7005S25PF

Overview

The Renesas Electronics Corporation 7005S25PF is an asynchronous dual-port static random-access memory (SRAM) with a density of 64 kilobits, organized as 8K by 8 bits. It features a 25 nanosecond access time and operates on a single 5.0-volt TTL-compatible power supply within the commercial temperature range of 0°C to 70°C. The device utilizes a 64-pin Thin Quad Flat Package (TQFP) with a 14.0 x 14.0 mm footprint and 0.8 mm pitch. Key functional attributes include true dual-ported memory cells for simultaneous reads, on-chip hardware semaphore signaling, interrupt flags, and automatic power-down modes controlled by chip enable inputs.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to shared memory locations from two distinct ports.
• Integrated hardware support for master/slave configurations, including on-chip semaphore signaling and interrupt flag generation for port arbitration.
• Asynchronous operation allowing flexible interface integration without requiring synchronized clock signals for data transfer.

Applications

• High-speed data buffering in telecommunications equipment requiring low-latency parallel interfaces.
• Master/slave dual-port memory systems for 16-bit or wider data bus expansion in industrial control applications.
• Battery-backed memory circuits utilizing the device's 2V data retention capability for critical state preservation.

Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm package integrity and moisture sensitivity level handling procedures prior to assembly. Review official datasheets for specific pinout definitions and electrical characteristics matching system requirements. Ensure compliance with export control classifications and environmental regulations applicable to legacy semiconductor components.

Selection Notes

Select this component when simultaneous bidirectional memory access is required without external arbitration logic. The 25 ns speed suits moderate-frequency asynchronous systems. Verify thermal management capabilities for the TQFP package within the 0°C to 70°C operating range. Consider alternative packages like PLCC if leaded soldering processes are mandated over surface mount technology.

Part Context

The 7005 series represents a family of high-speed dual-port SRAMs designed for standalone or combined master/slave operations. This specific model belongs to the commercial grade subset, distinguished by its 25 ns access time and standard plastic packaging options. It serves as a foundational memory solution for embedded systems needing concurrent read/write capabilities across separate processor domains.

Replacement Considerations

Official upgrade paths may include variants such as the 7005L20PFGI. Verify pin compatibility and electrical specifications before substitution. Cross-reference package dimensions and lead counts to ensure mechanical fit within existing board layouts.