Table 29. Pvm Features; Figure 11. Pvd Thresholds - ST STM32G4 Series Reference Manual

Power control (PWR)
PVD output
5.2.3 Peripheral Voltage Monitoring (PVM)
Only V
DD
functions. The V
peripheral voltage monitoring (PVM).
Each of the four PVMx (x=1, 2) is a comparator between a fixed threshold VPVMx and the
V power supply. PVMOx flags indicate if the independent power supply is higher or
DDA
lower than the PVMx threshold: PVMOx flag is cleared when the supply voltage is above the
PVMx threshold, and is set when the supply voltage is below the PVMx threshold.
Each PVM output is connected to an EXTI line and can generate an interrupt if enabled
through the EXTI registers. The PVMx output interrupt is generated when the independent
power supply drops below the PVMx threshold and/or when it rises above the PVMx
threshold, depending on EXTI line rising/falling edge configuration.
Each PVM can remain active in Stop 0 and Stop 1 modes, and the PVM interrupt can wake
up from the Stop mode.
PVM
PVM1
PVM2
The independent analog supply V
and electrical isolation is applied to ignore any information coming from the peripherals
supplied by this dedicated supply.
•
If V
DDA
without enabling any Peripheral Voltage Monitoring.
•
If V
DDA
enabled to confirm whether the supply is present or not.
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V DD
is monitored by default, as it is the only supply required for all system-related
can be independent from V
DDA
Power supply
V
DDA
V
DDA
is shorted externally to V
is independent from V

Figure 11. PVD thresholds

V threshold
PVD
and can be monitored with two
DD

Table 29. PVM features

PVM threshold
V (around 1.65 V)
PVM1
V (around 1.8 V)
PVM2
is not considered as present by default, and a logical
DDA
, the application should assume it is available
DD
, the Peripheral Voltage Monitoring (PVM) can be
DD
RM0440 Rev 1
RM0440
100 mV
hysteresis
MS31445V2
EXTI line
40
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