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                        Functional Safety

                        Robustness, reliability and safety of end-products is becoming ever more important. In some application segments these requirements are formalized and mandatory, while in others this is implemented to differentiate the product, and take the step from a good product to an excellent product.

                        The standards for functional safety depend on the market that is targeted. Many standards support multiple levels of rigorousness, which are applied depending on the likelihood and severity of the hazard. The methods of addressing hazards range from detecting single failures and putting the system into a safe state, to full redundancy where failures should not only be detected but also corrected without any interruption or degradation of service.
                        STANDARD MARKETS
                        IEC 60730
                        Levels: A, B, C
                        Equipment for household, such as controls for heating, air conditioning. The equipment may use electricity, gas, oil, solid fuel, solar thermal energy.
                        IEC 61508 (SIL)
                        Levels: 1, 2, 3, 4
                        Active safety systems such as fire suppression systems, switches in a tank containing flammable liquids.
                        ISO 26262 (ASIL)
                        Levels: A, B, C, D
                         Automotive vehicles up to 3500 kg
                        IEC 62304
                         
                         For medical software and software in medical devices
                         

                        In addition to describing what must be tested and to what extent, the standards may also mandate development methods. This may include using qualified development tools. For microcontroller-based applications, one of the tools to be qualified is the C-compiler. Microchip and partners of Microchip offer compilers that are qualified, with some being certified by a Munich-based certification organization, TÜV SÜD.

                        VENDOR/PRODUCT QUALIFICATION
                        Microchip XC8 Compiler ISO 26262, IEC 61508, IEC 62304 and IEC 60730
                        Microchip XC16 Compiler ISO 26262, IEC 61508, IEC 62304 and IEC 60730
                        Microchip XC32 Compiler ISO 26262, IEC 61508, IEC 62304 and IEC 60730
                        IAR Embedded Workbench for Arm ISO 26262, IEC 61508, IEC 62304 and IEC 60730
                         
                        Microchip offers a number of products that enable system-level compliance to functional safety. This means that they have integrated features, qualified test libraries, safety manuals, and FMEDA reports, depending on the standard and the level of safety they support. All these items make it easier to develop applications that conform to the functional safety standards, and thereby reduce the work and cost of the final product compliance.
                         
                        MICROCONTROLLERS AVR®/PIC® MCUs PIC24/dsPIC® MCUs SAM/PIC32 MCUs
                        Class B Library Yes Yes Yes
                        SIL [lvl] Library
                        ASIL [lvl] Library
                        AutoSAR/MCAL Yes Yes
                        Application Notes Yes Yes Yes
                        Safety Manual Available upon Request
                        Contact your local sales rep
                        Available upon Request
                        Contact your local sales rep
                        FMEDA Reports Available uponRrequest
                        Contact your local sales rep
                        Available upon Request
                        Contact your local sales rep
                        Capacitive Touch Libraries* Available upon request
                        Contact your local sales rep
                        Yes
                        Safety-Qualified Compilers XC8 XC16 XC32
                        Code Coverage Tools
                         
                        Available from MPLAB Code Coverage or third-party tools from vendors such as LDRA
                           

                        *There are turnkey Capacitive Touch controllers available, such as the AT42QT1481

                        INTERFACE AND CONNECTIVITY PRODUCTS CAN AND CAN FD DEVICES LIN DEVICES
                        AutoSAR/MCAL Yes Yes
                        Safety Manual Yes Yes
                        FMEDA Reports Yes Yes

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