26.1 Overview

The Supply Controller (SUPC) manages the voltage reference, power supply and supply monitoring of the device. It is also able to control multiple output pins named “SUPC_OUT[1:0]”.

The SUPC controls all the voltage regulators supplying the multiple 1.2v domain. It sets the voltage regulators according to the sleep modes, or the user configuration.

The SUPC controls several Brown-Out Reset (BOR) BOR_VDDREG monitors the voltage applied to the regulators (VDDREG), BOR_VDDIO monitors the voltage applied to I/Os. In Backup Mode, a dedicated Duty Cycle BOR (DCBOR) is able to monitor VDDREG and VDDIO/VDDA. BOR_VDDUSB0 and 1 monitor the voltage applied to VUSB3V0 and 1. PORCORE tightly coupled with the capless regulator guarantees the internal voltage of the core (VDDCORE).

The SUPC controls a configurable Low Voltage Detector used to monitor VDDREG in both directions.

The SUPC controls also an internal reference voltage and a current dependent on the temperature which can be used by analog modules like the ADC.

The SUPC also controls the device’s charge pumps.