7005S35JI

Overview

The Renesas Electronics Corporation 7005S35JI is a high-speed, asynchronous dual-port static random-access memory (SRAM) with a density of 64 Kbit. It features an 8K x 8 organization and supports parallel interface communication. The device operates within a supply voltage range of 4.5 V to 5.5 V, with a maximum power consumption of 250 mA. It provides a fast access time of 35 ns and functions reliably across an industrial temperature range from 0°C to +70°C. The component is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount technology applications.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent reads and writes by two separate processors.
• On-chip hardware support for semaphore signaling and port arbitration logic to manage data integrity between ports.
• Integrated interrupt flag functionality to signal status changes or bus contention events to connected controllers.
• Automatic low-power standby mode controlled by chip enable inputs to minimize energy consumption during idle periods.

Applications

• High-performance embedded systems requiring concurrent data access from multiple processing units.
• Industrial automation controllers utilizing master-slave dual-port configurations for real-time data exchange.
• Telecommunications equipment needing reliable, high-speed buffering for asynchronous data streams.
• Automotive electronic control units operating within standard industrial temperature environments.

Procurement Notes

Verify the exact suffix designation against official manufacturer documentation, as variations such as J, G, or PFG indicate specific package types like PLCC, PGA, or TQFP. Confirm RoHS compliance status and moisture sensitivity levels prior to integration. Check current lifecycle status, as many variants in this series are discontinued. Ensure sourcing channels provide valid traceability for critical industrial or automotive deployments.

Selection Notes

Select this component when a system requires true dual-port capability with hardware-based arbitration rather than software-managed shared memory. The 35 ns access speed suits moderate-to-high frequency asynchronous interfaces. Consider the 68-pin PLCC package only if the PCB layout supports surface-mount leadless carriers. Evaluate power requirements against the 250 mA maximum specification to ensure adequate thermal management and supply stability.

Part Context

This part belongs to the Renesas 7005 family of dual-port SRAMs, originally developed under IDT branding before corporate acquisition. The family offers various speed grades and package options to accommodate different system timing and form factor constraints. These devices are widely recognized in legacy industrial and telecommunications designs for their robust hardware synchronization features.

Replacement Considerations

Public confirmed substitute part numbers: IDT7005S35J. Verify pinout compatibility and electrical specifications before substitution.