Features
• Write Protect Pin for Hardware Data Protection
– Utilizes Different Array Protection Compared to the AT24C02/04/08/16
• Low-voltage and Standard-voltage Operation
– 2.7 (VCC = 2.7V to 5.5V)
– 1.8 (VCC = 1.8V to 5.5V)
• Internally Organized 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) Clock Rate for AT24C02A, 04A and 08A
• 100 kHz (1.8V) and 400 kHz (2.5V, 2.7V and 5V) Clock Rate for AT24C16A
• 8-byte Page (2K), 16-byte Page (4K, 8K, 16K) Write Modes
• Partial Page Writes are Allowed
2-wire Serial
EEPROM
2K (256 x 8)
• Self-timed Write Cycle (10 ms max)
• High Reliability
– Endurance: One Million Write Cycles
– Data Retention: 100 Years
• Automotive Grade and Extended Temperature Devices Available
• 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP and 8-lead TSSOP Packages
4K (512 x 8)
8K (1024 x 8)
16K (2048 x 8)
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
industrial and commercial 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, 8-lead MAP and 8-lead TSSOP packages and is accessed via a 2-
wire serial interface. In addition, the entire family is available in 2.7V (2.7V to 5.5V)
and 1.8V (1.8V to 5.5V) versions.
AT24C02A
AT24C04A
AT24C08A
AT24C16A
Pin Configurations
8-lead PDIP
Pin Name
A0 - A2
SDA
Function
A0
A1
1
2
3
4
8
7
6
5
VCC
WP
Address Inputs
Serial Data
A2
SCL
SDA
GND
SCL
Serial Clock Input
Write Protect
No-connect
WP
8-lead SOIC
NC
A0
A1
A2
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
GND
8-lead MAP
8-lead TSSOP
VCC 8
WP 7
1 A0
2 A1
A0
1
2
3
4
8
7
6
5
VCC
SCL 6
SDA 5
3 A2
A1
A2
WP
4 GND
SCL
SDA
GND
Bottom View
Rev. 0976G–SEEPR–11/02
1