16F628 and LMX2306 PLL loading.. help

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  1. - 24th May 2008, 09:44 #1
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    Quote Originally Posted by skimask View Post
    16F628...not 16F628A... doesn't apply in this case...well, mostly doesn't apply.
    Not sure what YOU mean Jeremy, I meant 5=mclr 6= osc/clkout, 7= osc/clkin, if he is using xtal or resonator, or wrong configs then ports will not work. Is there a pullup resistor on a.5? Is there a .1 µf cap between pins 5 and 14 ? Sometimes it helps to erase the chip several times prior to programming too.
    Last edited by Archangel; - 24th May 2008 at 10:37.
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  2. - 24th May 2008, 09:46 #2
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    Quote Originally Posted by Joe S. View Post
    Not sure what YOU mean Jeremy
    Ok, I thought that you might have been thinking analog vs. digital pins.
    F628 has comparators but no ADC, F628A has both...
    I've shot myself in the foot more than once by forgetting that sort of thing
  3. - 24th May 2008, 09:55 #3
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    Quote Originally Posted by skimask View Post
    F628 has comparators but no ADC, F628A has both...
    I don't see ADC just VREF I never used ADCON on the 628A I know there are differences in the 628 vs 628A, I never actually used the non-A version, I have the feeling his chip is not doing anything, for the above stated reasons.
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  4. - 11th June 2008, 17:13 #4
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    OK it's working!

    Had to play with configuration settings, turned off WDT and everything that I did not need. Also added a bypass capacitor between pins 5 and 14.

    Sorry this took so long as I had gone on vacation for a week and have been otherwise tied up.

    Thanks for all your help and input!
  5. - 11th June 2008, 18:03 #5
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    GREAT ! Good to see success ! Thanks for the follow up.
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