7025L20J

Memory IC Overview

The Renesas Electronics Corporation 7025L20J is a high-speed, asynchronous dual-port static random-access memory (SRAM) with a density of 128 kbit. The memory array is organized as 8K words by 16 bits. It features a parallel interface and supports simultaneous independent access from two ports. The device operates within a supply voltage range of 4.5 V to 5.5 V and has an access time of 20 ns. It is designed for surface-mount installation in a 68-pin PLCC package.

Memory IC Feature Summary

• True dual-ported architecture enabling simultaneous reads and writes from separate ports
• Asynchronous operation allowing flexible timing control for both ports
• On-chip hardware support for semaphore signaling and port arbitration logic
• TTL-compatible single 5V power supply operation

Memory IC Applications

• Stand-alone 128K-bit dual-port RAM systems
• Master/Slave dual-port configurations for 32-bit or wider data bus expansion
• High-speed data buffering between asynchronous subsystems
• Multiprocessor cache coherency applications

Memory IC Procurement Notes

Verify the specific suffix 'J' against official Renesas documentation to confirm the exact package type and temperature grade. Confirm RoHS compliance status and moisture sensitivity level prior to procurement. Check for active production status or obsolescence notices. Ensure the selected distributor provides valid traceability documents. Validate pinout compatibility with existing PCB layouts before ordering.

Memory IC Selection Notes

Select this component when simultaneous independent access to shared memory is required without external arbitration overhead. The 20 ns access time suits moderate-speed asynchronous interfaces. Consider the 68-pin PLCC package constraints for board space. Verify that the 4.5 V to 5.5 V operating range aligns with the system power rails. Evaluate thermal requirements for the intended industrial or commercial temperature range.

Memory IC Part Context

The 7025L20J belongs to the Renesas 7025 family of high-speed dual-port SRAMs. This family offers various access times and packaging options to accommodate different performance and form-factor needs. The 7025 series is widely used in telecommunications and industrial automation where reliable, fast data sharing between processors is critical. It serves as a bridge between components operating at different clock domains.

Memory IC Replacement Considerations

Consult official Renesas substitution guides for verified equivalents. Cross-reference pinouts and electrical characteristics carefully. Verify package dimensions match the existing footprint. Ensure functional compatibility regarding semaphore and interrupt signals.