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怎样降低电源电压与 IO的压降而产生的功耗。

Other Parts Discussed in Thread: MSP430G2553

msp430g2553用P10的ADC功能检测电池电压,两个电阻串联分压。
现在的问题是,电池的电压经过电阻流向P10,造成功耗的增加。
怎么样通过配置IO,使不检测电压的时候,能防止电池与IO口之间产生的压降而产生的功耗。