71342LA25PFI8

Overview

The Renesas Electronics Corporation 71342LA25PFI8 is a high-speed dual-port static random-access memory (SRAM) device. It features a storage capacity of 32 kilobits organized as 4K words by 8 bits. The component operates with asynchronous parallel interfaces and supports an access time of 25 nanoseconds. It utilizes a single 5V power supply within the 4.5V to 5.5V range. The device is housed in a 64-pin Thin Quad Flat Package (TQFP) measuring 14x14 mm. It supports industrial operating temperatures ranging from -40°C to +85°C.

Feature Summary

• True dual-ported architecture enabling simultaneous independent access to the same memory location from either port without conflict.
• Integrated hardware semaphore logic block for automatic arbitration and signaling between ports, including unassigned flags accessible by both sides.
• Automatic power-down feature controlled by chip enable and semaphore signals, allowing on-chip circuitry to enter low standby power mode.

Applications

• High-speed data buffering in telecommunications systems
• Cache memory implementation in embedded processing architectures
• Data logging applications requiring simultaneous read/write operations

Procurement Notes

Verify component authenticity through authorized distributors due to potential obsolescence risks. Confirm package marking and date codes against official Renesas documentation. Ensure environmental compliance requirements are met, noting RoHS status may vary by production batch. Validate lead-free soldering profiles compatible with TQFP packaging specifications before integration into manufacturing processes.

Selection Notes

Select this component when simultaneous bidirectional data access is required for real-time processing tasks. Consider the 25ns access speed for moderate-to-high frequency asynchronous interfaces. Evaluate the 64-TQFP footprint against available board space constraints. Verify temperature range suitability for industrial environments exceeding commercial limits.

Part Context

This part belongs to the 71342 series of dual-port SRAMs manufactured by Renesas Electronics. The series provides flexible memory solutions for applications needing independent port access. Variants differ primarily in access speeds and package types, such as PLCC or TQFP configurations. The LA suffix typically denotes specific temperature ranges and performance characteristics within the product line.

Replacement Considerations

The 71342SA25PFI8 is listed as an obsolete upgrade alternative. Verify pin compatibility and electrical specifications before substitution. Check for any changes in semaphore logic behavior or power consumption characteristics between original and replacement parts.