The CY15B104QN-50BFXIT is a 4-Mb EXCELON™ LP ferroelectric RAM (F-RAM) with high-speed SPI up to 50 MHz and industrial reliability. It offers virtually unlimited endurance of 1015 read/write cycles and 151-year data retention at 60°C. Operating from 1.8 V to 3.6 V across –40°C to +85°C, it features advanced write protection, ultra-low power modes, and unique device identification. Ideal for industrial controls, data logging, and frequent rapid write applications.