Features
- Voltage Regulator System
- 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