UMC UM6520A
The UM6520/A peripheral Interface Adapter (PIA) is designed to provide a broad range of peripheral control to microcomputer systems. Each I/O line may be programmed to be either an input or an output.| Part No. | UM6520A |
|---|---|
| Datasheet | UM6520A Download |
| Manufacturer |  UMC |
| Description | Peripheral Interface Adapter |
| Buy | Stock & Price |
FEATURES
● Direct replacement for Motorola MC6820● Single +5V power supply
● Two 8-bit bi-directional I/O ports with individual data direction control
● CMOS-compatible peripheral port A lines
● Automatic "handshake.' control of data transfers
● Programmable interrupt capability
● Automatic initialization on power up
● 1 and 2 MHz versions
GENERAL DESCRIPTION
Control of peripheral devices is accomplished through two 8-bit bi-directional I/O ports. In addition, four peripheral control lines are provided to perform "handshaking" during data transfers. Pin Configuration Block Diagram VSS PAO PA1 PA2 PA3 PA4 PA5 PA6 PA7 PBO PB1 PB2 PB3 PB4 PB5 PB6 PB7 CB1 CB2 VCC CA1 CA2 IROA IROB RS
