70T651S12BFI

Memory IC Overview

The Renesas Electronics Corporation 70T651S12BFI is a high-speed asynchronous dual-port static random-access memory (SRAM) with a storage capacity of 9 Mbit, organized as 256K x 36. It operates within a supply voltage range of 2.4V to 2.6V and features a 12 ns access time. The device utilizes a parallel interface and is housed in a 208-CABGA package measuring 15x15 mm. It supports an industrial operating temperature range from -40°C to +85°C.

Memory IC Feature Summary

• Dual-port architecture enables simultaneous independent access to the same memory location by two separate ports.
• Includes on-chip hardware support for semaphore signaling and port arbitration logic between ports.
• Features RapidWrite Mode to simplify high-speed consecutive write cycles.
• Supports depth expansion without external logic when used as a combination Master/Slave Dual-Port RAM.

Memory IC Applications

• Stand-alone dual-port memory systems
• Master/Slave configurations for 72-bit or wider word systems
• High-speed data buffering applications

Memory IC Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance requirements as the part may not meet current standards. Check moisture sensitivity level handling procedures before assembly. Validate package integrity upon receipt. Ensure design-in compatibility with existing system interfaces.

Memory IC Selection Notes

Select this component for applications requiring simultaneous bidirectional data access without external arbitration logic. Suitable for systems needing rapid consecutive writes via RapidWrite Mode. Ideal for expanding data bus width to 72 bits or more using cascading Master/Slave configurations. Consider power consumption characteristics and thermal management for industrial temperature ranges.

Memory IC Part Context

The 70T651 series belongs to Renesas' high-speed asynchronous dual-port SRAM family. This specific model provides 9 Mbit capacity with 36-bit word width. It is designed for standalone use or cascaded operation. The CABGA package offers compact surface-mount integration. The series supports LVTTL-compatible I/O signals.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: IDT70T651S12BFI. Verify pinout and electrical specifications match exactly. Check for any packaging differences that may affect mechanical fit. Confirm functional equivalence in dual-port arbitration and semaphore support.