NM25C640 Datasheet (Fairchild) - 64K-Bit Serial CMOS EEPROM (Serial Peripheral Interface (SPI) Synchronous Bus)

NM25C640, 64K-Bit Serial CMOS EEPROM (Serial Peripheral Interface (SPI) Synchronous Bus)

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 suppo

NM25C640 Features

* s 2.75 MHz clock rate @ 4.5V to 5.5V 2.1 MHz @ 2.7V to 4.5V s 65,536 bits organized as 8,192 x 8 s Multiple chips on the same 3-wire bus with separate chip select lines s Self-timed programming cycle s Simultaneous programming of 1 to 32 bytes at a time s Status register can be polled during program