R65NC22 Description
The R65NC22 Versatile Interface Adapter (VIA) is a very flexible I/O control device. In addition, this device contains a pair of very powerful 16-bit interval timers, a serial-to-parallel/parallelto serial shift register and input data latching on the peripheral ports. Expanded handshaking capability allows control of bidirectional data transfers between VIA's in multiple processor systems.
R65NC22 Key Features
- Low power CMOS N-well silicon gate technology
- Fully patible with NMOS 6522 devices
- Two 8-bit bidirectional I/O ports
- Two 16-bit programmable timer/counters
- Serial bidirectional peripheral I/O
- TTL patible peripheral control lines
- Expanded "handshake" capability allows positive control
- Latched output and input registers on both I/O ports
- 1, 2, 3, and 4 MHz operation
- mercial and industrial temperature range versions