NEC electronics!.can i hear from anyone who works for the electronics company NEC!!! | FerrariChat
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NEC electronics!.can i hear from anyone who works for the electronics company NEC!!!

Discussion in 'Other Off Topic Forum' started by stu.p., Oct 17, 2005.

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  1. stu.p.

    stu.p. Rookie

    Dec 9, 2004
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    central scotland
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    stuart paterson
    #1 stu.p., Oct 17, 2005
    hi,
    i am looking to get in touch with anyone who works for electronics company NEC,I am finding it very hard to purchase an ic chip from this company and hope someone out there could be good enough maybe to try and give me some advice or a helping hand,,,,hope to hear from you's!!!
    cheers!!
    stuart
     
  2. ghost

    ghost F1 World Champ
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    Dec 10, 2003
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    #2 ghost, Oct 17, 2005
    Moved to the appropriate sub-forum.
     
  3. Fastviper

    Fastviper F1 Rookie

    Nov 20, 2003
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    #3 Fastviper, Oct 17, 2005
    What chip are you looking for?
     
  4. stu.p.

    stu.p. Rookie

    Dec 9, 2004
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    stuart paterson
    #4 stu.p., Oct 17, 2005
    the chip is one that goes in my a/c control unit in my 348,,,chip says on it nec japan d78cp14g,,,,i cant seem to purchase it from elcectronis shops and i dont think nec will sell to me direct
     
  5. BWS550

    BWS550 Wants to be a mod

    Apr 1, 2002
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    BRUCE WELLINGTON
    #5 BWS550, Oct 17, 2005
    TRY WWW.DIGIKEY.COM
     
  6. SRT Mike

    SRT Mike Two Time F1 World Champ

    Oct 31, 2003
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    #6 SRT Mike, Oct 17, 2005
    Digkey will not carry that part number.

    It is a specialized microcontroller that seems to be frequently used in HVAC control in cars. The problem, most likely, is that it will need to be sold in bulk to OEM's for inclusioon in manufactured units. NEC is not likely to sell you anything less than a bulk quantity.

    Do a search for the part number. I did and TONS of overstock suppliers carry them. USBid.com is one such that I have used in the past - only problem being they have a $500 minimum order. You should be able to find one who will have a much lower minimum than that, I'll bet.

    The main problem you are going to have is that since its a microcontroller, unless it is pre-programmed from NEC, swapping it out is not going to do anything to solve your problem unless you can also get the software for it and have a programmer for it.

    May I ask what caused you to believe this chip needs replaced? I am doubtful that a chip replacement will do it for a microcontroller since I can't imagine they would come pre-programmed, but I could be wrong!
     
  7. stu.p.

    stu.p. Rookie

    Dec 9, 2004
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    stuart paterson
    #7 stu.p., Oct 17, 2005
    i hoped it would be pre-programmed,,,i know its that that buggered because theres a big crack through the centre of it
     
  8. Artherd

    Artherd F1 Veteran

    Jun 19, 2002
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    #8 Artherd, Oct 17, 2005
    Not damn likely
     
  9. SRT Mike

    SRT Mike Two Time F1 World Champ

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    #9 SRT Mike, Oct 17, 2005
    I found the datasheet for the chip

    http://pdf.alldatasheet.com/datasheet-pdf/view/7115/NEC/UPD78CP14G-36.html

    It has internal ROM, and it is designed to be user-programmed. It does not come pre-programmed, so if you buy one and install, it won't work. Furthermore I doubt that getting one from another vehicle will work either, unless the board it is used on is a standard part across multiple vehicles, which I highly doubt. Its a 64-pin DIP and it has a LOT of multi-purpose lines, so I really don't think it was used in a standard HVAC control.

    Who made the electronics in the car? Bosch? Magenti Marelli? Delco? Your only shot would be to find a vehicle that used the exact same board, and then I would grab the board rather than just the chip, because its highly likely that from one revision to another, software changes would be made that may render two revisions incompatible.

    Sorry I couldnt give you better news.
     

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