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AT25x SPI Serial EEPROMs

Microchip Technology AT25x SPI Serial EEPROMs are designed for use in applications where low-power and low-voltage operations are essential. These EEPROMs feature block write protection, 20MHz clock cycle, self-timed write cycle, write protect pin, and write disable instructions. The AT25x EEPROMs are enabled through the Chip Select pin (CS) and accessed via a 3-wire interface. This 3-wire interface consists of Serial Clock (SCK), Serial Data Input (SI), and Serial Data Output (SO).

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) 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	Qualification	Packaging
EEPROM 1K (128 X 8) SPI, 1.8V AT25010B-MAHL-T Microchip Technology 1: S/1.36 6,886In Stock	Mfr. Part # AT25010B-MAHL-T Mouser Part # 556-AT25010B-MAHL-T	Microchip Technology	EEPROM 1K (128 X 8) SPI, 1.8V Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	6,886In Stock	Cut Tape S/1.36 S/1.33 S/1.31 Reel S/1.25 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	1 kbit	3-Wire, SPI	20 MHz	128 x 8	UDFN-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25010B		Reel, Cut Tape, MouseReel
EEPROM 1.8-5.5V, 20MHz, Ind Tmp, 8-UDFN AT25128B-MAHL-E Microchip Technology 1: S/3.19 9,332In Stock	Mfr. Part # AT25128B-MAHL-E Mouser Part # 579-AT25128B-MAHL-E	Microchip Technology	EEPROM 1.8-5.5V, 20MHz, Ind Tmp, 8-UDFN Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	9,332In Stock	Cut Tape S/3.19 S/3.16 Reel S/3.16 MouseReel Available	Min.: 1 Mult.: 1 : 15,000	128 kbit	3-Wire, SPI	20 MHz	16 k x 8	UDFN-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25128B		Reel, Cut Tape, MouseReel
EEPROM 64K Density SPI 8,192 x 8 Organ AT25640B-SSHL-B Microchip Technology 1: S/2.10 3,024In Stock	Mfr. Part # AT25640B-SSHL-B Mouser Part # 556-AT25640B-SSHL-B	Microchip Technology	EEPROM 64K Density SPI 8,192 x 8 Organ Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	3,024In Stock	S/2.10 S/2.02 S/1.99 S/1.95	Min.: 1 Mult.: 1	64 kbit	3-Wire, SPI	20 MHz	8 k x 8	SOIC-Narrow-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25640B		Tube
EEPROM 64K Density SPI 8,192 x 8 Organ AT25640B-XHL-T Microchip Technology 1: S/2.34 5,288In Stock	Mfr. Part # AT25640B-XHL-T Mouser Part # 556-AT25640B-XHL-T	Microchip Technology	EEPROM 64K Density SPI 8,192 x 8 Organ Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	5,288In Stock	Cut Tape S/2.34 S/2.32 Reel S/2.16 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	64 kbit	3-Wire, SPI	20 MHz	8 k x 8	TSSOP-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25640B		Reel, Cut Tape, MouseReel
EEPROM 128K Density SPI 16,384 x 8 Organ AT25128B-SSHL-B Microchip Technology 1: S/2.80 4,268In Stock	Mfr. Part # AT25128B-SSHL-B Mouser Part # 556-AT25128B-SSHL-B	Microchip Technology	EEPROM 128K Density SPI 16,384 x 8 Organ Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	4,268In Stock	S/2.80 S/2.72 S/2.61	Min.: 1 Mult.: 1	128 kbit	3-Wire, SPI	20 MHz	16 k x 8	SOIC-Narrow-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25128B		Tube
EEPROM 128K Density SPI 16,384 x 8 Organ AT25128B-SSHL-T Microchip Technology 1: S/3.00 8,488In Stock	Mfr. Part # AT25128B-SSHL-T Mouser Part # 556-AT25128B-SSHL-T	Microchip Technology	EEPROM 128K Density SPI 16,384 x 8 Organ Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	8,488In Stock	Cut Tape S/3.00 S/2.99 S/2.98 Reel S/2.78 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	128 kbit	3-Wire, SPI	20 MHz	16 k x 8	SOIC-Narrow-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25128B		Reel, Cut Tape, MouseReel
