UPD8259A-2 Datasheet - NEC

UPD8259A-2 PROGRAMMABLE INTERRUPT CONTROLLER

A positive transition on an IR input sets the corresponding bit in the Interrupt Request Register, and at the same time the INT .

NEe Microcomputers, Inc. NEe },PD8259A }'PD8259A-2 PROGRAMMABLE INTERRUPT CONTROLLER DESC RIPTI ON The NEC J.lPD8259A is a programmable interrupt controller directly compatible with the 8080A/8085A/8086/8088 microprocessors. It can service eight levels of interrupts and contains on-chip logic to expand interrupt capabilities up to 64 levels with the addition of other J.lPD8259As. The user is offered a selection of priority algorithms to tailor the priority processing to meet his system requi.

UPD8259A-2 Datasheet (918.37 KB)