Features
•
Low-voltage and Standard-voltage Operation
•
•
•
•
•
•
•
•
•
•
– 1.8 (V
CC
= 1.8V to 5.5V)
Internally Organized 256 x 8 (2K)
Two-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bidirectional Data Transfer Protocol
1 MHz (5V), 400 kHz (1.8V, 2.5V, 2.7V) Compatibility
Write Protect Pin for Hardware Data Protection
8-byte Page (2K) Write Modes
Partial Page Writes Allowed
Self-timed Write Cycle (5 ms max)
High-reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
8-lead PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3), 5-lead SOT23,
8-lead TSSOP and 8-ball dBGA2 Packages
Lead-free/Halogen-free
Available in Automotive
Die Sales: Wafer Form and Tape and Reel
Two-wire
Serial EEPROM
2K (256 x 8)
•
•
•
•
AT24C02B
Not
Recommended
for New Design
Description
The AT24C02B provides 2048 bits of serial electrically erasable and programmable
read-only memory (EEPROM) organized as 256 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 AT24C02B is available in space-saving
8-lead PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3)
,
5-lead
SOT23, 8-lead TSSOP, and 8-ball dBGA2 packages and is accessed via a Two-wire
serial interface. In addition, the AT24C02B is available in 1.8V (1.8V to 5.5V) version.
Table 0-1.
Pin Name
A0 - A2
SDA
SCL
WP
GND
VCC
Pin Configuration
Function
Address Inputs
Serial Data
Serial Clock Input
Write Protect
Ground
Power Supply
8-lead Ultra-Thin
Mini-MAP (MLP 2x3)
VCC
WP
SCL
SDA
8
7
6
5
1
2
3
4
A0
A1
A2
GND
8-ball dBGA2
VCC
WP
SCL
SDA
8
7
6
5
1
A0
2
A1
3
A2
4
GND
Bottom View
8-lead TSSOP
A0
A1
A2
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
A0
A1
A2
GND
Bottom View
8-lead SOIC
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
Note:
For use of 5-lead SOT23, the
software A2, A1, and A0 bits in
5-lead SOT23
the device address word
WP
1
5
must be set to zero to prop-
SCL
erly communicate.
GND
2
SDA
3
4
VCC
8-lead PDIP
A0
A1
A2
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
5126H–SEEPR–8/07
ATMEL [ ATMEL CORPORATION ]
