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  4. » Is EF6809EP same as M6809EP?
(Topic ID: 143065)

Is EF6809EP same as M6809EP?

By NJGecko

8 years ago



Topic Stats

  • 3 posts
  • 3 Pinsiders participating
  • Latest reply 8 years ago by Riptor
  • No one calls this topic a favorite

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    #1 8 years ago
    OP
     
    GMT

    NJGecko

    Pinside member

    US River Edge, NJ

    11y 93,400 8,004 5 13

    I've got a board with a suspect EF6809EP. I've got some M6809EP's on hand. Compatible replacement?

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    #2 8 years ago
     
    M D

    maddog14

    Pinside member

    12y 74,650 3,298 11

    http://www.cpu-world.com/CPUs/6809/index.html

    I would vote yes. Just different brand. E according to article above is external clock input.

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    #3 8 years ago
     
    ???

    Riptor

    Inactive member

    US Leonardtown, MD

    8y 33,900 317 15

    Yes they are the same. Like mentioned, the letter E is important when replacing a 6809. There are also different speeds. 6809, 68A09 and 68B09. 68B09 is the fastest. You can use faster but cant go down in speed. If in doubt check the schematics and see what is supposed to be in there.
    The prefix is the mfg. EF is usually ST and MC is usually Motorola but can sometimes be National.

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