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TMS320F28335: How to identify the broken device

Joe Ji
Expert 3780 points
Part Number: TMS320F28335

Tool/software:

Hi Expert 

The devices are broken because customer connected GPIO18(Pin62) and GPIO19(Pin63) to 5V by accident in their assembly line. they want to identify the broken devices and replace them with a new one.

Want to confirm with BU, whether the Pin resistor to VDD and VSS measurement (normal pin >1kOhm, broken pin ~20Ohm) can 100% identify this kind of issue? If not, is there any other methods to identify the broken devices?

Thanks

Joe 

  • +1
    TI__Genius 17371 points

    Hi Joe,

    Is there a thermocamera used at any point in the fabrication/assembly process? Usually if the device has been damaged, there may be abnormal current draw which causes the device to heat up more than normal. You can try to power the board and wait specified number of time for the device to startup then measure the temperature of the IC. You can do this in combination with measuring the resistance across the VDD and VSS. I think utilizing both methods can help to diagnose which devices are affected.

    Regards,

    Peter