AT25SF161B-SHD-B

Memory IC Overview

The AT25SF161B-SHD-B is a 16 Mbit SPI NOR flash memory component manufactured by Renesas Electronics. It operates within a voltage range of 2.5 V to 3.6 V and supports clock frequencies up to 108 MHz. The device features a 2 M x 8 organization and is housed in an 8-pin SOIC-W package. It supports Single, Dual, and Quad SPI interfaces with XiP capability.

Memory IC Feature Summary

• Supports Single, Dual, and Quad I/O SPI operations for flexible data transfer rates
• Includes three security register pages for unique device serialization and key storage
• Features standard block architecture optimized for code shadowing applications

Memory IC Applications

• Code shadowing from Flash to embedded or external RAM
• Data storage in 3V systems
• System-level Electronic Serial Number (ESN) storage

Memory IC Procurement Notes

Verify the specific suffix 'SHD-B' against official Renesas documentation to confirm package dimensions and tape/reel specifications. Ensure compatibility with existing board layouts regarding the SOIC-W footprint. Confirm RoHS compliance status through the manufacturer's current datasheet before finalizing procurement orders.

Memory IC Selection Notes

Select this component for designs requiring 16 Mbit capacity with high-speed SPI access up to 108 MHz. It is suitable for applications needing secure data storage via dedicated security registers. Consider the 2.5 V minimum operating voltage when designing power supply rails for the target system.

Memory IC Part Context

This part belongs to the AT25SF161B series of standard class SPI NOR flash memories. The series is designed for 3V systems where program code execution relies on shadowing from non-volatile memory to RAM. It shares architectural similarities with other members like the AT25SF321B but offers lower density.

Memory IC Replacement Considerations

Direct substitutes include other variants within the AT25SF161B family such as AT25SF161B-MHB-T or AT25SF161B-DWF, provided pinout and command set compatibility are verified.