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UM82C55A Datasheet CMOS PROGRMMABLE PERIPHERAL INTERFACE

Manufacturer: UMC

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Datasheet Details

Part number UM82C55A
Manufacturer UMC
File Size 718.23 KB
Description CMOS PROGRMMABLE PERIPHERAL INTERFACE
Download UM82C55A Download (PDF)

General Description

The UM82C55A is a high performance CMOS version of the industry standard 8255A and is manufactured using a selfaligned silicon gate CMOS process.

It is a general purpose programmable I/O device which may be used with many different microprocessors.

There are 24 I/O pins which may be individually programmed in 2 groups of 12 and used in 3 major modes of operation.

Overview

SUMO UM82C55A CMOS Programmable Peripheral Interface.

Key Features

  • Pin compatible with NMOS 8255A.
  • 24 programmable I/O pins.
  • Fully TTL compatible.
  • Bus-hold circuitry on all I/O ports eliminates pull-up resistors.
  • High speed, no "wait state" operation with 8M Hz 80C86.
  • Direct bit set/reset capabi lity.
  • Enhanced control word read capabi lity.
  • Single 5V power supply.
  • 2.5mA drive capabi lity on all I/O port outputs.
  • Low standby power -ICCSB = 10llA General.

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