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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
CUSTOMER P ROCUREMENT SPECIFICA TION
Z08617
NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
FEATURES
s s s
Low Power Consumption - 750 mW 32 Input/Output Lines Digital Inputs NMOS Levels with Internal Pull-Up Resistors 4 Kbytes ROM
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Hardware Watch-Dog Timer (WDT) Two Programmable 8-Bit Counter/Timers, Each with 6-Bit Programmable Prescaler Six Vectored, Priority Interrupts from Six Different Sources On-Chip RC Oscillator Clock Frequency: Up to 5MHz Low EMI Emission
s
s s s
s
Four Direct Connect LED Drive Pins
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124 Bytes of RAM
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GENERAL DESCRIPTION
The Z08617 Keyboard Controller is a member of the Z8(R) single-chip microcontroller family with 4 Kbytes of ROM. The device is housed in a 40-pin DIP package, and is manufactured in NMOS technology. The Z08617 microcontroller offers fast execution, efficient use of memory, sophisticated interrupt, input/output bitmanipulation capabilities, and easy hardware/software system expansion along with low cost and low power consumption. The Z08617 architecture is characterized by a flexible I/O scheme, an efficient register, I/O, and a number of ancillary features that are useful in many industrial and advanced scientific applications. For applications which demand powerful I/O capabilities, the Z08617 provides 32 pins dedicated to input and output. These lines are grouped into four ports, each port consists of 8 lines, and are configurable under software control to provide timing, status signals, and serial or parallel I/O ports. The Z08617 offers low EMI emission which is achieved by means of several modifications in the output drivers and clock circuitry of the device. There are two basic address spaces which are available to support this wide range of configurations: Program Memory and 124 General-Purpose Registers. The Z08617 offers two on-chip counter/timers with a large number of user-selectable modes. This unburdens the program from coping with real-time problems such as counting/timing (Figure 1).
Notes: All Signals with a preceding front slash, "/", are active Low, e.g., B//W (WORD is active Low); /B/W (BYTE is active Low, only). Power connections follow conventional descriptions below: Connection Power Ground Circuit VCC GND Device VDD VSS
DS96KEY0300
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
GENERAL DESCRIPTION (Continued)
XTAL1 XTAL2 /WDTOUT /RESET
Output Input
Vcc
GND
Port 3
Machine Timing & Instruction Control WDT ALU POR
Counter/ Timers (2)
Flags Program Memory Register Pointer
Interrupt Control
Register File 124 x 8-Bit
Program Counter
Port 2 4 I/O (Bit Programmable)
Port 0 4
Port 1 8 I/O Output Open-Drain (Byte Programmable)
I/O Output Open-Drain (Nibble Programmable)
Figure 1. Z08617 Functional Block Diagram
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
PIN IDENTIFICATION
VCC CLK Out RC In P37 P30 /RESET *GND *N/C /WDTOUT P35 GND P32 P00 P01 P02 P03 P04 P05 P06 P07 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Z08617 DIP 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 P36 P31 P27 P26 P25 P24 P23 P22 P21 P20 P33 P34 P17 P16 P15 P14 P13 P12 P11 P10
Note: * Pin 8 is connected to the chip, although used only for testing. This pin must float. Pin 7 is a test pin and must be grounded.
Figure 2. 40-Pin DIP Pin Configuration Table 1. 40-Pin DIP Pin Identification Pin # 1 2 3 4 5 6 *7 *8 9 10 Symbol V CC CLK Out RC In P37 P30 /RESET GND N/C /WDTOUT P35 Function Power Supply Clock Out Z8 Clock Port 3, Pin 7 Port 3, Pin 0 Reset Ground Not Connected Watch-Dog Timer Port 3, Pin 5 Direction Input Output Input Output Input Input Pin # 11 12 13-20 21-28 29 Symbol GND P32 P07-P00 P17-P10 P34 Function Ground Port 3, Pin 2 Port 0, Pins 0,1,2,3,4,5,6,7 Port 1, Pins 0,1,2,3,4,5,6,7 Port 3, Pin 4 Direction Input In/Output In/Output Output
30 P33 Port 3, Pin 3 Input 31-38 P27-P20 Port 2, Pins 0,1,2,3,4,5,6,7 In/Output 34-38 39 40 P24-P20 P31 P36 Port 2, Pins 0, 1, 2, 3, 4 Port 3, Pin 1 Port 3, Pin 6 In/Output Input Output
Output Output
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
ABSOLUTE MAXIMUM RATINGS
Symbol V CC T STG TA Description Supply Voltage* Storage Temp Oper Ambient Temp Min -0.3 -65 Max Units +7.0 +150 V C Stresses greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; operation of the device at any condition above those indicated in the operational sections of these specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Notes: * Voltage on all pins with respect to GND. See ordering information
STANDARD TEST CONDITIONS
The characteristics listed here apply for standard test conditions as noted. All voltages are referenced to GND. Positive current flows into the referenced pin (Figure 17).
