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  2. Automatic test pattern generation - Wikipedia

    en.wikipedia.org/wiki/Automatic_test_pattern...

    ATPG (acronym for both automatic test pattern generation and automatic test pattern generator) is an electronic design automation method or technology used to find an input (or test) sequence that, when applied to a digital circuit, enables automatic test equipment to distinguish between the correct circuit behavior and the faulty circuit behavior caused by defects.

  3. FAN algorithm - Wikipedia

    en.wikipedia.org/wiki/FAN_algorithm

    FAN algorithm is an algorithm for automatic test pattern generation (ATPG). It was invented in 1983 by Hideo Fujiwara and Takeshi Shimono at the Department of Electronic Engineering, Osaka University, Japan. [1] It was the fastest ATPG algorithm at that time and was subsequently adopted by industry.

  4. Test compression - Wikipedia

    en.wikipedia.org/wiki/Test_compression

    Test compression is a technique used to reduce the time and cost of testing integrated circuits.The first ICs were tested with test vectors created by hand. It proved very difficult to get good coverage of potential faults, so Design for testability (DFT) based on scan and automatic test pattern generation (ATPG) were developed to explicitly test each gate and path in a design.

  5. Stuck-at fault - Wikipedia

    en.wikipedia.org/wiki/Stuck-at_fault

    A stuck-at fault is a particular fault model used by fault simulators and automatic test pattern generation (ATPG) tools to mimic a manufacturing defect within an integrated circuit. Individual signals and pins are assumed to be stuck at Logical '1', '0' and 'X'. For example, an input is tied to a logical 1 state during test generation to ...

  6. Design for testing - Wikipedia

    en.wikipedia.org/wiki/Design_for_testing

    The most common method for delivering test data from chip inputs to internal circuits under test (CUTs, for short), and observing their outputs, is called scan-design. In scan-design, registers ( flip-flops or latches) in the design are connected in one or more scan chains , which are used to gain access to internal nodes of the chip.

  7. Scan chain - Wikipedia

    en.wikipedia.org/wiki/Scan_chain

    In a full scan design, automatic test pattern generation (ATPG) is particularly simple. No sequential pattern generation is required - combinatorial tests, which are much easier to generate, will suffice. If you have a combinatorial test, it can be easily applied. Assert scan mode, and set up the desired inputs. De-assert scan mode, and apply ...

  8. Digital pattern generator - Wikipedia

    en.wikipedia.org/wiki/Digital_pattern_generator

    A digital pattern generator is a piece of electronic test equipment or software used to generate digital electronic stimuli. Digital electronics stimuli are a specific kind of electrical waveform varying between two conventional voltages that correspond to two logic states ("low state" and "high state", "0" and "1").

  9. Fault coverage - Wikipedia

    en.wikipedia.org/wiki/Fault_coverage

    A fault coverage test passes when at least a specified percentage of all possible faults can be detected. If it does not pass, at least three options are possible. First, the designer can augment or otherwise improve the vector set, perhaps by using a more effective automatic test pattern generation tool. Second, the circuit may be re-defined ...

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