IA88C00
Data Sheet
Microcontroller
As of Production Version -01
Figure 3. 48-Lead DIP Pin Assignments
Pin #
1-8
9-10
11
Symbol
P10-17
P24-25
Vcc
Function
Direction
Port 1, pins 0,1,3,4,5,6,7
Port 2, pins 4,5
Power Supply
In/Output
In/Output
Input
12
13
14-17
18
19-20
21-23
24-25
26-27
28-29
30
31
32-33
34
XTAL2
XTAL1
P44-47
P22
P32-21
P23-21
P31-30
P26-27
P37-36
/RESET
R/W
Crystal Oscillator
Crystal Oscillator
Port 4, pins 4,5,6,7
Port 2, pin 2
Port 2, pins 2,3
Port 2, pins 3,0,1
Port 3, pins 1,0
Port 2, pins 6,7
Port 3, pins 7,6
RESET
Output
Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
In/Output
Input
READ/WRITE
Port 4, pins 3,2
Ground
Output
In/Output
Input
P43-42
GND
35-36
37
P41-40
/DS
Port 4, pins 1,0
Data Strobe
In/Output
Output
38
39-40
41-48
/AS
P35-34
P07-00
Address Strobe
Port 3, pins 5,4
Port 0, pins 7,6,5,4,3,2,1,0
Output
In/Output
In/Output
Copyright 2005
Innovasic.com
ENG 21 0 050519-00
www.Innovasic
Innovasic Semiconductor
Page 7 of 80
1.888.824.4184
INNOVASIC [ INNOVASIC, INC ]