From Output Under T est
150 pF
Figure 17. Test Load Diagram
STANDARD TEST CONDITIONS TA = 25C, VCC = GND = 0V, f = 1.0 MHz, unmeasured pins returned to ground.
Parameter Input capacitance Output capacitance I/O capacitance Max 12 pF 12 pF 12 pF
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
DC CHARACTERISTICS VCC = 4.75V to 5.25V @ 0C to -55C
Sym V IH V IL V RH V RL V OH V OL IIL IOL IIR IR1 IR2 ICC WDT Parameter Input High Voltage Input Low Voltage Reset Input High Voltage Reset Input Low Voltage Output High Voltage Output High Voltage Output Low Voltage Input Leakage Output Leakage Reset Input Current Input Current Input Current V CC Supply Current Watch-Dog Timer Min 2.0 -0.3 3.8 -0.3 2.0 2.4 -10 -10 -335 -335 -1.6 Max VCC 0.8 VCC 0.8 Typ* Unit V V V V V V V A A -477 A A mA mA mA V OL=0.4 Volt Condition
IOH = -250 A (Port 2 only) IOH = -250 A (Port 3 only) IOL = 10.0 mA (See note [1] below.) V IN = 0V, 5.25V (See note [3] below.) V IN = 0V, 5.25V (See note [2] below.) V IN = 0V, 5.25V Pull-up resistor=10.4 Kohms, V IN=0.0V Pull-up resistor = 2.4 Kohms, V IN=0.0V
0.8 10 10 -775 -775 -2.9 160 2.0
Notes: * Typical @ 25C [ 1 ] Ports P37-P34 may be used to sink 12 mA. These may be used for LEDs or as general-purpose outputs requiring high sink current. [ 2 ] P00-P07, P10-P17, P20-P25, P30-P33 as output mode opendrain as a logic one. [ 3 ] P00-P07, P10-P17, P20-P25, P30-P33 as output mode opendrain as a logic one.
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
PIN FUNCTIONS
RCIN This pin is connected between a precision resistor on the power supply from the precision RC Oscillator. CLK Out This pin is the syste m clock of the Z8 and runs at the frequency of the RC Oscillator. Any load on this pin will effect the RC Oscillator frequency.
Port 0 (P07-P00). Port 0 is an 8-bit, nibble programmable, bi-directional, NMOS compatible I/O port. These eight I/O lines can be configured under software control as a nibble input port, or as a nibble open-drain output port. When used as an I/O port, inputs are standard NMOS (Figure 5). Port P03-P00 has 10.4 Kohms ( 35%) pull-up resistors when configured as inputs.
4 Z8615 4 Port 0
I/O (Open-Drain Output)
(a) Port P00-P03 10.4 Kohms
Input
Pad
OEN Output
(b) Port P04-P07 Input Pad
OEN Output
Figure 5. Port 0 Configuration
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
PIN FUNCTIONS (Continued)
Port 1 (P17-P10). Port 1 is an 8-bit, byte programmable, bidirectional, NMOS compatible I/O port. These eight I/O lines are configured under software control program as a byte input port or as an open-drain output port. When used as an I/O port, inputs are standard NMOS (Figure 6).
Z8615
8
Port 1
I/O (Open-Drain Output)
Input
Pad
OEN Output
Figure 6. Port 1 Configuration
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER Port 2 (P27-P20). Port 2 is an 8-bit, bit programmable, bidirectional, NMOS compatible I/O port. These eight I/O lines are configured under the software control program for I/O. Port 2 can be programmed as bit-by-bit independently, as input or output, or configured to provide opendrain outputs (Figure 7). P26 and P27 have 2.4 Kohms ( 25%) pull-up resistors and are capable of sourcing 2.4 mA. P24 and P25 have 10.4 Kohms ( 35%) pull-up when configured as inputs.
