View nm25c160 datasheet:

March 1999 NM25C160 16K-Bit Serial CMOS EEPROM (Serial Peripheral Interface (SPI) Synchronous Bus) General Description Features The NM25C160 is a 16,384-bit CMOS EEPROM with an SPI 2.1 MHz clock rate @ 2.7V to 5.5V compatible serial interface. The NM25C160 is designed for data 16,384 bits organized as 2,048 x 8 storage in applications requiring both non-volatile memory and in- Multiple chips on the same 3-wire bus with separate chip system data updates. This EEPROM is well suited for applications select lines using the 68HC11 series of microcontrollers that support the SPI Self-timed programming cycle interface for high speed communication with peripheral devices via a serial bus to reduce pin count. The NM25C160 is imple- Simultaneous programming of 1 to 16 bytes at a