71321SA25TF

Memory IC Overview

The Renesas Electronics Corporation 71321SA25TF is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It features a storage capacity of 16 kbit organized as 2K x 8 bits. The component supports parallel interface operations with a maximum access time of 25 ns. It operates on a single 5V power supply within a voltage range of 4.5 V to 5.5 V. The device is designed for surface mount installation and is housed in a 64-pin TQFP package.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access from two ports.
• Integrated internal interrupt logic facilitating direct interprocessor communication.
• On-chip port arbitration logic with BUSY output flag to manage data bus contention.
• Automatic power-down mode controlled by chip enable signals for low standby power.

Memory IC Applications

• Stand-alone 8-bit dual-port RAM systems
• Master dual-port RAM configurations in 16-bit or wider word width systems
• Interprocessor communication interfaces requiring automatic arbitration

Memory IC Procurement Notes

Verify the exact suffix configuration against official documentation, as standard listings often specify TF8 or TFG8 variants. Confirm RoHS compliance status and moisture sensitivity levels prior to integration. Check for end-of-life notifications or discontinuance notices from the manufacturer to ensure long-term availability and support viability.

Memory IC Selection Notes

Select this component when true dual-port functionality with integrated interrupt signaling is required for asynchronous data exchange. Ensure the design accommodates the 64-pin TQFP footprint and 5V logic levels. Consider the 25 ns access speed relative to system timing requirements and verify compatibility with master-slave expansion architectures if wider data buses are needed.

Memory IC Part Context

This part belongs to the 71321SA series of dual-port SRAMs manufactured by Renesas Electronics. The series includes variations with different access times and package options, such as PLCC and TQFP formats. These devices are engineered for applications demanding high-speed, error-free operation without additional discrete logic for arbitration.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers for this specific variant were not identified in the provided source material. Verify cross-references with IDT-branded equivalents or updated Renesas LA-series components through official distributor channels.