7025S35JI8

Memory IC Overview

The Renesas Electronics Corporation 7025S35JI8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It provides a storage capacity of 128 kbit, organized as 8K words by 16 bits per word. The component features a parallel interface with a maximum access time of 35 ns. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The device is housed in an 84-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount technology. It supports independent operation from either port and includes hardware support for semaphore signaling.

Memory IC Feature Summary

• True dual-ported architecture allowing simultaneous independent reads and writes from two separate ports
• On-chip hardware support for semaphore signaling and interrupt flags to manage data integrity between ports
• Automatic power-down feature controlled by chip enable signals to minimize standby power consumption
• TTL-compatible inputs and outputs ensuring compatibility with standard logic families

Memory IC Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded systems
• Data acquisition systems requiring rapid concurrent access
• Industrial control applications needing reliable volatile storage

Memory IC Procurement Notes

Verify the exact suffix configuration against official Renesas documentation, as variations such as J8 or JI8 may indicate specific packaging or testing standards. Confirm RoHS compliance status, as older variants often lack lead-free certification. Check current lifecycle status, as this model may be discontinued or subject to production changes. Ensure ESD handling protocols are followed during installation due to moisture sensitivity classification.

Memory IC Selection Notes

Select this component when a system requires true dual-port capability with independent address and data buses for both ports. It is suitable for designs needing fast 35 ns access times without synchronous clock constraints. Consider the 84-PLCC package if board space allows for larger footprints compared to QFP options. Evaluate power requirements against the 5V supply specification and ensure thermal management aligns with the commercial temperature range.

Memory IC Part Context

The 7025S35JI8 belongs to the Renesas 7025 family of dual-port SRAMs. This series is designed for applications requiring high-speed data sharing between two processors or microcontrollers. The family offers various access speeds and package options, including PGA, PLCC, and TQFP configurations. The 7025 series is widely used in networking and industrial automation where deterministic data exchange is critical.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers include 7025L20PFGI8 and 7025L15PFG8. These alternatives offer similar dual-port functionality but may differ in access speed, package type, or operating temperature range. Verify pinout compatibility and electrical specifications before substitution.