7143SA20J

Overview

The Renesas Electronics Corporation 7143SA20J 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 word. The component supports parallel interface communication with a maximum access time of 20 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The device is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount installation. It functions within an industrial temperature range from 0°C to +70°C.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to the same memory location from two separate ports without conflict.
• Integrated on-chip port arbitration logic manages data bus contention automatically, eliminating the need for external discrete control circuitry.
• Supports versatile write control allowing separate management of byte lanes, facilitating expansion to wider data buses in master/slave configurations.

Applications

• High-performance real-time engine systems requiring concurrent data processing and storage access.
• Industrial equipment controllers utilizing asynchronous parallel memory interfaces.
• Master/Slave dual-port RAM configurations for expanding system data bus width beyond 16 bits.

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance requirements as original variants may not meet current environmental standards. Validate package integrity upon receipt, as moisture sensitivity levels require proper handling. Cross-reference datasheet revisions to ensure pinout and electrical specifications match design intent before integration.

Selection Notes

Select this component when simultaneous bidirectional memory access is critical for system latency reduction. Ensure the design accommodates the 68-pin PLCC footprint and surface-mount assembly constraints. Verify that the operating environment remains within the specified commercial temperature limits. Consider power consumption characteristics relative to the system's thermal management capabilities during continuous operation.

Part Context

This part belongs to the Renesas 7143 series of high-speed dual-port SRAMs. It shares architectural similarities with the 7133 and 7143LA variants but differs in organization and package type. The series utilizes IDT Master/Slave Dual-Port RAM technology for error-free operation in 32-bit or wider memory systems. It serves as a legacy solution for applications requiring deterministic access timing without complex arbitration logic.

Replacement Considerations

• IDT7143SA20J