UM8259A Datasheet (UMC) - Programmable Interrupt Controller

UM8259A, Programmable Interrupt Controller

The UM8259A Programmable Interrupt Controller handles up to eight vectored priority interrupts for the CPU, It is cascadable for up to 64 vectored priority interrupts without additional circuitry, Packaged in a 28-pin DIP, it uses NMOS technology and requires a single +5V supply.

Circuitry is static

UM8259A Features

* iAPX86, iAPX88 compatible

* MCS-80®, MCS-85® compatible

* Eight-level priority controller

* Expandable to 64 levels ,. Programmable interrupt modes

* Individual request mask capability

* Single +5V supply (no clocks)

* 28-pin dual-in-line pa