The CY15V104QN-50SXIT is a 4-Mb EXCELON™ LP ferroelectric RAM (F-RAM) organized as 512K × 8, offering virtually unlimited endurance of 10^15 read/write cycles and 151-year data retention. Operating from 1.71 V to 1.89 V over –40°C to +85°C, it supports SPI up to 50 MHz and instant non-volatile writes at bus speed. Advanced write protection, low active current, and 8-pin SOIC packaging make it ideal for industrial and data logging applications.