The S25FL064LABBHI020 is a 64 Mb SPI NOR flash memory using 65-nm floating gate technology, supporting up to 108 MHz SDR and 54 MHz DDR. It offers flexible read, program, and erase options including 256-byte page programming and uniform 4 KB sector, 32 KB half block, and 64 KB block erase. Operating from 2.7 V to 3.6 V, it meets automotive AEC-Q100 Grade 1 (-40°C to +125°C). Typical uses include code shadowing, XIP, and secure storage in automotive and embedded systems.