The CY15V104QN-50BFXIT is a 4-Mb EXCELON™ LP Ferroelectric RAM (F-RAM) with a 512K × 8 SPI interface, offering 10^15 read/write cycles and 151-year data retention at 60°C. Operating from 1.71 V to 1.89 V across –40°C to +85°C, it supports up to 50 MHz SPI clock, advanced write protection, a 256-byte special sector, and ultra-low power. The 8-pin UFLGA package suits industrial control, data logging, and applications needing fast, reliable nonvolatile memory.