71V321S55TF

Overview

The Renesas Electronics Corporation 71V321S55TF is a dual-port static random-access memory (SRAM) integrated circuit. It features an asynchronous parallel interface with a storage capacity of 16 kilobits, organized as 2K words by 8 bits. The device supports a supply voltage range of 3V to 3.6V and offers a maximum access time of 55 nanoseconds. It is housed in a 64-pin Thin Quad Flat Package (TQFP) measuring 14x14 mm. The component operates within a temperature range of -40°C to +85°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous read/write operations on both ports
• Asynchronous parallel interface for flexible system integration
• Extended industrial operating temperature range for robust performance

Applications

• High-speed data buffering in communication systems
• Cache memory implementation in embedded processors
• Data logging applications requiring non-volatile-like persistence during power cycles

Procurement Notes

Verify the specific suffix 'TF' against official Renesas documentation to confirm package dimensions and pinout compatibility. Confirm RoHS compliance status as older variants may not meet current environmental standards. Check for active obsolescence notices or end-of-life notifications from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when dual-port functionality is required for concurrent host and peripheral access. Ensure the 55ns speed meets system timing requirements. Verify that the 64-TQFP footprint matches the PCB layout constraints. Consider the extended temperature range if the application environment exceeds commercial limits.

Part Context

This part belongs to the 71V321S series of dual-port SRAMs. The 'S' designation typically indicates the extended industrial temperature range variant. It is part of Renesas's legacy IDT product line, now managed under the Renesas brand following corporate acquisitions. The series provides high-reliability memory solutions for industrial and automotive applications.

Replacement Considerations

Official upgrade alternatives include the 71V321L25PFGI8. Verify pin-to-pin compatibility and electrical parameter alignment before substitution.