71342LA25PF8

Overview

The Renesas Electronics Corporation 71342LA25PF8 is a high-speed 4K x 8 Dual-Port Static RAM. It features true dual-ported memory cells allowing simultaneous access to the same location and fully asynchronous operation from either port. The device includes on-chip hardware support for semaphore signaling between ports, facilitating arbitration. It operates with a TTL-compatible single 5V power supply and supports battery backup data retention at 2V. The component is available in a 64-pin TQFP package.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to shared memory locations by both ports.
• Integrated hardware semaphore logic block for automatic port arbitration and conflict resolution.
• Automatic power-down feature controlled by chip enable signals to minimize standby power consumption.

Applications

• Systems requiring full-speed error-free operation without external arbitration logic
• Parallel interface memory applications needing concurrent read/write access
• Battery-backed memory systems requiring low-voltage data retention

Procurement Notes

Verify the exact suffix against official documentation, as 'PF8' may indicate specific packaging or revision details not explicitly detailed in general summaries. Confirm RoHS compliance status and moisture sensitivity levels prior to integration. Ensure the selected variant matches the required temperature range and package dimensions for the target PCB design.

Selection Notes

Select this component when simultaneous dual-port access is critical and internal arbitration is preferred over external logic. Compare performance metrics such as access time and power consumption against other variants in the 71342 series. Verify that the 64-pin TQFP package fits the mechanical constraints of the assembly process.

Part Context

This part belongs to the 71342 series of Dual-Port SRAMs designed for high-speed parallel applications. The series offers various speed grades and package options, including PLCC and TQFP configurations. The LA suffix typically denotes industrial temperature range availability and battery backup support capabilities within the product family.

Replacement Considerations

Official substitutes include the 71342LA25PFGI and 71342SA55PFI. Verify pin compatibility and electrical specifications before substitution. Note that some alternatives may have different temperature ranges or package types.