70T651S10BCI8

Memory IC Overview

The 70T651S10BCI8 is a high-speed asynchronous dual-port static RAM with a memory organization of 256K x 36 bits, providing a total capacity of 9 Mbits. It operates with a single 2.5V core supply and supports selectable 3.3V or 2.5V I/O logic levels. The device features a 10 ns access time and is housed in a 256-ball CABGA package measuring 17x17 mm. It includes JTAG functionality and supports industrial temperature ranges.

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 allows for full on-chip port arbitration and interrupt flag management between the two ports.
• RapidWrite mode simplifies high-speed consecutive write cycles, while sleep mode inputs on both ports facilitate low standby power consumption.

Memory IC Applications

• High-performance networking equipment requiring parallel data processing
• Telecommunications systems utilizing interleaved I/O configurations
• Industrial control systems needing robust dual-port memory interfaces

Memory IC Procurement Notes

Verify component authenticity through authorized Renesas distributors due to potential counterfeit risks. Confirm RoHS compliance status as legacy variants may differ. Check moisture sensitivity level (MSL 3) requirements for proper storage and handling before soldering. Ensure voltage levels match system design specifications.

Memory IC Selection Notes

Select this component for applications requiring simultaneous read/write operations across a 36-bit wide bus. Compare against the 70T653M series if larger 18 Mbit capacity is needed. Verify that the 256-ball CABGA package fits the PCB footprint constraints. Consider the 10 ns speed grade relative to system clock requirements.

Memory IC Part Context

This part belongs to the 70T651 family of asynchronous dual-port SRAMs manufactured by Renesas Electronics. It serves as a direct successor to IDT-branded equivalents, maintaining pin compatibility and functional specifications. The family is designed for standalone use or cascaded master/slave configurations to expand data bus width.

Memory IC Replacement Considerations

The 70T651S10BF is a similar variant but uses a 208-pin package instead of the 256-ball BGA. Verify package dimensions and pinout compatibility before substitution. Other family members like the 70T653M offer different densities and should be evaluated based on specific memory size requirements.