EEPROM 1K (128 X 8) SPI, 1.8V AT25010B-SSHL-B Microchip Technology 1: S/1.17 460In Stock	Mfr. Part # AT25010B-SSHL-B Mouser Part # 556-AT25010B-SSHL-B	Microchip Technology	EEPROM 1K (128 X 8) SPI, 1.8V Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	460In Stock	S/1.17 S/1.16 S/1.12 S/1.08	Min.: 1 Mult.: 1	1 kbit	3-Wire, SPI	20 MHz	128 x 8	SOIC-Narrow-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25010B		Tube
EEPROM 1K (128 X 8) SPI, 1.8V AT25010B-XHL-B Microchip Technology 1: S/1.25 319In Stock	Mfr. Part # AT25010B-XHL-B Mouser Part # 556-AT25010B-XHL-B	Microchip Technology	EEPROM 1K (128 X 8) SPI, 1.8V Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	319In Stock	S/1.25 S/1.20 S/1.16	Min.: 1 Mult.: 1	1 kbit	3-Wire, SPI	20 MHz	128 x 8	TSSOP-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25010B		Tube
EEPROM 128K Density SPI 16,384 x 8 Organ AT25128B-XHL-B Microchip Technology 1: S/2.88 1,195In Stock	Mfr. Part # AT25128B-XHL-B Mouser Part # 556-AT25128B-XHL-B	Microchip Technology	EEPROM 128K Density SPI 16,384 x 8 Organ Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	1,195In Stock	S/2.88 S/2.84 S/2.68 S/2.65	Min.: 1 Mult.: 1	128 kbit	3-Wire, SPI	20 MHz	16 k x 8	TSSOP-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25128B		Tube
EEPROM 64K Density SPI 8,192 x 8 Organ AT25640B-XHL-B Microchip Technology 1: S/2.34 385In Stock 700Expected 1/1/2027	Mfr. Part # AT25640B-XHL-B Mouser Part # 556-AT25640B-XHL-B	Microchip Technology	EEPROM 64K Density SPI 8,192 x 8 Organ Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	385In Stock 700Expected 1/1/2027	S/2.34 S/2.32 S/2.24 S/2.20 S/2.16	Min.: 1 Mult.: 1	64 kbit	3-Wire, SPI	5 MHz	8 k x 8	TSSOP-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25640B		Tube
EEPROM 64K Density SPI 8,192 x 8 Organ AT25640B-SSHL-T Microchip Technology 1: S/2.30 7,922Expected 12/25/2026	Mfr. Part # AT25640B-SSHL-T Mouser Part # 556-AT25640B-SSHL-T	Microchip Technology	EEPROM 64K Density SPI 8,192 x 8 Organ Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	7,922Expected 12/25/2026	Cut Tape S/2.30 S/2.27 Reel S/2.07 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	64 kbit	3-Wire, SPI	20 MHz	8 k x 8	SOIC-Narrow-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25640B		Reel, Cut Tape, MouseReel
EEPROM 1K (128 X 8) SPI, 1.8V AT25010B-SSHL-T Microchip Technology 1: S/1.21 8,000Expected 12/14/2026	Mfr. Part # AT25010B-SSHL-T Mouser Part # 556-AT25010B-SSHL-T	Microchip Technology	EEPROM 1K (128 X 8) SPI, 1.8V Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	8,000Expected 12/14/2026	Cut Tape S/1.21 S/1.19 Reel S/1.08 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	1 kbit	3-Wire, SPI	20 MHz	128 x 8	SOIC-Narrow-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25010B		Reel, Cut Tape, MouseReel
EEPROM 1K (128 X 8) SPI, 1.8V AT25010B-XHL-T Microchip Technology 5,000: S/1.16 Non-Stocked Lead-Time 9 Weeks	Mfr. Part # AT25010B-XHL-T Mouser Part # 556-AT25010B-XHL-T	Microchip Technology	EEPROM 1K (128 X 8) SPI, 1.8V Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	Non-Stocked Lead-Time 9 Weeks	Reel S/1.16	Min.: 5,000 Mult.: 5,000 : 5,000	1 kbit	3-Wire, SPI	20 MHz	128 x 8	TSSOP-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25010B		Reel
EEPROM 128K Density SPI 16,384 x 8 Organ AT25128B-XHL-T Microchip Technology 5,000: S/2.82 Lead-Time 10 Weeks	Mfr. Part # AT25128B-XHL-T Mouser Part # 556-AT25128B-XHL-T	Microchip Technology	EEPROM 128K Density SPI 16,384 x 8 Organ Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	Lead-Time 10 Weeks	Reel S/2.82	Min.: 5,000 Mult.: 5,000 : 5,000	128 kbit	3-Wire, SPI	20 MHz	16 k x 8	TSSOP-8		1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25128B		Reel
