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AVR crystal frequencies

Discussion in 'SimTools compatible interfaces' started by Bruceaust, Feb 24, 2012.

  1. Bruceaust

    Bruceaust Member

    Joined:
    Sep 2, 2011
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    Occupation:
    CNC Routing
    Location:
    Launceston, Tasmania, Australia
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    My Motion Simulator:
    2DOF
    Just a quick question.
    Tried to program the AVR via pony prog. Got the dreaded device missing or unknown device (-24)
    I am using an 8535 16 PU and had a 24mhz crystal installed. I have now read the data sheet :blush: and it states that it clocks at 16mhz.

    So am I right is assuming that it will only work on a 16mhz crystal?

    (This is the my first go at using the 8535 so it has been a learning experience with this chip)
    Bruceaust, Feb 24, 2012
    #1
  2. kbssa

    kbssa New Member

    Joined:
    Jun 29, 2011
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    Brazil
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    kbssa, Mar 7, 2012
    #2
  3. Bruceaust

    Bruceaust Member

    Joined:
    Sep 2, 2011
    Messages:
    73
    Occupation:
    CNC Routing
    Location:
    Launceston, Tasmania, Australia
    Balance:
    63Coins
    Ratings:
    +11 / 0 / -0
    My Motion Simulator:
    2DOF
    Thanks, kbssa
    Yes i have tried all xtals. the problem is it is not even recognising the chip using the internal clock.
    Just about ot buy another data cable! - see if that works.
    Bruceaust, Mar 7, 2012
    #3