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Pinout von Static Random Access Memory 256x8 with I/O Ports and Timer (8155)
| PC3 | <> |
1 | O |
40 | VCC | |
| PC4 | <> |
2 | 8155 | 39 | <> |
PC2 |
| TIMER IN | −> |
3 | 38 | <> |
PC1 | |
| RESET | −> |
4 | 37 | <> |
PC0 | |
| PC5 | <> |
5 | 36 | <> |
PB7 | |
| TIMER OUT | <− |
6 | 35 | <> |
PB6 | |
| IO/M | −> |
7 | 34 | <> |
PB5 | |
| CE | −> |
8 | 33 | <> |
PB4 | |
| RD | −> |
9 | 32 | <> |
PB3 | |
| WR | −> |
10 | 31 | <> |
PB2 | |
| ALE | −> |
11 | 30 | <> |
PB1 | |
| AD | <> |
12 | 29 | <> |
PB0 | |
| AD1 | <> |
13 | 28 | <> |
PA7 | |
| AD2 | <> |
14 | 27 | <> |
PA6 | |
| AD3 | <> |
15 | 26 | <> |
PA5 | |
| AD4 | <> |
16 | 25 | <> |
PA4 | |
| AD5 | <> |
17 | 24 | <> |
PA3 | |
| AD6 | <> |
18 | 23 | <> |
PA2 | |
| AD7 | <> |
19 | 22 | <> |
PA1 | |
| VSS | 20 | 21 | <> |
PA0 |