7n6H
1) 2)
LMLM0 LMLM1 MCR0 MCR1 UAR0 UAR1 LAR0 LAR1 MCFG
The notation "n" (n= 1 to F) in the address definition defines the number of the related message object. "X" means that the value is undefined and the location is reserved. "U" means that the value is unchanged by a reset operation. "U" values are undefined (as "X") after a power-on reset operation
Semiconductor Group
27
1997-12-01
C505 / C505C C505A / C505CA
Table 6 Contents of the CAN Registers in numeric order of their addresses (cont'd) (C505C/C505CA only) Addr. Register Content Bit 7 n=1-FH after 1) Reset 2) F7n7H F7n8H F7n9H F7nAH F7nBH DB0n DB1n DB2n DB3n DB4n XXH XXH XXH XXH XXH XXH XXH XXH .7 .7 .7 .7 .7 .7 .7 .7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
.6 .6 .6 .6 .6 .6 .6 .6
.5 .5 .5 .5 .5 .5 .5 .5
.4 .4 .4 .4 .4 .4 .4 .4
.3 .3 .3 .3 .3 .3 .3 .3
.2 .2 .2 .2 .2 .2 .2 .2
.1 .1 .1 .1 .1 .1 .1 .1
.0 .0 .0 .0 .0 .0 .0 .0
F7nCH DB5n F7nDH DB6n F7nEH
1) 2)
DB7n
The notation "n" (n= 1 to F) in the address definition defines the number of the related message object. "X" means that the value is undefined and the location is reserved. "U" means that the value is unchanged by a reset operation. "U" values are undefined (as "X" after a power-on reset operation
Semiconductor Group
28
1997-12-01
C505 / C505C C505A / C505CA
I/O Ports The C505 has four 8-bit I/O ports and one 2-bit I/O port. Port 0 is an open-drain bidirectional I/O port, while ports 1 to 4 are quasi-bidirectional I/O ports with internal pullup resistors. That means, when configured as inputs, ports 1 to 4 will be pulled high and will source current when externally pulled low. Port 0 will float when configured as input. The output drivers of port 0 and 2 and the input buffers of port 0 are also used for accessing external memory. In this application, port 0 outputs the low byte of the external memory address, time multiplexed with the byte being written or read. Port 2 outputs the high byte of the external memory address when the address is 16 bits wide. Otherwise, the port 2 pins continue emitting the P2 SFR contents. In this function, port 0 is not an open-drain port, but uses a strong internal pullup FET. Port 4 is 2-bit I/O port with CAN controller specific alternate functions. The eight analog input lines are realized as mixed digital/analog inputs. The 8 analog inputs, AN0-AN7, are located at the port 1 pins P1.0 to P1.7. After reset, all analog inputs are disabled and the related pins of port 1 are configured as digital inputs. The analog function of a specific port 1 pin is enabled by bits in the SFR P1ANA. Writing a 0 to a bit position of P1ANA assigns the corresponding pin to operate as analog input.
Note: P1ANA is a mapped SFR and can be only accessed if bit RMAP in SFR SYSCON is set.
Semiconductor Group
29
1997-12-01
C505 / C505C C505A / C505CA
Timer / Counter 0 and 1 Timer/Counter 0 and 1 can be used in four operating modes as listed in table 7 : Table 7 Timer/Counter 0 and 1 Operating Modes Mode 0 1 2 3 Description 8-bit timer/counter with a divide-by-32 prescaler 16-bit timer/counter 8-bit timer/counter with 8-bit autoreload Timer/counter 0 used as one 8-bit timer/counter and one 8-bit timer Timer 1 stops TMOD M1 0 1 1 1 M0 0 1 0 1 internal Input Clock external (max)
fOSC/6x32
fOSC/12x32
fOSC/6
fOSC/12
In the "timer" function (C/T = `0') the register is incremented every machine cycle. Therefore the count rate is fOSC/6. In the "counter" function the register is incremented in response to a 1-to-0 transition at its corresponding external input pin (P3.4/T0, P3.5/T1). Since it takes two machine cycles to detect a falling edge the max. count rate is fOSC/12. External inputs INT0 and INT1 (P3.2, P3.3) can be programmed to function as a gate to facilitate pulse width measurements. Figure 10 illustrates the input clock logic.
OSC
/6 C/T = 0
f OSC /6
Timer 0/1 Input Clock C/T = 1
P3.4/T0 P3.5/T1 TR0 TR1
_ <1
Control &
Gate (TMOD) P3.2/INT0 P3.3/INT1
=1
MCS03117
Figure 10 Timer/Counter 0 and 1 Input Clock Logic Semiconductor Group 30 1997-12-01
C505 / C505C C505A / C505CA
Timer/Counter 2 with Compare/Capture/Reload The timer 2 of the C505 provides additional compare/capture/reload features. which allow the selection of the following operating modes: - Compare - Capture - Reload : up to 4 PWM signals with 16-bit/300 ns resolution (@ 20 MHz clock) : up to 4 high speed capture inputs with 300 ns resolution : modulation of timer 2 cycle time
The block diagram in figure 11 shows the general configuration of timer 2 with the additional compare/capture/reload registers. The I/O pins which can used for timer 2 control are located as multifunctional port functions at port 1.
P1.5/ T2EX P1.7/ T2
Sync. T2I0 T2I1 Sync. & /6 Reload EXEN2
EXF2
_ <1
Interrupt Request
Reload
OSC
f OSC
/12 T2PS Timer 2 TL2 TH2
TF2
Compare
P1.0/ INT3/ CC0 P1.1/ INT4/ CC1 P1.2/ INT5/ CC2 P1.2/ INT6/ CC3
MCB02730
16 Bit Comparator
16 Bit Comparator
16 Bit Comparator
16 Bit Comparator
Input/ Output Control
Capture
CCL3/CCH3
CCL2/CCH2
CCL1/CCH1
CRCL/CRCH
Figure 11 Timer 2 Block Diagram
Semiconductor Group
31
1997-12-01
C505 / C505C C505A / C505CA
Timer 2 Operating Modes The timer 2, which is a 16-bit-wide register, can operate as timer, event counter, or gated timer. A roll-over of the count value in TL2/TH2 from all 1's to all 0's sets the timer overflow flag TF2 in SFR IRCON, which can generate an interrupt. The bits in register T2CON are used to control the timer 2 operation. Timer Mode : In timer function, the count rate is derived from the oscillator frequency. A prescaler offers the possibility of selecting a count rate of 1/6 or 1/12 of the oscillator frequency. Gated Timer Mode : In gated timer function, the external input pin T2 (P1.7) functions as a gate to the input of timer 2. lf T2 is high, the internal clock input is gated to the timer. T2 = 0 stops the counting procedure. This facilitates pulse width measurements. The external gate signal is sampled once every machine cycle. Event Counter Mode : In the event counter function. the timer 2 is incremented in response to a 1to-0 transition at its corresponding external input pin T2 (P1.7). In this function, the external input is sampled every machine cycle. Since it takes two machine cycles (12 oscillator periods) to recognize a 1-to-0 transition, the maximum count rate is 1/6 of the oscillator frequency. There are no restrictions on the duty cycle of the external input signal, but to ensure that a given level is sampled at least once before it changes, it must be held for at least one full machine cycle. Reload of Timer 2 : Two reload modes are selectable: In mode 0, when timer 2 rolls over from all 1's to all 0's, it not only sets TF2 but also causes the timer 2 registers to be loaded with the 16-bit value in the CRC register, which is preset by software. In mode 1, a 16-bit reload from the CRC register is caused by a negative transition at the corresponding input pin P1.5/T2EX. This transition will also set flag EXF2 if bit EXEN2 in SFR IEN1 has been set.
Semiconductor Group
32
1997-12-01
C505 / C505C C505A / C505CA
Timer 2 Compare Modes The compare function of a timer/register combination operates as follows : the 16-bit value stored in a compare or compare/capture register is compared with the contents of the timer register; if the count value in the timer register matches the stored value, an appropriate output signal is generated at a corresponding port pin and an interrupt can be generated. Compare Mode 0 In compare mode 0, upon matching the timer and compare register contents, the output signal changes from low to high. lt goes back to a low level on timer overflow. As long as compare mode 0 is enabled, the appropriate output pin is controlled by the timer circuit only and writing to the port will have no effect. Figure 12 shows a functional diagram of a port circuit when used in compare mode 0. The port latch is directly controlled by the timer overflow and compare match signals. The input line from the internal bus and the write-to-latch line of the port latch are disconnected when compare mode 0 is enabled.
Port Circuit Read Latch Compare Register Circuit Compare Reg. 16 Bit Comparator 16 Bit Timer Register Timer Circuit Timer Overflow Read Pin
MCS02661
VCC
Compare Match
Internal Bus Write to Latch
S D
Q Port Latch CLK Q R
Port Pin
Figure 12 Port Latch in Compare Mode 0
Semiconductor Group
33
1997-12-01
C505 / C505C C505A / C505CA
Compare Mode 1 If compare mode 1 is enabled and the software writes to the appropriate output latch at the port, the new value will not appear at the output pin until the next compare match occurs. Thus, it can be choosen whether the output signal has to make a new transition (1-to-0 or 0-to-1, depending on the actual pin-level) or should keep its old value at the time when the timer value matches the stored compare value. In compare mode 1 (see figure 13) the port circuit consists of two separate latches. One latch (which acts as a "shadow latch") can be written under software control, but its value will only be transferred to the port latch (and thus to the port pin) when a compare match occurs.
