Table of Contents

Features......................................................................................................................................................... 1

Packages........................................................................................................................................................1

1.

Package Types (not to scale)..................................................................................................................4

2.

Pin Descriptions...................................................................................................................................... 5

2.1.

Serial Clock (SCL)........................................................................................................................5

2.2.

Ground......................................................................................................................................... 5

2.3.

Serial Data (SDA).........................................................................................................................5

2.4.

Device Power Supply (VCC)......................................................................................................... 5

2.5.

Write-Protect (WP)....................................................................................................................... 5

3.

Description.............................................................................................................................................. 7

3.1.

System Configuration Using Two-Wire Serial EEPROMs ........................................................... 7

3.2.

Block Diagram.............................................................................................................................. 8

4.

Electrical Characteristics.........................................................................................................................9

4.1.

Absolute Maximum Ratings..........................................................................................................9

4.2.

DC and AC Operating Range.......................................................................................................9

4.3.

DC Characteristics....................................................................................................................... 9

4.4.

AC Characteristics......................................................................................................................10

4.5.

Electrical Specifications..............................................................................................................11

5.

Device Operation and Communication................................................................................................. 13

5.1.

Clock and Data Transition Requirements...................................................................................13

5.2.

Start and Stop Conditions.......................................................................................................... 13

5.3.

Acknowledge and No-Acknowledge...........................................................................................14

5.4.

Standby Mode............................................................................................................................ 14

5.5.

Software Reset...........................................................................................................................14

6.

Memory Organization............................................................................................................................16

6.1.

Device Addressing..................................................................................................................... 16

7.

Write Operations................................................................................................................................... 19

7.1.

Byte Write...................................................................................................................................19

7.2.

Page Write..................................................................................................................................19

7.3.

Acknowledge Polling.................................................................................................................. 20

7.4.

Write Cycle Timing..................................................................................................................... 21

8.

Write Protection.....................................................................................................................................22

8.1.

Hardware Write Protection......................................................................................................... 22

8.2.

Software Write Protection of the EEPROM Array...................................................................... 22

8.3.

Writing to the Write Protection Register..................................................................................... 24

8.4.

Reading the Write Protection Register....................................................................................... 25

9.

Read Operations................................................................................................................................... 26

9.1.

Current Address Read................................................................................................................26

AT24CSW04X/AT24CSW08X

and its subsidiaries

Datasheet

DS20006426B-page 2