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deedubthedeep
Visitor II
October 13, 2003
Question

ST72C254G2 High speed resonator start up

  • October 13, 2003
  • 2 replies
  • 729 views
Posted on October 13, 2003 at 20:55

ST72C254G2 High speed resonator start up

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    2 replies

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    deedubthedeepAuthor
    Visitor II
    September 29, 2003
    Posted on September 29, 2003 at 06:42

    My 16MHZ Crystal does not always start:

    68pf load caps, no load caps, no difference!.

    When clock filter is enabled and ST7 is running on back up clock, is it possible to kick start HSR circuit with software method or do I have to keep cycling power until it starts!!..

    Eternal thanks to anyone can help.
    P
    peterharris9
    Visitor II
    October 13, 2003
    Posted on October 13, 2003 at 20:55

    Hi Deedub

    I used to use a 2254 with a 16MHz crystal.

    My circuit used 33pf caps.

    It is always worth double checking your option byte settings.

    BM
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