Z8615
Port 2 (I/O)
OEN Open-Drain (a) Ports P20-P23 OUT Input Pad
IN
10.4 Kohms OEN Open-Drain (b) Ports P24-P25 Input Pad
OUT
IN
2.4 Kohms OEN Open-Drain Pad Input
(c) Ports P26-P27 OUT
IN
Figure 7. Port 2 Configuration
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
PIN FUNCTIONS (Continued)
Port 3 (P37-P30). Port 3 is an 8-bit, NMOS compatible fourfixed-input and four-fixed-output I/O port. These eight I/O lines have four-fixed-input (P33-P30) and four-fixed-output (P37-P34) ports. Port 3 inputs have 10.4 Kohms ( 35%) pull-up resistors and port 3 outputs are capable of driving up to four LEDs. Port 3 is configured under software control to provide the following control functions: four external interrupt request signals (IRQ3-IRQ0); timer input and output signals (TIN and TOUT - Figure 8). /RESET (input, active Low). When activated, /RESET initializes the Z08617. When /RESET is deactivated, program execution begins from the internal program location at 000CH. Reset pin has a 10.4 Kohms pullup resistor. Once this pin is pulled Low, it takes about 150 ms for microcon-troller initialization.
Z8615
Port 3 (I/O or Control)
Output Pad
(a) Port 3 P34-P37
10.4 Kohms Input (b) Port 3 P30-P33 Pad
Figure 8. Port 3 Configuration
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
FUNCTIONAL DESCRIPTION
The device incorporates special functions to enhance Zilog's Z8 applications as a keyboard controller, scientific research and advanced technologies applications. Program Memory. The 16-bit program counter addresses 4 Kbytes of program memory space at internal locations (Figure 9). The first 12 bytes of program memory are reserved for the interrupt vectors. These locations have six 16-bit vectors that correspond to the six available interrupts. Byte 12 to byte 4095 consists of on-chip, mask programmed ROM. Addresses 4096 and greater are reserved.
65535 Reserved Location of First Byte of Instruction Executed After RESET 4096 4095 On-Chip ROM
12 11 10 9 8 IRQ5 IRQ5 IRQ4 IRQ4 IRQ3 IRQ3 IRQ2 IRQ2 IRQ1 IRQ1 IRQ0 IRQ0
Interrupt Vector (Lower Byte)
7 6 5
Interrupt Vector (Upper Byte)
4 3 2 1 0
Figure 9. Program Memory Map
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
FUNCTIONAL DESCRIPTION (Continued)
Register File. The register file (Figure 10) consists of four I/O port registers, 124 general-purpose registers and 16 control and status registers (R3-R0, R127-R4, and R255R240, respectively). The instructions can access registers directly or indirectly through an 8-bit address field. This allows short, 4-bit register addressing using the Register
LOCATION R255 R254 R253 R252 R251 R250 R249 R248 R247 R246 R245 R244 R243 R242 R241 R240 Stack Pointer (Bits 7-0) General-Purpose Register (Bits 7-0) Register Pointer Program Control Flags Interrupt Mask Register Interrupt Request Register Interrupt Priority Register Ports 1-0 Mode Port 3 Mode Port 2 Mode T0 Prescaler Timer/Counter0 T1 Prescaler Timer/Counter1 Timer Mode Reserved Not Implemented R127 General-Purpose Registers R4
00
Pointer (Figure 11). In the 4-bit mode, the register file is divided into nine working-register groups, each occupying 16 continuous locations. The Register Pointer addresses the starting location of the active working-register group.
IDENTIFIERS SPL GPR RP FLAGS IMR IRQ IPR P01M P3M P2M PREQ T0 PRE1 T1 TMR
* * * * * *
2F 20 1F FF
r7 r6
r5 r4
r3 r2
r1 r0
R253 (Register Pointer)
The upper nibble of the register file address provided by the register pointer specifies the active working-register group.
Register Group F
F0
R15 to R0
* * * * * * * *
Specified Working Register Group
The lower nibble of the register file address provided by the instruction points to the specified register.
Register Group 1
10 0F
R15 to R0 R15 to R4 R3 to R0
Register Group 0 I/O Ports
R3 R2 R1 R0
Port 3 Port 2 Port 1 Port 0
P3 P2 P1 P0
Figure 11. Register Pointer Configuration
Figure 10. Register File Configuration
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER Stack. The Z08617 internal register files are used for the stack. An 8-bit Stack Pointer (R255) is used for the internal stack that resides within the 124 general-purpose registers. Counter/Timers. There are two 8-bit programmable counter/timers (T0-T1), each driven by its own 6-bit programmable prescaler. The T1 prescaler can be driven by internal or external clock sources, however, the T0 prescaler is driven by the internal clock only (Figure 12). The 6-bit prescalers can further divide the input frequency of the clock source by any integer number from 1 to 64. Each prescaler drives its own counter, which decrements the value (1 to 256) that has been loaded into the counter. When both the counter and prescaler reach the end of count, a timer interrupt request, IRQ4 (T0) or IRQ5 (T1), is generated. The counter can be programmed to start, stop, restart to continue, or restart from the initial value. The counters can also be programmed to stop upon reaching zero (single pass mode) or to automatically reload the initial value and continue counting (modulon continuous mode). The counters, but not the prescalers, are read at any time without disturbing their value or count mode. The clock source for T1 is user-definable and are either the internal microprocessor clock divided by four, or an external signal input through Port 3. The Timer Mode register configures the external timer input as an external clock, a trigger input that can be retriggerable or non-triggerable, or as a gate input for the internal clock. The counter/timers can be programmable cascaded by connecting the T0 output to the input of T1. Port 3 lines P36 also serves as a timer output (T OUT) through which T0, T1 or the internal clock are output.
