Features
• Low-voltage and Standard-voltage Operation
•
•
•
•
•
•
•
•
•
•
•
•
– 5.0 (VCC = 4.5V to 5.5V)
– 2.7 (VCC = 2.7V to 5.5V)
– 2.5 (VCC = 2.5V to 5.5V)
– 1.8 (VCC = 1.8V to 5.5V)
Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K),
1024 x 8 (8K) or 2048 x 8 (16K)
2-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bi-directional Data Transfer Protocol
100 kHz (1.8V, 2.5V, 2.7V) and 400 kHz (5V) Compatibility
Write Protect Pin for Hardware Data Protection
8-byte Page (1K, 2K), 16-byte Page (4K, 8K, 16K) Write Modes
Partial Page Writes are Allowed
Self-timed Write Cycle (10 ms max)
High-reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
Automotive Grade and Extended Temperature Devices Available
8-lead JEDEC SOIC, 8-pin PDIP and 8-lead TSSOP Packages
2-wire
Serial EEPROM
1K (128 x 8)
2K (256 x 8)
4K (512 x 8)
8K (1024 x 8)
Description
The AT24C01A/02/04/08/16 provides 1024/2048/4096/8192/16384 bits of serial electrically erasable and programmable read-only memory (EEPROM) organized as
128/256/512/1024/2048 words of 8 bits each. The device is optimized for use in many
industrial and commercial applications where low-power and low-voltage operation
are essential. The AT24C01A/02/04/08/16 is available in space-saving 8-pin PDIP,
(AT24C01A/02/04/08/16), 8-lead TSSOP (AT24C01A/02/04/08/16) and 8-lead
JEDEC SOIC (AT24C01A/02/04/08/16) packages and is accessed via a 2-wire serial
interface. In addition, the entire family is available in 5.0V (4.5V to 5.5V), 2.7V (2.7V to
5.5V), 2.5V (2.5V to 5.5V) and 1.8V (1.8V to 5.5V) versions.
Pin Configurations
Pin Name
Function
A0 - A2
Address Inputs
SDA
Serial Data
SCL
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
Write Protect
NC
A0
A1
A2
GND
AT24C01A
AT24C02
AT24C04
AT24C08
AT24C16
Serial Clock Input
WP
8-lead TSSOP
16K (2048 x 8)
No Connect
8-pin PDIP
A0
A1
A2
GND
1
2
3
4
8
7
6
5
8-lead SOIC
VCC
WP
SCL
SDA
A0
A1
A2
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
Rev. 0180F–06/01
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