16-Key Encoder
| Pin | Name | Type |
|---|---|---|
| 7 | X4 | output |
| 8 | X3 | output |
| 10 | X2 | output |
| 11 | X1 | output |
| 1 | Y1 | input |
| 2 | Y2 | input |
| 3 | Y3 | input |
| 4 | Y4 | input |
| 12 | DA | output |
| 13 | ~{OE} | input |
| 5 | OSC | input |
| 6 | KBM | passive |
| 17 | A | output |
| 16 | B | output |
| 15 | C | output |
| 14 | D | output |
| 18 | VCC | power_in |
| 9 | GND | power_in |
