AT24C02B(2005) データシートの表示（PDF） - Atmel Corporation
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AT24C02B Datasheet PDF : 20 Pages
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Features
• Low-voltage and Standard-voltage Operation
– 1.8 (VCC = 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 Mini-MAP (MLP 2x3), 5-lead SOT23,
8-lead TSSOP and 8-ball dBGA2 Packages
• Lead-free/Halogen-free
• Die Sales: Wafer Form, Waffle Pack and Bumped Wafers
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 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.
Two-wire
Serial EEPROM
2K (256 x 8)
AT24C02B
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 Mini-MAP (MLP 2x3)
VCC 8 1 A0
WP 7 2 A1
SCL 6 3 A2
SDA 5 4 GND
Bottom View
8-lead TSSOP
A0 1 8 VCC
A1 2 7 WP
A2 3 6 SCL
GND 4 5 SDA
8-ball dBGA2
VCC 8 1 A0
WP 7 2 A1
SCL 6 3 A2
SDA 5 4 GND
Bottom View
8-lead SOIC
A0 1 8 VCC
A1 2
A2 3
7 WP
6 SCL
GND 4 5 SDA
5-lead SOT23
SCL 1
5 WP
GND 2
SDA 3
4 VCC
8-lead PDIP
A0 1
A1 2
8 VCC
7 WP
A2 3 6 SCL
GND 4 5 SDA
5126B–SEEPR–10/05
1
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