Defect Description
Software faults can cover a wide range of possible errors such as coding errors of logic devices that can lead to abnormal performance of a system.
Defect Formation Process(s)
Some software faults include
Coding of a programmable logic device (PLD), which allows insufficient reset pulse duration can lead to abnormal LED activity during hard power cycles [1]
Faulty register setting for the initialization of a particular memory interface inside the boot code of a system leads to a system crash within the operating limits of a system [1].
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List of Tests to Precipitate this Defect |
Failure Detection |
Likihood to Precipitate Defect (condition) |
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Cold Step Stress |
• Software faults such as coding errors of PLDs are found to reveal under cold step stress [1][2] |
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Hot Step Stress |
• Software faults such as coding errors lowering temperature operating limits of a system are found to reveal under hot step stress [1] [2] |
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Thermal Shock |
• Software faults that are sensitive to cold and hot step stress can be revealed in thermal shock. |
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Combined Environment |
• Same as thermal shock |
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References
[1] Gray K. A., Paschkewitz J. J. Next generation HALT and HASS: Robust Design of Electronics and Systems. Hoboken: Wiley, 2016.
[2] Silverman M., “Summary of HALT and HASS Results at an Accelerated Reliability Test Center”, Proceedings of Annual Reliability and Maintainability Symposium, pp. 30-36, 1998.
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