METHOD FOR THE OPERATION OF A MICROCONTROLLER AND AN EXECUTION UNIT AND A MICROCONTROLLER AND AN EXECUTION UNIT

摘要

The present invention relates to a microcontroller (MC) which can be coupled to an execution unit (EU). For the operation of the microcontroller MC the program PR of the microcontroller MC generates a message MSG as a function of the input data S_1 and S_2 and sends the message MSG to the execution unit EU, Lt; / RTI For operation of the microcontroller MC, a check code CV is generated as a function of the execution of the program PR and transmitted to the execution unit EU, following the message MSG. For operation of the execution unit (EU), it is determined by test whether a check code (CV) is logically predefined and / or received within a predetermined time interval (T_INT), and if the test result is positive, MSG) is specified as valid, and if the test result is negative, the message (MSG) is designated as invalid.