71321SA35TF

Memory IC Overview

The Renesas Electronics Corporation 71321SA35TF is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It features a storage capacity of 16 kilobits organized as 2K words by 8 bits. The component supports parallel interface operations with an access time of 35 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The device is housed in a 64-pin Thin Quad Flat Package (TQFP) designed for surface-mount technology applications.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to the same memory location from both ports without conflict.
• Integrated internal interrupt logic providing two flags for direct port-to-port communication and interprocessor signaling.
• On-chip port arbitration logic manages bus contention, allowing expansion to 16-bit or wider data buses when paired with compatible slave devices.

Memory IC Applications

• Interprocessor communication buffers in multi-core or distributed processing systems
• Master dual-port RAM configurations expanding data bus width using slave SRAM devices
• Real-time data logging and buffering in industrial control equipment

Memory IC Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity and moisture sensitivity level handling requirements before assembly. Cross-reference datasheet revisions to ensure compatibility with existing design specifications and regulatory compliance standards.

Memory IC Selection Notes

Select this component for designs requiring non-blocking simultaneous read/write operations between two processors. Ensure system voltage aligns with the specified 5V tolerance. Consider thermal management for the TQFP package if operating near maximum temperature limits.

Memory IC Part Context

This part belongs to the 71321SA series of dual-port SRAMs manufactured by Renesas Electronics. It is functionally similar to legacy IDT products. The device is designed for standalone use or as a master unit in expanded memory architectures.

Memory IC Replacement Considerations

Officially documented substitutes include the 71321LA20TFG and 71V321S35TF8. Verify pinout compatibility and voltage specifications before substitution.