71V321L25TF8

Overview

The Renesas Electronics Corporation 71V321L25TF8 is a dual-port static random-access memory (SRAM) device with a storage capacity of 16 kbit, organized as 2K x 8 bits. It operates on a single 3.3V power supply ranging from 3.0V to 3.6V. The component features asynchronous parallel interface access with a maximum access time of 25 ns and a maximum power supply current of 130 mA. It is housed in a 64-pin Thin Quad Flat Package (TQFP) with dimensions of 10x10 mm. The device supports surface-mount installation and includes automatic power-down functionality controlled by chip enable signals.

Feature Summary

• True dual-ported architecture allowing simultaneous independent access to the same memory location from both ports
• On-chip port arbitration logic for managing concurrent read and write operations
• Interrupt flags facilitating direct communication between the two ports
• Battery backup capability maintaining data retention down to 2V

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded processing systems
• Data logging applications requiring non-volatile-like retention via battery backup
• Industrial control systems needing reliable asynchronous memory access

Procurement Notes

Verify the specific suffix TF8 against official Renesas documentation to confirm package type and moisture sensitivity level. Ensure compatibility with 3.3V logic levels and check for RoHS compliance status prior to integration. Confirm availability through authorized distributors as lead times may vary based on production cycles.

Selection Notes

Select this component when true dual-port simultaneous access is required without external arbitration hardware. Consider the 25 ns access speed and 16 kbit density for moderate-capacity buffering needs. Evaluate the TQFP-64 package constraints against board space requirements and thermal management capabilities for the target operating temperature range.

Part Context

This part belongs to the 71V321L series of high-speed dual-port SRAMs from Renesas Electronics. The series is designed for applications requiring independent port access and low standby power. The L variant typically denotes industrial or extended temperature ranges depending on the specific suffix, distinguishing it from commercial grade options within the broader product family.

Replacement Considerations

Direct substitutes include IDT71V321L25TF8. Verify pinout compatibility and electrical specifications before substitution. Alternative packages such as PLCC or TQFP variants with different suffixes may require schematic adjustments.