EEPROM 64K Density SPI 8,192 x 8 Organ AT25640B-MAHL-T Microchip Technology 5,000: S/2.24 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # AT25640B-MAHL-T Mouser Part # 556-AT25640B-MAHL-T	Microchip Technology	EEPROM 64K Density SPI 8,192 x 8 Organ Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel S/2.24	Min.: 5,000 Mult.: 5,000 : 5,000	64 kbit	3-Wire, SPI	20 MHz	8 k x 8	UDFN-8		1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25640B		Reel
EEPROM 1.8-5.5V, 20MHz, Ind Tmp, 8-UDFN AT25010B-MAHL-E Microchip Technology 15,000: S/1.31 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # AT25010B-MAHL-E Mouser Part # 579-AT25010B-MAHL-E	Microchip Technology	EEPROM 1.8-5.5V, 20MHz, Ind Tmp, 8-UDFN Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel S/1.31	Min.: 15,000 Mult.: 15,000 : 15,000	1 kbit	3-Wire, SPI	20 MHz	128 x 8	UDFN-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25010B		Reel
EEPROM 5MHz, Auto Grade, 8-SOIC-N AT25010B-SSPD-T Microchip Technology 4,000: S/1.45 Non-Stocked Lead-Time 9 Weeks	Mfr. Part # AT25010B-SSPD-T Mouser Part # 579-AT25010B-SSPD-T	Microchip Technology	EEPROM 5MHz, Auto Grade, 8-SOIC-N	Datasheet	Non-Stocked Lead-Time 9 Weeks	Reel S/1.45	Min.: 4,000 Mult.: 4,000 : 4,000	1 kbit	SPI	5 MHz	128 x 8	SOIC-Narrow-8		2.5 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 125 C	AT25010B	AEC-Q100	Reel
EEPROM 5MHz, Auto Temp, 8-TSSOP AT25010B-XPD-T Microchip Technology 5,000: S/1.45 Non-Stocked Lead-Time 8 Weeks	Mfr. Part # AT25010B-XPD-T Mouser Part # 579-AT25010B-XPD-T	Microchip Technology	EEPROM 5MHz, Auto Temp, 8-TSSOP	Datasheet	Non-Stocked Lead-Time 8 Weeks	Reel S/1.45	Min.: 5,000 Mult.: 5,000 : 5,000	1 kbit	SPI	5 MHz	128 x 8	TSSOP-8		2.5 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 125 C	AT25010B	AEC-Q100	Reel
EEPROM 2.5-5.5v, 5MHz, A-Tmp, 8-TSSOP AT25128B-XPDGV-T Microchip Technology 5,000: S/3.86 Non-Stocked Lead-Time 10 Weeks	Mfr. Part # AT25128B-XPDGV-T Mouser Part # 579-AT25128B-XPDGV-T	Microchip Technology	EEPROM 2.5-5.5v, 5MHz, A-Tmp, 8-TSSOP Learn More about Microchip Technology microchip infotainment	Datasheet	Non-Stocked Lead-Time 10 Weeks	Reel S/3.86	Min.: 5,000 Mult.: 5,000 : 5,000	128 kbit	SPI	5 MHz	16 k x 8	TSSOP-8		2.5 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 125 C	AT25128B	AEC-Q100	Reel
EEPROM 1.8-5.5V, 20MHz, Ind Tmp, 8-UDFN AT25640B-MAHL-E Microchip Technology 1: S/2.45 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # AT25640B-MAHL-E Mouser Part # 579-AT25640B-MAHL-E	Microchip Technology	EEPROM 1.8-5.5V, 20MHz, Ind Tmp, 8-UDFN Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	Non-Stocked Lead-Time 12 Weeks	Cut Tape S/2.45 S/2.44 Reel S/2.24	Min.: 1 Mult.: 1 : 5,000	64 kbit	SPI	20 MHz	8 k x 8	UDFN-8		1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25640B		Reel, Cut Tape
EEPROM 128K Density SPI 16,384 x 8 Organ AT25128B-MAHL-T Microchip Technology 5,000: S/2.90 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # AT25128B-MAHL-T Mouser Part # 556-AT25128B-MAHL-T	Microchip Technology	EEPROM 128K Density SPI 16,384 x 8 Organ Learn More about Microchip Technology microchip at25x spi serial eeproms	Datasheet	Non-Stocked Lead-Time 13 Weeks	Reel S/2.90	Min.: 5,000 Mult.: 5,000 : 5,000	128 kbit	3-Wire, SPI	20 MHz	16 k x 8	UDFN-8	80 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	AT25128B		Reel

AT25x SPI Serial EEPROMs

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