Function
I
Pin No.
Pin Name
41 REGX
42 AD10
43 I AD9
4 4
AD8
45 AD7
I Address bus
I Address bus
I
I
Address bus
I
Address bus
I
A d d r e s s b u s
46
AD6
I Address bus
I
Address bus
I
I
Address bus
I A d d r e s s b u s
I A d d r e s s b u s
I
I
I
I 51 I AD1
Address bus
Power supply
i
Ground
Data bus
Data bus
Data bus
I/O Data bus
I/O Data bus
52
vcc
53 GND
54
DT15
55
DT14
56
I/O I Data bus
I
60
Data bus
I
61
Data bus
I
62
GND
I
Ground
I
Ground
Data bus
I/O
I
Data bus
I/O Data bus
63 GND
64
Data bus
I
Data bus
Data bus
Data bus
Data bus
I
Ground
Power supply
0
Ribbon LED drive
0
Data
LED drive
0
Paper in LED drive
0
Print LED drive
I
I
I
