71321LA20TFG

Memory IC Overview

The Renesas Electronics Corporation 71321LA20TFG is a high-speed, 16Kb (2K x 8) dual-port static random-access memory (SRAM). It features asynchronous parallel interface operation with a maximum access time of 20 ns. The device operates on a single 5V ±10% power supply and supports battery backup data retention down to 2V. It is housed in a 64-pin Thin Quad Flat Package (TQFP) and functions as a master dual-port RAM for interprocessor communications.

Memory IC Feature Summary

• True dual-ported memory cells allow simultaneous independent access to the same memory location from both ports without conflict.
• Integrated internal interrupt logic provides two INT flags for efficient port-to-port communication between processors.
• On-chip port arbitration logic manages bus access, featuring a BUSY output flag to indicate busy status during arbitration.

Memory IC Applications

• Stand-alone 8-bit dual-port RAM systems
• Master dual-port RAM configuration paired with 71421 Slave devices for 16-bit or wider data buses
• Interprocessor communication interfaces requiring low-latency data exchange

Memory IC Procurement Notes

Verify the exact suffix against official documentation, as '71321LA20TFG' may represent a partial part number. Confirm package dimensions, temperature range, and RoHS compliance status directly with the manufacturer's datasheet before procurement to ensure compatibility with design requirements.

Memory IC Selection Notes

Select this component when designing systems requiring true dual-port memory with integrated arbitration and interrupt capabilities. Ensure the application utilizes a 5V supply and requires 20 ns access speeds. Consider the 71421 series if expansion to 16-bit width is necessary for the specific architecture.

Memory IC Part Context

This component belongs to the 71321SA/LA family of high-speed dual-port SRAMs manufactured by Renesas Electronics. The 'LA' designation typically indicates commercial temperature range availability, while the '20' denotes the 20 ns speed grade. These devices are designed for robust standalone or cascaded memory applications.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers for this specific variant were not identified in the provided source material. Consult the manufacturer's latest replacement guide for verified upgrades or pin-compatible alternatives.