USB VBUS Power

2 thoughts on “USB VBUS Power

  1. Hello, I’m using your HE910 module and was wondering if the device can handle voltage coming in on the USB VBUS input while not having any power on the VBATT_PA and VBATT input pins.  Does having this scenario adversely bias the module in any way?

     

    Thanks.

     

    Al 

    1. In order to avoid a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the HE910 when the module is powered off or during an ON/OFF transition