Port Circuit Read Latch Compare Register Circuit Compare Reg. 16 Bit Comparator 16 Bit Timer Register Timer Circuit Read Pin
MCS02662
VCC
Internal Bus Compare Match Write to Latch
D Shadow Latch CLK
Q
Q Port Latch CLK Q
D
Port Pin
Figure 13 Compare Function in Compare Mode 1
Timer 2 Capture Modes Each of the compare/capture registers CC1 to CC3 and the CRC register can be used to latch the current 16-bit value of the timer 2 registers TL2 and TH2. Two different modes are provided for this function. In mode 0, the external event causing a capture is : - for CC registers 1 to 3: a positive transition at pins CC1 to CC3 of port 1 - for the CRC register: a positive or negative transition at the corresponding pin, depending on the status of the bit I3FR in SFR T2CON. In mode 1 a capture occurs in response to a write instruction to the low order byte of a capture register. The write-to-register signal (e.g. write-to-CRCL) is used to initiate a capture. The timer 2 contents will be latched into the appropriate capture register in the cycle following the write instruction. In this mode no interrupt request will be generated.
Semiconductor Group
34
1997-12-01
C505 / C505C C505A / C505CA
Serial Interface (USART) The serial port is full duplex and can operate in four modes (one synchronous mode, three asynchronous modes) as illustrated in table 8. Table 8 USART Operating Modes Mode 0 SCON SM0 0 SM1 0 Shift register mode, fixed baud rate Serial data enters and exits through RxD; TxD outputs the shift clock; 8-bit are transmitted/received (LSB first) 8-bit UART, variable baud rate 10 bits are transmitted (through TxD) or received (at RxD) 9-bit UART, fixed baud rate 11 bits are transmitted (through TxD) or received (at RxD) 9-bit UART, variable baud rate Like mode 2 Description
1 2 3
0 1 1
1 0 1
For clarification some terms regarding the difference between "baud rate clock" and "baud rate" should be mentioned. In the asynchronous modes the serial interfaces require a clock rate which is 16 times the baud rate for internal synchronization. Therefore, the baud rate generators/timers have to provide a "baud rate clock" (output signal in figure 14 to the serial interface which - there divided by 16 - results in the actual "baud rate". Further, the abbrevation fOSC refers to the oscillator frequency (crystal or external clock operation). The variable baud rates for modes 1 and 3 of the serial interface can be derived either from timer 1 or from a decdicated baud rate generator (see figure 14).
Semiconductor Group
35
1997-12-01
C505 / C505C C505A / C505CA
Timer 1 Overflow Baud Rate Generator (SRELH SRELL)
ADCON0.7 (BD) 0 1 Mode 1 Mode 3
SCON.7 SCON.6 (SM0/ SM1)
/2
PCON.7 (SMOD) 0 1 Baud Rate Clock
f OSC
Mode 2 /6 Mode 0 Only one mode can be selected
MCS02733
Note: The switch configuration shows the reset state.
Figure 14 Block Diagram of Baud Rate Generation for the Serial Interface Table 9 below lists the values/formulas for the baud rate calculation of the serial interface with its dependencies of the control bits BD and SMOD. Table 9 Serial Interface - Baud Rate Dependencies Serial Interface Operating Modes Mode 0 (Shift Register) Mode 1 (8-bit UART) Mode 3 (9-bit UART) Active Control Bits Baud Rate Calculation BD - 0 1 SMOD - X X
fOSC / 6
Controlled by timer 1 overflow : (2SMOD x timer 1 overflow rate) / 32 Controlled by baud rate generator (2SMOD x fOSC) / (32 x baud rate generator overflow rate)
Mode 2 (9-bit UART)
-
0 1
fOSC / 32 fOSC / 16
Semiconductor Group
36
1997-12-01
C505 / C505C C505A / C505CA
CAN Controller (C505C and C505CA only) The on-chip CAN controller, compliant to version 2.0B, is the functional heart which provides all resources that are required to run the standard CAN protocol (11-bit identifiers) as well as the extended CAN protocol (29-bit identifiers). It provides a sophisticated object layer to relieve the CPU of as much overhead as possible when controlling many different message objects (up to 15). This includes bus arbitration, resending of garbled messages, error handling, interrupt generation, etc. In order to implement the physical layer, external components have to be connected to the C505. The internal bus interface connects the on-chip CAN controller to the internal bus of the microcontroller. The registers and data locations of the CAN interface are mapped to a specific 256 byte wide address range of the external data memory area (F700H to F7FFH) and can be accessed using MOVX instructions. Figure 15 shows a block diagram of the on-chip CAN controller.
TXDC RXDC
BTL-Configuration
Bit Timing Logic Timing Generator
CRC Gen./Check
TX/RX Shift Register Messages
Messages Handlers
Intelligent Memory Interrupt Register
Clocks (to all) Control
Status + Control
Bit Stream Processor Status Register Error Management Logic
MCB02736
to internal Bus
Figure 15 CAN Controller Block Diagram Semiconductor Group 37 1997-12-01
C505 / C505C C505A / C505CA
The TX/RX Shift Register holds the destuffed bit stream from the bus line to allow the parallel access to the whole data or remote frame for the acceptance match test and the parallel transfer of the frame to and from the Intelligent Memory. The Bit Stream Processor (BSP) is a sequencer controlling the sequential data stream between the TX/RX Shift Register, the CRC Register, and the bus line. The BSP also controls the EML and the parallel data stream between the TX/RX Shift Register and the Intelligent Memory such that the processes of reception, arbitration, transmission, and error signalling are performed according to the CAN protocol. Note that the automatic retransmission of messages which have been corrupted by noise or other external error conditions on the bus line is handled by the BSP. The Cyclic Redundancy Check Register (CRC) generates the Cyclic Redundancy Check code to be transmitted after the data bytes and checks the CRC code of incoming messages. This is done by dividing the data stream by the code generator polynomial. The Error Management Logic (EML) is responsible for the fault confinement of the CAN device. Its counters, the Receive Error Counter and the Transmit Error Counter, are incremented and decremented by commands from the Bit Stream Processor. According to the values of the error counters, the CAN controller is set into the states error active, error passive and busoff. The Bit Timing Logic (BTL) monitors the busline input RXDC and handles the busline related bit timing according to the CAN protocol. The BTL synchronizes on a recessive to dominant busline transition at Start of Frame (hard synchronization) and on any further recessive to dominant busline transition, if the CAN controller itself does not transmit a dominant bit (resynchronization). The BTL also provides programmable time segments to compensate for the propagation delay time and for phase shifts and to define the position of the Sample Point in the bit time. The programming of the BTL depends on the baudrate and on external physical delay times. The Intelligent Memory (CAM/RAM array) provides storage for up to 15 message objects of maximum 8 data bytes length. Each of these objects has a unique identifier and its own set of control and status bits. After the initial configuration, the Intelligent Memory can handle the reception and transmission of data without further microcontroller actions.
Semiconductor Group
38
1997-12-01
C505 / C505C C505A / C505CA
CAN Controller Software Initialization The very first step of the initialization is the CAN controller input clock selection. A divide-by-2 prescaler is enabled by default after reset (figure 16). Setting bit CMOD (SYSCON.3) disables the prescaler. The purpose of the prescaler selection is: - to ensure that the CAN controller is operable when fosc is over 10 MHz (bit CMOD =0) - to achieve the maximum CAN baudrate of 1 Mbaud when fosc is 8 MHz (bit CMOD=1) .
SYSCON.3 (CMOD)
f OSC
2
1 0
f CAN
Full-CAN Module
Condition: CMOD = 0, when f OSC > 10 MHz
MCS03296
Frequency (MHz)
fOSC
8 8 16
fCAN
8 4 8
CMOD BRP (SYSCON.3) (BTR0.0-5) 1 0 0 000000B 000000B 000000B
CAN Baudrate (Mbaud/sec) 1 0.5 1
Note : The switch configuration shows the reset state of bit CMOD.
Figure 16 CAN Controller Input Clock Selection
Semiconductor Group
39
1997-12-01
C505 / C505C C505A / C505CA
8-Bit A/D Converter (C505 and C505C only) The C505/C505C includes a high performance / high speed 8-bit A/D converter (ADC) with 8 analog input channels. It operates with a successive approximation technique and provides the following features: - - - - - 8 multiplexed input channels (port 1), which can also be used as digital outputs/inputs 8-bit resolution Internal start-of-conversion trigger Interrupt request generation after each conversion Single or continuous conversion mode
The 8-bit ADC uses two clock signals for operation : the conversion clock fADC (=1/tADC) and the input clock fIN (1/tIN). fADC is derived from the C505 system clock fOSC which is applied at the XTAL pins via the ADC clock prescaler as shown in figure 17. The input clock is equal to fOSC. The conversion clock fADC is limited to a maximum frequency of 1.25 MHz. Therefore, the ADC clock prescaler must be programmed to a value which assures that the conversion clock does not exceed 1.25 MHz. The prescaler ratio is selected by the bits ADCL1 and ADCL0 of SFR ADCON1.
