CP82C55A-5Z

Overview

The CP82C55A-5Z is a CMOS Programmable Peripheral Interface manufactured by Renesas Electronics Corporation. It provides 24 programmable I/O pins, organized into three 8-bit ports (Port A, Port B, and Port C). The device supports TTL-compatible logic levels and operates within a supply voltage range of 4.5 V to 5.5 V. It features a maximum clock frequency of 8 MHz and functions without wait states. The component is designed for through-hole installation in a 40-pin PDIP package.

Feature Summary

• Offers 24 individually programmable I/O pins divided into two groups of 12.
• Supports direct bit set/reset capability for individual pin control.
• Ensures low standby power consumption with static CMOS design.
• Maintains full TTL compatibility across the operating temperature range.

Applications

• General-purpose programmable I/O expansion for microprocessor systems
• Interface applications for 80C86 and 80C88 microprocessors
• Parallel data transfer control in industrial automation

Procurement Notes

Verify the specific suffix '5Z' against official Renesas documentation to confirm RoHS compliance and anneal specifications. Confirm the package type matches the required 40-pin DIP form factor. Check current lifecycle status as this component may be subject to discontinuation notices. Ensure the supplier provides valid traceability for the manufacturer part number.

Selection Notes

Select this component when a CMOS-based PPI is required for 8-bit microprocessor architectures. It serves as a drop-in replacement for NMOS 8255A designs due to pin compatibility. Consider the 8 MHz speed limit and 5V operation constraints during system design. Verify that the 40-pin DIP package fits the target PCB layout requirements.

Part Context

This part belongs to the CP82C55A series of programmable peripheral interfaces. It is a high-performance CMOS version of the industry-standard 8255A. The device utilizes a self-aligned silicon gate CMOS process to achieve lower power consumption while maintaining performance comparable to existing products.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult official Renesas documentation for qualified alternatives or cross-reference lists.