Internal Data Bus Write RC OSC PRE0 Initial Value Register Write T0 Initial Value Register Read T0 Current Value Register
/2 CLK Out Internal Clock /2 TOUT P36 /4 6-Bit Down Counter 8-bit Down Counter
IRQ4
External Clock Clock Logic /4 6-Bit Down Counter 8-Bit Down Counter
IRQ5
Internal Clock Gated Clock Triggered Clock
PRE1 Initial Value Register Write Write
T1 Initial Value Register Read
T1 Current Value Register
T P31 IN
Internal Data Bus
Figure 12. Counter/Timers Block Diagram
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
FUNCTIONAL DESCRIPTION (Continued)
Interrupts. The Z08617 has six different interrupts from six different sources. These interrupts are maskable and prioritized (Figure 13). The six sources are divided as follows: four sources are claimed by Port 3 lines P33-P30, and two are claimed by the counter/timers. The Interrupt Masked Register globally or individually enables or disables the six interrupts requests. When more than one interrupt is pending, priorities are resolved by a programmable priority encoder that is controlled by the Interrupt Priority register. All interrupts are vectored through locations in the program memory. When an interrupt machine cycle is activated an interrupt request is granted. This disables all of the subsequent interrupts, saves the Program Counter and status flags, and then branches to the program memory vector location reserved for that interrupt. This memory location and the next byte contain the 16-bit address of the interrupt service routine for that particular interrupt request. To accommodate polled interrupt systems, interrupt inputs are masked and the interrupt request register is polled to determine which of the interrupt request needs service.
IRQ0-IRQ5 6
IRQ
IMR 6 Global Interrupt Enable IPR
Interrupt Request
Priority Logic
Vector Select
Figure 13. Interrupt Block Diagram
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
RC Oscillator. The Z08617 provides an internal capacitor to accommodate an RC oscillator configuration. A 1% precision resistor is necessary to achieve 10% accurate frequency oscillation.
EMI. The Z08617 offers low EMI emission due to circuit modifications to improve EMI performance. The internal divide-by-two circuit has been removed to improve EMI performance.
5V
1% Precision XTAL1
NC
XTAL2
RC Oscillator
Figure 14. Oscillator Configuration
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
FUNCTIONAL DESCRIPTION (Continued)
Watch-Dog Timer. The Z08617 is equipped with a hardware Watch-Dog Timer which will be turned on automatically by power-on (Figure 15). The Watch-Dog Timer must be refreshed at least once every 50 ms by executing the instruction WDT (Opcode = %5F), otherwise the Z08617 will reset itself if /WDTOUT pin 9 is connected to /RESET (Pin 6). Figure 16 shows the block diagram of WDT. The Watch-Dog Timer is automatically enabled upon power-up of the microcontroller and /RESET going High. The /WDTOUT pin can be connected to the /RESET pin to provide an automatic reset upon WDT time-out. During WDT time-out, the /WDTOUT pin goes Low for approximately 8-15 s. WDT Hot Bit. Bit 7 of the Interrupt Request Register (IRR register FAH) determines whether a hot start or cold start occurred. A cold start is defined as a rest occurring from the power-up of the Z08617 (bit 7 is set to zero upon power-up). A hot start occurs when a WDT timeout has occurred (bit 7 is set to 1). Bit 7 of the IRQ register is read-only and is automatically reset to 0 when accessed. Power-On Reset. Upon power-up of the microcontroller, a reset condition is enabled. A delay of 150 ms 20% is used to assist in initializing the microcontroller.
