The S28HS256TGZBHM813 is a 256 Mb SEMPER™ NOR flash with octal interface, supporting JEDEC xSPI (JESD251) and 1.7 V to 2.0 V operation. It delivers up to 400 MBps DDR read speed, features 45 nm MIRRORBIT™ technology, and flexible sector architecture. Endurance Flex enables high endurance (up to 512,000 cycles) or long retention (25 years). Integrated ECC, CRC, SafeBoot, and advanced sector protection ensure robust data integrity and functional safety.