Specification	25LC640A-I/SN

Clock Frequency	10 MHz
Memory Format	EEPROM
Memory Interface	SPI
Memory Organization	8 K
Memory Size	64 Kbit
Memory Type	Non-Volatile
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SOIC
Technology	EEPROM
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	2.5 V
Write Cycle Time - Word, Page	5 ms

25LC640AX Series

64Kb 2.5V SPI Serial EEPROM

Part	Memory Interface	Write Cycle Time - Word, Page	Technology	Memory Format	Memory Type	Operating Temperature [Max]	Operating Temperature [Min]	Memory Size	Memory Organization	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Package / Case	Clock Frequency	Mounting Type	Package / Case [y]	Package / Case [x]	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case [custom]	Package / Case [custom]	Package / Case	Package / Case
Microchip Technology 25LC640AT-I/MNY	SPI	5 ms	EEPROM	EEPROM	Non-Volatile	85 °C	-40 °C	64 Kbit	8 K	2.5 V	5.5 V	8-TDFN (2x3)	8-WFDFN Exposed Pad	10 MHz	Surface Mount
Microchip Technology 25LC640A-M/SN	SPI	5 ms	EEPROM	EEPROM	Non-Volatile			64 Kbit	8 K	2.5 V	5.5 V	8-SOIC	8-SOIC	10 MHz	Surface Mount	3.9 mm	0.154 in	125 °C	-55 °C
Microchip Technology 25LC640A-E/ST	SPI	5 ms	EEPROM	EEPROM	Non-Volatile	125 °C	-40 °C	64 Kbit	8 K	2.5 V	5.5 V	8-TSSOP	8-TSSOP	10 MHz	Surface Mount					0.173 "	4.4 mm
Microchip Technology 25LC640AT-E/SN	SPI	5 ms	EEPROM	EEPROM	Non-Volatile	125 °C	-40 °C	64 Kbit	8 K	2.5 V	5.5 V	8-SOIC	8-SOIC	10 MHz	Surface Mount	3.9 mm	0.154 in
Microchip Technology 25LC640A-I/SN	SPI	5 ms	EEPROM	EEPROM	Non-Volatile	85 °C	-40 °C	64 Kbit	8 K	2.5 V	5.5 V	8-SOIC	8-SOIC	10 MHz	Surface Mount	3.9 mm	0.154 in
Microchip Technology 25LC640-I/P	SPI	5 ms	EEPROM	EEPROM	Non-Volatile	85 °C	-40 °C	64 Kbit	8 K	2.5 V	5.5 V	8-PDIP	8-DIP	2 MHz	Through Hole							0.3 in	7.62 mm
Microchip Technology 25LC640AXT-I/ST	SPI	5 ms	EEPROM	EEPROM	Non-Volatile	85 °C	-40 °C	64 Kbit	8 K	2.5 V	5.5 V	8-TSSOP	8-TSSOP	10 MHz	Surface Mount					0.173 "	4.4 mm
Microchip Technology 25LC640/WF	SPI	5 ms	EEPROM	EEPROM	Non-Volatile	70 °C	0 °C	64 Kbit	8 K	2.5 V	5.5 V	Die	Die	2 MHz	Surface Mount
Microchip Technology 25LC640AT-H/SN	SPI		EEPROM	EEPROM	Non-Volatile	150 °C	-40 °C	64 Kbit	8 K	2.5 V	5.5 V	8-SOIC	8-SOIC	5 MHz	Surface Mount	3.9 mm	0.154 in
Microchip Technology 25LC640/W	SPI	5 ms	EEPROM	EEPROM	Non-Volatile	70 °C	0 °C	64 Kbit	8 K	2.5 V	5.5 V	Die	Die	2 MHz	Surface Mount

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 0.78
		25	$ 0.74
		100	$ 0.72
Microchip Direct	TUBE	1	$ 0.76
		25	$ 0.72
		100	$ 0.70
		1000	$ 0.65
		5000	$ 0.61
		10000	$ 0.58
Newark	Each	1	$ 0.66
		110	$ 0.66
		210	$ 0.65

Description

General part information

25LC640AX Series

The Microchip 25LC640A is a 64 Kb Serial EEPROM utilizing the

industry standard Serial Peripheral Interface (SPI) compatible serial bus. The

device is organized as one block of 8192 x 8-bit and is optimized for use in consumer electronics, industrial, medical,

Documents

Technical documentation and resources

Datasheet

Using the C18 Compiler and the MSSP to Interface SPI? EEPROMs with PIC18 Devices

Application Notes

25LC640A-I/SN

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25LC640A-I/SN

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Technical Specifications

25LC640AX Series

Pricing

Description

25LC640AX Series

Documents

Datasheet

Using the C18 Compiler and the MSSP to Interface SPI? EEPROMs with PIC18 Devices

25LC640A 64K SPI Bus Serial EEPROM Extended (M) Operating Temperatures Data

Interfacing SPI? Serial EEPROMs to Microchip PICmicro® Microcontrollers

Interfacing SPI? Serial EEPROMs to PIC16 Devices

25LC640AX Series