71V321S35PF

Overview

The Renesas 71V321S35PF is a high-speed 16Kbit (2K x 8) dual-port static RAM featuring asynchronous parallel interfaces. It operates within a voltage range of 3V to 3.6V and supports access times of 35ns. The device integrates internal interrupt logic for interprocessor communications, allowing it to function as a standalone unit or in conjunction with master/slave configurations. It utilizes a 64-TQFP surface-mount package.

Feature Summary

• Dual-port architecture enabling simultaneous independent access by two processors
• Integrated interrupt logic designed for efficient interprocessor communication
• Asynchronous operation compatible with standard parallel memory interfaces

Applications

• Interprocessor communication systems requiring shared data exchange
• Stand-alone 8-bit dual-port RAM applications
• Master-slave dual-port configurations for wider word width systems

Procurement Notes

Verify component authenticity through authorized channels due to potential obsolescence status. Confirm specific suffix requirements against current datasheets as manufacturing updates may affect availability. Check for RoHS compliance variations across production batches. Ensure supply chain stability given the component's age and potential discontinuation risks.

Selection Notes

Select this component when dual-port asynchronous SRAM functionality is required for processor-to-processor data sharing. The 35ns access time suits moderate-speed embedded applications. Consider the 64-TQFP package constraints for PCB layout. Evaluate power consumption specifications if low standby modes are critical for the system design.

Part Context

This part belongs to the 71V321 series of dual-port SRAMs from Renesas Electronics. It shares architectural similarities with related models like the 71V321L series but differs in speed grades and packaging options. The series is designed for applications needing reliable, high-speed memory sharing between multiple processing units without external arbitration logic.

Replacement Considerations

The 71V321L25TFG is listed as an upgrade substitute. Verify pin compatibility and electrical parameter alignment before replacement. Note that speed grade differences may impact system timing requirements.