Checking and/or monitoring microcontroller system frequency involves determining and/or checking system frequency based on working frequency of interacting voltage-controlled oscillator

摘要

The method involves measuring the working frequency of a voltage controlled oscillator (15) that works in conjunction with the microcontroller (10) and determining and/or checking the system frequency based on the measured working frequency. The working frequency of the voltage controlled oscillator is determined using an analogue to digital converter (20). Independent claims are also included for the following: a microcontroller.