I C Bus Interface; Dc-In Power Connector; Cmos Battery Connector - Lex Computech 2I260A Quick Start Manual

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3-7 I C Bus Interface

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CO1:I C Bus 4pin (1.25mm)Wafer 2
PIN NO. Description
1 +3.3V
2 GND
3 I C CLK 2
2
4 I C DATA
3-8 DC -IN power connector
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CPI1 : DC-in 1x2 (2.0mm)Wafer Internal connector
PIN NO. Description
1 +12V DC-IN
2 GND
Note: Very important check Dc-in Voltage

3-9 CMOS battery connector

BAT1: 3V Battery hold 2pin
BAT1 : Batter use Li 3V / 40mAh (CR1220)
Note : 1.When board without Adaptor plug in, this board power RTC consumption 2.7uA
2.If adaptor always plug in RTC power consumption 0.1uA
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CBT1: 3V Battery 2pin(1.25mm)Wafer (option)
PIN NO. Description
1 CATHODE(-)
2 ANOD(+)
Note : 1. This connector for external 3V Li battery use.
2. CBT1 can work with BAT1 same time.
3. Li battery can use CR2032 type 3V / 220mAh
pin1
CO1
38
CBT1
CPI1