Specification	AT21CS01-MCHM10-T

Memory Format	EEPROM
Memory Interface	1-Wire®
Memory Organization	128 x 8
Memory Size	128 B
Memory Type	Non-Volatile
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	2-VDFN
Supplier Device Package	2-VSFN (2x2.35)
Technology	EEPROM
Voltage - Supply [Max]	3.6 V
Voltage - Supply [Min]	1.7 V

AT21CS01 Series

Single-Wire 1-Kbit (128 x 8) Serial EEPROM with Factory-Programmed 64-Bit Serial Number

Part	Memory Size	Memory Type	Clock Frequency	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Memory Organization	Memory Format	Mounting Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Technology	Write Cycle Time - Word, Page	Memory Interface	Write Cycle Time - Word, Page [custom]	Write Cycle Time - Word, Page [custom]	Package / Case [y]	Package / Case [x]
Microchip Technology AT21CS01-STUM11-T	128 B	Non-Volatile	125 kbps	SC-59 SOT-23-3 TO-236-3	-40 °C	85 °C	SOT-23-3	128 x 8	EEPROM	Surface Mount	3.6 V	1.7 V	EEPROM	5 ms
Microchip Technology AT21CS01-MCHM10-B	128 B	Non-Volatile		2-VDFN	-40 °C	85 °C	2-VSFN (2x2.35)	128 x 8	EEPROM	Surface Mount	3.6 V	1.7 V	EEPROM		1-Wire®	150 µs	150 µs
Microchip Technology AT21CS01-STUM13-T	128 B	Non-Volatile	125 kbps	SC-59 SOT-23-3 TO-236-3	-40 °C	85 °C	SOT-23-3	128 x 8	EEPROM	Surface Mount	3.6 V	1.7 V	EEPROM	5 ms
Microchip Technology AT21CS01-SSHM10-B	128 B	Non-Volatile	125 kbps	8-SOIC	-40 °C	85 °C	8-SOIC	128 x 8	EEPROM	Surface Mount	3.6 V	1.7 V	EEPROM	5 ms				3.9 mm	0.154 in
Microchip Technology AT21CS01-STUM12-T	128 B	Non-Volatile	125 kbps	SC-59 SOT-23-3 TO-236-3	-40 °C	85 °C	SOT-23-3	128 x 8	EEPROM	Surface Mount	3.6 V	1.7 V	EEPROM	5 ms
Microchip Technology AT21CS01-MCHM10-T	128 B	Non-Volatile		2-VDFN	-40 °C	85 °C	2-VSFN (2x2.35)	128 x 8	EEPROM	Surface Mount	3.6 V	1.7 V	EEPROM		1-Wire®
Microchip Technology AT21CS01-STUM16-T	128 B	Non-Volatile	125 kbps	SC-59 SOT-23-3 TO-236-3	-40 °C	85 °C	SOT-23-3	128 x 8	EEPROM	Surface Mount	3.6 V	1.7 V	EEPROM	5 ms
Microchip Technology AT21CS01-SSHM16-T	128 B	Non-Volatile	125 kbps	8-SOIC	-40 °C	85 °C	8-SOIC	128 x 8	EEPROM	Surface Mount	3.6 V	1.7 V	EEPROM	5 ms				3.9 mm	0.154 in
Microchip Technology AT21CS01-UUM0B-T	128 B	Non-Volatile	125 kbps	4-XFBGA WLCSP	-40 °C	85 °C	4-WLCSP	128 x 8	EEPROM	Surface Mount	3.6 V	1.7 V	EEPROM	5 ms
Microchip Technology AT21CS01-TOHM10-B	128 B	Non-Volatile	125 kbps	TO-226-3 TO-92-3	-40 °C	85 °C	TO-92-3	128 x 8	EEPROM	Through Hole	3.6 V	1.7 V	EEPROM	5 ms

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.29
		25	$ 0.28
		100	$ 0.27
	Digi-Reel®	1	$ 0.29
		25	$ 0.28
		100	$ 0.27
	Tape & Reel (TR)	5000	$ 0.27
Microchip Direct	T/R	1	$ 0.28
		25	$ 0.27
		100	$ 0.26
		1000	$ 0.25
		5000	$ 0.23
		10000	$ 0.22

Description

General part information

AT21CS01 Series

The Microchip AT21CS01 is a 1 Kb Serial EEPROM utilizing the

Single-Wire bus. Only two pins are needed to access the device: SI/O and GND.

The SI/O signal is a combination data and power line, providing power to the

Documents

Technical documentation and resources

Datasheet

AT21CS01/AT21CS11 - 1-Kbit Single-Wire, I/O Powered Serial EEPROM with Unique 64-Bit Serial Number

Data Sheets

AT21CS01-MCHM10-T

Deep-Dive with AI

AT21CS01-MCHM10-T

Deep-Dive with AI

Technical Specifications

AT21CS01 Series

Pricing

Description

AT21CS01 Series

Documents

Datasheet

Support for Third Party Memory Devices Programmer Sources

PCB Mounting Guidelines for Surface Mount Packages

AT21CS01 Silicon Errata

Interfacing PIC MCUs with Single-Wire Serial EEPROMs

AT21CS01/AT21CS11 - 1-Kbit Single-Wire, I/O Powered Serial EEPROM with Unique 64-Bit Serial Number

AT21CS01 Series