7143LA20G

Overview

The Renesas Electronics Corporation 7143LA20G is a high-speed, asynchronous dual-port static random-access memory (SRAM) with a storage capacity of 32 kilobits. The memory is organized as 2K words by 16 bits and features a parallel interface. It supports simultaneous independent access to the same memory location from both ports without conflict. The device operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. It offers a maximum access time of 20 nanoseconds and functions within an industrial temperature range of 0°C to 70°C. The component is housed in a 68-pin plastic ball grid array package.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to shared memory locations from two separate ports.
• Integrated on-chip port arbitration logic manages bus conflicts automatically, eliminating the need for external discrete control circuitry.
• Supports versatile write control allowing separate management of lower and upper bytes for each port to expand data bus width.
• Fully asynchronous operation from either port ensures flexible timing requirements and simplified system integration.

Applications

• High-speed data buffering in telecommunications equipment requiring low-latency memory access.
• Industrial automation systems utilizing EtherCAT or similar deterministic protocols for slave device connectivity.
• Semiconductor manufacturing equipment requiring reliable, error-free memory operations under strict timing constraints.
• Motor driving devices implementing CiA402 drive profiles where fast data exchange between controllers is critical.

Procurement Notes

Verify the specific package variant, as the 7143 series includes PGA, PLCC, and TQFP options. Confirm RoHS compliance status and moisture sensitivity level prior to ordering. Check for end-of-life notifications or last-time buy notices, as older SRAM components may have limited availability. Ensure the selected part matches the required pinout and thermal specifications for the target application environment.

Selection Notes

Select this component when a system requires true dual-port memory capabilities for concurrent read/write operations without external arbitration logic. It is suitable for applications needing 32Kb capacity with 16-bit word width and 20ns speed. Consider the 68-pin BGA package for surface-mount assembly needs. Evaluate alternative packages like PLCC if through-hole mounting is preferred, ensuring the electrical characteristics remain consistent across variants.

Part Context

The 7143LA20G belongs to the IDT/Renesas 7143 family of high-speed dual-port SRAMs. This family utilizes a Master/Slave approach to facilitate 32-bit or wider memory systems without additional discrete logic. The LA suffix typically denotes the commercial temperature grade and specific package type within the broader 7143 product line, which also includes military-grade and different speed variants.

Replacement Considerations

Direct replacements include other 7143 series parts such as the 7143SA20G or 7143LA20JG8, provided the package and speed match. Verify pin compatibility and electrical specifications before substituting. Cross-reference with IDT datasheets for equivalent performance metrics.