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INS8259 Datasheet Programmable Interrupt Controller

Manufacturer: National Semiconductor (now Texas Instruments)

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General Description

The INS8259 is a Programmable Interrupt Controller chip contained in a standard 28-pin dual-in-Iine package_ The chip, which is fabricated using N-channel silicon gate technology, functions as a versatile interrupt management device in a microcomputer system.

Each INS8259 resolves interrupt requests from up to eight different sources.

These devices can be cascaded to provide interrupt management of up to 64 levels with no other circuitry required.

Overview

~National ~ Semiconductor Preliminary JULY 1978 INS8259 Programmable Interrupt Controller.

Key Features

  • Performs Priority Control of up to Eight Interrupt Levels.
  • Can be Expanded to Handle up to 64 Levels Through Cascading.
  • Four Programmable Operating Modes.
  • Programmable Interrupt Vectors, Allowing Service Routines to be Located Anywhere in Memory.
  • Interrupt Request Inputs Can be Individually Masked.
  • TRI-STATE@ TTL Drive Capability for Bidirectional Data and Control Buses.
  • Single + 5 Volt Power Supply.
  • 28-Pin Dual-in-Line Pac.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
INS8250 Asynchronous Receiver/Transmitter
INS8250-B Asynchronous Receiver/Transmitter
INS8250A UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER
INS8251 Programmable Communication Interface
INS8253 Programmable Interval Timer
INS8254 N-Channel Bit Programmable Peripherallnterface
INS8255 Programmable Peripheral Interface
INS8255N Programmable Peripheral Interface
INS8257 Programmable DMA Controller
INS8202 Octal Buffers