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24CW I2C Serial EEPROMs

Microchip Technology 24CW I²C Serial EEPROMs are high-speed, highly-reliable, low-power devices in 16Kb, 32Kb, 64Kb, and 128Kb densities. The 24CW series is optimized for consumer and industrial applications, where reliable nonvolatile memory storage is essential. The 24CW series allows up to eight devices to share a common I²C bus and can operate across a broad voltage range (1.6V to 5.5V).

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	Memory Size	Interface Type	Maximum Clock Frequency	Organization	Package / Case	Access Time	Supply Voltage - Min	Supply Voltage - Max	Mounting Style	Data Retention	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
EEPROM 32 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW320T-I/OT Microchip Technology 1: ¥68.1 227,687In Stock	Mfr. Part # 24CW320T-I/OT Mouser Part # 579-24CW320T-I/OT	Microchip Technology	EEPROM 32 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	227,687In Stock	Cut Tape ¥68.1 ¥66.9 ¥66.3 Reel ¥62.3 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	32 kbit	2-Wire, I2C	1 MHz	4 k x 8	SOT-23-5	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW320	Reel, Cut Tape, MouseReel
EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW160T-I/OT Microchip Technology 1: ¥63.1 203,832In Stock	Mfr. Part # 24CW160T-I/OT Mouser Part # 579-24CW160T-I/OT	Microchip Technology	EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	203,832In Stock	Cut Tape ¥63.1 ¥57.8 Reel ¥55.3 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	16 kbit	2-Wire, I2C	1 MHz	2 k x 8	SOT-23-5	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW160	Reel, Cut Tape, MouseReel
EEPROM 32 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW320T-I/SN Microchip Technology 1: ¥61.5 4,581In Stock	Mfr. Part # 24CW320T-I/SN Mouser Part # 579-24CW320T-I/SN	Microchip Technology	EEPROM 32 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	4,581In Stock	Cut Tape ¥61.5 ¥61.1 ¥59.5 Reel ¥54.5	Min.: 1 Mult.: 1 : 3,300	32 kbit	2-Wire, I2C	1 MHz	4 k x 8	SOIC-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW320	Reel, Cut Tape
EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW1280T-I/ST Microchip Technology 1: ¥114.6 1,307In Stock	Mfr. Part # 24CW1280T-I/ST Mouser Part # 579-24CW1280T-I/ST	Microchip Technology	EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	1,307In Stock	Cut Tape ¥114.6 ¥114.4 ¥107.5 Reel ¥99.2	Min.: 1 Mult.: 1 : 2,500	128 kbit	2-Wire, I2C	1 MHz	16 k x 8	TSSOP-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW1280	Reel, Cut Tape
EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW640T-I/Q4B Microchip Technology 1: ¥79.7 4,783In Stock	Mfr. Part # 24CW640T-I/Q4B Mouser Part # 579-24CW640T-I/Q4B	Microchip Technology	EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	4,783In Stock	Cut Tape ¥79.7 ¥76.2 Reel ¥72.6 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	64 kbit	I2C	1 MHz	8 k x 8	UDFN-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW1280T-I/OT Microchip Technology 1: ¥109.6 29,489In Stock	Mfr. Part # 24CW1280T-I/OT Mouser Part # 579-24CW1280T-I/OT	Microchip Technology	EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	29,489In Stock	Cut Tape ¥109.6 ¥109.3 Reel ¥99.2 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	128 kbit	2-Wire, I2C	1 MHz	16 k x 8	SOT-23-5	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW1280	Reel, Cut Tape, MouseReel
EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW1280T-I/MUY Microchip Technology 1: ¥260.8 1,748In Stock	Mfr. Part # 24CW1280T-I/MUY Mouser Part # 579-24CW1280T-I/MUY	Microchip Technology	EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	1,748In Stock	Cut Tape ¥260.8 Reel ¥237.5 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	128 kbit	2-Wire, I2C	1 MHz	16 k x 8	UDFN-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW1280	Reel, Cut Tape, MouseReel
EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW640T-I/OT Microchip Technology 1: ¥89.7 8,317In Stock	Mfr. Part # 24CW640T-I/OT Mouser Part # 579-24CW640T-I/OT	Microchip Technology	EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	8,317In Stock	Cut Tape ¥89.7 ¥89 Reel ¥81.4 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	64 kbit	2-Wire, I2C	1 MHz	8 k x 8	SOT-23-5	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW640	Reel, Cut Tape, MouseReel
EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW160T-I/Q4B Microchip Technology 1: ¥56.5 3,246In Stock	Mfr. Part # 24CW160T-I/Q4B Mouser Part # 579-24CW160T-I/Q4B	Microchip Technology	EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	3,246In Stock	Cut Tape ¥56.5 ¥56 Reel ¥47.8 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	16 kbit	I2C	1 MHz	2 k x 8	UDFN-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
EEPROM 32 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW320T-I/Q4B Microchip Technology 1: ¥63.1 2,721In Stock	Mfr. Part # 24CW320T-I/Q4B Mouser Part # 579-24CW320T-I/Q4B	Microchip Technology	EEPROM 32 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	2,721In Stock	Cut Tape ¥63.1 ¥62 ¥61.1 Reel ¥58.5 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	32 kbit	I2C	1 MHz	4 k x 8	UDFN-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW160-I/SN Microchip Technology 1: ¥53.2 395In Stock	Mfr. Part # 24CW160-I/SN Mouser Part # 579-24CW160-I/SN	Microchip Technology	EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	395In Stock	¥53.2 ¥51.3 ¥47.8	Min.: 1 Mult.: 1	16 kbit	2-Wire, I2C	1 MHz	2 k x 8	SOIC-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW160	Tube
EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW160-I/ST Microchip Technology 1: ¥59.8 523In Stock	Mfr. Part # 24CW160-I/ST Mouser Part # 579-24CW160-I/ST	Microchip Technology	EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	523In Stock	¥59.8 ¥58.5 ¥53.2 ¥51.3	Min.: 1 Mult.: 1	16 kbit	2-Wire, I2C	1 MHz	2 k x 8	TSSOP-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW160	Tube
EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW160T-I/SN Microchip Technology 1: ¥56.5 1,998In Stock	Mfr. Part # 24CW160T-I/SN Mouser Part # 579-24CW160T-I/SN	Microchip Technology	EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	1,998In Stock	Cut Tape ¥56.5 ¥56 Reel ¥47.8	Min.: 1 Mult.: 1 : 3,300	16 kbit	2-Wire, I2C	1 MHz	2 k x 8	SOIC-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW160	Reel, Cut Tape
EEPROM 32 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW320-I/SN Microchip Technology 1: ¥63.1 1,080In Stock	Mfr. Part # 24CW320-I/SN Mouser Part # 579-24CW320-I/SN	Microchip Technology	EEPROM 32 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	1,080In Stock	¥63.1 ¥62 ¥60.3 ¥58.5	Min.: 1 Mult.: 1	32 kbit	2-Wire, I2C	1 MHz	4 k x 8	SOIC-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW320	Tube
EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW640-I/SN Microchip Technology 1: ¥79.7 476In Stock	Mfr. Part # 24CW640-I/SN Mouser Part # 579-24CW640-I/SN	Microchip Technology	EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	476In Stock	¥79.7 ¥76.1 ¥72.6	Min.: 1 Mult.: 1	64 kbit	2-Wire, I2C	1 MHz	8 k x 8	SOIC-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW640	Tube
EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW640-I/ST Microchip Technology 1: ¥81.4 300In Stock 800On Order	Mfr. Part # 24CW640-I/ST Mouser Part # 579-24CW640-I/ST	Microchip Technology	EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	300In Stock 800On Order On Order Ship Dates Mfr. #: 24CW640-I/ST Stock: 300 Can Ship Immediately On Order: 600 Expected 10/26/2026 200 Expected 11/2/2026 Factory Lead-Time: 10 Weeks	¥81.4 ¥79.7 ¥74.4	Min.: 1 Mult.: 1	64 kbit	2-Wire, I2C	1 MHz	8 k x 8	TSSOP-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW640	Tube
EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW640T-I/MUY Microchip Technology 1: ¥219.3 764In Stock	Mfr. Part # 24CW640T-I/MUY Mouser Part # 579-24CW640MUY	Microchip Technology	EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	764In Stock	Cut Tape ¥219.3 ¥214.3 Reel ¥212.6 Quote Quote	Min.: 1 Mult.: 1 : 3,300	64 kbit	2-Wire, I2C	1 MHz	8 k x 8	UDFN-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW640	Reel, Cut Tape
EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW640T-I/SN Microchip Technology 1: ¥79.7 2,914In Stock	Mfr. Part # 24CW640T-I/SN Mouser Part # 579-24CW640T-I/SN	Microchip Technology	EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	2,914In Stock	Cut Tape ¥79.7 ¥76.2 Reel ¥72.6 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	64 kbit	2-Wire, I2C	1 MHz	8 k x 8	SOIC-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW640	Reel, Cut Tape, MouseReel
EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW640T-I/ST Microchip Technology 1: ¥84.7 1,956In Stock	Mfr. Part # 24CW640T-I/ST Mouser Part # 579-24CW640T-I/ST	Microchip Technology	EEPROM 64 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	1,956In Stock	Cut Tape ¥84.7 ¥83.9 Reel ¥74.4	Min.: 1 Mult.: 1 : 2,500	64 kbit	2-Wire, I2C	1 MHz	8 k x 8	TSSOP-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW640	Reel, Cut Tape
EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW1280-I/SN Microchip Technology 1: ¥104.6 414In Stock	Mfr. Part # 24CW1280-I/SN Mouser Part # 579-24CW1280-I/SN	Microchip Technology	EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	414In Stock	¥104.6 ¥104.5 ¥99.2 ¥95.7	Min.: 1 Mult.: 1	128 kbit	2-Wire, I2C	1 MHz	16 k x 8	SOIC-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW1280	Tube
EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW1280T-I/SN Microchip Technology 1: ¥108 165In Stock 3,300Expected 12/25/2026	Mfr. Part # 24CW1280T-I/SN Mouser Part # 579-24CW1280T-I/SN	Microchip Technology	EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	165In Stock 3,300Expected 12/25/2026	Cut Tape ¥108 ¥106.8 Reel ¥95.7 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	128 kbit	2-Wire, I2C	1 MHz	16 k x 8	SOIC-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW1280	Reel, Cut Tape, MouseReel
EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW160T-I/MUY Microchip Technology 1: ¥196 134In Stock	Mfr. Part # 24CW160T-I/MUY Mouser Part # 579-24CW160MUY	Microchip Technology	EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	134In Stock	Cut Tape ¥196 Reel ¥166.1	Min.: 1 Mult.: 1 : 3,300	16 kbit	2-Wire, I2C	1 MHz	2 k x 8	UDFN-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW160	Reel, Cut Tape
EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW1280-I/ST Microchip Technology 1: ¥108 2In Stock	Mfr. Part # 24CW1280-I/ST Mouser Part # 579-24CW1280-I/ST	Microchip Technology	EEPROM 128 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	2In Stock	¥108 ¥104.5 ¥99.2	Min.: 1 Mult.: 1	128 kbit	2-Wire, I2C	1 MHz	16 k x 8	TSSOP-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW1280	Tube
EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW160T-I/ST Microchip Technology 1: ¥59.8 Non-Stocked Lead-Time 10 Weeks	Mfr. Part # 24CW160T-I/ST Mouser Part # 579-24CW160T-I/ST	Microchip Technology	EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	Non-Stocked Lead-Time 10 Weeks	Cut Tape ¥59.8 ¥58.5 Reel ¥51.3	Min.: 1 Mult.: 1 : 2,500	16 kbit	I2C	1 MHz	2 k x 8	TSSOP-8		1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW160	Reel, Cut Tape
EEPROM 32 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp 24CW320-I/ST Microchip Technology 1: ¥64.8 Non-Stocked Lead-Time 10 Weeks	Mfr. Part # 24CW320-I/ST Mouser Part # 579-24CW320-I/ST	Microchip Technology	EEPROM 32 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp Learn More about Microchip Technology microchip 24cw i2c eeprom	Datasheet	Non-Stocked Lead-Time 10 Weeks	¥64.8 ¥63.8 ¥62 ¥60.3	Min.: 1 Mult.: 1	32 kbit	2-Wire, I2C	1 MHz	4 k x 8	TSSOP-8	450 ns	1.6 V	5.5 V	SMD/SMT	200 Year	- 40 C	+ 85 C	24CW320	Tube

24CW I2C Serial EEPROMs

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