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Journal ArticleDOI

Detecting I/O and Internal Feedback Bridging Faults

TLDR
It is shown that only two test patterns are sufficient to detect feedback bridging faults between input and output lines of a general combinational network.
Abstract
The testing of bridging faults (short circuits) has become increasingly important with the increasing density in VLSI (very large scale integration) chips. Yet very little work has been done in this area. In this correspondence, based on a two-state sequential machine model, we present the conditions for a circuit with feedback bridgings to oscillate and to exhibit stable sequential behavior. It is shown that only two test patterns are sufficient to detect feedback bridging faults between input and output lines of a general combinational network. We derive a simple equation to generate test patterns for detecting feedback bridging faults among internal lines of a general combinational network.

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Citations
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Iddq Testing for CMOS VLSI

R. Rajsuman
TL;DR: Iddq testing has been widely used in the field of semiconductor testing as discussed by the authors and many semiconductor companies now consider Iddq test as an integral part of the overall testing for all IC's.
Proceedings ArticleDOI

An analysis of feedback bridging faults in MOS VLSI

TL;DR: It is shown that when a feedback bridging fault does not cause oscillations, it creates an anomalous output and the authors recommend measurement of power supply current to detect such faults in CMOS circuit.
Proceedings ArticleDOI

Modeling feedback bridging faults with non-zero resistance

TL;DR: The complexity of resistive feedback bridging fault simulation, accurate enough to resolve such situations, will probably be prohibitively high and possible simplifying assumptions are proposed.
Journal ArticleDOI

Modeling Feedback Bridging Faults with Non-Zero Resistance

TL;DR: It is concluded that the complexity of resistive feedback bridging fault simulation accurate enough to resolve such situations will probably be prohibitively high and proposed possible simplifying assumptions are proposed.
Journal ArticleDOI

Test generation for cyclic combinational circuits

TL;DR: This work provides, for the first time, a formal analysis of the test generation problem for cyclic combinational circuits, which leads to a clear insight into generation of tests, as well as a classification of untestable faults for such circuits.
References
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Journal ArticleDOI

Enhancing Testability of Large-Scale Integrated Circuits via Test Points and Additional Logic

TL;DR: With the increasing complexity of logic that can be fabricated on a single large-scale integrated (LSI) circuit chip, there is a growing problem of checking the logical behavior of the chips at manufacture.
Journal ArticleDOI

Bridging and Stuck-At Faults

TL;DR: The commonly used stuck-at fault fails to model logic circuit shorts, so Bridging faults are defined to model these circuit mal-functions.
Journal ArticleDOI

A Practical Approach to Fault Simulation and Test Generation for Bridging Faults

TL;DR: This approach is based on extending fault simulation and test generation for stuck faults to cover bridging faults as well, and shows that adequate bridging fault coverage can be obtained in most cases without using sequences of vectors.
Journal ArticleDOI

Diagnosis of Short-Circuit Faults in Combinational Circuits

TL;DR: This correspondence considers the problems associated with detection of two other fault models, shorted diode and input Bridge faults, both corresponding to shorts.
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