DIGITAL AND OPTO PORTS | SECTION 6 | |||
Table |
|
| ||
Pin # | 82C55 | Description | Opto |
|
|
|
| Channel |
|
19 | Port A, line 0 |
| 8 |
|
21 | Port A, line 1 |
| 9 |
|
23 | Port A, line 2 |
| 10 |
|
25 | Port A, line 3 |
| 11 |
|
24 | Port A, line 4 |
| 12 |
|
22 | Port A, line 5 |
| 13 |
|
20 | Port A, line 6 |
| 14 |
|
18 | Port A, line 7 |
| 15 |
|
10 | Port B, line 0 | High current | 16 |
|
8 | Port B, line 1 | High current | 17 |
|
4 | Port B, line 2 | High current | 18 |
|
6 | Port B, line 3 | High current | 19 |
|
1 | Port B, line 4 | High current | 20 |
|
3 | Port B, line 5 | High current | 21 |
|
5 | Port B, line 6 | High current | 22 |
|
7 | Port B, line 7 | High current | 23 |
|
13 | Port C, line 0 | Lower C | 0 |
|
16 | Port C, line 1 | Lower C | 1 |
|
15 | Port C, line 2 | Lower C | 2 |
|
17 | Port C, line 3 | Lower C | 3 |
|
14 | Port C, line 4 | Upper C | 4 |
|
11 | Port C, line 5 | Upper C | 5 |
|
12 | Port C, line 6 | Upper C | 6 |
|
9 | Port C, line 7 | Upper C | 7 |
|
26 |
|
| Ground |
|
2 |
|
| + 5V |
|
Figure 6-3 Digital I/O connector pin out (viewed from top)
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