VCC 8-15 s /WDT Output
/Reset
Internal Reset POR * Reset Delay = POR 150 ms 20% Reset Delay
Figure 15. WDT Turn-On Timing After Reset
10.4 Kohms Reset Reset Logic Internal Reset
WDT
50 ms Counter
150 ms
Internal RC
Figure 16. WDT Block Diagram
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
Z8(R) CONTROL REGISTER DIAGRAMS
R241 TMR D7 D6 D5 D4 D3 D2 D1 D0
R244 T0 D7 D6 D5 D4 D3 D2 D1 D0
0 = No Function 1 = Load T0 0 = Disable T0 Count 1 = Enable T0 Count 0 = No Function 1 = Load T1 0 = Disable T1 Count 1 = Enable T1 Count TIN Modes 00 = External Clock Input 01 = Gate Input 10 = Trigger Input (Non-retriggerable) 11 = Trigger Input (Retriggerable) TOUT Mode 00 = Not Used 01 = T0 OUT 10 = T1 OUT 11 = Internal Clock Out
T0 Initial Value (When WRITE) (Range: 1-256 Decimal 01-00 HEX) T0 Current Value (When READ)
Figure 21. Counter/Timer 0 Register (F4H: Read/Write)
R245 PRE0 D7 D6 D5 D4 D3 D2 D1 D0
Count Mode 0 = T0 Single Pass 1 = T0 Modulo N Reserved (Must be 0) Prescaler Modulo (Range: 1-64 Decimal 01-00 HEX)
Figure 18. Timer Mode Register (F1H: Read/Write)
Figure 22. Prescaler 0 Register (F5H: Write Only)
R242 T1 D7 D6 D5 D4 D3 D2 D1 D0
R246 P2M
T1 Initial Value (When WRITE) (Range 1-256 Decimal 01-00 HEX) T1 Current Value (When READ)
D7 D6 D5 D4 D3 D2 D1 D0
Figure 19. Counter Timer 1 Register (F2H: Read/Write)
P20-P27 I/O Definition 0 Defines Bit as OUTPUT 1 Defines Bit as INPUT
Figure 23. Port 2 Mode Register (F6H: Write Only)
R243 PRE1 D7 D6 D5 D4 D3 D2 D1 D0
R247 P3M D7 D6 D5 D4 D3 D2 D1 D0
Count Mode 0 = T1 Single Pass 1 = T1 Modulo N Clock Source 1 = T0 Internal 0 = T0 External Timing Input (TIN) Mode Prescaler Modulo (Range: 1-64 Decimal 01-00 HEX)
0 Port 2 Pull-Ups Open-Drain 1 Port 2 Pull-Ups Active Reserved (Must be 0)
Figure 24. Port 3 Mode Register (F7H: Write Only)
Figure 20. Prescaler 1 Register (F3H: Write Only)
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
Z8(R) CONTROL REGISTER DIAGRAMS (Continued)
R250 IRQ
D1 D0
R248 P01M D7 D6 D5 D4 D3 D2
D7 D6 D5 D4 D3 D2 D1 D0
P00 - P03 Mode 00 = Output 01 = Input Stack Selection 1 = Internal (Must be 1) P10-P17 Mode 0 = Byte Output 1 = Byte Input Reserved (Must be 0) P04 - P07 Mode 00 = Output 01 = Input
IRQ0 = P32 Input (D0 = IRQ0) IRQ1 = P33 Input IRQ2 = P31 Input IRQ3 = P30 Input IRQ4 = T0 IRQ5 = T1 Reserved (Must be 0) WDT Hot Bit 0 = POR* 1 = WDT TIME OUT *Default setting after setup.
