| part number | W65C22 |
| manufacturer | WCD |
| lead free | ??? |
| prefix | U |
| Description | W65C22 |
| octopart part number | |
| package | |
| RoHS | ??? |
| pin 23 activelow | True |
| pin 21 description | interrupt request output* |
| pin 2 description | port A |
| pin 13 description | port B |
| pin 20 description | supply voltage |
| pin 4 description | port A |
| pin 7 description | port A |
| pin 8 description | port A |
| pin 40 description | port A control |
| pin 6 description | port A |
| pin 36 description | register select (address bus) |
| pin 5 description | port A |
| pin 16 description | port B (pulse counting input for timer 2) |
| pin 25 description | phase-2 clock input |
| pin 30 description | data bus |
| pin 37 description | register select (address bus) |
| pin 33 description | data bus |
| pin 27 description | data bus |
| pin 3 description | port A |
| pin 19 description | port B control (shift register dats) |
| pin 34 description | reset (active low) |
| pin 10 description | port B |
| pin 32 description | data bus |
| pin 39 description | port A control |
| Maximum clock frequency | 1 (NMOS) 14 (W65C22)MHz |
| pin 17 description | port B (controllable by timer 1) |
| pin 31 description | data bus |
| pin 14 description | port B |
| pin 18 description | port B control (shift register clock) |
| pin 34 activelow | True |
| pin 26 description | data bus |
| pin 15 description | port B |
| pin 35 description | register select (address bus) |
| pin 23 description | chip select (active low) |
| pin 21 activelow | ture |
| pin 28 description | data bus |
| pin 24 description | chip select (active high) |
| pin 38 description | register select (address bus) |
| pin 12 description | port B |
| pin 9 description | port A |
| pin 29 -description | data bus |
| pin 11 description | port B |
| pin 22 activelow | read/write select |
| pin 1 description | ground |
| pin 22 description | read/write select |
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