Main voltage regulator: Low Dropout (LDO) in Active mode
Ultra Low-Power (ULP) voltage regulator in Standby sleep mode
Brown-out Detection Monitors the Power Supply to Prevent Operation Below a Programmable Level
Three modes:
Enabled (Continuous)
Sampled
Disabled
Separate selection of mode for active and sleep modes
Voltage Level Monitor (VLM) with interrupt
Programmable VLM level relative to the BOD level
MVIO System
Two mode configurations:
Dual Supply mode, with independent supply target voltage, ramp and removal on VDD and VDDIO2
Single Power Supply mode, with MVIO supply monitors are turned off to minimize current consumption
Mode selection fuse
Interrupt request for VDDIO2 power loss
CPU-readable VDDIO2 Power Status bit (domain-monitor status)
Pin access and port override function the same way as with VDD
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