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Thread: Application of 3.3V to the VDDC pins

  1. #1
    Beginner Beginner david.molony is on a distinguished road
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    Application of 3.3V to the VDDC pins

    I accidentally spun a PCB with 3.3V on the Vddc pins. When I powered it up, the device drew 200mA (PSU current limited...)

    Is this part now nuked, core melted, or can I do some surgery, bend the pins up, connect a capacitor... just to get me a few weeks ahead, check other things work while I await my respin.

    Facepalm...
    Edit, MCU is XMC4100 64 pin 128k LQFP
    Last edited by david.molony; Dec 10th, 2019 at 02:53 PM.

  2. #2
    Beginner Beginner david.molony is on a distinguished road
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    wow...

    Bent the vddc pins up with a scalpel. Turned it back on... No extra caps or anything... Measured 1.33v on the bent up pins, thought let's get the segger out...

    It seems to be alive?!?Click image for larger version

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