Failed programmer?


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  1. #1
    Join Date
    Jan 2006
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    New Hampshire, USA
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    Default Failed programmer?

    I am using 12F675, I checked before programming that the clock was running and the chip drew only the normal microamps. After programming, the chip drags down my 3 amp power supply and gets very hot. Erasing the program does not help. How does one program a 12F675 to be a short circuit? My programmer is melabs U2. Has it failed again (this is my second one)? My test circuit is just power and ground and pin 4 (reset) grounded.

  2. #2
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    Apr 2007
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    Default Re: Failed programmer?

    When you programmed your PIC, did it pass code verification? Sounds like your PIC is fried, perhaps a defective PIC. I would try to program another one before blaiming the programmer.
    Shawn

  3. #3
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    Default Re: Failed programmer?

    Hi, Russ

    the chip drags down my 3 amp power supply and gets very hot
    any short on your PCB ??? or did you ever invert the supply polarities ???

    even placing the chip in the wrong way on its socket doesn't draw so much current ...

    Alain
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  4. #4
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    Default Re: Failed programmer?

    Quote Originally Posted by spcw1234 View Post
    When you programmed your PIC, did it pass code verification? Sounds like your PIC is fried, perhaps a defective PIC. I would try to program another one before blaiming the programmer.
    I programmed two before checking that the 3rd one was good before programming.

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