microcontroller NEC how does it work?

Discussion in 'Embedded Systems and Microcontrollers' started by Sirol, Nov 24, 2017.

microcontroller NEC

  1. the operation is this ...

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  2. I think it can not work alone ..

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  1. Sirol

    Thread Starter New Member

    Nov 1, 2017
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    Hi, i have a question to do, I have a microcontroller that is called NEC japan d75p108bcw9250ku002 and i would use it, but i don't know how to program it, and how does it work...
     
  2. qrb14143

    Member

    Mar 6, 2017
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    If you are new to microcontrollers I would suggest learning on one of the big names like Arduino, MSP430, Atmega32 etc. You will find there are a great deal of example projects and support available for these products.
     
  3. be80be

    AAC Fanatic!

    Jul 5, 2008
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    You may as well forget programming that google don't give one hit on that part number
     
  4. Papabravo

    Expert

    Feb 24, 2006
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    AFAIK NEC is completely out of the microprocessor business.
     
  5. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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    Likely proprietary and not programmable by the general public. Save yourself and enormous headache and but something well supported like the Arduino. And if you wan to build it all yourself the Mircochip Pic is very well supported.
     
  6. Sirol

    Thread Starter New Member

    Nov 1, 2017
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    Capisco, grazie comunque per l'aiuto

    I understand, thank you anyway for the help

    Moderators note: This is an english only forum, I translated the quote
     
    Last edited by a moderator: Nov 25, 2017
  7. JohnInTX

    Moderator

    Jun 26, 2012
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    That's because the NEC part number is 75p108. BCW is the package. 9250 is the date code. KU002 is manufacturer's supplementary data - which fab built it etc. The μ prefix says NEC microcircuits. Googling NEC 75p108 gets lots of hits including the datasheet. It is a 4 bit microcontroller in a 64pin SDIP package. One time programmable so totally unsuited for @Sirol so yes, good advice to look elsewhere.
     
    absf likes this.
  8. absf

    Senior Member

    Dec 29, 2010
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    I also have a uPD78218A which is similar to 75108 but it was an 8-bit controller. It was used in Yamaha PSR310 keyboard.

    It came in 2 favours. One with 32K bytes OTP-ROM and 1KB RAM. The other one came in 0K ROM and 1K RAM. This one uses external eprom for its program. I have both of them.

    I never really made good use of them besides as a part for repairing the music keyboards, because the programming environment is hard to get and I have to learn a new asm language which was very time consuming.

    If I didn't guess wrongly, the 75108 was used in calculators and simple appliances control.

    Anyway here are the datasheet if you're really interested..

    Allen
     
    Sirol likes this.
  9. Sirol

    Thread Starter New Member

    Nov 1, 2017
    22
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    Thanks for the pdf, and for the answer
     
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