7025S25PFI8

Memory IC Overview

The Renesas Electronics Corporation 7025S25PFI8 is a dual-port static random-access memory (SRAM) device with a storage capacity of 128 kbit, organized as 8K x 16. It features asynchronous parallel interface operation with a maximum access time of 25 ns. The component operates on a single 5V power supply within a voltage range of 4.5 V to 5.5 V. It supports simultaneous independent reads and writes from two separate ports. The device is housed in a 100-pin Thin Quad Flatpack (TQFP) package measuring 14x14 mm. It is rated for industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• True dual-ported architecture enabling simultaneous independent read and write operations from both ports without conflict.
• On-chip hardware support for semaphore signaling and port arbitration logic to manage data integrity between ports.
• Separate upper-byte and lower-byte control lines designed for multiplexed bus compatibility.
• Master/Slave select capability allows cascading multiple devices to expand data bus width to 32 bits or more.

Memory IC Applications

• High-speed data buffering in telecommunications equipment requiring low-latency access.
• Network switch and router architectures utilizing dual-port memory for packet processing.
• Industrial control systems operating within extended temperature environments.
• Embedded systems requiring battery backup capabilities for data retention.

Memory IC Procurement Notes

Verify the specific suffix 'PF' indicates lead finish type and 'I' denotes industrial temperature grade against official datasheets. Confirm RoHS compliance status as legacy SnPb versions may be End-of-Life. Check current availability as this series has faced discontinuation notices. Ensure ECAD models match the 100-TQFP footprint dimensions precisely before integration into design files.

Memory IC Selection Notes

Select this component when true simultaneous bidirectional access is required compared to single-port alternatives. Consider the 25 ns speed grade relative to system clock requirements. Evaluate the 100-pin TQFP package constraints for PCB layout density. Verify that the 5V logic levels align with the host processor I/O standards without additional level shifting circuitry.

Memory IC Part Context

This part belongs to the IDT 7025 family of high-speed dual-port SRAMs acquired by Renesas. The family includes variants with different access speeds such as 15ns, 20ns, 35ns, and 55ns. The 'S' designation typically refers to standard power consumption, while 'L' indicates low-power options. These devices are widely used in legacy and specialized industrial applications requiring robust hardware-based synchronization.

Memory IC Replacement Considerations

Direct pin-compatible replacements include other members of the 7025 family with matching access times, such as the 7025S25PFGI. Verify if the lead-free variant 7025S25PFGI meets environmental requirements. Cross-reference with Renesas official substitution lists for discontinued SnPb parts to ensure functional equivalence in timing and electrical characteristics.