71V321S55PF8

Overview

The Renesas Electronics Corporation 71V321S55PF8 is a dual-port static random access memory (SRAM) integrated circuit. It provides a storage capacity of 16 kilobits, organized as 2K words by 8 bits. The device features asynchronous parallel interface with an access time of 55 nanoseconds and a write cycle time of 55 nanoseconds. It operates within a supply voltage range of 3 volts to 3.6 volts. The component is housed in a 64-pin Thin Quad Flat Package (TQFP) measuring 14x14 millimeters. It supports surface mount installation and functions within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous read/write operations on separate ports.

Applications

• Data buffering in high-speed digital signal processing systems.

Procurement Notes

Verify the exact suffix configuration against official documentation, as variations such as PFGI8 or PF8 may indicate differences in packaging or lead finish. Confirm RoHS compliance status, as specific suffixes may not meet current environmental regulations. Check for obsolescence notices, as this part number is listed as discontinued in distributor records. Ensure compatibility with existing board layouts regarding the 64-TQFP footprint and pin assignments before procurement.

Selection Notes

Select this component when independent port access is required for concurrent data handling. Compare performance metrics against the 71V321L series for speed and temperature grade requirements. Verify that the 55 ns access time meets system timing constraints. Consider the 64-TQFP package dimensions for mechanical fit within the target enclosure. Evaluate power consumption specifications relative to system thermal management capabilities.

Part Context

This device belongs to the 71V321S family of dual-port SRAMs from Renesas Electronics. It shares architectural similarities with other members like the 71V321S25PF8 but differs in access speed and operating temperature range. The 'S' designation typically indicates specific speed and temperature characteristics distinct from the 'L' series variants. It serves as a legacy component in designs requiring reliable dual-port memory solutions.

Replacement Considerations

The 71V321L25PFGI8 is documented as an upgrade replacement. Verify electrical parameter compatibility, particularly access time and voltage ranges, before substitution. Assess package pinout equivalence to ensure direct socketing or reflow compatibility without PCB redesign.