The CY15B004J-SXAT is a 4-Kbit (512 × 8) automotive-grade serial F-RAM with an I2C interface, supporting 100 trillion (1×10¹⁴) read/write cycles and 151-year data retention. Operating from 2.7 V to 3.65 V across –40°C to +85°C, it features NoDelay™ writes for instant data storage at bus speed, active current up to 100 μA at 100 kHz, and standby current as low as 3 μA.