UM6520A Overview
The UM6520/A peripheral Interface Adapter (PIA) is designed to provide a broad range of peripheral control to microputer systems. Control of peripheral devices is acplished through two 8-bit bi-directional I/O ports. Each I/O line may be programmed to be either an input or an output.
UM6520A Key Features
- Direct replacement for Motorola MC6820
- Single +5V power supply
- Two 8-bit bi-directional I/O ports with individual data
- CMOS-patible peripheral port A lines
- Automatic "handshake.' control of data transfers
- Programmable interrupt capability
- Automatic initialization on power up
- 1 and 2 MHz versions