70T651S15BF8

Memory IC Overview

The 70T651S15BF8 is a high-speed asynchronous dual-port static random-access memory (SRAM) manufactured by Renesas Electronics Corporation. It features a storage organization of 256K x 36 bits, providing a total capacity of 9 Mbit. The device supports simultaneous independent access from two ports with an access time of 15 ns. It operates within a supply voltage range of 2.4V to 2.6V and is available in a 208-pin CABGA package.

Memory IC Feature Summary

• True dual-port architecture enabling simultaneous reads and writes from separate ports without conflict
• Integrated hardware support for semaphore signaling and port arbitration logic
• Configurable master/slave operation for expanded word-length systems
• On-chip interrupt flag generation for efficient host processor notification

Memory IC Applications

• High-performance telecommunications switching systems
• Network routing and packet processing buffers
• Industrial control systems requiring deterministic data access
• Automotive electronic control units (ECUs)
• Test and measurement equipment

Memory IC Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to the presence of counterfeits in the market. Confirm RoHS compliance status as specific variants may not meet current environmental directives. Check for End-of-Life (EOL) notifications or Product Change Notifications (PCNs) that may affect long-term availability or physical specifications before finalizing procurement plans.

Memory IC Selection Notes

Select this component when simultaneous independent access to shared memory is required without external arbitration logic. Ensure the system design accommodates the 2.4V to 2.6V supply voltage requirements. Verify that the 208-CABGA package footprint matches the PCB layout constraints. Consider thermal management capabilities if operating at the upper limits of the specified temperature range.

Memory IC Part Context

The 70T651 series belongs to Renesas' portfolio of high-speed dual-port SRAMs, originally developed under IDT branding. These devices are designed to replace complex discrete logic solutions in wide-word memory applications. The series offers low power consumption and fast access times suitable for demanding real-time processing environments.

Memory IC Replacement Considerations

Check for direct pin-compatible replacements within the same family, such as different speed grades or voltage variants. Verify functional equivalence regarding semaphore and interrupt logic if substituting with other manufacturers' dual-port SRAMs.