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Altera_Forum's avatar
Altera_Forum
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15 years ago

capacitive switch using maxII

Hello,

has anybody tried to make this like it's decscibed in the EDN article ?

edn-europe.com/capacitivetouchswitchusescpld+article+2250+europe.html

How do I insert that Schmitt trigger symbol ? Is the touch sensor a normal input pin or bidirectional ? What's the symbol above the schmitt trigger , a tri-buffer ?

thanks

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    --- Quote Start ---

    How do I insert that Schmitt trigger symbol

    --- Quote End ---

    Don't need to select a symbol, it's a specific I/O standard with MAX II

    --- Quote Start ---

    Is the touch sensor a normal input pin or bidirectional

    --- Quote End ---

    Obviously bidirectional

    --- Quote Start ---

    a tri-buffer ?

    --- Quote End ---

    Yes