IS82C55AZ96

Overview

The IS82C55AZ96 is a CMOS Programmable Peripheral Interface (PPI) manufactured by Renesas Electronics Corporation, belonging to the 82C55A series. It provides 24 programmable I/O pins organized into three 8-bit ports (Port A, Port B, and Port C), which can be configured as two 12-bit groups. The device operates on a single 5V supply with a voltage range of 4.5 V to 5.5 V and supports a maximum clock frequency of 8 MHz. It features TTL compatibility, interrupt output capability, and direct bit set/reset functionality. The component is housed in a 44-pin PLCC package and is designed for surface mount installation, operating within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Provides 24 individually programmable I/O pins configurable in three major modes of operation
• Features fully static CMOS design ensuring low standby power consumption and high-speed no wait state operation
• Includes interrupt output capability and direct bit set/reset control for enhanced system management

Applications

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

Procurement Notes

Verify the specific suffix '96' against official Renesas documentation to confirm packaging configuration, as distributor listings may vary. Confirm moisture sensitivity level and reflow soldering profile requirements prior to assembly. Ensure the source document explicitly identifies the manufacturer as Renesas or Intersil to validate authenticity and traceability.

Selection Notes

Select this component when a 44-pin PLCC surface mount package is required for 82C55A compatibility. Choose this part over through-hole variants if PCB space constraints necessitate a compact footprint. Verify that the 8 MHz maximum clock speed meets the system timing requirements and that the industrial temperature range aligns with the operational environment.

Part Context

This component is part of the broader 82C55A family of programmable peripheral interfaces. It serves as a CMOS version of the industry-standard NMOS 8255A, offering pin compatibility while providing improved power efficiency and performance. The device is widely used in legacy and modern embedded systems requiring flexible parallel I/O expansion capabilities.

Replacement Considerations

CMS82C55AZ96 is a verified alternative from the same manufacturer family. IMS82C55AZ and IP82C55AZ are functionally similar but differ in package type (PLCC vs DIP) and availability status. Verify pinout compatibility before substitution.