ADCL1 ADCL0
f OSC
32 16 8 4 Clock Prescaler Input Clock MUX Conversion Clock
f ADC
A/D Converter
f IN
Condition: f ADC max < 1.25 MHz
f IN = f OSC =
1 CLP
MCS03299
MCU System Clock fIN Rate (fOSC) [MHz] 2 MHz 5 MHz 6 MHz 10 MHz 12 MHz 16 MHz 20 MHz 2 5 6 10 12 16 20
Prescaler Ratio /4 /4 /8 /8 / 16 / 16 / 16
fADC
[MHz] 0.5 1.25 0.75 1.25 0.75 1 1.25
ADCL1 0 0 0 0 1 1 1
ADCL0 0 0 1 1 0 0 0
Figure 17 8-Bit A/D Converter Clock Selection Semiconductor Group 40 1997-12-01
C505 / C505C C505A / C505CA
C505 / C505C
IEN1 (B8 H ) EXEN2 SWDT EX6 EX5 EX4 EX3 ECAN EADC Internal Bus
IRCON (C0 H ) EXF2 P1ANA (90 H ) EAN7 EAN6 EAN5 EAN4 EAN3 EAN2 EAN1 EAN0 TF2 IEX6 IEX5 IEX4 IEX3 SWI IADC
ADCON1 (DC H ) ADCL1 ADCL0 MX2 MX1 MX0
ADCON0 (D8 H ) BD CLK BSY ADM MX2 MX1 MX0
Port 1 MUX
S&H
Single / Continuous Mode
ADDAT ADST (D9 H ) (DA H ) LSB .1 .2 .3 .4 .5 .6 MSB
f OSC
Conversion Clock Prescaler
Conversion Clock f ADC Input Clock f IN
A/D Converter
V AREF V AGND
Start of conversion
Shaded Bit locations are not used in ADC-functions.
Internal Bus Write to ADST
MCB03298
Figure 18 Block Diagram of the 8-Bit A/D Converter
Semiconductor Group
41
1997-12-01
C505 / C505C C505A / C505CA
10-Bit A/D Converter (C505A and C505CA only) The C505 includes a high performance / high speed 10-bit A/D-Converter (ADC) with 8 analog input channels. It operates with a successive approximation technique and uses self calibration mechanisms for reduction and compensation of offset and linearity errors. The A/D converter provides the following features: - - - - - - - 8 multiplexed input channels (port 1), which can also be used as digital inputs/outputs 10-bit resolution Single or continuous conversion mode Internal start-of-conversion trigger capability Interrupt request generation after each conversion Using successive approximation conversion technique via a capacitor array Built-in hidden calibration of offset and linearity errors
The 10-bit ADC uses two clock signals for operation : the conversion clock fADC (=1/tADC) and the input clock fIN (=1/tIN). fADC is derived from the C505 system clock fOSC which is applied at the XTAL pins. The input clock fIN is equal to fOSC The conversion fADC clock is limited to a maximum frequency of 2 MHz. Therefore, the ADC clock prescaler must be programmed to a value which assures that the conversion clock does not exceed 2 MHz. The prescaler ratio is selected by the bits ADCL1 and ADCL0 of SFR ADCON1.
ADCL1 ADCL0 Conversion Clock MUX
f OSC
32 16 8 4 Clock Prescaler Input Clock
f ADC
A/D Converter
f IN
Condition: f ADC max < 2 MHz
1 f IN = f OSC = CLP
MCS03635
MCU System Clock fIN Rate (fOSC) [MHz] 2 MHz 6 MHz 8 MHz 12 MHz 16 MHz 20 MHz 2 6 8 12 16 20
Prescaler Ratio /4 /4 /4 /8 /8 / 16
fADC
[MHz] 0.5 1.5 2 1.5 2 1.25
ADCL1 0 0 0 0 0 1
ADCL0 0 0 0 1 1 0
Figure 19 10-Bit A/D Converter Clock Selection Semiconductor Group 42 1997-12-01
C505 / C505C C505A / C505CA
IEN1 (B8 H ) EXEN2 SWDT EX6 EX5 EX4 EX3 ECAN EADC
Internal Bus
IRCON (C0 H ) EXF2 P1ANA (90 H ) EAN7 EAN6 EAN5 EAN4 EAN3 EAN2 EAN1 EAN0 TF2 IEX6 IEX5 IEX4 IEX3 SWI IADC
ADCON1 (DC H ) ADCL1 ADCL0 MX2 MX1 MX0
ADCON0 (D8 H ) BD CLK BSY ADM MX2 MX1 MX0
Port 1 MUX
S&H
Single / Continuous Mode
ADDAT ADST (D9 H ) (DA H ) .2 .3 .4 .5 .6 .7 .8 MSB LSB .1
f OSC
Conversion Clock Prescaler
Conversion Clock f ADC Input Clock f IN
A/D Converter
V AREF V AGND
Start of conversion
Internal Bus Shaded Bit locations are not used in ADC-functions. Write to ADDATL
MCB03636
Figure 20 Block Diagram of the 10-Bit A/D Converter Semiconductor Group 43 1997-12-01
C505 / C505C C505A / C505CA
Interrupt System The C505 provides 12 interrupt vectors with four priority levels. Five interrupt requests can be generated by the on-chip peripherals (timer 0, timer 1, timer 2, serial interface, A/D converter). One interrupt can be generated by the CAN controller (C505C and C505CA only) or by a software setting and in this case the interrupt vector is the same. Six interrupts may be triggered externally (P3.2/ INT0, P3.3/INT1, P1.0/AN0/INT3/CC0, P1.1/AN1/INT4/CC1, P1.2/AN2/INT5/CC2, P1.3/AN3/INT6/ CC3). Additionally, the P1.5/AN5/T2EX can trigger an interrupt. The wake-up from power-down mode interrupt has a special functionality which allows to exit from the software power-down mode by a short low pulse at either pin P3.2/INT0 or the pin P4.1/RXDC. Figure 21 to 23 give a general overview of the interrupt sources and illustrate the request and the control flags which are described in the next sections. Table 10 lists all interrupt sources with their request flags and interrupt vectior addresses. Table 10 Interrupt Source and Vectors Interrupt Source External Interrupt 0 Timer 0 Overflow External Interrupt 1 Timer 1 Overflow Serial Channel Timer 2 Overflow / Ext. Reload A/D Converter Interrupt Vector Address 0003H 000BH 0013H 001BH 0023H 002BH 0043H Interrupt Request Flags IE0 TF0 IE1 TF1 RI / TI TF2 / EXF2 IADC - / SWI IEX3 IEX4 IEX5 IEX6 -
CAN Controller / Software Interrupt 004BH External interrupt 3 0053H External Interrupt 4 External Interrupt 5 External interrupt 6 Wake-up from power-down mode 005BH 0063H 006BH 007BH
Semiconductor Group
44
1997-12-01
C505 / C505C C505A / C505CA
Highest Priority Level P3.2 / INT0 IT0 TCON.0 A / D Converter IADC IRCON.0 EADC IEN1.0 IE0 TCON.1 EX0 IEN0.0 0003 H Lowest Priority Level
0043 H IP1.0 IP0.0 P o l l i n g S e q u e n c e
Timer 0 Overflow
TF0 TCON.5 SWI IRCON.1 >1 ECAN SIE CR.2 IEN1.1 004B H ET0 IEN0.1 000B H
Status
CAN Controller Interrupt Sources
>1 Error EIE CR.3 Message Transmit TXIE MCR0.5 / 4 Message Receive RXIE MCR0.3 / 2 IE CR.1
>1 INTPND MCR0.0 / 1 EA IEN0.7 IP1.1 IP0.1
Bit addressable Request flag is cleared by hardware C505C and C505CA Only
MCB03303
Figure 21 Interrupt Structure, Overview Part 1
2 11 199
Note: Each of the 15 CAN controller message objects (C505C and C505CA only), shown in the shaded area of Figure 21 provides the bits/flags.
Semiconductor Group 45 1997-12-01
C505 / C505C C505A / C505CA
Highest Priority Level P3.3 / INT1 IT1 TCON.2 P1.0 / AN0 / INT3 / CC0 I3FR T2CON.6 Timer 1 Overflow TF1 TCON.7 P1.1 / AN1 / INT4 / CC1 ET1 IEN0.3 IEX4 IRCON.3 EX4 IEN1.3 EA Bit addressable Request flag is cleared by hardware IEN0.7
MCB03304
IE1 TCON.3 EX1 IEN0.2 IEX3 IRCON.2 EX3 IEN1.2
0013 H Lowest Priority Level P o l l i n g S e q u e n c e IP1.3 IP0.3
0053 H IP1.2 IP0.2
001B H
005B H
Figure 22 Interrupt Structure, Overview Part 2
Semiconductor Group
46
1997-12-01
C505 / C505C C505A / C505CA
RI USART SCON.0 TI P1.2 / AN2 / INT5 / CC2 SCON.1
>1 ES IEN0.4 IEX5 IRCON.4 EX5 IEN1.4 0063 H IP1.4 IP0.4 0023 H
Highest Priority Level
Lowest Priority Level P o l l i n g S e q u e n c e IP1.5 IP0.5
Timer 2 Overflow P1.5 / AN5 / T2EX P1.3 / INT6 / CC3
TF2 IRCON.6 EXF2
EXEN2
>1 ET2 IEN0.5 IEX6 002B H
IRCON.7
IEN1.7 IRCON.5 EX6 IEN1.5 EA Bit addressable Request flag is cleared by hardware IEN0.7 006B H
MCB03305
Figure 23 Interrupt Structure, Overview Part 3
Semiconductor Group
47
1997-12-01
C505 / C505C C505A / C505CA
Fail Save Mechanisms The C505 offers enhanced fail safe mechanisms, which allow an automatic recovery from software upset or hardware failure : - a programmable watchdog timer (WDT), with variable time-out period from 192 s up to approx. 412.5 ms at 16 MHz. - an oscillator watchdog (OWD) which monitors the on-chip oscillator and forces the microcontroller into reset state in case the on-chip oscillator fails; it also provides the clock for a fast internal reset after power-on. The watchdog timer in the C505 is a 15-bit timer, which is incremented by a count rate of fOSC/12 upto fOSC/192. The system clock of the C505 is divided by two prescalers, a divide-by-two and a divide-by-16 prescaler. For programming of the watchdog timer overflow rate, the upper 7 bits of the watchdog timer can be written. Figure 24 shows the block diagram of the watchdog timer unit.
