Freescale has summarized its initiatives to support the functional safety needs of the market under the SafeAssure brand. It covers safety support, safety hardware, safety software and a safety process to ensure that procedural aspects are covered adequately during the development phase of the various products. The objective is to reduce the time and complexity required to develop safety systems that comply with ISO 26262 and IEC 61508 standards and to simplify the process of system compliance, with solutions designed to address the requirements of the specific automotive and industrial functional safety standards.
The lead product of the SafeAssure brand is the Qorivva MPC5643L 32-bit MCU that is centered on a dual-core lock-step architecture with error correction coding on RAM and flash memory. A set of dedicated safety measures allows deployment in a variety of functional safety related systems, including electric power steering, active suspension, anti-lock braking systems and radar-based advanced driver assistance systems (ADAS). The MPC5643L is the first microcontroller to achieve a formal ISO 26262 certificate for ASIL D functional safety capability by an independent third-party accredited certification body. It is suitable for use for all automotive safety integrity levels (ASIL), up to and including the most stringent level, ASIL D.
In light of advanced driver assistance systems and the electrified vehicle, in which most functions operate under the control of SW, the need for functionally safe systems is growing at a rapid pace. The ISO 26262 standard has set the bar for the automotive industry. While the standard provides normative guidance for the key functional safety related attributes and properties of such systems it still facilitates significant degrees of freedom in how functional safety is achieved. This poses interesting challenges for the HW/SW co-design of such systems. Emerging dual-core lock-step MCUs offer an encapsulated computational infrastructure with numerous beneficial properties. Technical details on the SafeAssure program as a whole and on the MPC5643L in particular are available at http://www.freescale.com/safeassure.
About the author
Dr. Christopher Temple has been leading Freescale Semiconductor's Automotive Systems Technology team in Munich, Germany since 2004. With a focus on emerging systems technology the team is responsible for developing and contributing to opportunities across the automotive segments body, chassis & safety and powertrain with a focus on functional safety and in-vehicle networking. Dr. Temple has been active in the field of functional safety in general and distributed dependable systems in particular since 1995. At Freescale, he is a Managing Member of Technical Staff and Distinguished Innovator.
Courtesy of EETimes Europe
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