The CY15B104QN-50SXIT is a 4-Mb EXCELON™ LP ferroelectric RAM (F-RAM) offering nonvolatile memory with virtually unlimited endurance and 151-year data retention. It operates from 1.8 V to 3.6 V across –40°C to +85°C, supports fast SPI interface up to 50 MHz for immediate writes, and features advanced write protection, unique device ID, and low-power modes. The 8-pin SOIC package is RoHS compliant for robust performance in industrial and control applications.