7143LA20JG

Overview

The Renesas Electronics Corporation 7143LA20JG is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It features a storage capacity of 32 kilobits organized as 2K words by 8 bits per port, providing independent read/write access for two masters. The component operates with a standard single 5V power supply within a voltage range of 4.5V to 5.5V and supports a maximum access time of 20 nanoseconds. It is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount technology applications.

Feature Summary

• True dual-ported architecture enabling simultaneous independent access to the same memory location from both ports without conflict.
• Integrated on-chip port arbitration logic manages bus contention automatically, eliminating the need for external discrete control circuitry.
• Supports versatile write control allowing separate byte enables for lower and upper bytes, facilitating expansion to wider data buses.

Applications

• High-performance real-time engine systems requiring concurrent data processing
• Master/Slave dual-port RAM configurations in 32-bit or wider memory architectures
• Industrial equipment controllers needing fast, error-free shared memory access

Procurement Notes

Verify component authenticity through authorized distributors due to potential availability constraints. Confirm RoHS compliance status and moisture sensitivity level prior to soldering. Check for specific packaging variations such as tube versus reel formats. Ensure the supplier provides valid traceability documentation. Validate that the received part matches the exact 7143LA20JG designation to avoid functional mismatches in critical designs.

Selection Notes

Select this component when simultaneous bidirectional data transfer is required between two processors or controllers. It is suitable for designs needing full-speed operation without external arbitration logic. Consider the 68-pin PLCC package constraints for board layout. Verify that the 5V supply requirement aligns with the system power rails. Evaluate thermal performance within the specified industrial temperature range during integration.

Part Context

This device belongs to the 7143 series of high-speed dual-port SRAMs manufactured by Renesas Electronics. It utilizes the MASTER/SLAVE Dual-Port RAM approach to ensure reliable data integrity in complex system applications. The series is designed to replace older discrete logic solutions, offering a compact and efficient memory management alternative for embedded systems.

Replacement Considerations

Check for direct pin-compatible substitutes within the same 7143 family. Verify if alternative packages like ceramic PGA or TQFP are available for different mounting needs. Ensure any replacement maintains the 20ns access time and 32Kb density specifications.