7143SA90GB

Overview

The Renesas Electronics Corporation 7143SA90GB is a high-speed, 32Kb (2K x 16) dual-port static random-access memory (SRAM). It features asynchronous parallel interface operation with a maximum access time of 90 ns. The device operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. It is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package measuring 24.21mm x 24.21mm. The component supports surface mount installation and functions within an ambient temperature range of 0°C to 70°C.

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 automatically, eliminating the need for external discrete control circuitry.
• Separate write control signals for the upper and lower bytes of each port enable flexible data bus width expansion capabilities.

Applications

• High-performance real-time processing systems requiring concurrent data access
• Industrial equipment utilizing 32-bit microcontroller architectures
• Network communication devices needing fast buffer storage

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact package type and temperature rating. Confirm RoHS compliance status as older variants may not meet current environmental standards. Check for obsolescence notices or last-time-buy dates directly from Renesas authorized distributors before finalizing procurement plans.

Selection Notes

Select this component when simultaneous read/write operations are required between two independent processors or controllers. Ensure the system design accommodates the 68-pin PLCC footprint and 5V logic levels. Verify that the 90 ns access speed meets the timing requirements of the target application compared to faster or slower alternatives in the series.

Part Context

This part belongs to the 7143SA/LA family of dual-port SRAMs manufactured by Renesas Electronics. These devices utilize CMOS technology to provide high-speed non-volatile-like performance with true dual-port functionality. The family is designed for applications demanding full-speed, error-free operation in wider memory systems without additional discrete logic.

Replacement Considerations

Official substitutes include parts from the same 7143SA series with different access times, such as the 7143SA55J or 7143SA25G, provided they share the identical 68-PLCC package and pinout configuration. Cross-reference datasheets to ensure functional compatibility regarding voltage ranges and control signals.