7005S25J

Overview

The Renesas Electronics Corporation 7005S25J is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It provides a storage capacity of 64 kilobits organized as 8K words by 8 bits. The component features true dual-ported memory cells that allow simultaneous independent access to the same memory location from two separate ports. It operates with a single 5V power supply and supports parallel interface communication. The device includes on-chip hardware support for semaphore signaling and interrupt flags, facilitating master/slave configurations in systems requiring expanded data bus widths.

Feature Summary

• True dual-ported architecture enabling simultaneous reads of identical memory locations
• On-chip port arbitration logic supporting semaphore signaling between ports
• Asynchronous operation capability from either port without clock synchronization
• Hardware support for interrupt flags and master/slave system configurations

Applications

• Stand-alone 64K-bit dual-port RAM implementations
• Master/slave dual-port RAM combinations for 16-bit or wider word systems
• Battery backup operations requiring 2V data retention capabilities
• Industrial applications utilizing TTL-compatible single 5V power supplies

Procurement Notes

Verify component authenticity through authorized distributors due to potential obsolescence status. Confirm package type matches design requirements, as variants exist in PGA, PLCC, and TQFP formats. Check RoHS compliance status as older manufacturing runs may not meet current environmental standards. Validate lead-free availability if required by specific assembly processes. Review datasheet revisions for any pinout or electrical characteristic updates before final integration.

Selection Notes

Select this component when simultaneous independent access to shared memory is required without external arbitration logic. Ensure the design accommodates the specific package dimensions and thermal characteristics of the chosen variant. Verify that the system voltage aligns with the specified 5V operating range. Consider the asynchronous nature of the interface when designing timing constraints for both ports. Evaluate the need for semaphore functionality if complex multi-master interactions are anticipated.

Part Context

The 7005 series represents a family of high-speed dual-port SRAMs designed for applications demanding concurrent data access. Manufactured by Renesas Electronics Corporation, these devices bridge the gap between standard single-port memories and complex shared memory controllers. The 7005S25J specifically targets industrial and commercial environments where reliable, fast, and flexible memory sharing is critical for system performance and data integrity.

Replacement Considerations

Public confirmed substitute part numbers include IDT7005S25J8 and IDT7005S25J. Verify compatibility regarding package type and temperature range before substitution.