what does n.c means in this IC?

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Discussion in 'General Electronics Chat' started by cczone, Dec 19, 2008.

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  1. Dec 19, 2008 #1
    cczone

    Thread Starter Member

    Dec 17, 2008
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    Hi, might need to ask what is the meaning of n.c here? Not connected?
    Pin 7 here is basically write protect input.
    [​IMG]
     
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  2. Dec 19, 2008 #2
    garry.owens

    Member

    Dec 17, 2008
    17
    0
    nc on a chip usually means not connected
     
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  3. Dec 19, 2008 #3
    SgtWookie

    Expert

    Jul 17, 2007
    22,199
    1,783
    Yes, no connection.

    That particular IC has a pull-down on the write protect pin to enable writes by default.
    If you want to disable writes, pull that pin high.
    http://www.pira.cz/pdf/24xx256.pdf
     
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  4. Dec 19, 2008 #4
    cczone

    Thread Starter Member

    Dec 17, 2008
    23
    0
    Thanks guys. Got it :)
     
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  5. Dec 19, 2008 #5
    KL7AJ

    AAC Fanatic!

    Nov 4, 2008
    2,152
    389
    It means the chip is made in North Carolina. :)
     
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  6. Dec 19, 2008 #6
    Audioguru

    Expert

    Dec 20, 2007
    10,008
    1,074
    The only chips made in North Carolina are the potato kind.:p
     
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  7. Dec 19, 2008 #7
    beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    290
    For an IC pin, NC will be "no connection". For a switch or relay contact, NC means "normally closed".
     
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