27.1 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: switchable core domain (PD_CORE_SW), RAM power domain (PD_CORE_RAMx), backup (PD_CORE_BU) domain . It sets the voltage regulators according to the sleep modes, or the user configuration. It also controls a User LDO regulator to power an external component.

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 IOs. In backup mode, a dedicated Duty Cycle BOR (DCBOR) is able to monitor both VDDREG and VDDIO/AVDD. BOR12 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 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.