7005S35J8/2594

Overview

The Renesas Electronics Corporation 7005S35J8/2594 is a high-speed 64K-bit (8K x 8) dual-port static random-access memory (SRAM). It features asynchronous parallel interfaces for both ports, enabling independent and simultaneous access to the same memory location. The component operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. It provides a maximum access time of 35ns and supports industrial temperature ranges from 0°C to 70°C. The device is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package with J-leads.

Feature Summary

• True dual-ported memory architecture allowing simultaneous reads of identical memory locations by two independent processors.
• Integrated hardware support for semaphore signaling and port arbitration logic to manage bus conflicts between master and slave ports.
• Asynchronous operation capability from either port without requiring clock synchronization.
• Automatic power-down feature controlled by chip enable signals to minimize standby power consumption.

Applications

• Stand-alone 64K-bit dual-port RAM systems
• Master/slave dual-port configurations for 16-bit or wider data bus expansion
• Battery-backed memory applications requiring 2V data retention

Procurement Notes

Verify the specific suffix /2594 against official Renesas documentation, as standard datasheets typically list 7005S35J8. Confirm RoHS compliance status, as this series may not meet current environmental standards. Check for end-of-life notices or discontinuance alerts prior to procurement planning.

Selection Notes

Select this component when true dual-port functionality with independent asynchronous access is required. Ensure the system design accommodates the 68-pin PLCC footprint and 5V logic levels. Consider alternative packages like TQFP if surface mount density differs from leaded requirements.

Part Context

This part belongs to the 7005 family of high-speed dual-port SRAMs manufactured by Renesas Electronics. The family offers various speed grades and packaging options, including PGA, PLCC, and TQFP, to suit different board layout and performance needs.

Replacement Considerations

Direct substitutes include other variants within the 7005 series such as the 7005S25J8 for faster access times or the 7005L35G for through-hole PGA packaging. Verify pin compatibility and electrical specifications before substitution.