0
7 WDTL 14 8 WDTH
f OSC / 6
2
16
WDT Reset - Request IP0 (A9 H )
OWDS WDTS
WDTPSEL
External HW Reset 76 WDTREL (86 H ) Control Logic WDT
SWDT
0
IEN0 (A8 H ) IEN1 (B8 H )
MCB03306
Figure 24 Block Diagram of the Programmable Watchdog Timer The watchdog timer can be started by software (bit SWDT in SFR IEN1) but it cannot be stopped during active mode of the device. If the software fails to refresh the running watchdog timer an internal reset will be initiated on watchdog timer overflow. For refreshing of the watchdog timer the content of the SFR WDTREL is transfered to the upper 7-bit of the watchdog timer. The refresh sequence consists of two consequtive instructions which set the bits WDT and SWDT each. The reset cause (external reset or reset caused by the watchdog) can be examined by software (flag WDTS). It must be noted, however, that the watchdog timer is halted during the idle mode and power down mode of the processor.
Semiconductor Group
48
1997-12-01
C505 / C505C C505A / C505CA
Oscillator Watchdog The oscillator watchdog unit serves for three functions: - Monitoring of the on-chip oscillator's function The watchdog supervises the on-chip oscillator's frequency; if it is lower than the frequency of the auxiliary RC oscillator in the watchdog unit, the internal clock is supplied by the RC oscillator and the device is brought into reset; if the failure condition disappears (i.e. the on-chip oscillator has a higher frequency than the RC oscillator), the part, in order to allow the oscillator to stabilize, executes a final reset phase of typ. 1 ms; then the oscillator watchdog reset is released and the part starts program execution from address 0000H again. - Fast internal reset after power-on The oscillator watchdog unit provides a clock supply for the reset before the on-chip oscillator has started. The oscillator watchdog unit also works identically to the monitoring function. - Control of external wake-up from software power-down mode When the power-down mode is left by a low level at the P3.2/INT0 pin or the P4.1/RXDC pin, the oscillator watchdog unit assures that the microcontroller resumes operation (execution of the power-down wake-up interrupt) with the nominal clock rate. In the power-down mode the RC oscillator and the on-chip oscillator are stopped. Both oscillators are started again when power-down mode is released. When the on-chip oscillator has a higher frequency than the RC oscillator, the microcontroller starts program execution by processing a power down interrupt after a final delay of typ. 1 ms in order to allow the on-chip oscillator to stabilize.
Semiconductor Group
49
1997-12-01
C505 / C505C C505A / C505CA
EWPD (PCON1.7) P4.1 / RXDC P3.2 / INT0 Control Logic
WS (PCON1.4)
Power - Down Mode Activated Power-Down Mode Wake - Up Interrupt Control Logic Internal Reset
Start / Stop RC Oscillator
f RC
3 MHz Start / Stop
10
f1
Frequency Comparator
f 2 Delay
>1
XTAL1 XTAL2 On-Chip Oscillator
f2
IP0 (A9 H )
OWDS
Int. Clock
MCB03308
Figure 25 Functional Block Diagram of the Oscillator Watchdog
Semiconductor Group
50
1997-12-01
C505 / C505C C505A / C505CA
Power Saving Modes The C505 provides two basic power saving modes, the idle mode and the power down mode. Additionally, a slow down mode is available. This power saving mode reduces the internal clock rate in normal operating mode and it can be also used for further power reduction in idle mode. - Idle mode In the idle mode the main oscillator of the C505 continues to run, but the CPU is gated off from the clock signal. All peripheral units are further provided with the clock. The CPU status is preserved in its entirety. The idle mode can be terminated by any enabled interrupt of a peripheral unit or by a hardware reset. - Power down mode The operation of the C505 is completely stopped and the oscillator is turned off. This mode is used to save the contents of the internal RAM with a very low standby current. Power down mode is entered by software and can be left by reset or by a short low pulse at pin P3.2/ INT0.or P4.1/RXDC. - Slow down mode The controller keeps up the full operating functionality, but its normal clock frequency is internally divided by 32. This slows down all parts of the controller, the CPU and all peripherals, to 1/32-th of their normal operating frequency. Slowing down the frequency significantly reduces power consumption. In the power down mode of operation, VCC can be reduced to minimize power consumption. It must be ensured, however, that VCC is not reduced before the power down mode is invoked, and that VCC is restored to its normal operating level, before the power down mode is terminated. Table 11 gives a general overview of the entry and exit procedures of the power saving modes. Table 11 Power Saving Modes Overview Mode Entering (Instruction Example) ORL PCON, #01H ORL PCON, #20H Leaving by Remarks
Idle Mode
Ocurrence of an interrupt from a peripheral unit Hardware Reset
CPU clock is stopped; CPU maintains their data; peripheral units are active (if enabled) and provided with clock Oscillator is stopped; contents of on-chip RAM and SFR's are maintained; Oscillator frequency is reduced to 1/32 of its nominal frequency
Power Down Mode
ORL PCON, #02H ORL PCON, #40H
Hardware Reset Short low pulse at pin P3.2/INT0 or P4.1/RXDC ANL PCON,#0EFH or Hardware Reset
Slow Down Mode
ORL PCON,#10H
Semiconductor Group
51
1997-12-01
C505 / C505C C505A / C505CA
OTP Memory Operation (C505A and C505CA only) The C505A/C505CA contains a 32k byte one-time programmable (OTP) program memory. With the C505A/C505CA fast programming cycles are achieved (1 byte in 100 sec). Also several levels of OTP memory protection can be selected. For programming of the device, the C505A/C505CA must be put into the programming mode. This typically is done not in-system but in a special programming hardware. In the programming mode the C505A/C505CA operates as a slave device similar as an EPROM standalone memory device and must be controlled with address/data information, control lines, and an external 11.5V programming voltage. Figure 26 shows the pins of the C505A/C505CA which are required for controlling of the OTP programming mode.
V CC
V SS
A0 - A7 / A8 - A14 PALE
Port 2
Port 0
D0 - D7
EA / V PP PMSEL0 PMSEL1 PROG
C505A C505CA
PRD
RESET XTAL1 XTAL2 PSEN PSEL
MCS03637
Figure 26 Programming Mode Configuration
Semiconductor Group
52
1997-12-01
C505 / C505C C505A / C505CA
Pin Configuration in Programming Mode
33 32 31 30 29 28 27 26 25 24 23 D3 D2 D1 D0 N.C. N.C. N.C. N.C. N.C. N.C. N.C. 34 35 36 37 38 39 40 41 42 43 44 22 21 20 19 18 17 16 15 14 13 12 A4 / A12 A3 / A11 A2 / A10 A1 / A9 A0 / A8 V CC V SS XTAL1 XTAL2 N.C. N.C.
N.C. N.C. N.C. RESET PMSEL0 N.C. PMSEL1 PSEL PRD PALE N.C.
D4 D5 D6 D7 EA / V PP N.C. PROG PSEN A7 A6 / A14 A5 / A13
C505A C505CA 1 2 3 4 5 6 7 8 9 10 11
MCP03638
Figure 27 P-MQFP-44 Pin Configuration of the C505A/C505CA in Programming Mode (Top View)
Semiconductor Group
53
1997-12-01
C505 / C505C C505A / C505CA
The following table 12 contains the functional description of all C505A/C505CA pins which are required for OTP memory programming. Table 12 Pin Definitions and Functions in Programming Mode Symbol RESET Pin Number 4 I/O *) I Function Reset This input must be at static "1" (active) level during the whole programming mode. Programming mode selection pins These pins are used to select the different access modes in programming mode. PMSEL1,0 must satisfy a setup time to the rising edge of PALE. When the logic level of PMSEL1,0 is changed, PALE must be at low level. PMSEL1 0 0 1 1 PSEL 8 I PMSEL0 0 1 0 1 Access Mode Reserved Read version bytes Program/read lock bits Program/read OTP memory byte
PMSEL0 PMSEL1
5 7
I I
Basic programming mode select This input is used for the basic programming mode selection and must be switched according figure 3-1. Programming mode read strobe This input is used for read access control for OTP memory read, Version Register read, and lock bit read operations. Programming address latch enable PALE is used to latch the high address lines. The high address lines must satisfy a setup and hold time to/from the falling edge of PALE. PALE must be at low level when the logic level of PMSEL1,0 is changed. XTAL2 Output of the inverting oscillator amplifier. XTAL1 Input to the oscillator amplifier. Circuit ground potential must be applied in programming mode. Power supply terminal must be applied in programming mode.
