Serial Peripheral Interface Functional Safety Verification

A new technical paper titled “FMEDA based Fault Injection to Validate Safety Architecture of SPI” has been released by researchers from RV College of Engineering in India and Analog Devices.

Summary
“The integration of advanced technologies in electric vehicles (EVs) has increased lately, so it has become crucial to assess the risk of the technologies deployed in them. Functional safety is something that is needed in automobiles to ensure the safety of human lives.Battery Management System (BMS) chip is one such important component of electric vehicle which uses Serial Peripheral Interface (SPI) as a peripheral to communicate with external ICs to to monitor the state of the battery used in an electric vehicle To obtain this functional safety certification of the chip, each block of the chip must have a safety architecture surrounding it and a verification of the functional safety must be carried out This document performs fault injection based on Failure Mode Effects and Diagnostic Analysis (FMEDA) to validate the architecture. SPI safety cture as recommended by ISO 26262. 97.2% diagnostic coverage is achieved for point faults in the SPI block, making it sufficient to achieve Single Point Fault Metric (SPFM) of 99 % for the entire chip.

Find the technical document in free access here. Published in July 2022.

Citation: Vinod Sai E, Praneeth Uddagiri, Namita Palecha, 2022, FMEDA based Fault Injection to Validate Safety Architecture of SPI, INTERNATIONAL JOURNAL OF ENGINEERING RESEARCH & TECHNOLOGY (IJERT) Volume 11, Issue 07 (July 2022). Attribution 4.0 International (CC BY 4.0).

Related reading
Battery management becomes competitive for electric vehicles
Increased density, new materials and longer lifespans are at the top of the list to improve range and reduce costs.
Automotive Outlook: 2022
Near-term IC supply chain issues and long-term architectural and business changes top the list of what lies ahead.
Scalability: A Looming Issue in Security Analytics
A reuse-centric methodology for generating FMEDA.
Hardware architecture ISO-26262