The S25FL256LAGNFB010 is a 256 Mb (32 MB) flash memory device built on 65-nm floating gate technology and supporting SPI multi-I/O interfaces. It operates from 2.7 V to 3.6 V across -40°C to +125°C, meeting AEC-Q100 automotive standards. Maximum read speed is 66 MBps (Quad DDR, 66 MHz), with a 256-byte page programming buffer and uniform erase sizes of 4 KB, 32 KB, or 64 KB. Security features include four 256-byte regions and individual block protection.