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UM6521A Datasheet Peripheral Interface Adapter

Manufacturer: UMC

Overview:

This datasheet includes multiple variants, all published together in a single manufacturer document.

Key Features

  • Extended performance version of UM6520.
  • 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.
  • Direct replacement for Motorola MC6821 General Descr~ption The UM6521/A Peripheral Interfac.

UM6521A Distributor

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