18f452 Problems

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  1. - 25th October 2005, 12:46 #1
    mglazer's Avatar
    mglazer Guest

    Unhappy 18f452 Problems

    Hi, I have been using the 16f84a no problems at all now I've upgraded to the 18f452 and cannot even get a LED to flash. I have searched the forums and made sure the OSC setting are correct and set to HS for a 20mhz resonator.

    I have been trying for the last 6 hours with no luck and tried another pic just incase the one I had was a dud. I've attached a very crude circuit diagram incase I have done something wrong. I have also tried a crystal in place of the resonator.

    Thank you for any help that you can give.
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