7025S55PFI8

Memory IC Overview

The Renesas Electronics Corporation 7025S55PFI8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It provides a storage capacity of 128 kilobits organized as 8K words by 16 bits. The component features parallel interface access with a maximum access time of 55 nanoseconds. It operates on a single 4.5V to 5.5V power supply and supports surface-mount installation in a 100-pin Thin Quad Flat Package (TQFP) measuring 14x14 mm. The device is designed for industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• True dual-ported architecture enabling simultaneous independent read/write operations from either port without conflict.
• On-chip hardware support for semaphore signaling and interrupt flags to facilitate efficient data exchange between processors.
• Automatic power-down mode controlled by Chip Enable signals to minimize standby power consumption during idle periods.

Memory IC Applications

• High-speed data buffering in telecommunications equipment requiring low-latency packet handling.
• Master/slave dual-port configurations in 32-bit or wider embedded processing systems.
• Real-time control applications in industrial automation where deterministic data sharing is critical.

Memory IC Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm package marking and date codes against official Renesas documentation. Ensure compliance with RoHS directives if required by the target application, noting this specific variant may not meet current standards. Validate pin compatibility with existing PCB footprints before procurement.

Memory IC Selection Notes

Select this component when true dual-port independence is required for concurrent processor access. Consider the 55 ns access speed relative to system clock requirements. Evaluate the 100-TQFP package constraints for thermal management and board space. Compare against newer series like the 7025L family for improved performance or regulatory compliance if available.

Memory IC Part Context

The 7025S55PFI8 belongs to the Renesas 7025 series of asynchronous dual-port SRAMs. This series is engineered for standalone or master/slave operation in complex digital systems. It replaces earlier generations with enhanced arbitration logic and lower power characteristics while maintaining TTL-compatible I/O levels for broad interoperability.

Memory IC Replacement Considerations

The 7025L20PFGI8 is listed as an upgrade replacement. Verify electrical parameter compatibility, specifically access times and voltage tolerances. Check for package dimension differences between TQFP variants. Assess lead availability and lifecycle status changes for long-term production viability.