7054S45PRFI

Memory IC Overview

The 7054S45PRFI is a high-speed 32Kb (4K x 8) FourPort Static RAM manufactured by Renesas Electronics Corporation. It features four independent asynchronous ports with separate control, address, and I/O pins, allowing simultaneous access to the same memory locations without on-chip hardware arbitration. The device operates on a single 5V power supply and supports battery backup for data retention down to 2V. It is designed for systems requiring multiple concurrent accesses to common memory resources.

Memory IC Feature Summary

• True FourPort memory cells enable simultaneous read/write access to identical memory locations from all ports.
• Fully asynchronous operation allows independent timing control for each of the four ports.
• Automatic power-down feature controlled by chip enable signals reduces standby power consumption.
• Supports battery backup operation ensuring data retention at low voltage levels.

Memory IC Applications

• Systems requiring multiple processors or controllers to access shared memory simultaneously
• High-speed data buffering where concurrent port access is critical
• Industrial control systems needing reliable asynchronous memory interfaces

Memory IC Procurement Notes

Verify component authenticity through authorized distributors as this part may be obsolete. Confirm package integrity and lead condition upon receipt. Check for RoHS compliance documentation if required for specific regulatory standards. Ensure proper ESD handling procedures are followed during installation due to the sensitivity of static RAM components.

Memory IC Selection Notes

Select this component when multiple independent asynchronous access paths to a small block of static RAM are required. It is suitable for applications where hardware port arbitration is handled externally or not needed. Consider the 128-pin TQFP package constraints and thermal requirements for industrial temperature range variants if operating in extreme environments.

Memory IC Part Context

The 7054 series belongs to Renesas' portfolio of high-speed static random-access memory devices. These parts are designed for embedded systems and specialized computing applications where multi-port memory access eliminates bottlenecks associated with single-port architectures. The FourPort technology distinguishes these ICs from standard SRAMs by providing true parallel access capabilities.

Memory IC Replacement Considerations

Check for direct pin-compatible substitutes within the 7054L or 7054S families. Verify that any replacement maintains the 4K x 8 density and four-port architecture. Ensure the alternative supports the same 5V supply voltage and asynchronous interface timing characteristics.