71V321SA35PF

Overview

The 71V321SA35PF is a 16Kbit dual-port asynchronous static random-access memory (SRAM) manufactured by Renesas Electronics. It is organized as 2K x 8 bits and features a 35ns access time. The device operates on a single 5V power supply, with voltage specifications ranging from 4.5V to 5.5V. It supports parallel interface communication and includes automatic power-down functionality controlled by the chip enable signal to minimize standby power consumption. The component is housed in a 64-pin Thin Quad Flat Package (TQFP).

Feature Summary

• Dual-port architecture enabling independent simultaneous access by two processors.
• Integrated interrupt logic for efficient interprocessor communications.
• Automatic power-down mode activated by chip enable signals.
• Asynchronous operation without requiring additional discrete logic.

Applications

• Stand-alone 8-bit dual-port RAM systems.
• Master dual-port RAM modules in 16-bit or wider word width configurations.
• Interprocessor communication interfaces requiring full-speed error-free data transfer.

Procurement Notes

Verify component authenticity through authorized channels due to obsolete status. Confirm package integrity and moisture sensitivity handling requirements prior to assembly. Review official datasheets for pinout compatibility and electrical characteristics. Ensure supply chain sources provide valid traceability documentation. Check for qualified replacement parts if new production is required.

Selection Notes

Select this component for applications requiring independent dual-port access to 8-bit memory spaces. Suitable for systems needing integrated interrupt signaling between processors. Verify voltage compatibility with 5V logic levels. Consider package constraints for 64-pin TQFP footprints. Evaluate power consumption needs against the automatic power-down capabilities provided.

Part Context

This part belongs to the 71V321 series of dual-port SRAMs from Renesas Electronics. It serves as a high-speed memory solution for embedded systems and industrial applications. The series is designed to facilitate complex data sharing between multiple processing units without external arbitration logic.

Replacement Considerations

• 71V321L35PF

FAQ

What is the organization of the 71V321SA35PF memory array?

The memory array is organized as 2K x 8 bits, providing a total storage capacity of 16Kbits.

How does the device manage power consumption during idle states?

An automatic power-down feature, controlled by the chip enable (CE) signal, allows the on-chip circuitry of each port to enter a very low standby power mode.