Testonica Lab home
home about DefSim description try now! downloads buy now! feedback  
About DefSim
Quick Links

DefSim

An integrated measurement environment for physical defect study in CMOS circuits

New version of DefSim Personal is available!

DefSim is an integrated circuit (IC) and a measurement environment for experimental study of CMOS defects. The central element of the DefSim environment is an educational IC with a large variety of shorts and opens physically inserted into a set of simple digital circuits. The IC is attached to a dedicated measurement box serving as an interface to the computer. The box supports two measurement modes - voltage and IDDQ testing. DefSim Integrated Circuit

With DefSim you can:
  • Experiment with real CMOS defects!
  • Observe the truth table of correct circuit
  • Observe the truth table of defective circuit
  • Obtain defect/fault tables for all specific defects
  • Define test patterns automatically or manually
  • Activate IDDQ and voltage measurements
  • Study behavior of bridging and open faults
  • Study and compare different fault models
DefSim IC Specification
  • 18 different complex cells and small circuits
  • More than 500 different defects implemented
  • Technology AMS CMOS 0.8μm (CYE - 2M/2P)
  • Area 19.90 mm2
  • 62 pins, JLCC68 package
 DefSim Classroom User Interface
There are several DefSim solutions available: DefSim Personal User Interface

  • DefSim Personal – simple but powerful. Personal solution allows to experiment with different aspects of IC testing shortly after connecting DefSim hardware with computer. Ideal for standalone use or for small groups of users.


  • DefSim Classroom – advantage by sharing. Built on a top of modern Web-technologies DefSim Classroom is capable to share single or several hardware devices between multiple users. Best suitable for organizing study process in classrooms, distance e-learning or remote Web-access services.


    • Here we will outline main features of DefSim software:

    DefSim Features ComparisonPersonalClassroom
    Study real CMOS defects OK OK
    Supported platforms Windows + Java SE 5.0 Windows/Linux + Java SE 5.0 + Tomcat 5.x + Postgres SQL 8.x
    Easy all-in-one installation OK
    Can work with multiple DefSim devices simultaneously OK OK
    Capable to share DefSim hardware between multiple users OK
    Remote Web-access interface OK
    User-management system, statistics processing capabilities OK


    Get the latest version of DefSim Personal software here.

    Now you can also try out DefSim Classroom for free at http://www.defsim.com !

    You can always obtain more information on DefSim, by dropping a request to our mailbox: defsim@testonica.com

    Financial support for developing DefSim hardware was provided by the Europoean Union project:  IST 2000-30193 REASON.

    Please follow the link to see the extended credits.