The CY15B201QN-50SXE is a 1-Mb automotive-grade ferroelectric RAM (F-RAM) with a 128 K × 8 organization, accessed via a high-speed SPI interface up to 50 MHz. It delivers virtually unlimited endurance of 10 trillion read/write cycles and 121-year data retention, with instant non-volatile writes at bus speed. Operating from 1.8 V to 3.6 V across -40°C to +125°C, it meets AEC-Q100 Grade 1 standards.