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	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

Catalog

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

Key Features

- 128 x 8 (1 Kbit)

- I²C protocol structure

- Self-Timed Erase and Write Cycles (5 ms max.)

- Communication through a single I/O pin

- Standard Speed (15.4 kbps) and High Speed (125 kbps) Modes

- Read current 0.08 mA (Typ), 0.3 mA (Max)

- Write current 0.2 mA (Typ), 0.5 mA (Max)

- Standby current 0.7 uA (Typ), 2.5 uA (Max)

- Four independent 256-bit zones

- More than 1 million erase/write cycles

- Data retention > 100 years

- ESD protection > 8000V (HBM)

- AEC-Q100 Grade 1 Qualified

- Factory Programming Available

- Available in 8-pin SOIC (150 mil), 3-pin SOT23, 2-pad XSFN, and 4-ball Thin CSP packages.

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.