在使用bq40z50r1,看手册说明是检测高到低的电平变化,请问具体过程是怎样的???是要让该引脚一直保持高电平,然后要进入的时候给1s的低电平???;还是说该引脚一直保持高电平,然后要进入的时候给1s的低电平,然后再拉高???还是要先该引脚一直保持低电平,然后要进入的时候先给高电平,然后再给1s的低电平???
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