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 
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 
 
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