70T651S10BFGI

Memory IC Overview

The 70T651S10BFGI is a high-speed asynchronous dual-port static random-access memory (SRAM) manufactured by Renesas Electronics. It features a storage organization of 256K x 36 bits, providing a total capacity of 9 Mbit. The device supports parallel interface operation with a maximum access time of 10 ns. It operates on a single 2.5V core supply voltage and accepts selectable 3.3V or 2.5V I/O power supplies. The component is housed in a 208-pin CABGA package measuring 15x15 mm and is rated for an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Dual-port architecture enables simultaneous independent access to the same memory location from two separate ports without external arbitration logic.
• Integrated hardware semaphore signaling and interrupt flags facilitate efficient port contention management and synchronization between accessing agents.
• RapidWrite mode optimizes consecutive write cycles, while sleep mode inputs on both ports allow for significant standby power reduction.
• Supports depth expansion via dual chip enables and width expansion to 72 bits or more through master/slave cascading configurations.

Memory IC Applications

• High-performance networking equipment requiring low-latency packet buffering
• Industrial automation systems needing reliable real-time data exchange
• Telecommunications infrastructure utilizing asynchronous data transfer protocols

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature grade (-40°C to +85°C) as documented in official specifications. Confirm the 208-CABGA package dimensions match design constraints. Check current production status, as related variants may have end-of-life notices. Ensure voltage requirements align with system 2.5V core and 3.3V/2.5V I/O capabilities before integration.

Memory IC Selection Notes

Select this component when simultaneous bidirectional data access is required without complex external control logic. The 256K x 36 organization suits applications needing wide data buses. Verify compatibility with LVTTL signal levels if using 3.3V I/O. Consider the 10 ns access speed against system timing requirements. The industrial temperature rating makes it suitable for harsh environments compared to commercial grade alternatives.

Memory IC Part Context

This part belongs to the 70T651 family of asynchronous dual-port SRAMs. It shares architectural similarities with other members like the 70T651S10BFG but differs in packaging and temperature rating. The family emphasizes ease of use through built-in arbitration and semaphore support, reducing design complexity for multi-processor systems.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Related variants such as 70T651S10BFG exist but differ in temperature range and packaging. Verify functional equivalence carefully before substitution.