The Intersil 82C59A is a high performance CMOS Priority Interrupt Controller manufactured using an advanced 2µm CMOS process. The 82C59A is designed to relieve the system CPU from the task of polling in a multilevel priority system. The high speed and industry standard configuration of the 82C59A make it compatible with microprocessors such as 80C286, 80286, 80C86/88, 8086/88, 8080/85 and NSC800. The 82C59A can handle up to eight vectored priority interrupting sources and is cascadable to 64 without additional circuitry. Individual interrupting sources can be masked or prioritized to allow custom system configuration. Two modes of operation make the 82C59A compatible with both 8080/85 and 80C86/88/286 formats. Static CMOS circuit design ensures low operating power. The Intersil advanced CMOS process results in performance equal to or greater than existing equivalent products at a fraction of the power.
The 82C59A is a high‑performance CMOS priority interrupt controller designed to relieve the CPU from polling in multilevel priority systems. It supports 5 MHz, 8 MHz and 12.5 MHz versions and is pin‑compatible with the NMOS 8259A, making it suitable for a range of microprocessors such as the 8080/85, 8086/88 and 80286 families.
The device operates from a single 5 V supply, offers low static power consumption, and is available in commercial, industrial and military temperature ranges. It can handle up to eight vectored interrupt sources and can be cascaded to manage up to 64 sources without additional circuitry.
| Supply Voltage | Single 5 V |
|---|---|
| Operating Frequency Versions | 5 MHz, 8 MHz, 12.5 MHz |
| Maximum Interrupt Sources | 8 (expandable to 64) |
| Power Consumption (Static) | 10 µA max (ICCSB), 4 mA/MHz max (ICCOP) |
| Temperature Ranges | Commercial, Industrial, Military |
It operates from a single 5 V power supply.
It can handle up to eight vectored priority interrupt sources and can be cascaded to manage up to 64 sources.
Commercial, industrial and military temperature ranges are available.