PIC18F4850 will not oscillate

[prstein]

Is "Options|Update Configuration From File" checked? It shouldn't be.

Best Regards,
Paul

[IRQ_Diode]

I read the configuration back from the PIC and it reads the correct settings for the oscillator

I have open a ticket with Microchip and contacted melabs to see if they have another idea on how to get this solved. I have tried two different oscillators.

Has anyone used a PIC18F4580 that could let me know what oscillator they used (actual part number)?

[Bruce]

Add this to your config settings just below your _CONFIG2H line;
__CONFIG _CONFIG2L, _PWRT_ON_2L & _BOREN_BOHW_2L & _BORV_3_2L

This should give it more time for the oscillator to start up.

[IRQ_Diode]

Bruce,

I did try your suggestion and added the line:

__CONFIG _CONFIG2L, _PWRT_ON_2L & _BOREN_BOHW_2L & _BORV_3_2L

The programmer read the configurations bits correctly, but the PIC still will not oscillate. I also went and checked the caps just to make sure that they were not resistors, and well they were not.

I am considering that it could be the actual part number of the crystal itself. The only thing I have not tried is to place a series resistor to one side of the oscillator. I would have to cut the trace and make sure that I do not short anything to the ground pour around the oscillator.

So before I do that, is there anything else someone can think of? Microchip is taking its time to respond, and I need to send the gerber files to the manufacturer soon.

Thanks,

IRQ

[Bruce]

Can you upload the compiled .HEX file you're programming into this part in .ZIP file?

[IRQ_Diode]

I have uploaded and below for refrence

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:020000040030CA
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:00000001FF

Thank you for looking into this

[mackrackit]

You do still do not have the OSC set for HS