PRD
9
I
PALE
10
I
XTAL2 XTAL1
14 15 16 17
O I - -
VSS VCC
*) I = Input O = Output
Semiconductor Group
54
1997-12-01
C505 / C505C C505A / C505CA
Table 12 Pin Definitions and Functions in Programming Mode (cont'd) Symbol P2.0-7 Pin Number 18-25 I/O *) I Function Address lines P2.0-7 are used as multiplexed address input lines A0-A7 and A8-A14. A8-A14 must be latched with PALE. Program store enable This input must be at static "0" level during the whole programming mode. Programming mode write strobe This input is used in programming mode as a write strobe for OTP memory program, and lock bit write operations During basic programming mode selection a low level must be applied to PROG. External Access / Programming voltage This pin must be at 11.5V (VPP) voltage level during programming of an OTP memory byte or lock bit. During an OTP memory read operation this pin must be at VIH high level. This pin is also used for basic programming mode selection. At basic programming mode selection a low level must be applied to EA/VPP. Data lines 0-7 During programming mode, data bytes are transferred via the bidirectional port 0 data lines. Not Connected These pins should not be connected in programming mode.
PSEN
26
I
PROG
27
I
EA/VPP
29
-
D7-0
30-37
I/O
N.C.
1-3, 6, 11-13, 28, 38-44
-
*) I = Input O = Output
Semiconductor Group
55
1997-12-01
C505 / C505C C505A / C505CA
Basic Programming Mode Selection The basic programming mode selection scheme is shown in figure 28.
V CC
Clock (XTAL1 / XTAL2) RESET PSEN PMSEL1,0 PROG PRD PSEL PALE "0" "0" "1" 0,1 Stable "1" "0"
5V
V PP
EA / V PP During this period signals are not actively driven 0V
V IH
Ready for access mode selection
MCS03639
Figure 28 Basic Programming Mode Selection
Semiconductor Group
56
1997-12-01
C505 / C505C C505A / C505CA
Table 13 Access Modes Selection Access Mode Program OTP memory byte Read OTP memory byte Program OTP lock bits Read OTP lock bits Read OTP version byte EA/ VPP VPP VIH VPP VIH VIH H H L H Byte addr. of version byte H H H L PROG PRD H PMSEL 1 H 0 H Address (Port 2) A0-7 A8-14 - Data (Port 0) D0-7 D1,D0 see table 14 D0-7
Lock Bits Programming / Read The C505A/C505CA has two programmable lock bits which, when programmed according table 14, provide four levels of protection for the on-chip OTP code memory. The state of the lock bits can also be read. Table 14 Lock Bit Protection Types Lock Bits at D1,D0 D1 1 D0 1 Protection Protection Type Level Level 0 The OTP lock feature is disabled. During normal operation of the C505A/C505CA, the state of the EA pin is not latched on reset. During normal operation of the C505A/C505CA, MOVC instructions executed from external program memory are disabled from fetching code bytes from internal memory. EA is sampled and latched on reset. An OTP memory read operation is only possible using the ROM/OTP verification mode 2 for protection level 1. Further programming of the OTP memory is disabled (reprogramming security). Same as level 1, but also OTP memory read operation using OTP verification mode is disabled. Same as level 2; but additionally external code execution by setting EA=low during normal operation of the C505A/C505CA is no more possible. External code execution, which is initiated by an internal program (e.g. by an internal jump instruction above the ROM boundary), is still possible.
1
0
Level 1
0 0
1 0
Level 2 Level 3
Semiconductor Group
57
1997-12-01
C505 / C505C C505A / C505CA
Absolute Maximum Ratings Ambient temperature under bias (TA) ......................................................... Storage temperature (Tstg) .......................................................................... Voltage on VCC pins with respect to ground (VSS) ....................................... Voltage on any pin with respect to ground (VSS) ......................................... Input current on any pin during overload condition..................................... Absolute sum of all input currents during overload condition ..................... Power dissipation........................................................................................ - 40 C to 125 C - 65 C to 150 C - 0.5 V to 6.5 V - 0.5 V to VCC +0.5 V - 10 mA to 10 mA I 100 mA I TBD
Note: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage of the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for longer periods may affect device reliability. During overload conditions (VIN > VCC or VIN < VSS) the Voltage on VCC pins with respect to ground (VSS) must not exceed the values defined by the absolute maximum ratings.
Semiconductor Group
58
1997-12-01
C505 / C505C C505A / C505CA
DC Characteristics
VCC = 5 V + 10%, - 15%; VSS = 0 V
TA = 0 to 70 C for the SAB- versions TA = - 40 to 85 C for the SAF- versions TA = - 40 to 110 C for the SAH- versions TA = - 40 to 125 C for the SAK- versions
Limit Values min. max. 0.2 VCC - 0.1 V 0.2 VCC - 0.3 V 0.2 VCC + 0.1 V V V V V V V V V V A A - - - - - - Unit Test Condition
Parameter Input low voltages all except EA, RESET EA pin RESET pin Input high voltages all except XTAL1, RESET XTAL1 pin RESET pin Output low voltages Ports 1, 2, 3, 4 Port 0, ALE, PSEN Output high voltages Ports 1, 2, 3, 4 Port 0 in external bus mode, ALE, PSEN Logic 0 input current Ports 1, 2, 3, 4 Logical 0-to-1 transition current Ports 1, 2, 3, 4 Input leakage current Port 0, AN0-7 (Port 1), EA Pin capacitance Overload current Programming voltage Supply current at EA/VCC Notes see next but one page 61
Symbol
VIL VIL1 VIL2 VIH VIH1 VIH2 VOL VOL1 VOH VOH2
- 0.5 - 0.5 - 0.5
0.2 VCC + 0.9 VCC + 0.5 0.7 VCC VCC + 0.5 0.6 VCC VCC + 0.5 - - 2.4 0.9 VCC 2.4 0.9 VCC - 10 - 65 0.45 0.45 - - - - - 70 - 650
IOL = 1.6 mA 1) IOL = 3.2 mA 1) IOH = - 80 A IOH = - 10 A) IOH = - 800 A IOH = - 80 A 2) VIN = 0.45 V VIN = 2 V
IIL ITL
ILI CIO IOV VPP
- - - 10.9
1 10 5 12.1 30
A pF mA
0.45 < VIN < VCC
fc 1 MHz, TA = 25 C
3) 4)
V mA
11.5 V 5% 5)
5) 6)
Semiconductor Group
59
1997-12-01
C505 / C505C C505A / C505CA
Power Supply Currents Parameter C505 / C505C Active Mode Idle Mode 12 MHz 20 MHz 12 MHz 20 MHz Symbol Limit Values typ. 12) max.13) 19.7 32 11.7 17.8 4.4 4.9 3.6 4.0 7 18.2 28.8 9.4 14.1 3.5 4.2 3.0 3.4 40 TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD Unit Test Condition mA mA mA mA A mA mA mA mA A
7)
ICC ICC ICC ICC ICC ICC ICC ICC IPD ICC ICC ICC ICC ICC ICC ICC ICC IPD
8)
Active Mode with 12 MHz slow-down enabled 20 MHz Idle Mode with 12 MHz slow-down enabled 20 MHz Power down current C505A Active Mode C505CA Idle Mode 12 MHz 20 MHz 12 MHz 20 MHz
9)
10)
VCC = 2..5.5 V 11)
7)
8)
Active Mode with 12 MHz slow-down enabled 20 MHz Idle Mode with 12 MHz slow-down enabled 20 MHz Power down current Notes see next page 61
9)
10)
VCC = 2..5.5 V 11)
Semiconductor Group
60
1997-12-01
C505 / C505C C505A / C505CA
Notes: 1) Capacitive loading on ports 0 and 2 may cause spurious noise pulses to be superimposed on the VOL of ALE and port 3. The noise is due to external bus capacitance discharging into the port 0 and port 2 pins when these pins make 1-to-0 transitions during bus operation. In the worst case (capacitive loading > 100 pF), the noise pulse on ALE line may exceed 0.8 V. In such cases it may be desirable to qualify ALE with a schmitt-trigger, or use an address latch with a schmitt-trigger strobe input. 2) Capacitive loading on ports 0 and 2 may cause the VOH on ALE and PSEN to momentarily fall below the 0.9 VCC specification when the address lines are stabilizing. 3) Overload conditions occur if the standard operating conditions are exceeded, ie. the voltage on any pin exceeds the specified range (i.e. VOV > VCC + 0.5 V or VOV < VSS - 0.5 V). The supply voltage VCC and VSS must remain within the specified limits. The absolute sum of input currents on all port pins may not exceed 50 mA. 4) Not 100% tested, guaranteed by design characterization. 5) Only valid for C505A and C505CA. 6) Only valid for C505A and C505CA in programming mode. 7) ICC (active mode) is measured with: XTAL1 driven with tR , tF = 5 ns, 50% duty cycle , VIL = VSS + 0.5 V, VIH = VCC - 0.5 V; XTAL2 = N.C.; EA = Port 0 = RESET = VCC ; all other pins are disconnected. 8) ICC (idle mode) is measured with all output pins disconnected and with all peripherals disabled; XTAL1 driven with tR , tF = 5 ns, 50% duty cycle, VIL = VSS + 0.5 V, VIH = VCC - 0.5 V; XTAL2 = N.C.; RESET = EA = VSS ; Port0 = VCC ; all other pins are disconnected; 9) ICC (active mode with slow-down mode) is measured : TBD 10) ICC (idle mode with slow-down mode) is measured : TBD 11) IPD (power-down mode) is measured under following conditions: EA = Port 0 = VCC ; RESET =VSS ; XTAL2 = N.C.; XTAL1 = VSS ; VAGND = VSS ; VAREF = VCC ; all other pins are disconnected. 12) The typical ICC values are periodically measured at TA = + 25 C but not 100% tested. 13) The maximum ICC values are measured under worst case conditions (TA = 0 C or - 40 C and VCC = 5.5 V)
Semiconductor Group
61
1997-12-01
C505 / C505C C505A / C505CA
30 mA
MCD03640
CC 25
20
CC max CC typ
TBD
15 10 5 0 0 4 8 12 18 MHz f OSC 20
Figure 29 ICC Diagram of C505 and C505C C505/C505C: Power Supply Current Calculation Formulas Parameter Active mode Idle mode Active mode with slow-down enabled Idle mode with slow-down enabled Symbol Formula TBD TBD TBD TBD TBD TBD TBD TBD
ICC typ ICC max ICC typ ICC max ICC typ ICC max ICC typ ICC max
Note: fosc is the oscillator frequency in MHz. ICC values are given in mA.
