The CY15B102QSN-108SXI is a 2-Mbit EXCELON Ultra F-RAM with quad SPI interface, organized as 256K × 8 and supporting up to 108 MHz clock. Operating from 1.8 V to 3.6 V across –40°C to +85°C, it delivers instant nonvolatile writes, 10^14 endurance cycles, and 151-year data retention at 65°C. Features include ECC/CRC for data integrity, hardware and software write protection, and a dedicated 256-byte special sector.