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AT24C512

2-wire Serial EEPROM 512K (65,536 x 8)

Atmel Corporation 

Features

• Low-voltage and Standard-voltage Operation

– 5.0 (VCC = 4.5V to 5.5V)

– 2.7 (VCC = 2.7V to 5.5V)

– 1.8 (VCC = 1.8V to 3.6V)

• Internally Organized 65,536 x 8

• 2-wire Serial Interface

• Schmitt Triggers, Filtered Inputs for Noise Suppression

• Bidirectional Data Transfer Protocol

• 1 MHz (5V), 400 kHz (2.7V) and 100 kHz (1.8V) Compatibility

• Write Protect Pin for Hardware and Software Data Protection

• 128-byte Page Write Mode (Partial Page Writes Allowed)

• Self-timed Write Cycle (5 ms Typical)

• High Reliability

– Endurance: 100,000 Write Cycles

– Data Retention: 40 Years

– ESD Protection: >4000V

• Automotive Grade and Extended Temperature Devices Available

• 8-pin PDIP and 20-pin JEDEC SOIC, 8-pin LAP, and 8-ball dBGATM Packages

Description

The AT24C512 provides 524,288 bits of serial electrically erasable and programmable

read only memory (EEPROM) organized as 65,536 words of 8 bits each. The device’s

cascadable feature allows up to 4 devices to share a common 2-wire bus. The device

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

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

8-pin PDIP, 20-pin JEDEC SOIC, 8-pin Leadless Array (LAP), and 8-ball dBGA pack-

ages. In addition, the entire family is available in 5.0V (4.5V to 5.5V), 2.7V (2.7V to

5.5V) and 1.8V (1.8V to 3.6V) versions.

Pin Configurations

Pin Name

A0 - A1

SDA

SCL

WP

NC

Function

Address Inputs

Serial Data

Serial Clock Input

Write Protect

No Connect

20-pin SOIC

A0 1

A1 2

NC 3

NC 4

NC 5

NC 6

NC 7

NC 8

NC 9

GND 10

20 VCC

19 WP

18 NC

17 NC

16 NC

15 NC

14 NC

13 NC

12 SCL

11 SDA

8-pin PDIP

A0 1

A1 2

NC 3

GND 4

8 VCC

7 WP

6 SCL

5 SDA

8-pin Leadless Array

VCC 8

WP 7

SCL 6

SDA 5

1 A0

2 A1

3 NC

4 GND

Bottom View

8-ball dBGA

VCC 8

WP 7

SCL 6

SDA 5

1 A0

2 A1

3 NC

4 GND

Bottom View

2-wire Serial

EEPROM

512K (65,536 x 8)

AT24C512

Rev. 1116D–07/00

1

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