The S25FS256SDSNFI000 is a 256 Mbit (32 MB) SPI NOR Flash based on 65-nm MIRRORBIT™ technology, supporting single, dual, and quad I/O plus DDR read up to 80 MBps. It operates from 1.7 V to 2.0 V and is qualified for automotive AEC-Q100 Grade 1 (-40°C to +125°C) and industrial grades. Features include a 256/512-byte program buffer, flexible sector options, 100,000 program/erase cycles, and 20-year data retention. Ideal for code storage, XIP, and embedded applications.