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Pinout von Programmable Peripheral Interface (8255)
| PA3 | <> |
1 | O |
40 | <> |
PA4 |
| PA2 | <> |
2 | 8255 | 39 | <> |
PA5 |
| PA1 | <> |
3 | 38 | <> |
PA6 | |
| PA0 | <> |
4 | 37 | <> |
PA7 | |
| RD | −> |
5 | 36 | <− |
WR | |
| CS | −> |
6 | 35 | <− |
RESET | |
| VSS | 7 | 34 | <> |
DB0 | ||
| A1 | −> |
8 | 33 | <> |
DB1 | |
| A0 | −> |
9 | 32 | <> |
DB2 | |
| PC7 | <> |
10 | 31 | <> |
DB3 | |
| PC6 | <> |
11 | 30 | <> |
DB4 | |
| PC5 | <> |
12 | 29 | <> |
DB5 | |
| PC4 | <> |
13 | 28 | <> |
DB6 | |
| PC0 | <> |
14 | 27 | <> |
DB7 | |
| PC1 | <> |
15 | 26 | VCC | ||
| PC2 | <> |
16 | 25 | <> |
PB7 | |
| PC3 | <> |
17 | 24 | <> |
PB6 | |
| PB0 | <> |
18 | 23 | <> |
PB5 | |
| PB1 | <> |
19 | 22 | <> |
PB4 | |
| PB2 | <> |
20 | 21 | <> |
PB3 |