The S25FL128LDPMFI000 is a 128 Mb (16 MB) serial NOR flash memory with SPI multi-I/O interface, supporting single, dual, and quad modes including DDR and QPI. It operates from 2.7 V to 3.6 V across industrial and automotive temperature ranges up to 125°C, offering 100,000 program/erase cycles and 20-year data retention. Advanced security features include four 256-byte security regions, individual block lock, pointer region protection, and password access.