Atmel Electronic Components Datasheet

AT24CS08 Datasheet

(AT24CS04 / AT24CS08) EEPROM

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Atmel AT24CS04 and AT24CS08

I2C-Compatible (2-wire) Serial EEPROM with a

Unique, Factory Programmed 128-bit Serial Number

4-Kbit (512 x 8), 8-Kbit (1024 x 8)

PRELIMINARY DATASHEET

Standard Features

 Low-voltage operation

 VCC = 1.7V to 5.5V

 Internally organized as 512 x 8 (4-Kbit) or 1024 x 8 (8-Kbit)

 I2C-compatible (2-wire) serial interface

 Schmitt Trigger, filtered inputs for noise suppression

 Bidirectional data transfer protocol

 400kHz (1.7V) and 1MHz (2.5V, 2.7, 5.0V) compatibility

 Write Protect pin for hardware data protection

 16-byte page write mode

 Partial page writes allowed

 Self-timed write cycle (5ms max)

 High-reliability

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 Endurance: 1,000,000 write cycles

 Data retention: 100 years

 Green package options (Pb/Halide-free/RoHS-compliant)

 8-lead JEDEC SOIC, 8-lead TSSOP, 8-pad UDFN, and 5-lead SOT23

 Die sale options: wafer form and tape and reel available

Enhanced Features in the CS Serial EEPROM Series

 All standard features supported

 128-bit unique factory-programmed serial number

 Permanently locked, read-only value

 Stored in a separate memory area

 Guaranteed unique across entire CS Series of Serial EEPROMs

8766A–SEEPR–6/12

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Atmel Electronic Components Datasheet

AT24CS08 Datasheet

(AT24CS04 / AT24CS08) EEPROM

No Preview Available !

1. Description

The Atmel® AT24CS04 and AT24CS08 provides 4096/8192 bits of Serial Electrically Erasable and Programmable

Read-only Memory (EEPROM) organized as 512/1024 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 AT24CS04/08 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 operate from 1.7V to 5.5V VCC.

The AT24CS04/08 provides the additional feature of a factory programmed, guaranteed unique 128-bit serial number,

while maintaining all of the traditional features available in the 4-Kbit or 8-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 4-Kbit or 8-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 Pinout

Figure 2-1. Pin Configuration

Pin Name

SDA

SCL

GND

VCC

Function

No Connect

Address Input (4K only)

Address Input

Serial Data

Serial Clock Input

Write Protect

Ground

Power Supply

A1/NC

GND

8-lead SOIC

VCC

SCL

SDA

8-lead TSSOP

A1/NC

GND

8 VCC

7 WP

6 SCL

5 SDA

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8-pad UDFN

VCC 8

WP 7

SCL 6

SDA 5

1 NC

2 A1/NC

3 A2

4 GND

Bottom View

5-lead SOT23

SCL 1

5 WP

GND 2

SDA 3

4 VCC

Note:

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.

Atmel AT24CS04/08 [PRELIMINARY DATASHEET]

8766A–SEEPR–6/12

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AT24CS08 Datasheet

(AT24CS04 / AT24CS08) EEPROM

AT24CS08 Datasheet

(AT24CS04 / AT24CS08) EEPROM

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