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Atmel Electronic Components Datasheet



AT24C64B

I2C-Compatible (2-Wire) Serial EEPROM



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AT24C64B pdf
AT24C64B
I2C-Compatible (2-Wire) Serial EEPROM
64K (8192 x 8)
DATASHEET
Features
Low-voltage and Standard-voltage Operation
̶ 2.7V (VCC = 2.7V to 5.5V)
̶ 1.8V (VCC = 1.8V to 5.5V)
Low-power Devices (ISB = 6μA at 5.5V) Available
Internally Organized 8192 x 8
2-Wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bi-directional Data Transfer Protocol
400kHz Clock Rate
Write Protect Pin for Hardware Data Protection
32-byte Page Write Mode (Partial Page Writes Allowed)
Self-Timed Write Cycle (5ms max)
High Reliability
̶ Endurance: 1,000,000 Write Cycles
̶ Data Retention: 100 Years
Lead-free/Halogen-free Devices Available
8-lead JEDEC SOIC and TSSOP Packages
Die Sales: Wafer Form, Waffle Pack, and Bumped Wafers
Description
The Atmel® AT24C64B provides 65,536 bits of Serial Electrically Erasable and
Programmable Read-Only Memory (EEPROM) organized as 8,192 words of 8 bits
each. The device’s cascadable feature allows up to eight 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 AT24C64B 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 is available in 2.7V (2.7 to 5.5V) and 1.8V (1.8 to 5.5V) versions.
Atmel-3350F-SEEPROM-AT24C64B-Datasheet_052014



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AT24C64B pdf
1. Pin Configurations
Table 1-1. Pin Configurations
Pin Name
A0 – A2
GND
SCL
SDA
WP
VCC
Function
Address Inputs
Ground
Serial Clock Input
Serial Data
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
2. Absolute Maximum Ratings*
Operating Temperature . . . . . . . . . . . . .-55 to +125C
Storage Temperature . . . . . . . . . . . . . . .-65 to +150°C
Voltage on Any Pin
with Respect to Ground . . . . . . . . . . . . . . . -1V to +7V
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.
2 AT24C64B [DATASHEET]
Atmel-3350F-SEEPROM-AT24C64B-Datasheet_052014



Part Number AT24C64B
Description I2C-Compatible (2-Wire) Serial EEPROM
Maker ATMEL Corporation - ATMEL Corporation
Total Page 19 Pages
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