1

2

3

5

4

SCL

GND

SDA

WP

VCC

1

2

3

4

8

7

6

5

A0

A1

A2

GND

VCC

WP

SCL

SDA

1

2

3

4

8

7

6

5

VCC

WP

SCL

SDA

A0

A1

A2

GND

VCC

WP

SCL

SDA

A0

A1

A2

GND

1

2

3

4

8

7

6

5

1

2

3

4

8

7

6

5

A0

A1

A2

GND

VCC

WP

SCL

SDA

1

2

3

4

8

7

6

5

A0

A1

A2

GND

VCC

WP

SCL

SDA

8-lead SOIC

8-ball dBGA2

8-lead Ultra Thin Mini-MAP (MLP 2x3)

8-lead PDIP

5-lead SOT23

Bottom View

Bottom View

8-lead TSSOP

Features

– Endurance: 1 Million Write Cycles

– Data Retention: 100 Years

8-lead TSSOP and 8-ball dBGA2 Packages

Description

The AT24C01B provides 1024 bits of serial electrically erasable and programmable

read-only memory (EEPROM) organized as 128 words of 8 bits each. The device is

optimized for use in many industrial and commercial applications where low-power

and low-voltage operation are essential. The AT24C01B is available in space-saving

SOT23, 8-lead TSSOP, and 8-ball dBGA2 packages and is accessed via a Two-wire

serial interface. In addition, the AT24C01B is available in 1.8V (1.8V to 5.5V) version.

Table 0-1.

Pin Configuration

Pin Name

Function

A0 - A2

Address Inputs

SDA

Serial Data

SCL

Serial Clock Input

WP

Write Protect

GND

Ground

VCC

Power Supply

Two-wire

Serial EEPROM

1K (128 x 8)

AT24C01B

5156E–SEEPR–10/08