Features
• Low-voltage and Standard-voltage Operation
•
•
•
•
•
•
•
•
•
•
•
•
•
– 2.7 (VCC = 2.7V 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)
Two-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bidirectional Data Transfer Protocol
100 kHz (1.8V) and 400 kHz (2.7V, 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 Allowed
Self-timed Write Cycle (5 ms max)
High-reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
Automotive Devices Available
8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3), 5-lead
SOT23, 8-lead TSSOP and 8-ball dBGA2 Packages
Die Sales: Wafer Form, Waffle Pack and Bumped Wafers
Two-wire
Serial EEPROM
1K (128 x 8)
2K (256 x 8)
4K (512 x 8)
8K (1024 x 8)
Description
The AT24C01A/02/04/08A/16A 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/02/04/08A/16A is available in space-saving 8-lead
PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3) , 5-lead SOT23
(AT24C01A/AT24C02/AT24C04), 8-lead TSSOP, and 8-ball dBGA2 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) and 1.8V (1.8V to 5.5V) versions.
8-lead TSSOP
Table 1. Pin Configuration
Pin Name
Function
A0 - A2
Address Inputs
SDA
Serial Data
SCL
Serial Clock Input
WP
Write Protect
NC
No Connect
GND
Ground
VCC
Power Supply
8-lead SOIC
A0
A1
A2
GND
8
7
6
5
1
2
3
4
VCC
WP
SCL
SDA
8-ball dBGA2
VCC
WP
SCL
SDA
8
2
6
3
5
A0
A1
A2
GND
1
7
4
Bottom View
A0
A1
A2
GND
1
2
3
4
8
7
6
5
8
7
6
5
VCC
WP
SCL
SDA
8-lead Ultra Thin Mini-MAP
(MLP 2x3)
VCC
WP
SCL
SDA
8
7
6
5
1
2
3
4
A0
A1
A2
GND
Bottom View
5-lead SOT23
8-lead PDIP
A0
A1
A2
GND
1
2
3
4
VCC
WP
SCL
SDA
SCL
1
GND
3
VCC
Notes:
1. Not Recommended for
new design; Please
refer to AT24C01B
datasheet.
2. Not Recommended for
new design; Please
refer to AT24C02B
datasheet.
3. Not Recommended for
new design; Please
refer to AT24C16B
datasheet
WP
4
AT24C01A(1)
AT24C02(2)
AT24C04
AT24C08A
AT24C16A(3)
2
SDA
5
16K (2048 x 8)
0180Z1–SEEPR–5/07
1
