Management of RAM Fault for Safety Applications
Published January 9, 2019 by SAE International in United States
Downloadable datasets for this paper availableAnnotation of this paper is available
As safety compliance (ISO 26262) has become a norm for automotive embedded software development, the OEMs and Tier1 are pushed to follow the safety guidelines during hardware, software development process. This demands the microcontroller to not only detect internal faults but also find the exact root cause of the failure and have a self-healing mechanism. This paper presents proposed fault detection, injection, testing and shows comparison of microcontroller fault handling with respect to ISO26262 safety standard between proposed method and traditional method by giving the example of RAM test. Also gives an overview of software implementation of this concept as per AUTOSAR standard.
CitationGanapathi, A., "Management of RAM Fault for Safety Applications," SAE Technical Paper 2019-26-0365, 2019, https://doi.org/10.4271/2019-26-0365.
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- AUTOSAR_SWS_RAMTest.pdf, Document Identification No. 0760, AUTOSAR Release 4.0.2.
- Datasheet of AURIX Infineon Microcontroller, tc27xB_um_v1.4.1.
- ISO 26262-5:2011, Published: 2011-12-16, Road Vehicles - Functional Safety -Part 5: Product Development at the Hardware Level.
- ISO 26262-9:2011, Published: 2011-12-16, Functional Safety - Part 9: Automotive Safety Integrity Level (ASIL)-Oriented and Safety-Oriented Analyses.
- ISO 26262-10:2012, Published: 2012-09-27, Functional Safety - Part 10: Guideline on ISO 26262.