CS82C50A-5Z

Overview

The CS82C50A-5Z is a CMOS Programmable Peripheral Interface manufactured by Renesas Electronics Corporation. It provides 16 programmable I/O pins organized into two 8-bit ports (Port A and Port B). The device operates on a single 5V supply with a voltage range of 4.5V to 5.5V. It supports clock frequencies up to 8MHz for high-speed operation without wait states. The component is housed in a 40-pin PLCC package and features TTL compatibility, allowing direct interfacing with standard microprocessor buses.

Feature Summary

• Provides 16 programmable I/O lines divided into two independent 8-bit ports
• Supports three distinct modes of operation including basic input/output and strobed handshaking
• Features fully static design ensuring low standby power consumption
• Maintains pin compatibility with legacy NMOS devices while offering enhanced performance

Applications

• General-purpose parallel interface expansion for microprocessor systems
• Strobed data transfer applications requiring handshaking signals
• I/O port expansion in industrial control and measurement equipment
• Peripheral interfacing for 80C86/88 and compatible microprocessors

Procurement Notes

Verify the specific suffix '5Z' against the manufacturer's current datasheet to confirm package type and temperature rating. Ensure the ordering information matches the required RoHS compliance status and anneal specifications. Cross-reference the part number with official Renesas documentation to validate availability and any recent product change notices affecting this specific variant.

Selection Notes

Select this component when a system requires 16 parallel I/O lines rather than the 24 provided by the 82C55A family. It is suitable for designs where space constraints favor a 40-pin package over larger alternatives. Consider its 8MHz speed capability for systems needing faster data throughput than standard NMOS equivalents. Verify that the 5V logic levels align with the target microprocessor bus requirements.

Part Context

This part belongs to the 82C50 series of programmable peripheral interfaces, which are CMOS versions of industry-standard NMOS devices. It serves as a cost-effective solution for adding parallel I/O capabilities to embedded systems. The series is designed to be pin-compatible with older generations, facilitating upgrades in existing hardware architectures without significant board redesign.

Replacement Considerations

The IP82C50AZ is a documented equivalent from Integrated Programming Technology. Verify pinout and electrical characteristics before substitution. Check for any differences in operating temperature ranges or drive capabilities between the Renesas original and potential third-party replacements.