The document describes the features and characteristics of the AT93C46/56/66 series products. It is a serial electrically erasable programmable read-only memory (EEPROM) with low power and low voltage operation. The product provides storage capacities of 1K, 2K, and 4K bits. It features a three-wire serial interface, 2 MHz clock rate, and self-timed write cycle. Additionally, the product offers high reliability and long data retention capability, making it suitable for industrial and commercial applications.