71321LA25PF

Memory IC Overview

The 71321LA25PF is a high-speed, asynchronous dual-port static random-access memory (SRAM) manufactured by Renesas Electronics Corporation. It features a storage capacity of 16 kilobits organized as 2K words by 8 bits. The device supports parallel interface access with a maximum access time of 25 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The component is housed in a 64-pin Thin Quad Flat Package (TQFP) and is designed for industrial temperature ranges.

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 efficient interprocessor communication between connected systems.
• Automatic power-down functionality controlled by chip enable signals to minimize standby power consumption during idle periods.
• On-chip port arbitration logic that facilitates expansion to 16-bit or wider data bus widths when paired with compatible slave devices.

Memory IC Applications

• Interprocessor communication links in distributed computing architectures
• High-speed data buffering in telecommunications equipment
• Real-time signal processing applications requiring concurrent read/write operations
• Master-slave memory configurations for expanded data width systems

Memory IC Procurement Notes

Verify the specific suffix requirements for package type and temperature grade against official datasheets. Confirm RoHS compliance status as legacy variants may differ. Check for obsolescence notices or last-time buy notifications from the manufacturer. Ensure pin compatibility with existing PCB footprints before procurement.

Memory IC Selection Notes

Select this component for designs requiring true simultaneous access to shared memory resources. Consider the 25ns access speed relative to system clock requirements. Evaluate the 64-pin TQFP package constraints for board space. Verify power supply stability within the specified 4.5V to 5.5V range for reliable operation.

Memory IC Part Context

This part belongs to the 71321 series of dual-port SRAMs, which are designed for high-performance embedded applications. The series distinguishes itself through integrated interrupt logic and arbitration capabilities, reducing the need for external control circuitry in complex multi-processor environments.

Memory IC Replacement Considerations

The 71321LA25PFGI is listed as an upgrade alternative. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement meets the required industrial temperature range and package dimensions.