| Z 80 CTC | Pin | Uso | Pin | Uso | Pin | Uso |
|---|---|---|---|---|---|---|
 |
1 | D4 | 11 | INT ENABLE OUT | 21 | CLK/TRG2 |
| 2 | D5 | 12 | *INT | 22 | CLK/TRG1 | |
| 3 | D6 | 13 | INT ENABLE IN | 23 | CLK/TRG0 | |
| 4 | D7 | 14 | *M1 | 24 | + 5V | |
| 5 | GND | 15 | CLOCK | 25 | D0 | |
| 6 | *RD | 16 | *CHIP ENABLE | 26 | D1 | |
| 7 | ZC/TO0 | 17 | *RESET | 27 | D2 | |
| 8 | ZC/TO1 | 18 | CS0 | 28 | D3 | |
| 9 | ZC/TO2 | 19 | CS1 | 29 | ||
| 10 | *IORQ | 20 | CLK/TRG3 | 30 |