NM25C640 64K-Bit Serial
CMOS EEPROM (Serial Periphrial Interface (SPI) Synchronous Bus)
PRELIMINARY
March 1999
NM25C640 64K-Bit Serial
CMOS EEPROM (Serial Peripheral Interface (SPI) Synchronous Bus)
General Description
The NM25C640 is a 65,536-bit
CMOS EEPROM with an SPI compatible serial interface.
The NM25C640 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 NM25C640 is implemented in Fairchild Semiconductor’s floating g...