The NM25C020 is a 2048-bit CMOS EEPROM with an SPI compatible serial interface. The NM25C020 is designed for data storage in applications requiring both non-volatile memory and insystem data updates. This EEPROM is well suited for applications using the 68HC11 series of microcontrollers that support the SPI interface for high speed communication with peripheral devices via a serial bus to reduce pin count. The NM25C020 is implemented in Fairchild Semiconductor's floating gate CMOS process that provides superior endurance and data retention.