7005S25PFI8

Overview

The Renesas Electronics Corporation 7005S25PFI8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) with a density of 64 kilobits. The device features an 8K x 8 organization and supports simultaneous independent access to the same memory location from two separate ports. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The component provides a maximum access time of 25 nanoseconds and is housed in a 64-pin Thin Quad Flat Package (TQFP) with a 14.0mm x 14.0mm footprint.

Feature Summary

• True dual-ported memory architecture enabling simultaneous reads of identical memory locations without conflict.
• Integrated hardware support for semaphore signaling and port arbitration logic between master and slave ports.
• Automatic power-down functionality controlled by chip enable signals to achieve low standby power consumption.
• On-chip interrupt flag generation to facilitate efficient communication and status monitoring between connected processors.

Applications

• Stand-alone 64K-bit dual-port memory systems requiring concurrent data access.
• Master/Slave dual-port configurations for expanding data bus widths to 16 bits or more in complex architectures.
• Battery-backed systems utilizing the device's 2V data retention capability for critical information preservation.

Procurement Notes

Verify the specific suffix against official documentation, as package variations exist within the series. Confirm RoHS compliance status, as lead-free availability varies by manufacturing batch and date code. Check for End-of-Life notices, as this component family may be discontinued or subject to replacement by newer series variants. Ensure moisture sensitivity level handling protocols are followed during assembly.

Selection Notes

Select this component when simultaneous bidirectional access to shared memory is required without external arbitration circuitry. Consider the 25ns access speed for applications demanding moderate-to-high throughput. Evaluate the TQFP package dimensions for PCB layout constraints. Verify that the 5V TTL-compatible I/O levels match the interface requirements of the host processors.

Part Context

The 7005 series represents a line of high-performance dual-port SRAMs designed for versatile integration in embedded systems. This specific model utilizes asynchronous operation, allowing flexible timing control for both ports. The device is part of a broader portfolio offering various access speeds and package options to suit different industrial and commercial temperature ranges.

Replacement Considerations

Official upgrade alternatives include the 7005L20PFGI and 7005L20PFGI8, which offer faster access times while maintaining similar functional characteristics. Verify pin compatibility and electrical specifications before substitution.