The CY15E004Q-SXET is a 4-Kbit (512 × 8) automotive-grade serial F-RAM with a high-speed SPI interface up to 16 MHz, operating from 4.5 V to 5.5 V across –40°C to +125°C. It delivers 10^13 read/write cycles, 121-year data retention at 85°C, and instant NoDelay™ writes at bus speed.