Figure 25. Port 0 and 1 Mode Register (F8H: Write Only)
R251 IMR
Figure 27. Interrupt Request Register (FAH: Read/Write)
R249 IPR D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Interrupt Group Priority Reserved = 000 C > A > B = 001 A > B > C = 010 A > C > B = 011 B > C > A = 100 C > B > A = 101 B > A > C = 110 Reserved = 111 IRQ1, IRQ4 Priority (Group C) 0 = IRQ1 > IRQ4 1 = IRQ4 > IRQ1 IRQ0, IRQ2 Priority (Group B) 0 = IRQ2 > IRQ0 1 = IRQ0 > IRQ2 IRQ3, IRQ5 Priority (Group A) 0 = IRQ5 > IRQ3 1 = IRQ3 > IRQ5 Reserved (Must be 0)
1 Enables IRQ0-IRQ5 (D0 = IRQ0) Reserved (Must be 0) 1 Enables Interrupts
Figure 28. Interrupt Mask Register (FBH: Read/Write)
Figure 26. Interrupt Priority Register (F9H: Write Only)
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
R252 Flags D7 D6 D5 D4 D3 D2 D1 D0
R254 GPR D7 D6 D5 D4 D3 D2 D1 D0
User Flag F1 User Flag F2 Half Carry Flag Decimal Adjust Flag Overflow Flag Sign Flag Zero Flag Carry Flag
R255 SPL D7 D6 D5 D4 D3 D2 D1 D0
GPR
Figure 31. General-Purpose Register (FEH: Read/Write)
Figure 29. Flag Register (FCH: Read/Write)
Stack Pointer Lower Byte (SP0-SP7)
R253 RP D7 D6 D5 D4 D3 D2 D1 D0
Figure 32. Stack Pointer (FFH: Read/Write)
Reserved (Must be 0) r4 r5 r6 r7 Register Pointer
Figure 30. Register Pointer (FDH: Read/Write)
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
INSTRUCTION SET NOTATION
Addressing Modes. The following notation is used to describe the addressing modes and instruction operations as shown in the instruction summary. Symbol IRR ingIrr X DA RA IM R r IR Ir RR Meaning Indirect register pair or indirect workregister pair address Indirect working-register pair only Indexed address Direct address Relative address Immediate Register or working-register address Working-register address only Indirect-register or indirect working-register address Indirect working-register address only Register pair or working register pair address Flags. Control register (R252) contains the following six flags: Symbol C Z S V D H Meaning Carry flag Zero flag Sign flag Overflow flag Decimal-adjust flag Half-carry flag
Affected flags are indicated by: 0 1 * x Clear to zero Set to one Set to clear according to operation Unaffected Undefined
Symbols. The following symbols are used in describing the instruction set. Symbol dst src cc @ SP PC FLAGS RP IMR Meaning Destination location or contents Source location or contents Condition code Indirect address prefix Stack Pointer Program Counter Flag register (Control Register 252) Register Pointer (R253) Interrupt mask register (R251)
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
CONDITION CODES
Value 1000 0111 1111 0110 1110 1101 0101 0100 1100 0110 1110 1001 0001 1010 0010 1111 0111 1011 0011 0000 Mnemonic -- C NC Z NZ PL MI OV NOV EQ NE GE LT GT LE UGE ULT UGT ULE F Meaning Always True Carry No Carry Zero Not Zero Plus Minus Overflow No Overflow Equal Not Equal Greater Than or Equal Less than Greater Than Less Than or Equal Unsigned Greater Than or Equal Unsigned Less Than Unsigned Greater Than Unsigned Less Than or Equal Never True (Always False) Flags Set -- C=1 C=0 Z=1 Z=0 S S V V Z =0 =1 =1 =0 =1
Z=0 (S XOR V) = 0 (S XOR V) = 1 [Z OR (S XOR V)] = 0 [Z OR (S XOR V)] = 1 C=0 C=1 (C = 0 AND Z = 0) = 1 (C OR Z) = 1 --
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
INSTRUCTION FORMATS
OPC CCF, DI, EI, IRET, NOP, RCF, RET, SCF OPC
dst
One-Byte Instructions
OPC
MODE OR 1110 dst/src
dst/src
CLR, CPL, DA, DEC, DECW, INC, INCW, POP, PUSH, RL, RLC, RR, RRC, SRA, SWAP JP, CALL (Indirect)
OPC src dst
MODE OR OR 1110 1110 src dst
ADC, ADD, AND, CP, LD, OR, SBC, SUB, TCM, TM, XOR
OPC dst OR 1110 dst
OPC dst
MODE OR 1110 dst
ADC, ADD, AND, CP, LD, OR, SBC, SUB, TCM, TM, XOR
OPC VALUE
SRP
VALUE
MODE OPC dst MODE src ADC, ADD, AND, CP, OR, SBC, SUB, TCM, TM, XOR LD, LDE, LDEI, LDC, LDCI MODE dst/src src dst
OPC OR OR 1110 1110 src dst
LD
MODE dst/src
OPC src/dst
OPC x
LD
ADDRESS dst/src OPC OR 1110 src LD cc DAU dst OPC LD DAL OPC JP
src/dst
VALUE OPC dst/CC RA OPC DJNZ, JR DAU DAL CALL
FFH 6FH 7FH
STOP/HALT
Two-Byte Instructions
Three-Byte Instructions
INSTRUCTION SUMMARY
Note: Assignment of a value is indicated by the symbol "". For example: dst dst + src indicates that the source data is added to the destination data and the result is stored in the destination location. The notation "addr (n)" is used to refer to bit (n) of a given operand location.
