Epson EPL-N1200 Service Manual page 138

EPL-N1200 Service Manual
Pin No.
1,39,72
2
3
4
5
6
7
8
9
10,30,59
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
31
32
33
34
35
36
37
38
40
41
42
43
44
45
46
47
48
49
Rev. A
Table A-4. CN3 Pin Assignments
Signal Name I/O
Vss —
D0 I/O
D16 I/O
D1 I/O
D17 I/O
D2 I/O
D18 I/O
D3 I/O
D19 I/O
Vcc —
RD O
A0 O
A1 O
A2 O
A3 O
A4 O
A5 O
A6 O
A10 O
D4 I/O
D20 I/O
D5 I/O
D21 I/O
D6 I/O
D22 I/O
D7 I/O
D23 I/O
A7 O
A19 O
A8 O
A9 O
A20 O
EEP O
RESET —
A21 O
A22 O
A23 O
A11 O
A13 O
A14 O
A12 O
CS0 O
CS1 O
A18 —
WR O
A17 O
D8 I/O
Description
Ground
Data bus bit 0
Data bus bit 16
Data bus bit 1
Data bus bit 17
Data bus bit 2
Data bus bit 18
Data bus bit 3
Data bus bit 19
+5 VDC
Read signal
Memory address bit 0
Memory address bit 1
Memory address bit 2
Memory address bit 3
Memory address bit 4
Memory address bit 5
Memory address bit 6
Memory address bit 10
Data bus bit 4
Data bus bit 20
Data bus bit 5
Data bus bit 21
Data bus bit 6
Data bus bit 22
Data bus bit 7
Data bus bit 23
Memory address bit 7
Memory address bit 19
Memory address bit 8
Memory address bit 9
Memory address bit 20
+5 VDC
Reset
Memory address bit 21
Memory address bit 22
Memory address bit 23
CAS 0
CAS 2
CAS 3
CAS 1
RAS 0
RAS 1
Memory address bit 18
Write enable
Memory address bit 17
Data bus bit 8
Appendix A
A-7