AT24CS01/02 [DATASHEET]

Atmel-8815D-SEEPROM-AT24CS01-02-Datasheet_082014

2

1.

Description

Programmable Read-only Memory (EEPROM) organized as 128/256 words of eight bits each. The device is

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

are essential. The AT24CS01/02 is available in space-saving, 8-lead JEDEC SOIC, 8-lead TSSOP, 8-pad

UDFN and 5-lead SOT23 packages and is accessed via a 2-wire serial interface. In addition, both devices fully

The AT24CS01/02 provides the additional feature of a factory programmed, guaranteed unique 128-bit serial

number, while maintaining all of the traditional features available in the 1-Kbit or 2-Kbit Serial EEPROM. The

time consuming step of performing and ensuring true serialization of product on a manufacturing line can be

removed from the production flow by employing the CS Series Serial EEPROM. The 128-bit serial number is

programmed and permanently locked from future writing during the Atmel production process. Further, this

128-bit location does not consume any of the user read/write area of the 1-Kbit or 2-Kbit Serial EEPROM. The

uniqueness of the serial number is guaranteed across the entire CS Series of Serial EEPROMs, regardless of

the size of the memory array or the type of interface protocol. This means that as an application's needs for

memory size or interface protocol evolve in future generations, any previously deployed serial number from any

Atmel CS Series Serial EEPROM part will remain valid.

2.

Pin Descriptions and Pinouts

Figure 2-1.

Pin Configuration

Notes: 1.

For use of 5-lead SOT23, the software A2, A1, and A0 bits in the device address word must be set to

zero to properly communicate with the device.

2.

Drawings are not to scale.

Pin Name

Function

Address Inputs

SDA

Serial Data

SCL

Serial Clock Input

WP

Write Protect

GND

Ground

Power Supply

1

2

3

4

GND

8

7

6

5

WP

SCL

SDA

8-pad UDFN

(Top View)

8-lead TSSOP

(Top View)

1

2

3

4

8

7

6

5

GND

WP

SCL

SDA

1

2

3

4

GND

8

7

6

5

WP

SCL

SDA

8-lead SOIC

(Top View)

5-lead SOT23

(Top View)

SCL

GND

SDA

WP

1

2

3

5

4