CS82C55AZ96

Overview

The CS82C55AZ96 is a CMOS Programmable Peripheral Interface (PPI) manufactured by Renesas Electronics Corporation. It serves as a high-performance, static CMOS version of the industry-standard NMOS 8255A. The device features 24 programmable I/O pins organized into three 8-bit ports (Port A, Port B, and Port C), which can be individually programmed into two groups of 12 bits. It supports parallel interface communication with a maximum clock frequency of 8 MHz and operates within a supply voltage range of 4.5 V to 5.5 V. The component is housed in a 44-pin PLCC package and is designed for full TTL compatibility.

Feature Summary

• Fully compatible with NMOS 8255A pinouts while offering enhanced performance through static CMOS design.

Applications

• General-purpose programmable I/O expansion for microprocessor systems
• Interface solutions for 80C86 and 80C88 microprocessors
• Industrial control applications requiring parallel I/O management

Procurement Notes

Verify the specific suffix 'Z96' against official Renesas documentation to confirm tape-and-reel packaging specifications and moisture sensitivity level. Ensure that the commercial temperature range (0°C to +70°C) aligns with the target application environment requirements before finalizing procurement decisions.

Selection Notes

Select this component when a drop-in replacement for the legacy 8255A is required with improved power efficiency and higher speed capabilities. Consider the 44-lead PLCC package constraints and ensure the system design accommodates the 4.5V to 5.5V operating voltage range without additional level shifting.

Part Context

This part belongs to the 82C55A series of CMOS Programmable Peripheral Interfaces. It is functionally equivalent to the Intersil IS82C55A but may differ in packaging or manufacturing origin due to corporate acquisitions. The 'CS' prefix typically denotes the commercial temperature grade variant within the broader 82C55 family.

Replacement Considerations

The IS82C55AZ96 is a direct functional substitute from the same manufacturer lineage. For alternative sources, verify compatibility with other 82C55A-compatible PPIs from vendors like Texas Instruments or NXP, ensuring pinout and electrical characteristics match exactly.