7133LA35GB

Overview

The Renesas Electronics Corporation 7133LA35GB is a high-speed, 32K-bit (2K x 16) dual-port static random-access memory. It features asynchronous parallel interface operation with a maximum access time of 35 ns. The device operates on a single 5V power supply within the 4.5V to 5.5V range and supports battery backup for data retention. It is housed in a 68-pin ceramic PGA package and is designed for industrial applications.

Feature Summary

• True dual-ported memory cells allow simultaneous independent access to the same memory location from both ports without conflict.
• On-chip port arbitration logic manages bus contention, providing a BUSY output flag to indicate when one port must wait for the other.
• Separate write control signals for the lower and upper bytes of each port enable flexible data bus width expansion.

Applications

• High-performance real-time engine systems requiring concurrent data processing
• Industrial equipment utilizing 32-bit microcontrollers such as the RX71M group
• Master/Slave dual-port RAM configurations for expanded word width systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Check for specific packaging variations and ensure the lead-free designation matches your manufacturing requirements. Validate that the ceramic PGA package dimensions align with your PCB footprint design.

Selection Notes

Select this model for applications requiring true simultaneous access to shared memory resources. The LA suffix indicates low-power characteristics suitable for battery-backed operations. Ensure the system voltage remains within the specified 4.5V to 5.5V range. Consider the 68-pin PGA package constraints for thermal management and board space allocation compared to surface-mount alternatives.

Part Context

This component belongs to the 7133SA/LA series of high-speed dual-port SRAMs. It serves as a standalone 16-bit memory or as a MASTER port paired with 7143 SLAVE devices. The series supports various access times and packages, including PLCC, TQFP, and PGA options, catering to diverse industrial and military-grade temperature ranges.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs if considering alternative manufacturers or different access speeds within the same family.