IA88C00
Data Sheet
Microcontroller
As of Production Version -01
Figure 5. 68-Lead PLCC-Pin Assignments
Pin #
1
Symbol
NC
Function
Note Connected
Direction
2-7
8-10
11
P10-15
NC
Vcc
De-Mux
P16-17
P24-25
Vcc
GND
Vcc
XTAL2
XTAL1
P44-47
NC
Port 1, pins 0,1,2,3,4,5
Not Connected
Power Supply
De-multiplex Pin
Port 1, pins 6,7
Port 2, pins 4,5
Power Supply
Ground
Power Supply
Crystal Oscillator
Crystal Oscillator
Port 4, points 4,5,6,7
Not Connected
Port 2, pin 2
In/Output
Input
Input
In/Output
In/Output
Input
Input
Input
In/Output
In/Output
In/Output
12
13-14
15-16
17
18
19
20
21
22-25
26-27
28
P22
In/Output
29
NC
Not Connected
Port 3, pins 2,3
Port 2, pins 3,0,1
Port 3, pin 1
30-31
32-34
35
P32-33
P23-21
P31
In/Output
In/Output
In/Output
36
NC
Not Connected
37
P30
Port 3, pin 0
In/Output
In/Output
In/Output
Input
38-39
40-41
42
43-44
45
46-47
48-49
50-51
52
P26-27
P37-36
/RESET
NC
R//W
P43-42
GND
P41-40
/DS
Port 2, pins 6,7
Port 3, pins 7,6
RESET
Not Connected
READ/WRITE
Port 4, pins 3,2
Ground
Output
In/Output
Input
In/Output
Output
Port 4, pins 1,0
Data Strobe
53
/AS
Address Strobe
Port 3, pins 5,4,3,2
Port 0, pins 7,6
Power Supply
Not Connected
Port 0, pins 5,4,3,2
Ground
Output
54-55
56-57
58
59-61
62-65
66
P43-42
P07-06
Vcc
NC
P05-02
GND
In/Output
In/Output
Input
In/Output
Input
Copyright 2005
Innovasic.com
ENG 21 0 050519-00
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Innovasic Semiconductor
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