AT21CS01 EEPROM

Microchip Technology AT21CS01 EEPROM device is self-powered via 1.7V to 3.6V pull-up voltage in the single I/O line low voltage operation. These AT21CS01 provide 1,024bits of serial EEPROM internally organized as 128 words of 8 bits each (1Kbit). This device shares a common single-wire bus with an I2C protocol structure from which communication is achieved through a single I/O pin. The AT21CS01 features a 15.4Kbps max bit rate in standard speed mode and a 125Kbps max bit rate in high-speed mode. 

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Description Datasheet Availability Pricing (TWD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Memory Size
Interface Type
Organization
Package / Case
Supply Voltage - Min
Supply Voltage - Max
Mounting Style
Data Retention
Minimum Operating Temperature
Maximum Operating Temperature
Series
Packaging

Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 3-SOT23
Datasheet
23,973In Stock
Cut Tape
NT$62.38
NT$47.68
NT$43.02
NT$41.23
Reel
NT$26.24
View
MouseReel Available
Min.: 1
Mult.: 1
: 5,000
1 kbit 1-Wire 128 x 8 SOT-23-3 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape, MouseReel

Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 3-SOT23
Datasheet
3,422In Stock
Cut Tape
NT$36.93
Reel
NT$31.30
MouseReel Available
Min.: 1
Mult.: 1
: 5,000
1 kbit 1-Wire 128 x 8 SOT-23-3 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape, MouseReel

Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 3-SOT23
Datasheet
4,295In Stock
Cut Tape
NT$31.55
NT$31.30
Reel
NT$26.60
NT$26.49
MouseReel Available
Min.: 1
Mult.: 1
: 5,000
1 kbit 1-Wire 128 x 8 SOT-23-3 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape, MouseReel

Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 3-SOT23
Datasheet
2,647In Stock
Cut Tape
NT$25.10
NT$24.99
NT$24.34
Reel
NT$20.69
NT$20.58
MouseReel Available
Min.: 1
Mult.: 1
: 5,000
1 kbit 1-Wire 128 x 8 SOT-23-3 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape, MouseReel

Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 3-SOT23
Datasheet
13,597In Stock
Cut Tape
NT$31.55
NT$31.40
Reel
NT$26.67
NT$26.56
Min.: 1
Mult.: 1
: 5,000
1 kbit 1-Wire 128 x 8 SOT-23-3 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape
Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 8-SOIC
Datasheet
3,865In Stock
Cut Tape
NT$22.23
NT$22.19
Reel
NT$18.86
NT$18.71
Min.: 1
Mult.: 1
: 4,000
1 kbit 1-Wire 128 x 8 SOIC-8 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape

Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 3-SOT23
Datasheet
12,050In Stock
Cut Tape
NT$27.25
NT$27.14
Reel
NT$23.05
Min.: 1
Mult.: 1
: 5,000
1 kbit 1-Wire 128 x 8 SOT-23-3 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape
Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 8-SOIC
Datasheet
3,970In Stock
Cut Tape
NT$22.23
NT$22.19
Reel
NT$18.86
NT$18.75
MouseReel Available
Min.: 1
Mult.: 1
: 4,000
1 kbit 1-Wire 128 x 8 SOIC-8 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape, MouseReel
Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 8-SOIC
Datasheet
3,598In Stock
Cut Tape
NT$28.68
NT$28.36
Reel
NT$24.09
NT$23.98
Min.: 1
Mult.: 1
: 4,000
1 kbit 1-Wire 128 x 8 SOIC-8 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape
Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 8-SOIC
Datasheet
3,980In Stock
Cut Tape
NT$22.23
NT$22.19
Reel
NT$18.86
NT$18.75
Min.: 1
Mult.: 1
: 4,000
1 kbit 1-Wire 128 x 8 SOIC-8 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape

Microchip Technology EEPROM 1.7-3.6V, 125Kbps, Ind Tmp, 3-SOT23, Add=000
Datasheet
34,787In Stock
34,900Expected 11/9/2026
Cut Tape
NT$9.68
NT$9.36
Reel
NT$8.42
MouseReel Available
Min.: 1
Mult.: 1
: 5,000
1 kbit 1-Wire 128 x 8 SOT-23-3 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape, MouseReel
Microchip Technology EEPROM 1.7-3.6V, 125Kbps, Ind Tmp, 8-SOIC, Add=000
Datasheet
1,468In Stock
Cut Tape
NT$9.68
NT$9.36
Reel
NT$8.42
Min.: 1
Mult.: 1
: 4,000
1 kbit 1-Wire 128 x 8 SOIC-8 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape

Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 3-SOT23
Datasheet
161In Stock
5,000Expected 11/16/2026
Cut Tape
NT$25.81
NT$25.13
NT$24.66
NT$24.63
Reel
NT$24.16
Min.: 1
Mult.: 1
: 5,000
1 kbit 1-Wire 128 x 8 SOT-23-3 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel, Cut Tape
Microchip Technology EEPROM 1.7-3.6V 125Kbps Ind Tmp 2-XSFN
Datasheet
Non-Stocked Lead-Time 8 Weeks
NT$9.32
NT$9.18
NT$8.78
NT$8.42
Min.: 1
Mult.: 1
1 kbit 1-Wire 128 x 8 SOIC-8 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Tube
Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 8-SOIC
Datasheet
Non-Stocked Lead-Time 8 Weeks
Reel
NT$21.01
Min.: 4,000
Mult.: 4,000
: 4,000
1 kbit 1-Wire 128 x 8 SOIC-8 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel
Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 8-SOIC
Datasheet
Non-Stocked Lead-Time 8 Weeks
Reel
NT$21.01
Min.: 4,000
Mult.: 4,000
: 4,000
1 kbit 1-Wire 128 x 8 SOIC-8 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel
Microchip Technology EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 8-SOIC
Datasheet
Non-Stocked Lead-Time 17 Weeks
Reel
NT$18.86
Min.: 4,000
Mult.: 4,000
: 4,000
1 kbit 1-Wire 128 x 8 SOIC-8 1.7 V 3.6 V SMD/SMT 100 Year - 40 C + 85 C AT21CS01 Reel