The S25FL256SAGBHID10 is a 256 Mb automotive-grade SPI NOR flash memory using 65-nm MIRRORBIT™ technology and Eclipse architecture. It supports SPI Multi-I/O (x1, x2, x4), up to 133 MHz SDR and 80 MHz DDR, with hybrid 4-KB/64-KB or uniform 256-KB sectors. Operating from 2.7 V to 3.6 V core and 1.65 V to 3.6 V I/O, it offers 100,000 program-erase cycles, 20-year data retention, and AEC-Q100 Grade 2 qualification. Typical uses include automotive ECUs and code shadowing.