The CY15V104QSN-108SXIT is a 4-Mbit EXCELON™ Ultra ferroelectric RAM (F-RAM) with 512K × 8 organization, supporting quad SPI up to 108 MHz SDR and 54 MHz DDR. Operating from 1.71 V to 1.89 V over -40°C to +85°C, it delivers virtually unlimited endurance of 100 trillion cycles and 151-year data retention. Features include instant non-volatile writes, advanced ECC and CRC, and low standby current of 110 µA, ideal for frequent or rapid-write industrial applications.