7134SA25JI8

Overview

The Renesas Electronics Corporation 7134SA25JI8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It provides a storage capacity of 32 kilobits organized as 4K words by 8 bits. The component features independent access ports allowing simultaneous read and write operations to the same memory location without conflict. It operates with a maximum access time of 25 nanoseconds and requires a single 5V power supply within the 4.5V to 5.5V range. The device is housed in a 52-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount applications.

Feature Summary

• True dual-ported architecture enabling simultaneous independent access from both ports
• Integrated hardware semaphore logic for automatic arbitration between ports
• Asynchronous operation supporting flexible system timing requirements

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in industrial control systems
• Data logging in real-time monitoring devices

Procurement Notes

Verify current availability status as this component may be discontinued or subject to limited production runs. Confirm RoHS compliance requirements against specific project standards, as older variants often lack lead-free certification. Validate that the 52-PLCC package dimensions match existing PCB footprints. Ensure design-in support documentation is accessible for integration purposes.

Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration circuitry. The integrated semaphore mechanism simplifies multi-processor communication protocols. Consider the 25ns speed grade relative to system clock frequencies. Evaluate the PLCC package suitability against automated assembly capabilities and thermal management needs for the target enclosure.

Part Context

This part belongs to the 7134SA series of dual-port SRAMs manufactured by Renesas Electronics. The series is characterized by its ability to resolve port conflicts internally via semaphore flags. It serves as a bridge between different processing speeds in mixed-signal environments. The technology supports battery backup modes for data retention during power loss events.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.