CP82C55AZ

Overview

The CP82C55AZ is a CMOS Programmable Peripheral Interface manufactured by Renesas Electronics Corporation. It provides 24 programmable I/O pins organized into three 8-bit ports (A, B, and C). The device supports parallel interface communication with microprocessors such as the 80C86 and 80C88. Key electrical parameters include a supply voltage range of 4.5V to 5.5V and a maximum clock frequency of 8MHz. It operates within a commercial temperature range of 0°C to +70°C. The component is housed in a 40-pin Plastic Dual In-Line Package (PDIP) with dimensions of 53.2mm length, 14.73mm width, and 4.95mm height.

Feature Summary

• Offers 24 individually programmable I/O pins divided into two groups of 12 for flexible configuration.
• Supports direct bit set/reset capability for individual pin control without read-modify-write operations.
• Features TTL compatibility over the full operating temperature range and includes bus hold circuitry to eliminate external pull-up resistors.

Applications

• General-purpose programmable I/O expansion for microprocessor systems
• Interfacing with 80C86 and 80C88 microprocessors
• Industrial control systems requiring parallel I/O expansion

Procurement Notes

Verify the manufacturer part number against official Renesas documentation to ensure authenticity. Confirm that the specific suffix matches the required package type and temperature rating. Check for recent Product Change Notifications or End-of-Life notices from the manufacturer. Ensure compliance with RoHS directives if applicable to the target application environment.

Selection Notes

Select this component when a 40-pin through-hole package is required for parallel I/O expansion. Compare against other variants like the PLCC or MQFP packages if board space constraints differ. Verify that the 0°C to +70°C commercial temperature range meets the operational requirements of the final system design.

Part Context

This component belongs to the 82C55A family of programmable peripheral interfaces. It serves as a high-performance CMOS version of the industry-standard 8255A. The device is designed for use with various microprocessors, offering static CMOS circuit design for low power consumption while maintaining high-speed operation capabilities.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official Renesas documentation for potential cross-references or alternative packages within the same product family.