1

Features

– Utilizes Different Array Protection Compared to the AT24C02A/04A

– Endurance: One Million Write Cycles

– Data Retention: 100 Years

Description

The AT24C02A/04A provides 2048/4096 bits of serial electrically erasable and pro-

grammable read-only memory (EEPROM) organized as 256/512 words of 8 bits each.

The device is optimized for use in many automotive applications where low-power and

low-voltage operation are essential. The AT24C02A/04A is available in space-saving

8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via a two-wire

serial interface. In addition, the entire family is available in 2.7V (2.7V to 5.5V) version.

Two-wire

Automotive

Temperature

Serial

EEPROM

2K (256 x 8)

4K (512 x 8)

AT24C02A

AT24C04A

5083C–SEEPR–1/07

Table 1. Pin Configurations

Pin Name

Function

A0–A2

Address Inputs

SDA

Serial Data

SCL

Serial Clock Input

WP

Write Protect

NC

No-connect

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-lead TSSOP