71V321SA55PF8

Overview

The 71V321SA55PF8 is a 16Kbit dual-port asynchronous SRAM manufactured by Renesas Electronics Corporation. It features a parallel memory interface and is organized as 2K x 8 bits. The device supports a supply voltage range of 3V to 3.6V with a maximum access time of 55 ns. It is housed in a 64-TQFP package measuring 14x14 mm and operates within an industrial temperature range of -40°C to 85°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access for two processors
• Asynchronous operation compatible with various system clock speeds
• Industrial temperature rating for extended environmental reliability

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded control systems
• Data storage in industrial automation controllers

Procurement Notes

Verify the specific suffix 'A' against official Renesas documentation, as it may indicate a specific package variant or revision not fully detailed in general distributor listings. Confirm RoHS compliance status, as some variants in this family are noted as non-compliant. Check for active obsolescence notices or recommended replacement parts such as the 71V321L series before finalizing procurement plans.

Selection Notes

Select this component when dual-port functionality is required for concurrent read/write operations without external arbitration logic. Ensure the 55 ns access speed meets the system timing requirements. Verify that the 64-TQFP footprint fits the PCB layout constraints and that the operating temperature range aligns with the deployment environment specifications.

Part Context

This part belongs to the Renesas 71V321S family of dual-port SRAMs. It shares architectural similarities with other members like the 71V321L series but differs in speed grades and package dimensions. The 'S' designation typically denotes specific performance characteristics within the broader product line.

Replacement Considerations

Publicly documented upgrades include the 71V321L25PFGI8 and 71V321L25PFG8. These alternatives offer faster 25 ns access times and may require verification of pin compatibility and electrical parameter alignment.