7054L45PRFI8

Memory IC Overview

The 7054L45PRFI8 is a high-speed, 32Kb (4K x 8) FourPort Static RAM manufactured by Renesas Electronics Corporation. It features four independent ports with separate control, address, and I/O pins, allowing for simultaneous asynchronous access to any memory location without on-chip hardware arbitration. The device operates within a voltage range of 4.5V to 5.5V and supports battery backup operation with data retention down to 2V. It is housed in a 128-pin TQFP package and is designed for industrial temperature applications ranging from -40°C to +85°C.

Memory IC Feature Summary

• True FourPort memory cells enable simultaneous access to the same memory locations across all ports.
• Fully asynchronous operation allows independent reads or writes via separate control, address, and I/O pins for each port.
• Automatic power-down feature controlled by Chip Enable (CE) permits low-power standby mode.
• Supports battery backup operation with 2V data retention capabilities.

Memory IC Applications

• Systems requiring multiple processors to access common RAM simultaneously.
• High-speed data buffering where concurrent read/write operations are critical.
• Industrial control systems operating in extended temperature environments.
• Battery-backed memory systems requiring data retention during power loss.

Memory IC Procurement Notes

Verify component authenticity through authorized distributors due to potential obsolescence. Confirm RoHS compliance status as older variants may not meet current environmental standards. Check for lead-free packaging options if required by assembly processes. Validate that the 128-pin TQFP footprint matches existing PCB designs. Ensure supply chain stability given the component's mature lifecycle stage.

Memory IC Selection Notes

Select this component when four independent asynchronous ports are necessary for shared memory access. Consider the 45ns access time against system timing requirements. Evaluate the 128-pin TQFP package size for board space constraints. Verify compatibility with 5V logic levels and 4.5V-5.5V supply voltages. Assess thermal management needs for industrial temperature ranges.

Memory IC Part Context

The 7054 series represents Renesas' high-performance multi-port SRAM family designed for complex multiprocessing architectures. This specific model extends the functionality of earlier single or dual-port devices by providing four distinct interfaces. It serves as a bridge between standard SRAMs and more complex FIFOs, offering flexibility for custom arbitration schemes in embedded systems.

Memory IC Replacement Considerations

IDT7054L45PRFI8 is a confirmed equivalent part number from Integrated Device Technology (IDT), now part of Renesas. Verify pinout and electrical specifications match exactly before substitution. Ensure package dimensions and thermal characteristics are compatible with existing footprints.