common oscillator frequency's

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  • stj
    Great Sage 齊天大聖
    • Dec 2009
    • 30930
    • Albion
    #1

    common oscillator frequency's

    i have been looking at the source for the AVR comonent testers.
    they can generate a squarewave at a number of frequencys.

    all good, but most of the preset ones seem pointless, so i'm looking for idea's for usefull frequency's to replace them with.

    the originals go upto 5Mhz - that may be a limit.

    i'm thinking:
    time bases for mains:
    50Hz
    60Hz
    100Hz
    120Hz

    some ceramic oscillator freq's
    like 455Khz

    and some mcu freq's
    like 1Mhz, 2Mhz, 3.579Mhz and 4Mhz
    Tags: None
    • stj
      Great Sage 齊天大聖
      • Dec 2009
      • 30930
      • Albion
      #2
      Re: common oscillator frequency's

      o.k. - thanks for the input.

      does anybody know any usefull frequency's not on this list?

      --------------------------
      mains freq's
      50hz
      60hz
      100hz
      120hz

      timebase
      32.768khz

      ceramics
      384khz
      400khz
      421khz
      455khz
      460khz
      500khz
      560khz

      crystals
      1mhz
      1.8432mhz
      2mhz
      2.4576mhz
      3.2768mhz
      3.579545mhz
      3.68mhz
      3.6864mhz
      3.69mhz
      3.84mhz
      4mhz
      4.194304mhz
      4.433619mhz
      4.9152mhz
      5mhz
      --------------------------

        Comment

        • mariushm
          Badcaps Legend
          • May 2011
          • 3799
          #3
          Re: common oscillator frequency's

          See https://en.wikipedia.org/wiki/Crysta...or_frequencies

          Lots of those with weird frequencies are still common (like UART baud rate multiples, VGA clocks, Ethernet).

            Comment

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