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Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
INSTRUCTION SUMMARY (Continued)
Instruction and Operation Address Flags Mode Opcode Affected dst src Byte (Hex) C Z S V D H 1[ ] TTTT0T Instruction and Operation INC dst dst dst + 1 Address Flags Mode Opcode Affected dst src Byte (Hex) C Z S V D H r R IR INCW dst dst dst + 1 IRET FLAGS @SP; SP SP + 1 PC @SP; SP SP + 2; IMR(7) 1 JP cc, dst if cc is true PC dst DA IRR RR IR rE r=0-F 20 21 A0 A1 BF - TTT- -
ADC dst, src dst dst + src + C ADD dst, src dst dst + src
0[ ]
TTTT0T
-
TTT-
-
AND dst, src dst dst AND src CALL dst SP SP - 2 @SP PC, PC dst CCF C NOT C CLR dst dst 0 COM dst dst NOT dst CP dst, src dst - src DA dst dst DA dst DEC dst dst dst - 1 DECW dst dst dst - 1 DI IMR(7) 0 DJNZr, dst RA rr-1 if r 0 PC PC + dst Range: +127,-128 EI R IR R IR DA IRR
5[ ]
TT0-
-
TTTTTT
D6 D4
-
-
-
-
-
-
EF
T-
-
-
-
- CD C=0-F 30 CB C=0-F - - - - - -
B0 B1 60 61 A[ ]
-
-
-
-
-
-
-
TT0-
-
JR cc, dst RA if cc is true, PC PC + dst Range: +127,-128 LD dst, src dst src r r R r X r Ir R R R IR IR LDC dst, src LDCI dst, src dst src r r + 1; rr rr + 1 r Ir Im R r X r Ir r R IR IM IM R Irr Irr
-
-
-
-
-
-
TTTT-
- rC r8 r9 r=0-F C7 D7 E3 F3 E4 E5 E6 E7 F5 C2 C3 - - - - - -
R IR R IR RR IR
40 41 00 01 80 81 8F
TTTX-
-
-
TTT-
-
-TTT-
-
-
-
-
-
-
-
rA r=0-F
-
-
-
-
-
-
- -
- -
- -
- -
- -
- -
9F
-
-
-
-
-
-
IMR(7) 1
22
Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
INSTRUCTION SUMMARY (Continued)
Instruction and Operation NOP Address Opcode Mode Byte dst src (Hex) FF Flags Affected CZSVDH - - - - - - Instruction and Operation SUB dst, src dst dst - src SWAP dst
7 4 3 0
Address Opcode Mode Byte dst src (Hex) 2[ ]
Flags Affected CZSVDH [ [ [ [ 1[
OR dst, src dst dst OR src POP dst dst @SP; SP SP + 1 PUSH src SP SP - 1; @SP src RCF C0 RET PC @SP; SP SP + 2 RL dst
C 7 0
4[
]
-
TT0-
-
R IR
F0 F1
XTTX-
-
R IR
50 51
-
-
-
-
-
- TCM dst, src (NOT dst) AND src TM dst, src dst AND src 6[ ] - TT0- -
R IR
70 71
-
-
-
-
-
-
7[ ]
-
TT0-
-
CF
0-
-
-
-
- WDT 5F B[ ] - XXX- - -
AF
-
-
-
-
-
-
XOR dst, src dst dst XOR src
-TT0-
R IR
90 91
TTTT-
-
RLC dst
C 7 0
R IR
10 11
TTTT-
-
These instructions have an identical set of addressing modes, which are encoded for brevity. The first opcode nibble is found in the instruction set table above. The second nibble is expressed symbolically by a `[ ]' in this table, and its value is found in the following table to the left of the applicable addressing mode pair. For example, the opcode of an ADC instruction using the addressing modes r (destination) and Ir (source) is 13.
