Features
• Write Protect Pin for Hardware Data Protection
– Utilizes Different Array Protection Compared to the AT24C02/04/08/16
Medium-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 256 x 8 (2K), 512 x 8 (4K), 1024 x 8 (8K) or 2048 x 8 (16K)
Two-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bidirectional Data Transfer Protocol
400 kHz (2.7V, 5V) Clock Rate
8-byte Page (2K), 16-byte Page (4K, 8K, 16K) Write Modes
Partial Page Writes Allowed
Self-timed Write Cycle (5 ms Max)
High Reliability
– Endurance: One Million Write Cycles
– Data Retention: 100 Years
Automotive Grade, Extended Temperature, and Lead-Free/Halogen-Free
Devices Available
8-lead PDIP, 8-lead JEDEC SOIC, and 8-lead TSSOP Packages
Description
The AT24C02A/04A/08A/16A provides 2048/4096/8192/16384 bits of serial electri-
cally erasable and programmable read-only memory (EEPROM) organized as
256/512/1024/2048 words of 8 bits each. The device is optimized for use in many
Two-wire Serial
EEPROM
Extended
Temperature
2K (256 x 8)
4K (512 x 8)
8K (1024 x 8)
16K (2048 x 8)
AT24C02A
AT24C04A
AT24C08A
AT24C16A
5083A–SEEPR–9/04
automotive applications where low-power and low-voltage operation are essential.
The AT24C02A/04A/08A/16A is available in space-saving 8-lead PDIP, 8-lead JEDEC
SOIC, and 8-lead TSSOP packages and is accessed via a two-wire serial interface. In
addition, the entire family is available in 2.7V (2.7V to 5.5V) version.
Table 1. Pin Configurations
Pin Name Function
A0–A2 Address Inputs
SDA Serial Data
SCL Serial Clock Input
WP Write Protect
NC No-connect
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
SCL
SDA
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
SCL
SDA
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
SCL
SDA
8-lead PDIP
8-lead SOIC
8-lead TSSOP
1