Various logic circuits and processors
are extremely sensitive to changes in their operating voltage and no longer work properly when the voltage fluctuates or the supply voltage is reduced. They generate malfunctions because
is nolonger executed correctly due to too low voltages.
To prevent this, there is a detection circuit, the Brown-Out-Detect (BOD), which works as a sensing circuit and generates a reset within a specified time when the supply voltage is too low, which resets the processor. When the supply voltage returns to the operating voltage, the brown-out detect generates a release that enables the monitored circuit again. This then processes the program code again from the beginning.