The CY15B256Q-SXA is a 256-Kbit (32K × 8) automotive serial F-RAM with SPI interface, providing nonvolatile memory with 100 trillion (1e14) read/write cycles and 151-year data retention at 65°C. It operates from 2.0 V to 3.6 V, supports up to 40 MHz clock, and features low active (2.5 mA), standby (150 μA), and sleep (8 μA) currents. The device offers advanced write protection, AEC-Q100 Automotive-A qualification, and is ideal for applications requiring frequent, fast writes.