AT21CS01 Series

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

Catalog

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

Part	Package Name	Memory Interface (Type)	Memory Type	Memory Size	Package / Case	Technology	Mounting Type	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Memory Depth	Memory Width	Operating Temperature (Min)	Operating Temperature (Max)	Write Cycle Time - Word	Write Cycle Time - Page	Clock Frequency	Memory Format	Package Width	Package Length	Memory Interface Wire Count
Microchip Technology AT21CS01-STUM11-T	SOT-23-3	I2C Single Wire	Non-Volatile	1 Kbit	SC-59 SOT-23-3 TO-236-3	EEPROM	Surface Mount	3.6 V	1.7 V	128	8 bit	-40 °C	85 °C	5 ms	5 ms	125 kbps	EEPROM
Microchip Technology AT21CS01-MCHM10-B	2-VSFN	®	Non-Volatile	1 Kbit	2-VDFN	EEPROM	Surface Mount	3.6 V	1.7 V	128	8 bit	-40 °C	85 °C	150 µs	150 µs		EEPROM	2.35 mm	2 mm	1
Microchip Technology AT21CS01-STUM13-T	SOT-23-3	I2C Single Wire	Non-Volatile	1 Kbit	SC-59 SOT-23-3 TO-236-3	EEPROM	Surface Mount	3.6 V	1.7 V	128	8 bit	-40 °C	85 °C	5 ms	5 ms	125 kbps	EEPROM
Microchip Technology AT21CS01-SSHM10-B	8-SOIC	I2C Single Wire	Non-Volatile	1 Kbit		EEPROM	Surface Mount	3.6 V	1.7 V	128	8 bit	-40 °C	85 °C	5 ms	5 ms	125 kbps	EEPROM	3.9 mm	0.154 in
Microchip Technology AT21CS01-STUM12-T	SOT-23-3	I2C Single Wire	Non-Volatile	1 Kbit	SC-59 SOT-23-3 TO-236-3	EEPROM	Surface Mount	3.6 V	1.7 V	128	8 bit	-40 °C	85 °C	5 ms	5 ms	125 kbps	EEPROM
Microchip Technology AT21CS01-MCHM10-T	2-VSFN	®	Non-Volatile	1 Kbit	2-VDFN	EEPROM	Surface Mount	3.6 V	1.7 V	128	8 bit	-40 °C	85 °C				EEPROM	2.35 mm	2 mm	1
Microchip Technology AT21CS01-STUM16-T	SOT-23-3	I2C Single Wire	Non-Volatile	1 Kbit	SC-59 SOT-23-3 TO-236-3	EEPROM	Surface Mount	3.6 V	1.7 V	128	8 bit	-40 °C	85 °C	5 ms	5 ms	125 kbps	EEPROM
Microchip Technology AT21CS01-SSHM16-T	8-SOIC	I2C Single Wire	Non-Volatile	1 Kbit		EEPROM	Surface Mount	3.6 V	1.7 V	128	8 bit	-40 °C	85 °C	5 ms	5 ms	125 kbps	EEPROM	3.9 mm	0.154 in
Microchip Technology AT21CS01-UUM0B-T	4-WLCSP	I2C Single Wire	Non-Volatile	1 Kbit	4-XFBGA WLCSP	EEPROM	Surface Mount	3.6 V	1.7 V	128	8 bit	-40 °C	85 °C	5 ms	5 ms	125 kbps	EEPROM
Microchip Technology AT21CS01-TOHM10-B	TO-92-3	I2C Single Wire	Non-Volatile	1 Kbit	TO-226-3 TO-92-3 (TO-226AA)	EEPROM	Through Hole	3.6 V	1.7 V	128	8 bit	-40 °C	85 °C	5 ms	5 ms	125 kbps	EEPROM

Catalog

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

Description

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 device with a parasitic power scheme. The device is organized as one block of 128 x 8 and is optimized for use in consumer and industrial applications where reliable and dependable nonvolatile memory storage is essential. The EEPROM is available in a variety of space-saving packaging options. The AT21CS01 features a 256-bit Security register which includes a 64-bit serial number. The device also features manufacturer ID support in which the device responds with a unique value for density and revision information.