The CY15B004Q-SXAT is a 4-Kbit (512 × 8) automotive-grade serial F-RAM memory, offering nonvolatile storage with virtually unlimited endurance (1014 read/write cycles) and 151-year data retention at 65°C. Operating from 2.7 V to 3.6 V across –40°C to +85°C, it supports high-speed SPI up to 20 MHz in modes 0 and 3. NoDelay™ writes and low active current (200 μA at 1 MHz) make it ideal for frequent-write automotive and industrial applications.