The 93C66B-E/P is a 4-Kbit serial EEPROM organized as 256 words of 16 bits. It operates on a supply voltage range of 4.5V to 5.5V and supports both Industrial and Extended temperature ranges. This device features low-power CMOS technology, a standard three-wire serial I/O, and self-timed erase/write cycles with power-on/off data protection circuitry. With high reliability including an endurance of 1,000,000 erase/write cycles and data retention exceeding 200 years, it is ideal for low-power, nonvolatile memory applications.