Semiconductor Group
62
1997-12-01
C505 / C505C C505A / C505CA
30 mA
MCD03641
CC 25
20
CC max CC typ
TBD
15 10 5 0 0 4 8 12 18 MHz f OSC 20
Figure 30 ICC Diagram of C505A and C505CA C505A : Power Supply Current Calculation Formulas Parameter Active mode Idle mode Active mode with slow-down enabled Idle mode with slow-down enabled Symbol Formula TBD TBD TBD TBD TBD TBD TBD TBD
ICC typ ICC max ICC typ ICC max ICC typ ICC max ICC typ ICC max
Note: fosc is the oscillator frequency in MHz. ICC values are given in mA.
Semiconductor Group
63
1997-12-01
C505 / C505C C505A / C505CA
A/D Converter Characteristics of C505 and C505C
VCC = 5 V + 10%, - 15%; VSS = 0 V
TA = 0 to 70 C for the SAB- versions TA = - 40 to 85 C for the SAF- versions TA = - 40 to 110 C for the SAH- versions TA = - 40 to 125 C for the SAK- versions
4 V VAREF VCC + 0.1 V; VSS - 0.1 V VAGND VSS + 0.2 V
Parameter Analog input voltage Sample time Symbol Limit Values min. max. Unit Test Condition V ns
1)
VAIN tS
VAGND 0.2 -
VAREF +
0.2 64 x tIN 32 x tIN 16 x tIN 8 x tIN 320 x tIN 160 x tIN 80 x tIN 40 x tIN 2
Prescaler / 32 Prescaler / 16 Prescaler / 8 Prescaler / 4 2) Prescaler / 32 Prescaler / 16 Prescaler / 8 Prescaler / 4 3)
Conversion cycle time
tADCC
-
ns
Total unadjusted error
TUE
- - - -
LSB
VSS + 0.5 V VAIN VCC - 0.5 V
4)
Internal resistance of RAREF reference voltage source Internal resistance of analog source ADC input capacitance
Notes see next page.
tADC / 500 k
-1
tADC in [ns] tS in [ns]
6)
5) 6)
RASRC CAIN
tS / 500
-1 50
k pF
2) 6)
Clock calculation table: Clock Prescaler ADCL1, 0 Ratio / 32 / 16 /8 /4 1 1 0 0 1 0 1 0
tADC
32 x tIN 16 x tIN 8 x tIN 4 x tIN
tS
64 x tIN 32 x tIN 16 x tIN 8 x tIN
tADCC
320 x tIN 160 x tIN 80 x tIN 40 x tIN
Further timing conditions :
tADC min = 800 ns tIN = 1 / fOSC = tCLP
Semiconductor Group
64
1997-12-01
C505 / C505C C505A / C505CA
Notes: 1) VAIN may exeed VAGND or VAREF up to the absolute maximum ratings. However, the conversion result in these cases will be 00H or FFH, respectively. 2) During the sample time the input capacitance CAIN must be charged/discharged by the external source. The internal resistance of the analog source must allow the capacitance to reach their final voltage level within tS. After the end of the sample time tS, changes of the analog input voltage have no effect on the conversion result. 3) This parameter includes the sample time tS, the time for determining the digital result. Values for the conversion clock tADC depend on programming and can be taken from the table on the previous page. 4) TUE (max.) is tested at - 40 TA 125 C; VCC 5.5 V; VAREF VCC + 0.1 V and VSS VAGND. It is guaranteed by design characterization for all other voltages within the defined voltage range. If an overload condition occurs on maximum 2 unused analog input pins and the absolute sum of input overload currents on all analog input pins does not exceed 10 mA, an additional conversion error of 1/2 LSB is permissible. 5) During the conversion the ADC's capacitance must be repeatedly charged or discharged. The internal resistance of the reference source must allow the capacitance to reach their final voltage level within the indicated time. The maximum internal resistance results from the programmed conversion timing. 6) Not 100% tested, but guaranteed by design characterization.
Semiconductor Group
65
1997-12-01
C505 / C505C C505A / C505CA
A/D Converter Characteristics of C505A and C505CA
VCC = 5 V + 10%, - 15%; VSS = 0 V
TA = 0 to 70 C for the SAB- versions TA = - 40 to 85 C for the SAF- versions TA = - 40 to 110 C for the SAH- versions TA = - 40 to 125 C for the SAK- versions
4 V VAREF VCC + 0.1 V; VSS - 0.1 V VAGND VSS + 0.2 V
Parameter Analog input voltage Sample time Symbol Limit Values min. max. Unit V ns Test Condition
1)
VAIN tS
VAGND
-
VAREF
64 x tIN 32 x tIN 16 x tIN 8 x tIN 384 x tIN 192 x tIN 96 x tIN 48 x tIN 2 4
Prescaler / 32 Prescaler / 16 Prescaler / 8 Prescaler / 4 2) Prescaler / 32 Prescaler / 16 Prescaler / 8 Prescaler / 4 3)
Conversion cycle time
tADCC
-
ns
Total unadjusted error
TUE
- -
LSB LSB
VSS + 0.5 V VAIN VCC-0.5 V
4)
VSS < VAIN < VCC + 0.5 V VCC - 0.5 V < VAIN < VCC
tADC in [ns] tS in [ns]
6) 5) 6)
4)
Internal resistance of reference voltage source Internal resistance of analog source ADC input capacitance
Notes see next page.
RAREF RASRC CAIN
- - -
tADC / 250 k
- 0.25
tS / 500
- 0.25 50
k pF
2) 6)
Clock calculation table: Clock Prescaler ADCL1, 0 Ratio / 32 / 16 /8 /4 1 1 0 0 1 0 1 0
tADC
32 x tIN 16 x tIN 8 x tIN 4 x tIN
tS
64 x tIN 32 x tIN 16 x tIN 8 x tIN
tADCC
384 x tIN 192 x tIN 96 x tIN 48 x tIN
Further timing conditions :
tADC min = 500 ns tIN = 1 / fOSC = tCLP
66 1997-12-01
Semiconductor Group
C505 / C505C C505A / C505CA
Notes: 1) VAIN may exeed VAGND or VAREF up to the absolute maximum ratings. However, the conversion result in these cases will be X000H or X3FFH, respectively. 2) During the sample time the input capacitance CAIN must be charged/discharged by the external source. The internal resistance of the analog source must allow the capacitance to reach their final voltage level within tS. After the end of the sample time tS, changes of the analog input voltage have no effect on the conversion result. 3) This parameter includes the sample time tS, the time for determining the digital result and the time for the calibration. Values for the conversion clock tADC depend on programming and can be taken from the table on the previous page. 4) TUE is tested at VAREF = 5.0 V, VAGND = 0 V, VCC = 4.9 V. It is guaranteed by design characterization for all other voltages within the defined voltage range. If an overload condition occurs on maximum 2 unused analog input pins and the absolute sum of input overload currents on all analog input pins does not exceed 10 mA, an additional conversion error of 1/2 LSB is permissible. 5) During the conversion the ADC's capacitance must be repeatedly charged or discharged. The internal resistance of the reference source must allow the capacitance to reach their final voltage level within the indicated time. The maximum internal resistance results from the programmed conversion timing. 6) Not 100% tested, but guaranteed by design characterization.
