Datasheet4U Logo Datasheet4U.com

UPD8259A-2 - PROGRAMMABLE INTERRUPT CONTROLLER

General Description

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

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
UPD8243 Input / Output Expander NEC Electronics
UPD8243H Input / Output Expander NEC Electronics
UPD82C55A Programmable Peripheral Interface NEC Electronics
UPD8035HL High Speed 8-bit Single-Chip HMOS Microcomputers NEC Electronics
UPD8035HLC High Speed 8-bit Single-Chip HMOS Microcomputers NEC Electronics

Other Datasheets by NEC (now Renesas Electronics)

Part Number Description
uPD8259A Programmable Interrupt Controller
uPD8259AC Programmable Interrupt Controller
UPD8259 PROGRAMMABLE INTERRUPT CONTROLLER
UPD8259-5 PROGRAMMABLE INTERRUPT CONTROLLER
UPD8251 PROGRAMMABLE COMMUNICATIONS INTERFACE

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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 requirements. These can be dynamically modified during operation, expanding the versatility of the system. The J.lPD8259A is completely upward compatible with the J.lPD8259-5, so software written for the J.lPD8259-5 will run on the J.lPD8259A.