INTEGRATED CIRCUIT DEVICE FOR MONITORING SIMULTANEOUSLY STACKED OSCILLATOR

摘要

An integrated circuit configuration and a method monitor an integrated oscillator in the circuit. The oscillator has a minimum frequency and furnishes a synchronously controlling clock rate for the functioning of the integrated circuit when excited by an external frequency standard. An integrated reserve oscillator has a maximum frequency below the minimum frequency of the oscillator. An integrated frequency comparator is connected to the reserve oscillator and to the oscillator for comparing the frequency of the reserve oscillator with the frequency of the oscillator.