The CY15B108QN-50BKXQT is an 8-Mbit EXCELON™ LP F-RAM with a high-speed SPI interface, organized as 1024K × 8 and supporting up to 50 MHz operation. It operates from 1.8 V to 3.6 V across -40°C to +105°C, offering virtually unlimited endurance with 10¹⁴ read/write cycles and up to 151 years data retention. Features include hardware and software write protection, a dedicated 256-byte special sector, unique device and serial number identification, and low power consumption.