71321LA20TF8

Memory IC Overview

The Renesas Electronics Corporation 71321LA20TF8 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 power supply within a voltage range of 4.5V to 5.5V and supports an industrial temperature range from -40°C to +85°C. It is housed in a 64-pin Thin Quad Flat Package (TQFP) measuring 10mm x 10mm. Key functional attributes include true dual-ported memory cells allowing simultaneous access to the same location, internal interrupt logic for interprocessor communication, and automatic power-down capabilities controlled by chip enable signals.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to identical memory locations without conflict.
• Integrated internal interrupt logic providing two flags for direct port-to-port processor communication.
• On-chip arbitration logic manages bus contention, featuring a BUSY output flag to indicate active access periods.
• Automatic power-down mode reduces standby current consumption when chip enable inputs are deactivated.

Memory IC Applications

• Interprocessor communication links between microprocessors or digital signal processors.
• Master dual-port RAM configuration in systems expanding data bus width using slave devices.
• High-speed buffering applications requiring concurrent read/write operations from separate controllers.

Memory IC Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm RoHS compliance status as specifications may vary by production batch. Ensure proper handling procedures for moisture sensitivity level 3 components during storage and reflow soldering processes. Validate package dimensions against design requirements prior to integration.

Memory IC Selection Notes

Select this component for designs requiring concurrent access to shared memory resources without external arbitration logic. Consider the 20 ns access speed for timing-critical asynchronous interfaces. Evaluate thermal management requirements for the industrial temperature range if operating near extreme limits. Compare pinout compatibility with existing system layouts before finalizing the selection.

Memory IC Part Context

This part belongs to the 71321SA/LA series of dual-port SRAMs manufactured by Renesas Electronics. The 'LA' suffix typically denotes specific commercial or industrial temperature variants compared to the 'SA' series. These devices are designed to replace legacy IDT products, maintaining functional compatibility while offering updated manufacturing processes and packaging options.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers include 71321LA20PFG8 and 71321LA20TFG8. Verify pinout and electrical specifications match exactly before substitution. Note that package variations such as PLCC or different TQFP pitches may require board layout adjustments.