Epson LQ-2550 Technical Manual page 287

Signal
Pin No.
D 5
D4
2
D7
3
0
4
A5 o
5
6 A6 o
o
I Reset
—
9
10
A9 o
O
12 D2
1 3
RD o
14
15 DO
16 Address
17 D3
18 CG o
19 D6
20 o
21 A4 O
22 WR o
23 A7 o
5
24 '
25 Al 1 0
26 PROG
27 0
Al 2
28 Al 3 0
O I Address
3 0
ABO o
A2
o
32
A3 o
Table A-21. CN5 Pin Assignments
Data bus 5
Data bus 4
Data bus 7
Bank 1
Address bus 5
Address bus 6
Address bus 10
signal
Address bus 9
Data bus 2
Data bus 1
Read strobe
Data bus O
bus O
Data bus 3
CG select
Data bus 6
Address bus 14
Write strobe
Address bus 7
Address bus 11
I Pulled up (+5V)
Address bus 12
Address bus 13
bus 1
Bank O
Address bus 2
Address bus 3
Description
A - 4 2
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