INS8259 Datasheet (National Semiconductor) - Programmable Interrupt Controller

INS8259, Programmable Interrupt Controller

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

INS8259 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

* Interru