The CY15B004Q-SXA is a 4-Kbit automotive-grade serial F-RAM providing nonvolatile memory with high endurance and fast write performance. It operates from 2.7 V to 3.6 V across -40°C to +85°C, supporting up to 20 MHz SPI bus speeds. NoDelay™ writes occur at bus speed with 100 trillion read/write cycles and 151-year data retention at 65°C. Hardware and software write protection and low power consumption make it ideal for frequent-write automotive and industrial applications.