60.6.3.5 Voltage Monitors
Voltage monitors verify the input voltage and send an error signal when the measured voltage is out of range.
Two types of alarm are generated:
- High threshold overtaking
- Low threshold undertaking
In Normal mode, i.e., when the chip is fully powered, voltage measurements are performed on VDDCORE, VDDCPU and VBAT. VDDCORE, VDDANA and VDDCPU are continually monitored, whereas VBAT and VDDBU measurements are scheduled in order to reduce power consumption on the VBAT power supply. When Backup mode is active, only VBAT is monitored.