1
Features
Low-voltage and Standard-voltage Operation
– 5.0 (V
CC = 4.5V to 5.5V)
– 2.7 (V
CC = 2.7V 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 (2.7V) and 400 kHz (5V) Compatibility
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: 100,000 Write Cycles
– Data Retention: 100 Years
– ESD Protection: >3000V
Description
The AT24C01A/02SC/04SC/08SC/16SC 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 devices are optimized
for use in smart card applications where low-power and low-voltage operation may be
essential. The devices are available in several standard ISO 7816 smart card modules
(see Ordering Information). The entire family is available in both high-voltage (4.5V to
5.5V) and low-voltage (2.7V to 5.5V) versions. All devices are functionally equivalent
to Atmel serial EEPROM products offered in standard IC packages (PDIP, SOIC,
EIAJ, LAP), with the exception of the slave address and Write Protect functions, which
are not required for smart card applications.
Pin Configurations
Card Module Contact
Pad Name
Description
ISO Module Contact
VCC
Power Supply Voltage
C1
GND
Ground
C5
SCL
Serial Clock Input
C3
SDA
Serial Data Input/Output
C7
NC
No Connect
C2, C4, C6, C8
NC
VCC
2-wire Serial
EEPROM Smart
Card Modules
1K (128 x 8)
2K (256 x 8)
4K (512 x 8)
8K (1024 x 8)
16K (2048 x 8)
AT24C01ASC
AT24C02SC
AT24C04SC
AT24C08SC
AT24C16SC
Rev. 1610A–05/00