1
Features
• Write Protect Pin for Hardware Data Protection
– Utilizes Different Array Protection Compared to the AT24C02/04/08
• Low Voltage and Standard Voltage Operation
– 5.0 (V
CC
= 4.5V to 5.5V)
– 2.7 (V
CC
= 2.7V to 5.5V)
– 2.5 (V
CC
= 2.5V to 5.5V)
– 1.8 (V
CC
= 1.8V to 5.5V)
• Internally Organized 256 x 8 (2K), 512 x 8 (4K) or 1024 x 8 (8K)
• 2-Wire Serial Interface
• Schmitt Trigger, Filtered Inputs for Noise Supperssion
• Bidirectional Data Transfer Protocol
• 100 kHz (1.8V, 2.5V, 2.7V) and 400 kHz (5V) Compatibility
• 8-Byte Page (2K), 16-Byte Page (4K, 8K) 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
– ESD Protection: >3000V
• Automotive Grade and Extended Temperature Devices Available
• 8-Pin and 14-Pin JEDEC SOIC, 8-Pin PDIP, and 8-Pin TSSOP Packages
Description
The AT24C02A/04A/08A provides 2048/4096/8192 bits of serial electrically erasable
and programmable read only memory (EEPROM) organized as 256/512/1024 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
AT24C02A/04A/08A is available in space saving 8-pin PDIP, 8-pin, 14-pin SOIC, and
8-pin TSSOP 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.
2-Wire Serial
EEPROM
2K (256 x 8)
4K (512 x 8)
8K (1024 x 8)
AT24C02A
AT24C04A
AT24C08A
Rev. 0976B–07/98
Pin Configurations
Pin Name Function
A
0
to A
2
Address Inputs
SDA Serial Data
SCL Serial Clock Input
WP Write Protect
NC No Connect
14-Pin SOIC
8-Pin PDIP
8-Pin SOIC
AT24C02A/04A/
08A
8-Pin TSSOP