7025S35G

Memory IC Overview

The Renesas Electronics Corporation 7025S35G 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 35 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The device supports simultaneous independent reads and writes from either port. It is housed in an 84-pin plastic leaded chip carrier (PLCC) or pin grid array (PGA) package designed for surface mount or through-hole installation.

Memory IC Feature Summary

• True dual-ported architecture enabling simultaneous independent read and write operations from both ports without conflict
• Automatic power-down mode controlled by Chip Enable signals to minimize standby power consumption
• Integrated hardware support for semaphore signaling and interrupt flags to facilitate port arbitration
• TTL-compatible inputs and outputs allowing direct interfacing with standard logic families

Memory IC Applications

• Stand-alone 128K-bit dual-port memory systems
• Master/Slave dual-port RAM configurations for 32-bit or wider data bus expansion
• Battery-backed memory applications requiring low-power retention modes
• Industrial control systems requiring asynchronous data buffering between processors

Memory IC Procurement Notes

Verify the specific package variant, as the base part number may correspond to different physical footprints such as PLCC or PGA depending on the suffix. Confirm that the required operating temperature range matches the commercial grade specifications, as industrial variants exist under different designations. Ensure compatibility with existing board layouts regarding pin assignments and mechanical dimensions before finalizing procurement decisions.

Memory IC Selection Notes

Select this component when simultaneous bidirectional data transfer is required between two independent masters. The 35ns access speed suits moderate-frequency asynchronous interfaces. Consider the 84-pin package constraints for PCB real estate. Evaluate power requirements against the automatic power-down capabilities if battery backup is necessary. Verify that the single 5V supply aligns with the system's voltage rails.

Memory IC Part Context

The 7025 series represents a family of high-speed dual-port SRAMs designed for flexible memory architectures. This specific model belongs to the S35 subset, indicating the 35ns speed grade. The series supports various package options including PGA, PLCC, and TQFP to accommodate different mounting needs. It serves as a foundational component for systems requiring shared memory resources without complex software synchronization protocols.

Memory IC Replacement Considerations

The 7025L17G is listed as a potential upgrade alternative. Verify electrical compatibility and pinout correspondence before substitution. Note that newer generations may offer improved speed grades or RoHS compliance status.