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NM25C640

Part Number	NM25C640
Manufacturer	Fairchild
Description	64K-Bit Serial CMOS EEPROM (Serial Peripheral Interface (SPI) Synchronous Bus)
Published	May 7, 2005
Detailed Description	NM25C640 64K-Bit Serial CMOS EEPROM (Serial Periphrial Interface (SPI) Synchronous Bus) PRELIMINARY March 1999 NM25C64...
Datasheet	NM25C640 PDF File

Overview

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 gate CMOS process that provides superior endurance and data retention.
The serial data transmission of this device requires four signal lines to control the device operation: Chip Select (CS), Clock (SCK), Data In (SI), and Serial Data Out (SO).
All programming cycles are completely self-timed and do...

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

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