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problem with pic programmer and 18f1320

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Telfo2002

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Hi,
I'm using a JDM serial programmer variant (TE-20 model) for programming a 18f1320. Other pic chips are well programmed but this one not. I suspect reason could be a low MCLR voltage (between 12 and 12,30V on this programmer).

Some ideas for programming that chip using this programmer? How to increase voltage to 13V just using serial port signals?

Thanks in advance.
 

I had a similar problem geting the program voltage high enough. I tried taking anything off the program line and trying diferant values for the electrolitic/tant capacitors. Make sure that all your component values are correct and that the board is wired properly.

Barrybear
 

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