AT24CSW020 Series

2Kb I2C compatible 2-wire Serial EEPROM with Software Write Protection and a Pre-programmed Serial Number

Catalog

2Kb I2C compatible 2-wire Serial EEPROM with Software Write Protection and a Pre-programmed Serial Number

Part	Memory Size	Memory Type	Memory Organization [custom]	Memory Organization [custom]	Supplier Device Package	Access Time	Mounting Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Write Cycle Time - Word, Page	Memory Interface	Technology	Operating Temperature [Min]	Operating Temperature [Max]	Memory Format	Package / Case
Microchip Technology AT24CSW020-UUM0B-T	256 B	Non-Volatile	8	256	4-WLCSP	450 ns	Surface Mount	3.6 V	1.7 V	5 ms	I2C	EEPROM	-40 °C	85 °C	EEPROM	4-XFBGA WLCSP

Catalog

2Kb I2C compatible 2-wire Serial EEPROM with Software Write Protection and a Pre-programmed Serial Number

Key Features

• * 256 x 8 (2 Kbit)

• * 400 kHz and 1 MHz clock compatibility

• * Factory set hardware slave address

• * Five Software Write Protection configuration options

• * Protection settings can be made permanent

• * Factory programmed 128-bit unique serial number

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

• * Read current 0.15 mA (Typ), 0.5 mA (Max)

• * Write current 0.2 mA (Typ), 1 mA (Max)

• * Standby current 0.1 uA (Typ), 0.8 uA (Max)

• * More than 1 million erase/write cycles

• * Data retention > 100 years

• * Available in a 4-ball Ultra-thin WLCSP package

Description

The Microchip AT24CSW020 is a 2 Kb Serial EEPROM utilizing an I2C (2-wire) serial interface. The device is organized as one block of 256 x 8 and is optimized for use in consumer applications where reliable and dependable nonvolatile memory storage is essential. The device features Software Write Protection, which can be used to write protect 1/4, 1/2, or the entire memory array and also provides the user the capability to make the write protection permanent. Additionally, the AT24CSW020 includes a 256-bit security register separate from the main array. The first half of the security register contains a 128-bit factory-programmed unique serial number while the remaining half is a user programmable and permanently lockable space. The 128-bit serial number is guaranteed unique across the entire CS series of Serial EEPROM products and eliminates the time consuming step of performing and ensuring serialization of a product on a manufacturing line.