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Atmel Electronic Components Datasheet



AT24C1024B

Two-wire Serial EEPROM


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AT24C1024B pdf
Features
Low-voltage Operation
– 1.8V (VCC = 1.8V to 3.6V)
– 2.5V (VCC = 2.5V to 5.5V)
Internally Organized 131,072 x 8
Two-wire Serial Interface
Schmitt Triggers, Filtered Inputs for Noise Suppression
Bidirectional Data Transfer Protocol
400 kHz (1.8V) and 1 MHz (5V, 2.5V) Clock Rate
Write Protect Pin for Hardware and Software Data Protection
256-byte Page Write Mode (Partial Page Writes Allowed)
Random and Sequential Read Modes
Self-timed Write Cycle (5 ms Typical)
High Reliability
– Endurance: 1,000,000 Write Cycles/Page
– Data Retention: 40 Years
8-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead TSSOP, 8-lead Ultra Thin
Small Array (SAP), and 8-ball dBGA2 Packages
Die Sales: Wafer Form, Tape and Reel and Bumped Die
Description
The AT24C1024B provides 1,048,576 bits of serial electrically erasable and program-
mable read only memory (EEPROM) organized as 131,072 words of 8 bits each. The
device’s cascadable feature allows up to four devices to share a common two-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-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead TSSOP,
8-ball dBGA2 and 8-lead Ultra Thin SAP packages. In addition, the entire family is
available in 1.8V (1.8V to 3.6V) and 2.5V (2.5V to 5.5V) versions.
8-lead PDIP
8-lead SOIC
NC
A1
A2
GND
1
2
3
4
8 VCC
7 WP
6 SCL
5 SDA
8-lead dBGA2
VCC
WP
SCL
SDA
8
7
6
5
1 NC
2 A1
3 A2
4 GND
Bottom View
NC
A1
A2
GND
1
2
3
4
8 VCC
7 WP
6 SCL
5 SDA
8-lead TSSOP
NC
A1
A2
GND
1
2
3
4
8 VCC
7 WP
6 SCL
5 SDA
8-lead Ultra-Thin SAP
VCC
WP
SCL
SDA
8
7
6
5
1 NC
2 A1
3 A2
4 GND
Bottom View
Two-wire Serial
EEPROM
1M (131,072 x 8)
AT24C1024B
with Two Device
Address Inputs
NOT RECOMMENDED
FOR NEW DESIGNS
Replaced by AT24CM01
Rev. 5194F–SEEPR–1/08



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AT24C1024B pdf
Table 0-1.
Pin Name
A1
A2
SDA
SCL
WP
NC
Pin Configurations
Function
Address Input
Address Input
Serial Data
Serial Clock Input
Write Protect
No Connect
1. 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........................................................ 5.0 mA
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age 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 AT24C1024B
5194F–SEEPR–1/08



Part Number AT24C1024B
Description Two-wire Serial EEPROM
Maker ATMEL Corporation - ATMEL Corporation
Total Page 25 Pages
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AT24C1024 Two-wire Serial EEPROM AT24C1024
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