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Article 利用DS9490R读取我们的电池信息（DS2775电量计）时，无法建立连接，什么原因造成的？

DS2775的第12引脚OVD用于设置1-Wire的通信速度，该引脚接地使1-Wire速度置于标准通信速率模式，即可建立与DS9490R的正常通信。

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