W01 OEM broken



  • Hello, we have made some electronic card with W01 OEM, i show you the part wich contain W01:
    Crash_Wipy.jpg

    We havn't any problem with it, but we have get one card wich have crash. We don't know what is become on the card, but the result was the VDD (3.3V) was short circuit to the ground, and two other pins are in the same state: P5 and P10.

    P10 was connected to a pic in output direction. P5 was unconnected (floating pin).

    We don't understand what is become. Do any of you have any idea what happened?

    Thank's for help us to understand or try to understand the reason of this crash.



  • @robert-hh said in W01 OEM broken:

    @thibault google street view Could be cause by some over voltage event. Is the 18LF4431 still intact, or is it broken too? It seems that this device is connected to a motor.

    Thanks very much for that information.



  • @robert-hh effectively the pic drive a motor. And i just made the verification and the PIC is dead. So you will have the answer of our problem, the over voltage was surely the origin of the W01 damage. Thank's for your answer. Have a nice day.



  • @thibault Could be cause by some over voltage event. Is the 18LF4431 still intact, or is it broken too? It seems that this device is connected to a motor.


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