The CY15B108QI-20BFXI is an 8-Mbit EXCELON™ LP ferroelectric RAM (F-RAM) organized as 1024K × 8, delivering virtually unlimited endurance (10^15 read/write cycles) and 151-year data retention. Operating from 1.8 V to 3.6 V over -40°C to +85°C, it features a high-speed SPI interface up to 20 MHz, instant non-volatile writes at bus speed, advanced write protection, unique device ID, and a 256-byte special sector.