7005S25PFI

Overview

The Renesas Electronics Corporation 7005S25PFI is a static random-access memory (SRAM) device organized as 8K x 8 bits, providing a total storage capacity of 64 kbit. It features asynchronous dual-port architecture with parallel interface and 25 ns access time. The component operates on a single 5.0 V supply voltage ranging from 4.5 V to 5.5 V. It is housed in a 64-pin TQFP surface-mount package with dimensions of 14.0 x 14.0 mm. The device supports standard TTL logic levels and includes functional capabilities such as busy flags, interrupts, master/slave modes, semaphores, and interrupt handling.

Feature Summary

• Dual-port asynchronous SRAM architecture enabling independent simultaneous access by two masters
• Integrated hardware control features including busy flags, semaphores, and interrupt signals for multi-processor coordination
• Supports master, slave, and semaphore operational modes for complex system synchronization

Applications

• Multi-processor systems requiring shared data buffer management
• Industrial automation controllers needing high-speed local memory
• Communication equipment utilizing dual-port buffering for protocol processing

Procurement Notes

This component is officially classified as obsolete and no longer manufactured by Renesas Electronics. Verification of authenticity is critical when sourcing from secondary markets due to the risk of counterfeit or refurbished units. Buyers must confirm the specific lot date code and physical condition against original datasheet specifications before integration into production designs.

Selection Notes

Designers should evaluate the 7005L25PFI as a potential upgrade path, offering similar performance within an extended industrial temperature range. Alternative packages such as PLCC are available under different suffixes like 7005S25J8 if through-hole mounting is required. Ensure that the replacement part matches the required voltage and timing specifications for the target application.

Part Context

The 7005S25PFI belongs to the Renesas 7005 series of dual-port SRAMs, originally developed under the IDT brand before acquisition. This series is designed for applications requiring fast, reliable data exchange between processors. The 'S' suffix typically denotes commercial temperature range operation, distinguishing it from the 'L' variant which supports wider environmental conditions.

Replacement Considerations

The 7005L25PFI is documented as an upgrade alternative. Verify pin compatibility and thermal characteristics before substitution.