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How to build IC tester with board? — Parallax Forums

How to build IC tester with board?

sakibmoonsakibmoon Posts: 5
edited 2011-09-24 07:06 in Robotics
I want to make a IC tester. This would help me to check 14-16 pin general ICs.

I am new to this. A step by step help would be great.

Comments

  • sakibmoonsakibmoon Posts: 5
    edited 2011-09-20 15:36
    If it is hard to test 2 types of pin, I would love to design it for 14 pin ICs. My main interest is to test these ICs.

    > NAND gate
    > NOR gate
    > AND gate
    > OR gate
    > NOT gate
    > Ex-OR gate
    > JK flip-flop
    > D flip flop
    > BCD to 7 segment decoder

    and other similar 14 pin ICs.
  • RobotWorkshopRobotWorkshop Posts: 2,307
    edited 2011-09-20 20:41
    This link may give you some ideas. Shouldn't be too hard to make something using the Propeller as the brain.

    http://www.scribd.com/doc/51640138/digital-ic-tester-ppt
  • sakibmoonsakibmoon Posts: 5
    edited 2011-09-21 00:22
    Thanks a lot. This is the best one with detailed instruction. But the problem is with the microcontroller. In our local store I couldn't find AT89s52. What are the best alternative for this project?
  • RobotWorkshopRobotWorkshop Posts: 2,307
    edited 2011-09-21 08:01
    If I were building this I would probably use the Parallax Propeller processor (DIP version) and use the notes at the link above asa general guide. You'll need to write your own code but you should be able to code the whole thing in SPIN easily. It would be an excellent project for the Propeller. Instead of a small LCD you could use a composite or VGA display with everything run from the Propeller.

    Robert
  • Beau SchwabeBeau Schwabe Posts: 6,559
    edited 2011-09-21 08:32
    sakibmoon,

    Welcome to the Forum!!


    This thread might be of some interest and give you an idea...

    http://forums.parallax.com/showthread.php?134326-IC-Characterization-Conceptual-DEMO&p=1033612#post1033612
  • alex123alex123 Posts: 102
    edited 2011-09-24 07:06
    What do you really want to test? Do you want to test the parts functionally (check if they perform the correct logical operations) or test their 'analog' performance (VinH/VinL, VoutH/VoutL, propagation delay etc). The latter will be more complex and would require ADCs and DACs.
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