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F28069 XRS脚一直是低电平,是什么原因?



申请了一片28069 ,上电后,XRS脚一直是低电平。

直接个4.7K的上拉到XRS ,还是低电平!

怎么条件下会出现这个状况?

还是芯片坏了?

谢谢