Main voltage regulator: LDO or
Buck Converter in active mode (MAINVREG)
Low Power voltage regulator in
standby mode (LPVREG)
Backup voltage regulator for
backup domains
Controlled VDDCORE voltage slope
when changing VDDCORE
Battery Backup Power Switch
Automatic switching from main
power to battery backup power
Automatic entry to backup
mode when switched to battery backup power
Automatic switching from battery
backup power to main power
Automatic exit from backup mode when switched back to main power
Stay in backup mode when switched back to main power
Main power request upon wake-up
sources from backup mode
Voltage Reference System
Reference voltage for ADC and
DAC
Temperature sensor
3.3V Brown-Out Detector (BOD33)
Programmable threshold
Threshold value loaded from NVM
User Row at startup
Triggers resets, interrupts, or
Battery Backup Power Switch. Action loaded from NVM User Row
Operating modes:
Continuous mode
Sampled mode for low power
applications with programmable sample frequency
Hysteresis value from Flash User
Calibration
Monitor VDD or VBAT
1.2V Brown-Out Detector (BOD12)
Internal non-configurable
Brown-Out Detector
Output pins
Pin toggling on RTC event
The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.
