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Atmel Electronic Components Datasheet



AT24C02B

2-Wire Automotive Temperature Serial EEPROM


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AT24C02B pdf
NOT RECOMMENDED
FOR NEW DESIGNS
Replaced by
AT24C01C,
AT24C02C,
AT24C04C,
or AT24C08C
AT24C01B, AT24C02B
AT24C04B, AT24C08B
2-Wire Automotive Temperature Serial EEPROM
1K (128 x 8), 2K (256 x 8), 4K (512 x 8), or 8K (1,024 x 8)
Features
DATASHEET
Medium-voltage and Standard-voltage Operation
̶ 2.5V (VCC = 2.5V to 5.5V)
Automotive Temperature Range –40C to 125C
Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K), or 1,024 x 8 (8K)
2-Wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bidirectional Data Transfer Protocol
400kHz (2.5V) Compatibility
Write Protect Pin for Hardware Data Protection
8-byte Page (1K, 2K) or 16-byte Page (4K, 8K) Write Modes
Partial Page Writes are Allowed
Self-timed Write Cycle (5ms max)
High-reliability
̶ Endurance: 1,000,000 Write Cycles
̶ Data Retention: 100 Years
8-lead JEDEC SOIC and 8-lead TSSOP Packages
Description
The AT24C01B/02B/04B/08B Automotive provides 1,024/2,048/4,096/8,192 bits
of Serial Electrically Erasable and Programmable Read-only Memory (EEPROM)
organized as 128/256/512/1,024 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 AT24C01B/02B/04B/08B Automotive is available in space-
saving 8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via a
2-wire serial interface. In addition, the entire family operates at voltages from 2.5V
to 5.5V.
Atmel-8517D-SEEPROM-AT24C01B-02B-04B-08B-Auto-Datasheet_082014



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AT24C02B pdf
1. Pin Configurations and Pinouts
Table 1-1. Pin Configurations
Pin Name
A0 A2
GND
SDA
SCL
WP
VCC
Function
Address Inputs
Ground
Serial Data
Serial Clock Input
Write Protect
Power Supply
8-lead SOIC
(Top View)
A0
A1
A2
GND
1
2
3
4
8 VCC
7 WP
6 SCL
5 SDA
A0
A1
A2
GND
8-lead TSSOP
(Top View)
18
27
36
45
VCC
WP
SCL
SDA
Note: Drawings are not to scale.
2. Absolute Maximum Ratings*
Operating Temperature  55C to +125C
Storage Temperature . . . . . . . . . . . . . . . . ..65C to +150C
Voltage on Any Pin
with Respect to Ground 1.0V to +7.0V
Maximum Operating Voltage . . . . . . . . . . . . . . . . . . . . 6.25V
DC Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
*Notice: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent
damage to the device. This is a stress rating
only and functional operation of the device at
these or any other conditions beyond those
indicated in the operational sections of this
specification is not implied. Exposure to
absolute maximum rating conditions for
extended periods may affect device reliability.
3. Block Diagram
Figure 3-1. Block Diagram
VCC
GND
WP
SCL
SDA
A2
A1
A0
Start
Stop
Logic
LOAD
Device
Address
Comparator
R/W
Serial
Control
Logic
COMP
LOAD INC
Data Word
ADDR/Counter
EN H.V. Pump/Timing
Data Recovery
EEPROM
DIN
DOUT
Y DEC
Serial MUX
DOUT/ACK
Logic
2 AT24C01B/02B/04B/08B Automotive [DATASHEET]
Atmel-8517D-SEEPROM-AT24C01B-02B-04B-08B-Auto-Datasheet_082014



Part Number AT24C02B
Description 2-Wire Automotive Temperature Serial EEPROM
Maker ATMEL Corporation - ATMEL Corporation
Total Page 18 Pages
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