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52pin SX -> PDIP — Parallax Forums

52pin SX -> PDIP

steveorcasteveorca Posts: 1
edited 2005-01-20 23:32 in General Discussion
I would like to purchase 100 dies of 52pin SX microcontroller, and package them in PDIP format.

Can anyone help me to achieve this.

Also I know some company which provide 50 MHz crystal in PDIP format. any company could you suggest.

Thank you in advance

Comments

  • BeanBean Posts: 8,129
    edited 2005-01-20 12:12
    Why not just use the SX52 Con Carne ?

    http://www.parallax.com/detail.asp?product_id=45207

    Bean.
  • StephenStephen Posts: 53
    edited 2005-01-20 17:45
    BTW, you'll never fit it in a 0.300" DIP package. Scenix/Ubicom did this analysis a long time ago. A 0.600" DIP would be doable, but it was never viable for Scenix/Ubicom to do... For a man of unlimited resources, no problem! tongue.gif
  • Paul BakerPaul Baker Posts: 6,351
    edited 2005-01-20 17:49
    At $47.20 (volume discount for 100 SX52 con carnes), $472 may be more than he's looking to spend. My only suggestion for a cheaper solution is to get a pcb manufacturer to make them for you, you can pack multiple dips on one board and cut them afterwards and install PC pins. If your looking for DIP clock sources, I suggest getting TTL oscillators, full cans fit a 14-pin dip and half cans fit an 8-pin dip, they only use the 4 corner pins, special IC sockets which only have these pins are availible and are sometimes cheaper since they have fewer pc pins.

    Paul

    BTW the con carnes have space on the dip to install a half can TTL oscillator, saving some board real estate (it also reduces signal reflection issues by reducing the trace length and it being (pin, trace, pin) putting the oscillator off the SX52 Dip changes it to (pin, trace, pin, trace, pin) which makes 2 reflection sources. Look halfway down the page of http://www.interfacebus.com/Design_Termination.html·for a discussion on this.


    Nate is right, its over $4K
    |·|· |
    V·V V

    Post Edited (Paul Baker) : 1/20/2005 11:53:20 PM GMT
  • NateNate Posts: 154
    edited 2005-01-20 22:55
    $47.20 x 100 = $4,720.· I'd give the pcb route a serious look considering the ~$4,000 you could save.

    nate
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2005-01-20 23:32
    Let's not forget the SX52 Con Carne is really meant as a development tool...It makes it easier to prototype and develop around the QFP package...In production you would design a Volume Production PCB to mount it on.· You will find that the cost of making your own PCB to do the same thing won't save you much, if any.· PCBs aren't cheap to be made in that quality.



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