ZiLOG Z08617 Bedienungsanleitung

Z08617 NMOS Z8

8-BIT MCU

KEYBOARD CONTROLLER

FEATURES

USTOMER

ROCUREMENT

PECIFICA TION

■Low Power Consumption - 750 mW

■32 Input/Output Lines

■Digital Inputs NMOS Levels with

Internal Pull-Up Resistors

■4 Kbytes ROM

■Four Direct Connect LED Drive Pins

■124 Bytes of RAM

■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

GENERAL DESCRIPTION

The Z08617 Keyboard Controller is a member of the

Z8®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 bit-

manipulation capabilities, and easy hardware/soft-

ware system expansion along with low cost and low

power consumption.

The Z08617 architecture is characterized by a flex-

ible 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 capabili-

ties, 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 avail-

able 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 unbur-

dens the program from coping with real-time prob-

lems 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 Circuit Device

Power VCC VDD

Ground GND VSS

DS96KEY0300

Z08617

NMOS Z8®8-BIT MCU

KEYBOARD CONTROLLER

Z08617 NMOS Z8

8-BIT MCU

KEYBOARD CONTROLLER

GENERAL DESCRIPTION (Continued)

Port 3

Counter/

Timers (2)

Interrupt

Control

Port 2

I/O

(Bit Programmable)

ALU

Flags

Pointer

124 x 8-Bit

Machine Timing

& Instruction Control

Program

Memory

Program

Counter

Vcc GND

Output Input

Port 0 Port 1

I/O

Output Open-Drain

(Nibble Programmable)

I/O

Output Open-Drain

(Byte Programmable)

44 8

WDT

POR

/WDTOUT

/RESET

XTAL2

XTAL1

Figure 1. Z08617 Functional Block Diagram

Z08617 NMOS Z8

8-BIT MCU

KEYBOARD CONTROLLER

PIN IDENTIFICATION

Figure 2. 40-Pin DIP Pin Configuration

Pin # Symbol Function Direction

CC Power Supply Input

2 CLK Out Clock Out Output

3 RC In Z8 Clock Input

4 P37 Port 3, Pin 7 Output

5 P30 Port 3, Pin 0 Input

6 /RESET Reset Input

*7 GND Ground

*8 N/C Not Connected

9 /WDTOUT Watch-Dog Timer Output

10 P35 Port 3, Pin 5 Output

Pin # Symbol Function Direction

11 GND Ground

12 P32 Port 3, Pin 2 Input

13-20 P07-P00 Port 0, Pins 0,1,2,3,4,5,6,7 In/Output

21-28 P17-P10 Port 1, Pins 0,1,2,3,4,5,6,7 In/Output

29 P34 Port 3, Pin 4 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 P24-P20 Port 2, Pins 0, 1, 2, 3, 4 In/Output

39 P31 Port 3, Pin 1 Input

40 P36 Port 3, Pin 6 Output

Table 1. 40-Pin DIP 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

P36

P31

P27

P26

P25

P24

P23

P22

P21

P20

P33

P34

P17

P16

P15

P14

P13

P12

P11

P10

Z08617

DIP

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.

Z08617 NMOS Z8

8-BIT MCU

KEYBOARD CONTROLLER

ABSOLUTE MAXIMUM RATINGS

Symbol Description Min Max Units

VCC Supply Voltage* –0.3 +7.0 V

TSTG Storage Temp –65 +150 C

TAOper Ambient Temp † †

Notes:

* Voltage on all pins with respect to GND.

† See ordering information

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 condi-

tions for extended periods may affect device reliabil-

ity.

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 Test

150 pF

Figure 17. Test Load Diagram

STANDARD TEST CONDITIONS

TA= 25°C, VCC = GND = 0V, f = 1.0 MHz, unmeasured pins returned to ground.

