PIC24F and PICkit2

Discussion in 'Embedded Systems and Microcontrollers' started by Vaughanabe13, Apr 29, 2010.

  1. Vaughanabe13

    Thread Starter Active Member

    May 4, 2009
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    Can you program a 24F chip with a PICkit2? The PK2 puts ~12V on the MCLR line, and apparently the 24F chips have a low voltage tolerance on the pins. Does this mean a PK2 will destroy the chip during a write? If so, is there any protection circuit that can guard the MCLR pin of the PIC from the high voltage and still allow programming?

    I'm asking because ICD2's are expensive and I'd much rather use my PK2 if possible. Thanks for the help!
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
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  3. BMorse

    Senior Member

    Sep 26, 2009
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    You can set the maximum VDD applied to uc through property settings of the pickit2...

    [​IMG]

    B. Morse
     
  4. Vaughanabe13

    Thread Starter Active Member

    May 4, 2009
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    Yes, I've already read the documentation and I am aware which chips are supposedly supported by PK2. If you lower the voltage applied to the chip how does it enter programming mode? I thought it required a large voltage on MCLR to enable programming? Does that not apply to the 24F line then?
     
  5. t06afre

    AAC Fanatic!

    May 11, 2009
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    The PICKIT2 is a programmer/debugger is manufactured by Microchip. It is not some DIY homemade programmer. If your 24F series PIC is in the list. You can use the PICKIT2 to program/debug the chip. That is the main advantage with the cheap (but very cool) PICKIT2 and 3. So do not worry, used correct the PICKIT will not harm the chip.
     
  6. maxpower097

    Well-Known Member

    Feb 20, 2009
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    Works fine, I'm using the PK2 / PIC24fXXX010 combo right now.
     
  7. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
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    Yep the PICkit2 has clamp transistors to keep the PGC,PGD near target VDD.
     
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