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Knowhow 8 1 2021 Powered by Committed to Excellence www rutronik com NOR flash Safety for automotive and industrial innovations With the advancement of artificial intelligence machines are being entrusted to take on more and more tasks Especially in automotive and industrial applications sensors monitor the environment and algorithms draw conclusions based on the compiled sensor data These systems need to not only work correctly to ensure safety but also need to make the right decisionsevery time all the time Modern NOR flash memory can help achieve this By Adrian Elms Senior Marketing Manager at Rutronik and Stephan Wegstein Senior Manager Product Marketing at Infineon Technologies Steering acceleration braking and parking assistance systems lane departure warning systemsthere are more and more systems that help us to drive our cars They offer greater performance greater comfort and greater safety But in the latter case they themselves need to satisfy strict functional safety standards These are defined in two standards IEC 61508 declares four safety integrity levels SILs for industrial control systems see table ISO 26262 on the other hand applies to safetycritical electrical electronic E Esystems in automotive vehicles It defines the safety levels ASIL Ato ASIL Dwhere ASIL Arepresents the lowest risk potential and ASIL Drepresents the highest The level is determined on the basis of frequency controllability and severity of the accident and or damage ISO 26262 is based on IEC 61508 but specifically accommodates concerns specific to the automotive industry These include in particuThe architecture of the Semper NOR flash memory combines an ARM Cortex-M0 with numerous safety functions lar controllability or the ability of a driver or other traffic participants to prevent damage or an accident in a given scenario NOR flash in safetycritical systems In numerous advanced driverassistance systems ADAS NOR flash memory plays a key role as part of a safetycritical system because this nonvolatile programmable memory is robust reliable and fast The host processor can execute code directly from the flash memory without having to copy it to external DRAM first This makes NOR flash memory ideal for code execution not just in the car but also in industrial robots and other IoT machinery and devices Another advantage is its large temperature range allowing it to be used in a wide variety of environments and applications in the vehicle Common uses for NOR flash memory in automotive and industrial applications include Figure Infineon