CP82C59AZ

Specialized Overview

The CP82C59AZ is a high-performance CMOS Priority Interrupt Controller manufactured by Renesas Electronics Corporation. It serves as a static CMOS version of the industry-standard NMOS 8259A, designed to relieve system CPUs from polling tasks in multilevel priority systems. The device handles up to eight vectored priority interrupting sources and is cascadable to 64 levels without additional circuitry. It supports individual request masking and prioritization for custom system configurations. The controller operates on a single 5V power supply and features fully TTL-compatible interfaces. It is available in commercial, industrial, and military temperature ranges, ensuring compatibility with microprocessors such as the 80C286, 80286, 80C86/88, 8086/88, 8080/85, and NSC800.

Specialized Feature Summary

• Eight-level priority control expandable to 64 levels via cascading
• Fully static CMOS design for low power consumption
• Individual interrupt source masking and prioritization capabilities
• Compatible with both 8080/85 and 80C86/88/286 processor formats

Specialized Applications

• Multilevel priority interrupt systems for 80C286 and 80286 processors
• Peripheral interrupt control for 80C86/88 and 8086/88 architectures
• System integration requiring low-power static CMOS interrupt handling

Specialized Procurement Notes

Verify component authenticity through authorized Renesas distributors or certified secondary market suppliers. Request original manufacturer documentation and traceability records to confirm provenance. Inspect physical markings for consistency with official datasheet specifications. Ensure storage conditions comply with moisture sensitivity level requirements to prevent package damage prior to assembly.

Specialized Selection Notes

Select the CP82C59AZ when a static CMOS replacement for the NMOS 8259A is required for legacy 8-bit and 16-bit microprocessor systems. Consider this component for designs needing reduced power consumption while maintaining full pin compatibility. Verify that the specific temperature grade (commercial, industrial, or military) meets the operational environment requirements of the target application.

Specialized Part Context

The CP82C59AZ belongs to the 82C59A family of priority interrupt controllers produced by Renesas Electronics (formerly Intersil). This series represents the CMOS evolution of the classic 8259A, offering improved performance and lower power usage. The 'CP' prefix typically denotes a commercial temperature range variant within the broader product line, which also includes industrial and military grades.

Specialized Replacement Considerations

The CP82C59AZ is functionally pin-compatible with the NMOS 8259A. Other valid replacements include the IS82C59A and ID82C59A, depending on the required package type and operating temperature range. Ensure that any substitute maintains the same voltage supply and interface timing characteristics.