71342LA25PF

Overview

The Renesas Electronics Corporation 71342LA25PF is a high-speed dual-port static random-access memory (SRAM) component. It features a storage capacity of 32 kbit, organized as 4K words by 8 bits. The device supports asynchronous parallel interface operation with an access time of 25 ns. It operates within a supply voltage range of 4.5 V to 5.5 V and includes on-chip semaphore logic for hardware port arbitration. The component is designed for surface-mount installation in a 64-pin TQFP package.

Feature Summary

• True dual-ported memory cells allow simultaneous independent access to the same memory location from either port without wait states.
• Integrated semaphore logic block provides hardware support for arbitrating access between ports using unassigned flags.
• Automatic power-down feature reduces standby power consumption when chip enable and semaphore signals are inactive.

Applications

• Systems requiring simultaneous data access from two independent processors or controllers
• High-speed buffering applications where contention must be managed via hardware arbitration
• Embedded systems utilizing asynchronous parallel memory interfaces

Procurement Notes

Verify the specific suffix against official documentation, as variations such as PFGI8 indicate reel packaging while others may use trays. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the selected variant matches the required operating temperature range and package dimensions for your PCB design constraints.

Selection Notes

Select this component when true dual-port functionality with integrated arbitration is required for 32 kbit memory configurations. Compare access times and power consumption against other variants in the series. Verify that the 64-pin TQFP package fits the available board space and that the 5V TTL-compatible interface aligns with the system logic levels.

Part Context

This part belongs to the Renesas 71342 series of dual-port SRAMs. The series offers various densities and speeds, with the LA suffix typically denoting industrial temperature ranges and battery backup capabilities. The 71342 specifically focuses on the 4K x 8 organization with built-in semaphore logic for simplified multi-master designs.

Replacement Considerations

Official upgrades include the 71342LA25PFGI8. Verify pinout compatibility and electrical specifications before substitution. Other series members like the 71342SA25PFI8 offer similar performance but may differ in packaging or environmental ratings.