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Overclocking — Parallax Forums

Overclocking

InfinityInfinity Posts: 10
edited 2009-06-07 11:55 in Propeller 1
Hello


I want to ask if anybody tried to overclock the propeller, maybe 100, 120 or even 160mhz?

Is the system still stable?

Or even the better Question does anybody tried 10mhz * 16PLL


best regards,
Infinity

Post Edited (Infinity) : 6/6/2009 7:36:41 PM GMT

Comments

  • MicrocontrolledMicrocontrolled Posts: 2,461
    edited 2009-06-06 19:31
    No, I don't believe I ever tryed that.........
    I won't because I don't want to overload my poor Propeller smile.gif

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  • BADHABITBADHABIT Posts: 138
    edited 2009-06-06 19:33
    Go back a page or two. There are a few threads that talk alot about it.

    BH skull.gif
  • Matthew BurmeisterMatthew Burmeister Posts: 49
    edited 2009-06-06 21:29
    refer to this page http://forums.parallax.com/showthread.php?p=812166

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  • InfinityInfinity Posts: 10
    edited 2009-06-06 21:33
    Thanks for your help.

    best regards,
    Infinity
  • Matthew BurmeisterMatthew Burmeister Posts: 49
    edited 2009-06-06 21:35
    Infinity said...
    Thanks for your help.

    best regards,
    Infinity

    No Problem.

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  • Mike GreenMike Green Posts: 23,101
    edited 2009-06-07 00:06
    The Propeller datasheet (downloadable from the Propeller Downloads page) has nice graphs showing the maximum reliable clock speed vs. ambient temperature and supply voltage (page 31). Best speed is around 139MHz with a supply voltage of 3.6V at -55C. It's possible that selected chips may operate beyond this, but I wouldn't build anything expecting a Prop would work at those extremes.
  • Matthew BurmeisterMatthew Burmeister Posts: 49
    edited 2009-06-07 00:11
    Mike Green said...
    The Propeller datasheet (downloadable from the Propeller Downloads page) has nice graphs showing the maximum reliable clock speed vs. ambient temperature and supply voltage (page 31). Best speed is around 139MHz with a supply voltage of 3.6V at -55C. It's possible that selected chips may operate beyond this, but I wouldn't build anything expecting a Prop would work at those extremes.

    Wow... never knew the prop could operate that fast, but -55c is a bit cold for me xD

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    Disclaimer: I cannot guarantee any information i post is accurate, but most of the time, it is correct.
    Misses 8 bit computing
  • InfinityInfinity Posts: 10
    edited 2009-06-07 07:58
    @Mike Green
    On which side is this graph?

    best regards,
    Mike
  • LeonLeon Posts: 7,620
    edited 2009-06-07 11:55
    A few chips were running for one minute under those test conditions. For reliable operation the specification conditions in the Electrical Characteristics section should be observed - 80 MHz operation at -55C to 125C. Hobbyists often run devices outside their published specification, but no experienced designer would do it with something that is going into production.

    Leon

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    Post Edited (Leon) : 6/7/2009 12:00:39 PM GMT
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