Semiconductor Group
67
1997-12-01
C505 / C505C C505A / C505CA
AC Characteristics (12 MHz, 0.5 Duty Cycle)
VCC = 5 V + 10%, - 15%; VSS = 0 V
TA = 0 to 70 C for the SAB- versions TA = - 40 to 85 C for the SAF- versions TA = - 40 to 110 C for the SAH- versions TA = - 40 to 125 C for the SAK- versions
(CL for port 0, ALE and PSEN outputs = 100 pF; CL for all other outputs = 80 pF) Program Memory Characteristics Parameter Symbol Limit Values 12 MHz clock Variable Clock 0.5 Duty Cycle 1/CLP = 2 MHz to 12 MHz min. ALE pulse width Address setup to ALE Address hold after ALE ALE to valid instruction in ALE to PSEN PSEN pulse width PSEN to valid instruction in Input instruction hold after PSEN Input instruction float after PSEN Address valid after PSEN Address to valid instruction in Address float to PSEN
*)
Unit
max. - - - 80 - - 60 - 32 - 148 -
min. CLP - 40 CLP/2 - 25 CLP/2 - 25 - CLP/2 - 20 3/2 CLP - 30 - 0 - CLP/2 - 5 - 0
max. - - - 2 CLP - 87 - - 3/2 CLP - 65 - CLP/2 - 10 - 5/2 CLP - 60 - ns ns ns ns ns ns ns ns ns ns ns ns
tLHLL tAVLL tLLAX tLLIV tLLPL tPLPH tPLIV tPXIX tPXIZ *) tPXAV *) tAVIV tAZPL
43 17 17 - 22 95 - 0 - 37 - 0
Interfacing the C505 to devices with float times up to 37 ns is permissible. This limited bus contention will not cause any damage to port 0 drivers.
Semiconductor Group
68
1997-12-01
C505 / C505C C505A / C505CA
AC Characteristics (12 MHz, 0.5 Duty Cycle, cont'd) External Data Memory Characteristics Parameter Symbol 12 MHz clock 0.5 Duty Cycle min. RD pulse width WR pulse width Address hold after ALE RD to valid data in Data hold after RD Data float after RD ALE to valid data in Address to valid data in ALE to WR or RD Address valid to WR WR or RD high to ALE high Data valid to WR transition Data setup before WR Data hold after WR Address float after RD max. - - - 118 - 63 200 220 175 - 67 - - - 0 Limit Values Variable Clock 1/CLP = 2 MHz to 12 MHz min. 3 CLP - 70 3 CLP - 70 CLP - 27 - 0 - - - 3/2 CLP - 50 2 CLP - 97 CLP/2 - 25 CLP/2 - 37 CLP/2 - 27 - max. - - - 5/2 CLP- 90 - CLP - 20 4 CLP - 133 ns ns ns ns ns ns ns Unit
tRLRH tWLWH tLLAX2 tRLDV tRHDX tRHDZ tLLDV tAVDV tLLWL tAVWL tWHLH tQVWX tQVWH tWHQX tRLAZ
180 180 56 - 0 - - - 75 70 17 5 170 15 -
9/2 CLP - 155 ns 3/2 CLP + 50 ns - CLP/2 + 25 - - 0 ns ns ns ns ns ns
7/2 CLP - 122 -
External Clock Drive Characteristics Parameter Symbol Limit Values Variable Clock Freq. = 2 MHz to 12 MHz min. Oscillator period High time Low time Rise time Fall time Oscillator duty cycle CLP TCLH TCLL 83.3 20 20 - - 0.5 max. 500 ns ns ns ns ns - Unit
CLP-TCLL CLP-TCLH
12 12 0.5
tR tF
DC
Semiconductor Group
69
1997-12-01
C505 / C505C C505A / C505CA
AC Characteristics (16 MHz, 0.4 to 0.6 Duty Cycle)
VCC = 5 V +10%, - 15%; VSS = 0 V
TA = 0 to 70 C for the SAB- versions TA = 40 to 85 C for the SAF- versions
(CL for port 0, ALE and PSEN outputs = 100 pF; CL for all other outputs = 80 pF) Program Memory Characteristics Parameter Symbol Limit Values 16-MHz clock Variable Clock Duty Cycle 1/CLP= 2 MHz to 16 MHz 0.4 to 0.6 min. ALE pulse width Address setup to ALE Address hold after ALE ALE to valid instruction in ALE to PSEN PSEN pulse width PSEN to valid instruction in Input instruction hold after PSEN Input instruction float after PSEN Address valid after PSEN Address to valid instruction in Address float to PSEN
*)
Unit
max. - - - 75 - - 38 - 15 - 95 -
min. CLP - 15 TCLHmin -15 - TCLLmin -15 CLP+ TCLHmin -15 - 0 - TCLLmin - 5 - -5
max. - - 2 CLP - 50 - - ns ns ns ns ns ns
tLHLL tAVLL tLLAX tLLIV tLLPL tPLPH tPLIV tPXIX tPXIZ *) tPXAV *) tAVIV tAZPL
48 10 10 - 10 73 - 0 - 20 - -5
TCLHmin -15 -
CLP+ ns TCLHmin- 50 - TCLLmin -10 - 2 CLP + TCLHmin -55 - ns ns ns ns ns
Interfacing the C505 to devices with float times up to 20 ns is permissible. This limited bus contention will not cause any damage to port 0 drivers.
Semiconductor Group
70
1997-12-01
C505 / C505C C505A / C505CA
AC Characteristics (16 MHz, 0.4 to 0.6 Duty Cycle, cont'd) External Data Memory Characteristics Parameter Symbol 16-MHz clock Duty Cycle 0.4 to 0.6 min. RD pulse width WR pulse width Address hold after ALE RD to valid data in Data hold after RD Data float after RD ALE to valid data in Address to valid data in ALE to WR or RD Address valid to WR WR or RD high to ALE high Data valid to WR transition Data setup before WR Data hold after WR Address float after RD max. - - - 100 - 51 200 200 103 - 40 - - - 0 Limit Values Variable Clock 1/CLP= 2 MHz to 16 MHz min. 3 CLP - 30 3 CLP - 30 CLP - 15 - 0 - - - CLP + TCLLmin - 15 2 CLP - 30 TCLHmin - 15 TCLLmin - 20 3 CLP + TCLLmin - 50 TCLHmin - 20 - max. - - - 2 CLP+ TCLHmin - 50 - CLP - 12 4 CLP - 50 4 CLP + TCLHmin -75 CLP+ TCLLmin+ 15 - TCLHmin + 15 - - - 0 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Unit
tRLRH tWLWH tLLAX2 tRLDV tRHDX tRHDZ tLLDV tAVDV tLLWL tAVWL tWHLH tQVWX tQVWH tWHQX tRLAZ
158
158 48 - 0 - - - 73 95 10 5 163 5 -
Semiconductor Group
71
1997-12-01
C505 / C505C C505A / C505CA
AC Characteristics (16 MHz, 0.4 to 0.6 Duty Cycle, cont'd) External Clock Drive Characteristics Parameter Symbol CPU Clock = 16 MHz Duty Cycle 0.4 to 0.6 min. Oscillator period High time Low time Rise time Fall time Oscillator duty cycle Clock cycle CLP TCLH TCLL 62.5 25 25 - - 0.4 25 max. 62.5 - - 10 10 0.6 37.5 Variable CPU Clock 1/CLP = 2 to 16 MHz min. 62.5 25 25 - - 25 / CLP CLP * DCmin max. 500 CLP - TCLL CLP - TCLH 10 10 1 - 25 / CLP ns ns ns ns ns - Unit
tR tF
DC TCL
CLP * DCmax ns
Note: The 16 MHz values in the tables are given as an example for a typical duty cycle variation of the oscillator clock from 0.4 to 0.6.
Semiconductor Group
72
1997-12-01
C505 / C505C C505A / C505CA
AC Characteristics (20 MHz, 0.5 Duty Cycle)
VCC = 5 V + 10%, - 15%; VSS = 0 V
TA = 0 to 70 C for the SAB- versions TA = - 40 to 85 C for the SAF- versions
(CL for port 0, ALE and PSEN outputs = 100 pF; CL for all other outputs = 80 pF) Program Memory Characteristics Parameter Symbol Limit Values 20 MHz clock Variable Clock 0.5 Duty Cycle 1/CLP = 2 MHz to 20 MHz min. ALE pulse width Address setup to ALE Address hold after ALE ALE to valid instruction in ALE to PSEN PSEN pulse width PSEN to valid instruction in Input instruction hold after PSEN Input instruction float after PSEN Address valid after PSEN Address to valid instruction in Address float to PSEN
*)
Unit
max. - - - 55 - - 25 - 20 - 65 -
min. CLP - 15 CLP/2 - 15 CLP/2 - 15 - CLP/2 - 15 3/2 CLP - 15 - 0 - CLP/2 - 5 - -5
max. - - - 2 CLP - 45 - - 3/2 CLP - 50 - CLP/2 - 5 - 5/2 CLP - 60 - ns ns ns ns ns ns ns ns ns ns ns ns
tLHLL tAVLL tLLAX tLLIV tLLPL tPLPH tPLIV tPXIX tPXIZ *) tPXAV *) tAVIV tAZPL
35 10 10 - 10 60 - 0 - 20 - -5
Interfacing the C505 to devices with float times up to 20 ns is permissible. This limited bus contention will not cause any damage to port 0 drivers.
