Z86E73 Datasheet, PDF (2/19 Pages) Zilog, Inc. – OTP IR Microcontrollers

PRELIMINARY
GENERAL DESCRIPTION (Continued)
Z86E73/E74/L73/L74
CP95LVO0801
I/O Bit
Programmable
P00
P01
P02
4
P03
P04
P05
4
P06
P07
P10
P11
P12
P13
8
P14
P15
P16
P17
P20
P21
P22
P23
P24
P25
P26
P27
Port 0
Port 1
Port 2
Port 4
8
Port 5
8
Port 6
4
Register File
512 or 1K x 8-bit
Register Bus
ROM
16K/32K x 8
Internal
Address Bus
Internal Data Bus
Z8 Core
Extended
Register
File
Extended
Register Bus
Port 3
Machine
Timing
&
Instruction
Control
Counter/Timer 8
8-Bit
Counter/Timer 16
16-Bit
Power
P31
P32
P33
P34
P35
P36
P37
XTAL
/AS
/DS
R/W
/RESET
VDD
VSS
Z86E74/L74
version only
Functional Block Diagram
2