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External Crystal

parskoparsko Posts: 501
edited 2006-04-24 16:40 in Propeller 1
Hello all,

Been brewing my own board. I purchased a "standard" crystal, 5.000MHz. But, can't verify if it will work. Making matters worse is that I can't find a datasheet. I have read consistantly about the XTAL crystal specifically. The one I have looks like a standard one, but the one's in the misc pictures shows a smaller style.

I will first start by asking:

Is the prop sensitive to specific external crytals?

-Parsko

Comments

  • Tracy AllenTracy Allen Posts: 6,656
    edited 2006-04-23 20:23
    My guess is that it is not sensitive. It would be harder to make it _not_ oscillate. The _accuracy_ of the oscillation will depend on matching the load capacitance.

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    Tracy Allen
    www.emesystems.com
  • parskoparsko Posts: 501
    edited 2006-04-24 06:42
    So, would you gander that any 5MHz crystal will work?

    -Parsko
  • JavalinJavalin Posts: 892
    edited 2006-04-24 09:00
    Have a look at this thread:

    http://forums.parallax.com/forums/default.aspx?f=25&m=118638
  • JavalinJavalin Posts: 892
    edited 2006-04-24 09:00
    Have a look at this thread:

    http://forums.parallax.com/forums/default.aspx?f=25&m=118638
  • parskoparsko Posts: 501
    edited 2006-04-24 12:45
    Javalin,

    I asked again because:

    a) searched and couldn't find said post
    b) remembered reading said post a while back and still not knowing if what I had would work.

    The guy said it was a "standard" 5Mhz crystal. If he had said this is a "standard" cap screw, I would have known what he said, as I am a mechanical engineer and know what a "standard" cap screw is. BUT, not sure what a "standard" crystal is. [noparse]:)[/noparse] [noparse]:)[/noparse]

    Sorry if this is repetetive.

    -Parsko
  • cgraceycgracey Posts: 14,133
    edited 2006-04-24 14:57
    The 5.000MHz crystal we've been using at Parallax is ECS-50-20-4, or Digi-Key part number X410-ND.

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    Chip Gracey
    Parallax, Inc.
  • JavalinJavalin Posts: 892
    edited 2006-04-24 16:40
    no worries.
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