S28HL256TFPBHM010 is a 256 Mbit SEMPER™ NOR flash (HL-T) for automotive ECUs, using a JEDEC JESD251 octal interface at 166 MHz SDR or 166 MHz DDR for up to 333 MByte/s bandwidth. It operates from 2.7 V to 3.6 V over -40 to 125°C, is ISO 26262-compliant, and integrates ECC (SECDED), SafeBoot, AutoBoot, interface CRC, and data integrity CRC for robust code and data storage in safety-critical designs.