The S25FL064LABBHA020 is a 64 Mb SPI multi-I/O NOR flash memory using 65-nm floating gate technology and operating from a 2.7 V to 3.6 V supply. It supports SDR up to 108 MHz and DDR up to 54 MHz, with quad read rates up to 54 MBps. Erase options include 4 KB, 32 KB, 64 KB, and chip erase. The device offers 100,000 program-erase cycles and 20-year data retention. Security features include block, region, and password protection.