The CY15B004Q-SXE is a 4-Kbit (512 × 8) automotive-grade serial F-RAM with an industry-standard SPI interface, supporting up to 16 MHz clock, 3.0 V to 3.6 V operation, and 10 trillion (10¹³) read/write cycles. It offers 121-year data retention at 85°C, NoDelay™ writes, low active (200 μA at 1 MHz) and standby (6 μA at 85°C) currents, and robust hardware/software write protection.