71421SA55PF

Overview

The Renesas Electronics Corporation 71421SA55PF is a dual-port static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 16 kilobits, organized as 2048 words by 8 bits. The device utilizes a parallel interface with an access time and write cycle time of 55 nanoseconds. It operates within a supply voltage range of 4.5 volts to 5.5 volts. The component is housed in a 64-pin Thin Quad Flat Package (TQFP) measuring 14x14 millimeters. It supports surface-mount installation and functions across an operating temperature range of 0°C to 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access for two processors or systems
• Asynchronous operation allowing flexible timing integration without external clock synchronization
• Parallel data interface supporting standard 8-bit word width connections

Applications

• High-speed data buffering between asynchronous system components
• Cache memory implementation in embedded processing architectures
• FIFO buffer applications requiring independent read/write ports

Procurement Notes

Verify the specific suffix PF against official Renesas documentation to confirm package dimensions and pinout compatibility. Confirm RoHS compliance status as older variants may not meet current environmental directives. Check for active production status or obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when independent concurrent access to shared memory is required. Ensure the design accommodates the 64-TQFP footprint and 4.5V to 5.5V power requirements. Verify that the 55ns speed meets the system timing constraints and that the commercial temperature range aligns with the operational environment.

Part Context

This part belongs to the 71421SA series of dual-port SRAMs manufactured by Renesas Electronics. These devices are designed for applications requiring high-performance memory sharing. The series typically offers various speed grades and package options to suit different board space and performance needs.

Replacement Considerations

Consult official Renesas substitution guides for verified alternatives. Potential replacements include updated LA-series variants or other dual-port SRAMs with compatible pinouts and electrical specifications.