71V321S55PF

Overview

The 71V321S55PF is a 16Kb (2K x 8) asynchronous dual-port static random-access memory manufactured by Renesas Electronics Corporation. It features a parallel interface with a maximum access time and write cycle time of 55 ns. The device operates within a supply voltage range of 3V to 3.6V and supports surface-mount installation in a 64-TQFP package measuring 14x14 mm. It is designed for commercial temperature applications ranging from 0°C to +70°C.

Feature Summary

• Supports simultaneous independent read/write operations at two distinct ports without bus contention.
• Utilizes asynchronous logic for flexible timing integration into various system architectures.
• Provides high-density storage within a compact surface-mount footprint.

Applications

• Data buffering in telecommunications equipment
• Cache memory implementation in embedded systems
• FIFO buffer applications in industrial control systems

Procurement Notes

This component is officially discontinued and no longer manufactured by Renesas Electronics Corporation. Verification of authenticity is critical when sourcing remaining stock, as the part is not RoHS compliant. Buyers must confirm the specific revision level and packaging type against original design specifications before integration.

Selection Notes

Engineers should evaluate the 71V321L series as a direct upgrade path, noting that the L-series offers extended temperature ranges and improved compliance status. Design changes may be required if transitioning from the S-series due to potential differences in power consumption profiles or pinout configurations across the product generations.

Part Context

The 71V321S55PF belongs to the broader 71V321 family of dual-port SRAMs, which provides scalable memory solutions for high-speed data processing. This specific model represents the standard commercial grade variant within the S-series lineup, characterized by its 55 ns speed class and 3.3V operation.

Replacement Considerations

The 71V321L25PFG is listed as an upgraded replacement option by the manufacturer. Substitution requires verification of electrical compatibility and mechanical fit within the existing PCB layout constraints.