Z86E61 Zilog., Z86E61 Datasheet - Page 2

• Manufacturer Part Number: Z86E61
• Description: CMOS Z8 16K/32K EPROM MICROCONTROLLER
• Manufacturer: Zilog.

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 system from coping with real-time tasks
such as counting/timing and serial data communication,
the Z86E61/E63 offers two on-chip counter/timers with a
large number of user selectable modes (Figure 1).
2
(Bit Programmable)
Output Input
Counter/
Interrupt
Control
Timers
Port 3
UART
Port 2
I/O
(2)
Figure 1. Z86E61/E63 Functional Block Diagram
P R E L I M I N A R Y
Vcc
(Nibble Programmable)
Address or I/O
Register File
256 x 8-Bit
4
Register
FLAGS
Pointer
Port 0
GND
ALU
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:
4
Connection
Ground
Power
XTAL
Machine Timing and
Instruction Control
/AS /DS R//W /RESET
(Byte Programmable)
Address/Data or I/O
Prg. Memory
Program
16K/32K
Counter
Port 1
8
Circuit
GND
V
CC
WITH
Z86E61/E63 Z8
16K/32K EPROM
Device
V
V
DD
SS
®
MCU