W65C22S
The W65C22S VIA combines
flexible I/O control with the added versatility of (2) 16-bit Timers.
Product
Features:
Two 8-bit bi-directional I/O ports with per bit data direction
control.
Automatic Handshake control of data transfers
(4) Programmable interrupt control lines (two for each
port)
Register and Chip Selects specified for multiplexed operation
Two 16-bit programmable Interval Timer/Counters
Synchronous serial port