RR dst
C 7 0
R IR
E0 E1
TTTT-
- Address Mode dst src Lower Opcode Nibble [2] [3] [4] [5] [6] [7]
RRC dst
C 7 0
R IR
C0 C1 3[ ]
TTTT-
-
r r
r Ir R IR IM IM
SBC dst, src dst dst -- src - C SCF C1 SRA dst
C 7 0
TTTT1T R
DF
1-
-
-
-
-
R R
R IR
D0 D1
TTT0-
- IR
SRP src RP src
Im
31
-
-
-
-
-
-
23
Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
OPCODE MAP
Lower Nibble (Hex)
0 0 6.5 DEC R1 6.5 RLC R1 6.5 INC R1 8.0 JP IRR1 8.5 DA R1 10.5 POP R1 6.5 COM R1 10/12.1 PUSH R2 10.5 DECW RR1 6.5 RL R1 10.5 INCW RR1 6.5 CLR R1 6.5 RRC R1 6.5 SRA R1 6.5 RR R1 8.5 SWAP R1 1 2 3 4 10.5 ADD R2, R1 10.5 ADC R2, R1 10.5 SUB R2, R1 10.5 SBC R2, R1 10.5 OR R2, R1 10.5 AND R2, R1 10.5 TCM R2, R1 10.5 TM R2, R1 5 10.5 ADD IR2, R1 10.5 ADC IR2, R1 10.5 SUB IR2, R1 10.5 SBC IR2, R1 10.5 OR IR2, R1 10.5 AND IR2, R1 10.5 TCM IR2, R1 10.5 TM IR2, R1 6 10.5 ADD R1, IM 10.5 ADC R1, IM 10.5 SUB R1, IM 10.5 SBC R1, IM 10.5 OR R1, IM 10.5 AND R1, IM 10.5 TCM R1, IM 10.5 TM R1, IM 7 8 9 A B C D 12.10.0 JP cc, DA E 6.5 INC r1 F
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
6.5 6.5 6.5 ADD ADD DEC r1, Ir2 r1, r2 IR1 6.5 6.5 6.5 ADC ADC RLC r1, Ir2 r1, r2 IR1 6.5 6.5 6.5 SUB SUB INC r1, Ir2 r1, r2 IR1 6.5 6.5 6.1 SBC SBC SRP r1, Ir2 r1, r2 IM 6.5 6.5 8.5 OR OR DA r1, Ir2 r1, r2 IR1 6.5 6.5 10.5 AND AND POP r1, Ir2 r1, r2 IR1 6.5 6.5 6.5 TCM TCM COM r1, Ir2 r1, r2 IR1 6.5 6.5 12/14.1 TM TM PUSH r1, Ir2 r1, r2 IR2 10.5 DECW IR1 6.5 RL IR1 6.5 6.5 10.5 CP CP INCW r1, Ir2 r1, r2 IR1 6.5 6.5 6.5 XOR XOR CLR r1, Ir2 r1, r2 IR1 18.0 12.0 6.5 LDCI LDC RRC r1, Irr2 Ir1, Irr2 IR1 6.5 SRA IR1 6.5 6.5 LD RR r1, IR2 IR1 6.5 8.5 LD SWAP Ir1, r2 IR1 2
Upper Nibble (Hex)
6.5 10.5 LD ADD IR1, IM r1, R2 10.5 ADC IR1, IM 10.5 SUB IR1, IM 10.5 SBC IR1, IM 10.5 OR IR1, IM 10.5 AND IR1, IM 10.5 TCM IR1, IM 10.5 TM IR1, IM
12/10.5 12/10.0 6.5 6.5 LD JR DJNZ LD r2, R1 r1, RA cc, RA r1, IM
6.0 WDT
6.1 DI 6.1 EI 10.5 10.5 10.5 10.5 CP CP CP CP R2, R1 IR2, R1 R1, IM IR1, IM 10.5 10.5 10.5 10.5 XOR XOR XOR XOR R2, R1 IR2, R1 R1, IM IR1, IM 10.5 LD r1,x,R2 10.5 20.0 20.0 LD CALL CALL* r2,x,R1 DA IRR1 10.5 10.5 10.5 10.5 LD LD LD LD R2, R1 IR2, R1 R1, IM IR1, IM 10.5 LD R2, IR1 3 2 3 1 14.0 RET 16.0 IRET 6.5 RCF 6.5 SCF 6.5 CCF 6.0 NOP
Bytes per Instruction Lower Opcode Nibble Pipeline Cycles
4
Execution Cycles Upper Opcode Nibble
Legend: R = 8-bit Address r = 4-bit Address R1 or r1 = Dst Address R2 or r2 = Src Address Sequence: Opcode, First Operand, Second Operand Note: Blank areas not defined. *2-byte instruction appears as a 3-byte instruction
A
10.5 CP R1 , R 2
Mnemonic
First Operand
Second Operand
24
Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
PACKAGE INFORMATION
40-Pin DIP Package Diagram
25
Z08617 NMOS Z8(R) 8-BIT MCU KEYBOARD CONTROLLER
ORDERING INFORMATION
5 MHz Z0861705PSC For fast results, contact your local Zilog sales office for assistance in ordering the part desired. Package P = Plastic DIP V = Plastic Leaded Chip Carrier Speed 05 = 5 MHz Environmental C = Plastic Standard Temperature S = 0C to +70C (standard temp for the Z8615 is 0 to -55C) Example: Z 8615 05 P S* C
is a Z8615, 5 MHz, DIP, 0C to -55C, Plastic Standard Flow Environmental Flow T emperature (standard temp for the Z8615 is 0 to -55C) Package Speed Product Number Zilog Prefix
26

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