SX20AC/SS aftermarket source

I've been keeping the Stache BASIC Stamp programmer alive for a handful of customers. It was originally built around the SX20AC/SS, but that is long out of production. There's hoarder's inventory out there, and I have quotations mostly from China that range from $16 to $78 (!!) per chip in quantities from 20 to 100. To keep it alive, I've started refactoring the circuit around an SX48, which Parallax still has at $0.78 each, but it is a pita to have to redo the pcb layout and to tweak the firmware. I thought I'd ask if any of you forumistas has or knows of a warm source for SX20s?


Comments

  • 13 Comments sorted by Date Added Votes
  • We might have some at Parallax, Tracy. Send me an e-mail and I'll have Chantal check the secret stache, so to speak.

    Thanks,

    Ken Gracey
  • I've been cleaning out my desk this past week and found a bunch of SX stuff I'm never going to use. You are welcome to it.

    2 sx keys, 1 serial and 1 usb.
    1 sx28ac/dp
    3 sx48 proto boards
    1 sx tech board
    and... da da da daaaaaaa.....
    1 tube of sx28ac/ss chips... somewhere around 45 maybe 47...

    -Dave.
  • Oh! great. pm's will be sent!
  • Tracy,
    I think I have some SX20AC/SS around. I will look and let you know. Maybe 20 or so...

    Bean
    logo.png?91518163160380889
    Esterline Research & Design
    thitt@esterlineresearch.com

    We offer consulting on the following areas of expertise:
    Frequency Control - Micro-Controller/Processor Projects
    Test and Automation - General Programming and Coding
    Circuit Design - Board Layouts
  • Bean to the rescue! Where have you been?
    Infernal Machine
  • Hi Bean, good to hear from you!
    Please pm me if you locate some chips. It turned out that Parallax had none at all. Lots of SX48s but no SX20s. I can also use SX18. That was the very first layout and I still have the Gerbers.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    Too bad you couldn't easily adapt the SX48 to fit into a SX20 slot. I had a customer who was desparate for SX28s and actually found some, but they were knock-offs and failed their testing. They were through-hole though, so I hooked them up with a board that converts the SX48 QFP to an SX28 DIP layout and they were able to wrap a final build of their product before moving to something else like an Atmel chip for the future.
    Chris Savage | Engineering Tech | Main Office: (916) 624-8333 | Direct to Tech Support: (888) 997-8267 | Website | Twitter | Google+
  • Tracy,

    Since you mentioned SX18's, I have

    5 ea. Ubicom SX18AC-I/SO, datecode AB0116AP (SOIC), and
    6 ea. Scenix SX18AC75/DPES, datecode AB9931AB (DIP).

    Any and all are yours if you want them. Just PM or email me your mailing address.

    -Phil
    “Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away. -Antoine de Saint-Exupery
  • Tracy,
    This must be your lucky day. Not that I have the parts....But that I was able to find them.... ;)

    I have 33 of them that are marked:
    PARALLAX
    SX20AC/SS-G
    0751

    I assume 0751 is the date code of 51st week of 2007.

    Anyway, they are yours if you want them (and I assume you do).

    Send me a PM with your mailing address and I sent them to you.

    Bean
    logo.png?91518163160380889
    Esterline Research & Design
    thitt@esterlineresearch.com

    We offer consulting on the following areas of expertise:
    Frequency Control - Micro-Controller/Processor Projects
    Test and Automation - General Programming and Coding
    Circuit Design - Board Layouts
  • Wow! Indeed a lucky day! pm sent. The SX turbos on.


  • They are on the way Tracy.

    PM sent.

    Happy to help out forum members.

    Bean
    logo.png?91518163160380889
    Esterline Research & Design
    thitt@esterlineresearch.com

    We offer consulting on the following areas of expertise:
    Frequency Control - Micro-Controller/Processor Projects
    Test and Automation - General Programming and Coding
    Circuit Design - Board Layouts
  • Thanks much Bean. There is no doubt in my mind that you have helped out this community and many of us individually.
  • Thanks, Bean and Bullopene, I have enough now to keep the Stache alave for a while!
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