VEHICLE CONTROL UNIT HAVING A MICROCONTROLLER THE SUPPLY VOLTAGE OF WHICH IS MONITORED AND ASSOCIATED METHOD
A vehicle control unit (CD) has a microcontroller (MC), to which multiple analog supply voltages (VCC1 with VCCn) are applied, and a monitoring unit (MU) for the functional monitoring of the microcontroller (MC). The microcontroller (MC) comprises an A/D converter (ADC1) for the conversion of the plurality of analog supply voltages (VCC1-VCCn) into digitized supply voltages. A computing area (LL2) of the microcontroller (MC) which is secured by a computer is provided for monitoring said digitized supply voltages of the microcontroller (MC), the plurality of digitized supply voltages being monitored in said area as to whether they are within predetermined tolerance ranges (TB1, TB2).