Parameter Max

Input capacitance 12 pF

Output capacitance 12 pF

I/O capacitance 12 pF

Z08617 NMOS Z8

8-BIT MCU

KEYBOARD CONTROLLER

DC CHARACTERISTICS

VCC = 4.75V to 5.25V @ 0°C to -55°C

Sym Parameter Min Max Typ* Unit Condition

VIH Input High Voltage 2.0 VCC V

VIL Input Low Voltage –0.3 0.8 V

VRH Reset Input High Voltage 3.8 VCC V

VRL Reset Input Low Voltage –0.3 0.8 V

VOH Output High Voltage 2.0 V IOH = –250 µA (Port 2 only)

Output High Voltage 2.4 V IOH = –250 µA (Port 3 only)

VOL Output Low Voltage 0.8 V IOL = 10.0 mA (See note [1] below.)

IIL Input Leakage –10 10 µAV

IN = 0V, 5.25V (See note [3] below.)

IOL Output Leakage –10 10 µAV

IN = 0V, 5.25V (See note [2] below.)

IIR Reset Input Current –335 –775 –477 µAV

IN = 0V, 5.25V

IR1 Input Current –335 –775 µA Pull-up resistor=10.4 Kohms, VIN=0.0V

IR2 Input Current –1.6 –2.9 mA Pull-up resistor = 2.4 Kohms, VIN=0.0V

ICC VCC Supply Current 160 mA

WDT Watch-Dog Timer 2.0 mA VOL=0.4 Volt

Notes:

* Typical @ 25°C

[ 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 open-

drain as a logic one.

[ 3 ] P00-P07, P10-P17, P20-P25, P30-P33 as output mode open-

drain as a logic one.

Z08617 NMOS Z8

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 program-

mable, 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.

Figure 5. Port 0 Configuration

Port 0

I/O

(Open-Drain Output)

Z8615

Input

Output

Pad

OEN

10.4 Kohms

(a) Port P00-P03

Input

Output

Pad

OEN

(b) Port P04-P07

Z08617 NMOS Z8

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).

Port 1

I/O

(Open-Drain Output)

Z8615 8

Input

Output

Pad

OEN

Figure 6. Port 1 Configuration

Z08617 NMOS Z8

8-BIT MCU

KEYBOARD CONTROLLER

Port 2 (P27-P20). Port 2 is an 8-bit, bit programmable, bi-

directional, 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 indepen-

dently, as input or output, or configured to provide open-

drain 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.

Open-Drain

OUT

OEN

Pad

Input

(a) Ports P20-P23

Port 2

(I/O)

Z8615

Open-Drain

OUT

OEN

Pad

10.4 Kohms

Input

(b) Ports P24-P25

Open-Drain

OUT

OEN

Pad

2.4 Kohms

Input

Figure 7. Port 2 Configuration

Z08617 NMOS Z8

8-BIT MCU

KEYBOARD CONTROLLER

PIN FUNCTIONS (Continued)

Port3 (P37-P30). Port 3 is an 8-bit, NMOS compatible four-

fixed-input and four-fixed-output I/O port. These eight I/O

lines have four-fixed-input (P33-P30) and four-fixed-out-

put(P37-P34)ports.Port3inputshave10.4Kohms(±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 pull-

up resistor. Once this pin is pulled Low, it takes about

150 ms for microcon-troller initialization.

Figure 8. Port 3 Configuration

Port 3

(I/O or

Control)

Z8615

Input Pad

Output

Pad

(a) Port 3 P34-P37

(b) Port 3 P30-P33

10.4 Kohms

Z08617 NMOS Z8

8-BIT MCU

KEYBOARD CONTROLLER

FUNCTIONAL DESCRIPTION

The device incorporates special functions to enhance

Zilog's Z8 applications as a keyboard controller, scien-

tific research and advanced technologies applications.

Program Memory. The 16-bit program counter ad-

dresses 4 Kbytes of program memory space at inter-

nal 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.

On-Chip

ROM

Location of

First Byte of

Instruction

Executed

After RESET

Interrupt

Vector

(Lower Byte)

Interrupt

Vector

(Upper Byte)

IRQ5

IRQ4

IRQ3

IRQ2

IRQ1

IRQ0

IRQ5

65535

4096

4095

Reserved

Figure 9. Program Memory Map

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