71V30S55TFG

Overview

The Renesas Electronics Corporation 71V30S55TFG is a high-speed, asynchronous dual-port static random-access memory (SRAM) with an 8-kbit density organized as 1K x 8. It features fully independent ports for simultaneous access to the same memory location and operates on a single 3.3V ±0.3V power supply. The device provides a maximum access time of 55 ns and supports battery backup operation with data retention down to 2V. It is housed in a 64-pin STQFP package and is designed for commercial temperature ranges.

Feature Summary

• True dual-ported memory cells enable simultaneous read/write access to identical memory locations from both ports.
• On-chip port arbitration logic manages conflicts between concurrent port operations automatically.
• Interrupt flags facilitate direct communication and status signaling between the two independent ports.

Applications

• High-speed data buffering in telecommunications equipment
• Real-time processing systems requiring low-latency memory access
• Industrial control applications needing reliable dual-port data exchange

Procurement Notes

Verify the specific suffix 'TFG' against official Renesas documentation to confirm the exact package type and temperature grade. Ensure compatibility with existing board layouts regarding the 64-pin STQFP footprint. Confirm that the 3.3V operating voltage aligns with system power rails before procurement.

Selection Notes

Select this component when simultaneous independent access to shared memory is required without external arbitration hardware. The 55 ns access speed suits moderate-speed asynchronous interfaces. Verify that the commercial temperature range meets environmental requirements, as industrial variants may have different suffixes.

Part Context

This part belongs to the 71V30 series of dual-port SRAMs, which are designed for applications requiring high-speed data sharing between two processors or controllers. The series offers various access speeds and packaging options to fit diverse design constraints while maintaining consistent functional architecture.

Replacement Considerations

Direct substitutes include other 71V30 series parts with compatible pinouts and electrical characteristics, such as the 71V30L35TFGI or 71V30S55TFGI, provided they match the required access time and package dimensions.

FAQ

Can both ports access the same memory address simultaneously?

Yes, the device features true dual-ported memory cells that allow simultaneous access to the same memory location, managed by on-chip arbitration logic.

What is the minimum voltage for data retention?

The device supports battery backup operation with data retention down to 2V.