Z86C61/62/96
Z8
®
M
ICROCONTROLLER
P
RODUCT
S
PECIFICATION
Z86C61/62/96
CMOS Z8
®
M
ICROCONTROLLER
FEATURES
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8-Bit CMOS Microcontroller
40-Pin DIP, 44-Pin PLCC, 64-Pin DIP, or
68-Pin PLCC Package
32 Input/Output Lines (Z86C61 Only)
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Auto Latches
RAM and ROM Protect
16 Kbytes of ROM
256 Bytes of RAM
Two Programmable 8-Bit Counter/Timers,
Each with 6-Bit Programmable Prescaler
Six Vectored, Priority Interrupts from Eight
Different Sources
Clock Speeds: 16 and 20 MHz
On-Chip Oscillator that Accepts a Crystal,
Ceramic Resonator, LC, or External Clock Drive
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52 Input/Output Lines (Z86C62 and Z86C96)
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3.0V to 5.5V Operating Range
Low Power Consumption: 200 mW (max)
Fast Instruction Pointer: 0.75
µs
@ 16 MHz
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Two Standby Modes: STOP and HALT
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Full-Duplex UART
All Digital Inputs are TTL Levels
GENERAL DESCRIPTION
The Z86C61/62/96 microcontroller is a member of the Z8
single-chip microcontroller family with 16 Kbytes of ROM
and 256 bytes of RAM. The Z86C96 is ROMless.
The Z86C61 is offered in 40-pin DIP and 44-pin PLCC style
packages, however, the ROMless pin option is available
on the 44-pin version only. The Z86C62/96 is offered in 64-
pin DIP and 68-pin PLCC style packages. A ROMless pin
option enables these MCUs to address both external
memory and preprogrammed ROM, making them well-
suited for high-volume applications or where code flexibil-
ity is required.
With 16 Kbytes of ROM and 256 bytes of general-purpose
RAM, these low-cost, low power consumption CMOS
Z86C61/62/96 MCUs offer fast execution, efficient use of
memory, sophisticated interrupts, input/output bit manipu-
lation capabilities, and easy hardware/software system
expansion.
The Z86C61/62/96 architecture is characterized by Zilog’s
8-bit microcontroller core. The device offers a flexible I/O
scheme, an efficient register and address space structure,
multiplexed capabilities between address/data, I/O, and a
number of ancillary features that are useful in many indus-
trial and advanced scientific applications.
For applications which demand powerful I/O capabilities,
the Z86C61 fulfills this with 32 pins dedicated to input and
output. These lines are grouped into four ports with eight
lines each. The Z86C62/96 has 52 pins for input and
output, and these lines are grouped into six, 8-bit ports and
one 4-bit port. Each port is configurable under software
control to provide timing, status signals, serial or parallel
I/O with or without handshake, and an address/data bus
for interfacing external memory.
1
Z86C61/62/96
Z8
®
M
ICROCONTROLLER
GENERAL DESCRIPTION
(Continued)
There are three basic address spaces available to support
this configuration: Program Memory, Data Memory, and
236 General-Purpose Registers.
To unburden the program from coping with the real-time
tasks, such as counting/timing and serial data communi-
cation, the Z86C61/62/96 offers two on-chip counter/tim-
ers with a large number of user selectable modes, and an
on-board UART (Figures 1, 2, and 3).
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
V
CC
GND
Device
V
DD
V
SS
Output Input
Vcc
GND
XTAL /AS /DS R//W /RESET
Port 3
Machine Timing and
Instruction Control
UART
ALU
Counter/
Timers
(2)
FLAGS
Prg. Memory
16,384
x 8-Bit
Interrupt
Control
Register
Pointer
Register File
256 x 8-Bit
Program
Counter
Port 2
Port 0
Port 1
4
I/O
(Bit Programmable)
4
8
Address/Data or I/O
(Byte Programmable)
Address or I/O
(Nibble Programmable)
Figure 1. Z86C61 Functional Block Diagram
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Z86C61/62/96
Z8
®
M
ICROCONTROLLER
PIN DESCRIPTION
Table 1. Z86C61 40-Pin DIP Pin Identification
VCC
XTAL2
XTAL1
P37
P30
/RESET
R//W
/DS
/AS
P35
GND
P32
P00
P01
P02
P03
P04
P05
P06
P07
1
2
3
4
5
6
7
8
9
10
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
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13-20
21-28
29
30
31-38
39
40
Symbol
V
CC
XTAL2
XTAL1
P37
P30
/RESET
R//W
/DS
/AS
P35
GND
P32
P07-P00
P17-P10
P34
P33
P27-P20
P31
P36
Function
Power Supply
Crystal, Oscillator Clock
Crystal, Oscillator Clock
Port 3, Pin 7
Port 3, Pin 0
Reset
Read/Write
Data Strobe
Address Strobe
Port 3, Pin 5
Direction
Input
Output
Input
Output
Input
Input
Output
Output
Output
Output
Z86C61
11
DIP
12
13
14
15
16
17
18
19
20
Ground
Input
Port 3, Pin 2
Input
Port 0, Pins 0,1,2,3,4,5,6,7 In/Output
Port 1, Pins 0,1,2,3,4,5,6,7 In/Output
Port 3, Pin 4
Output
Port 3, Pin 3
Input
Port 2, Pins 0,1,2,3,4,5,6,7 In/Output
Port 3, Pin 1
Input
Port 3, Pin 6
Output
Figure 4. Z86C61 40-Pin DIP
Pin Assignments
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Embedded System
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