Question on crystal selection: parallel vs series cut

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  1. - 15th March 2010, 11:32 #1
    J. Mark Wolf's Avatar
    J. Mark Wolf
    J. Mark Wolf is offline Junior Member
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    Quote Originally Posted by khufumen View Post
    Upon reading the specs of the 18F1320 PIC that I'm using, it says I need a parallel cut crystal. When I go on Digikey, I see lots of crystals such as the HC49/US but I don't see any mention of the crytals being parallel cut. I'm planning on using an 8Mhz crystal. I'd use the internal oscillator but the PIC is going to be outside in fluctuating temperatures. In any event, should I just assume an 8Mhz HC49/US crystal from digikey is a parallel cut crystal?
    Hoping you can point me in the right direction.
    Eric
    This is why I gave up on crystals years ago, in favor of oscillators and resonators.
  2. - 15th March 2010, 12:13 #2
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    Ioannis
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    Quote Originally Posted by J. Mark Wolf View Post
    This is why I gave up on crystals years ago, in favor of oscillators and resonators.
    It not as bad as Melanie showed

    And relatively to Resonators even with not precisely selected capacitors, the accuracy is much better.

    Ioannis
    www.signalcom.gr
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