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CPU mount

Discussion in 'General Electronics Discussion' started by overture3d, Sep 28, 2012.

  1. overture3d

    overture3d

    22
    0
    Sep 28, 2012
    Is there a way to buy a board to mount a CPU on for prototyping, or would I have to have a custom board made?

    If so, where could I get a surface mount board printed cheap?
     
  2. CocaCola

    CocaCola

    3,635
    4
    Apr 7, 2012
    Yes, there are a lot of smd breakout boards available... What chip package, pin count, pitch etc?
     
  3. overture3d

    overture3d

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    0
    Sep 28, 2012
    It is a ZiLOG Z84, 44 pin CPU.
     
  4. CocaCola

    CocaCola

    3,635
    4
    Apr 7, 2012
    Still need the other info I asked about...

    Package type? Leg Pitch? Package size?
     
  5. Raven Luni

    Raven Luni

    798
    7
    Oct 15, 2011
    I assume you mean the Z84C which is the modern version of the Z80A. Given that the DIP versions are all 40 pin I assume youre referring to one of the surface mount or BGA packages?
     
  6. overture3d

    overture3d

    22
    0
    Sep 28, 2012
    Yeah, I have the surface mount Z84C. I don't know all of the specifications yet because I am still looking for the datasheet.
     
  7. CocaCola

    CocaCola

    3,635
    4
    Apr 7, 2012
    From a quick Google search it appears there are two surface mount versions, what one do you have?

    The LQFP or PLCC?
     
  8. overture3d

    overture3d

    22
    0
    Sep 28, 2012
    I have no idea. the full code on the chip is Z84C0008FEC Z80 CPU 9937 E8.

    Thanks for the help btw.
     
  9. CocaCola

    CocaCola

    3,635
    4
    Apr 7, 2012
    Google LQFP or PLCC packages and compare it to what you have in your hand... You have to help us if you want us to attempt to help you...
     
  10. overture3d

    overture3d

    22
    0
    Sep 28, 2012
    Ok, sorry. I am havn't done this before so I am still learning. When I google LQFP it looks like the chip I have so I am pretty sure that is what I have. The PLCC chips don't look like it.
     
  11. CocaCola

    CocaCola

    3,635
    4
    Apr 7, 2012
    OK so we need a 44 pin LQFP break out board...

    NOTE THESE BREAKOUT BOARDS ARE FOR 44 TQFP, they SHOULD work with your chip but without verification of the package size and pitch they might not...

    There is one on Ebay

    http://www.ebay.com/itm/4x-TQFP-44-...283?pt=LH_DefaultDomain_0&hash=item19cfff5bc3

    This one

    https://www.sparkfun.com/products/8879

    Or this one pull down to the 44 TQFP, don't confuse it with the 48 LQFP that won't work in your case...

    http://www.futurlec.com/SMD_Adapters.shtml

    Or Google '44 TQFP to DIP' or '44 TQFP breakout' and pick one of many other companies that make breakout boards... But, do note that these are all for standard TQFP and although they should work with your chip... I personally don't have verification that ZoLOG stuck to the same pitch and package size on your particular chip, sometimes companies pull a fast one and make a proprietary modification to the chip layout for whatever reason...

    BTW in another thread you asked about soldering a CPU, if this is the chip in question it's a lot easier... This chip can be soldered with an iron carefully, or just a heat gun... No need for fancy stuff if you are only doing one or two...
     
    Last edited: Sep 28, 2012
  12. overture3d

    overture3d

    22
    0
    Sep 28, 2012
    Great! That was a lot of help. I'll see if one of those boards work.
     
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