71V321L55TFI8

Overview

The 71V321L55TFI8 is a dual-port static random-access memory integrated circuit manufactured by Renesas Electronics Corporation. It provides a storage capacity of 16 kilobits organized as 2K words by 8 bits. The device features asynchronous parallel interface operation with a maximum access time and write cycle time of 55 nanoseconds. It operates on a single 3-volt to 3.6-volt power supply and supports surface-mount installation in a 64-pin TQFP package measuring 10x10 millimeters. The component functions within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Supports simultaneous independent access to the same memory location from both ports using true dual-ported memory cells.
• Includes on-chip port arbitration logic to manage concurrent read and write operations without conflict.
• Provides interrupt flags to facilitate communication and status signaling between the two independent ports.

Applications

• High-speed data buffering in telecommunications equipment
• Network switch and router packet processing buffers
• Industrial control systems requiring low-latency data exchange

Procurement Notes

Verify current availability status as this part number may be discontinued or subject to limited production runs. Confirm that the 64-TQFP package dimensions match your PCB footprint requirements. Ensure voltage levels align with the specified 3V to 3.6V operating range. Check for moisture sensitivity level handling requirements during assembly. Validate RoHS compliance status against specific project regulations before procurement.

Selection Notes

Select this component when dual-port architecture is required for simultaneous host and peripheral access. Choose based on the 55ns speed grade if higher performance variants are unnecessary. Consider the 64-TQFP package for surface-mount assembly constraints. Verify that the 16Kb capacity meets system memory needs without excessive overhead. Ensure thermal management supports the industrial temperature range specifications.

Part Context

This component belongs to the 71V321L series of dual-port SRAMs from Renesas Electronics. The series offers various speed grades and packaging options to suit different application timing and physical layout requirements. These devices are designed for applications demanding high-speed, non-blocking data transfer between two independent bus masters.

Replacement Considerations

Consult official manufacturer documentation for verified substitute part numbers. Cross-reference pinouts and electrical characteristics carefully. Verify package compatibility and thermal performance equivalence. Confirm functional parity regarding dual-port arbitration and interrupt mechanisms.