UM6520 adapter equivalent, peripheral interface adapter.
* Direct replacement for Motorola MC6820
* Single +5V power supply
* Two 8-bit bi-directional I/O ports with individual data
direction control
* CMOS-comp.
The UM6520/A peripheral Interface Adapter (PIA) is designed to provide a broad range of peripheral control to microcomputer systems. Control of peripheral devices is accomplished through two 8-bit bi-directional I/O ports.
Each I/O line may be progr.
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