Semiconductor Group
73
1997-12-01
C505 / C505C C505A / C505CA
AC Characteristics (20 MHz, 0.5 Duty Cycle, cont'd) External Data Memory Characteristics Parameter Symbol 20 MHz clock 0.5 Duty Cycle min. RD pulse width WR pulse width Address hold after ALE RD to valid data in Data hold after RD Data float after RD ALE to valid data in Address to valid data in ALE to WR or RD Address valid to WR WR or RD high to ALE high Data valid to WR transition Data setup before WR Data hold after WR Address float after RD max. - - - 75 - 38 150 150 90 - 40 - - - 0 Limit Values Variable Clock 1/CLP = 2 MHz to 20 MHz min. 3 CLP - 30 3 CLP - 30 CLP - 15 - 0 - - - 3/2 CLP - 15 2 CLP - 30 CLP/2 - 15 CLP/2 - 20 7/2 CLP - 50 CLP/2 - 20 - max. - - - 5/2 CLP- 50 - CLP - 12 4 CLP - 50 9/2 CLP - 75 - CLP/2 + 15 - - - 0 ns ns ns ns ns ns ns ns ns ns ns ns ns ns Unit
tRLRH tWLWH tLLAX2 tRLDV tRHDX tRHDZ tLLDV tAVDV tLLWL tAVWL tWHLH tQVWX tQVWH tWHQX tRLAZ
120
120 35 - 0 - - - 60 70 10 5 125 5 -
3/2 CLP + 15 ns
External Clock Drive Characteristics Parameter Symbol Limit Values Variable Clock Freq. = 2 MHz to 20 MHz min. Oscillator period High time Low time Rise time Fall time Oscillator duty cycle CLP TCLH TCLL 50 15 15 - - 0.5 max. 500 CLP-TCLL CLP-TCLH 10 10 0.5 ns ns ns ns ns - Unit
tR tF
DC
Semiconductor Group
74
1997-12-01
C505 / C505C C505A / C505CA
t LHLL
ALE
t AVLL t LLPL t LLIV t PLIV
PSEN
t PLPH
t AZPL t LLAX
t PXAV t PXIZ t PXIX
Port 0
A0 - A7
Instr.IN
A0 - A7
t AVIV
Port 2
A8 - A15
A8 - A15
MCT00096
Figure 31 Program Memory Read Cycle
Semiconductor Group
75
1997-12-01
C505 / C505C C505A / C505CA
t WHLH
ALE
PSEN
t LLDV t LLWL
RD
t RLRH
t RLDV t AVLL t LLAX2 t RLAZ
Port 0 A0 - A7 from Ri or DPL Data IN
t RHDZ t RHDX
A0 - A7 from PCL Instr. IN
t AVWL t AVDV
Port 2
P2.0 - P2.7 or A8 - A15 from DPH
A8 - A15 from PCH
MCT00097
Figure 32 Data Memory Read Cycle
Semiconductor Group
76
1997-12-01
C505 / C505C C505A / C505CA
t WHLH
ALE
PSEN
t LLWL
WR
t WLWH
t QVWX t AVLL t LLAX2
A0 - A7 from Ri or DPL
t WHQX t QVWH
Data OUT A0 - A7 from PCL Instr.IN
Port 0
t AVWL
Port 2 P2.0 - P2.7 or A8 - A15 from DPH A8 - A15 from PCH
MCT00098
Figure 33 Data Memory Write Cycle
TCL H
tR
tF
XTAL1 TCL L CLP
0.7 V CC 0.2 V CC - 0.1
MCT03310
Figure 34 External Clock Drive on XTAL1
Semiconductor Group
77
1997-12-01
C505 / C505C C505A / C505CA
AC Characteristics of Programming Mode (C505A and C505CA only)
VCC = 5 V 10 %; VPP = 11.5 V 5 %; TA = 25 C 10 C
Parameter ALE pulse width PMSEL setup to ALE rising edge Symbol min. Limit Values max. - - - - - - - - - - 75 20 - 20 - ns ns ns ns ns ns s ns ns ns ns ns s ns 500 ns ns 35 10 10 10 100 0 10 10 100 100 - - 0 - 1 100 83.3 Unit
tPAW tPMS
Address setup to ALE, PROG, or PRD falling tPAS edge Address hold after ALE, PROG, or PRD falling edge Address, data setup to PROG or PRD Address, data hold after PROG or PRD PMSEL setup to PROG or PRD PMSEL hold after PROG or PRD PROG pulse width PRD pulse width Address to valid data out PRD to valid data out Data hold after PRD Data float after PRD
tPAH tPCS tPCH tPMS tPMH tPWW tPRW tPAD tPRD tPDH tPDF
PROG high between two consecutive PROG tPWH1 low pulses PRD high between two consecutive PRD low tPWH2 pulses XTAL clock period
tCLKP
Semiconductor Group
78
1997-12-01
C505 / C505C C505A / C505CA
t PAW
PALE
t PMS
PMSEL1,0 H, H
t PAS
Port 2 A8-A14
t PAH
A0-A7
Port 0
D0-D7
PROG
t PWH t PCS t PWW t PCH
MCT03642
Notes: PRD must be high during a programming write cycle.
Figure 35 Programming Code Byte - Write Cycle Timing
Semiconductor Group
79
1997-12-01
C505 / C505C C505A / C505CA
t PAW
PALE
t PMS
PMSEL1,0 H, H
t PAS
Port 2 A8-A14
t PAH
A0-A7
t PAD
Port 0 D0-D7
t PDH
t PRD
PRD
t PDF t PWH
t PCS
Notes: PROG must be high during a programming read cycle.
t PRW
t PCH
MCT03643
Figure 36 Verify Code Byte - Read Cycle Timing
Semiconductor Group
80
1997-12-01
C505 / C505C C505A / C505CA
PMSEL1,0
H, L
H, L
Port 0
D0, D1
D0, D1
t PCS t PMS
PROG
t PCH t PMH t PDH t PWW t PMS t PRD t PRW t PMH t PDF
PRD Note: PALE should be low during a lock bit read / write cycle.
MCT03644
Figure 37 Lock Bit Access Timing
PMSEL1,0
L, H
Port 2
e. g. FD H
t PCH
Port 0 D0-7
t PCS t PRD t PMS
PRD
t PDH t PDF t PMH
t PRW
MCT03645
Note: PROG must be high during a programming read cycle.
Figure 38 Version Byte Read Timing
Semiconductor Group
81
1997-12-01
C505 / C505C C505A / C505CA
ROM/OTP Verification Characteristics for C505 ROM Verification Mode 1 (C505-2R and C505C-2R only) Parameter Address to valid data Symbol min. Limit Values max. 5 CLP ns Unit
tAVQV
-
P1.0 - P1.7 P2.0 - P2.6
Address
t AVQV
Port 0 Address: P1.0 - P1.7 = A0 - A7 P2.0 - P2.5 = A8 - A14 Data: P0.0 - P0.7 = D0 - D7 Data OUT Inputs: P2.6, P2.7, PSEN = V SS ALE, EA = V IH RESET = V IH2
MCT03693
Figure 39 ROM Verification Mode 1
Semiconductor Group
82
1997-12-01
C505 / C505C C505A / C505CA
ROM/OTP Verification Characteristics for C505 (cont'd) ROM/OTP Verification Mode 2 Parameter ALE pulse width ALE period Data valid after ALE Data stable after ALE P3.5 setup to ALE low Oscillator frequency Symbol min. Limit Values typ CLP 6 CLP - - max. Unit
tAWD tACY tDVA tDSA tAS
1/ CLP
-
- - 4 CLP - 4
-
- 2 CLP - - 6
ns ns ns ns ns MHz
tCL
-
t ACY t AWD
ALE
t DSA t DVA
Port 0 Data Valid
t AS
P3.5
MCT02613
Figure 40 ROM/OTP Verification Mode 2
Semiconductor Group
83
1997-12-01
C505 / C505C C505A / C505CA
VCC -0.5 V
0.2 VCC+0.9 Test Points 0.2 VCC -0.1
MCT00039
0.45 V
AC Inputs during testing are driven at VCC - 0.5 V for a logic '1' and 0.45 V for a logic '0'. Timing measurements are made at VIHmin for a logic '1' and VILmax for a logic '0'. Figure 41 AC Testing: Input, Output Waveforms
VOH -0.1 V
Timing Reference Points
VLoad +0.1 V VLoad VLoad -0.1 V
VOL +0.1 V
MCT00038
For timing purposes a port pin is no longer floating when a 100 mV change from load voltage occurs and begins to float when a 100 mV change from the loaded VOH/VOL level occurs. IOL/IOH 20 mA Figure 42 AC Testing : Float Waveforms
Crystal Oscillator Mode C XTAL2 2 - 20 MHz C XTAL1
Driving from External Source N.C.
XTAL2
External Oscillator Signal
XTAL1
Crystal Mode: C = 20 pF 10 pF (incl. stray capacitance)
MCS03311
Figure 43 Recommended Oscillator Circuits for Crystal Oscillator
Semiconductor Group
84
1997-12-01
C505 / C505C C505A / C505CA
P-MQFP-44-1 (SMD) (Plastic Metric Quad Flat Package)
Figure 44 P-MQFP-44 Package Outline
Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book "Package Information" SMD = Surface Mounted Device Semiconductor Group 85
Dimensions in mm 1997-12-01
GPM05622

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