Product Identification System

To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.

Product Family

Serial EEPROM with

a Security Register

Device Density & Feature

Shipping Carrier Option

Package Device Grade or

Wafer/Die Thickness

W01 = 1-Kbit with

Software Write Protection

W02 = 2-Kbit with

Software Write Protection

T = Tape and Reel

Operating Voltage

M = 1.7V to 3.6V

U = Industrial Temperature Range

(-40°C to +85°C)

11 = 11 mil Wafer Sale Thickness

Package Option

ST

= SOT23

U

= 2 x 2 Grid Array, WLCSP

WW = Wafer Sale

A T 24C SW 020- ST UMxx- T

Hardware Client Address

0 = A

1 = A

2 = A

3 = A

4 = A

5 = A

6 = A

7 = A

Product Variation

xx = Applies to select packages only

0B = Backside Coated WLCSP

Examples

Device

Package

Package

Drawing

Code

Package

Option

Shipping Carrier

Option

Device Grade

AT24CSW010‑STUM‑T

SOT23

4U-13

ST

Tape and Reel

Industrial Temperature

(-40°C to 85°C)

AT24CSW020‑STUM‑T

SOT23

4U-13

ST

Tape and Reel

AT24CSW010‑UUM0B‑T

WLCSP

4U-13

U

Tape and Reel

AT24CSW020‑UUM0B‑T

WLCSP

4U-13

U

Tape and Reel

Microchip Devices Code Protection Feature

Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specifications contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is secure when used in the intended manner and under normal

conditions.

• There are dishonest and possibly illegal methods being used in attempts to breach the code protection features

of the Microchip devices. We believe that these methods require using the Microchip products in a manner

outside the operating specifications contained in Microchip’s Data Sheets. Attempts to breach these code

protection features, most likely, cannot be accomplished without violating Microchip’s intellectual property rights.

• Microchip is willing to work with any customer who is concerned about the integrity of its code.

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of its code. Code

protection does not mean that we are guaranteeing the product is “unbreakable.” Code protection is constantly

evolving. We at Microchip are committed to continuously improving the code protection features of our products.

Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act.

AT24CSW01X/AT24CSW02X

and its subsidiaries

Datasheet

DS20006396B-page 38