TTL input - 3rd states possible?

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  1. - 28th March 2007, 23:16 #10
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    flotulopex
    flotulopex is offline Senior Member
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    Default My code

    <img src="http://www.picbasic.co.uk/forum/attachment.php?attachmentid=1504&stc=1&d=117511986 5">

    I'm not sure about the ANSEL register. Shall I stay DIGITAL or ANALOG?

    I tried both but I get always the same result.

    I found this in the data-sheet; it's about the TTL levels.<img src="http://www.picbasic.co.uk/forum/attachment.php?attachmentid=1505&stc=1&d=117512006 5">

    As far as I can understand, the LOW level will be between Vss and 0,15V and the HIGH level between 2V and Vdd.

    Is this correct?
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    Roger
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