Peripheral Voltage Monitoring (Pvm); Table 43. Pvm Features; Figure 21. Pvd Thresholds - STMicroelectronics STM32WL5 Series Reference Manual

Power control (PWR)
PVD_IN
6.2.3

Peripheral voltage monitoring (PVM)

Only V
DD
functions. The other supplies (such as V
monitored by the peripheral voltage monitoring (PVM).
Each PVMx is a comparator between a fixed threshold V
supply. PVMOx flags indicate if the independent power supply is higher or lower than the
PVMx threshold. The 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, Stop 1 and Stop 2 modes, and the PVM interrupt
can wake up from the Stop modes.
236/1450
V , or
DD
PVD
rise
PVDO
PVDE
SW enable
is monitored by default as it is the only supply required for all system-related
PVM Power supply
PVM1
PVM2
PVM3
PVM4

Figure 21. PVD thresholds

hysteresis
) can be independent from V
DDA

Table 43. PVM features

PVM threshold
Not used
Not used
V V
DDA PVM3
Not used
RM0453 Rev 5
PVD
fall
PDR reset
DD
and the selected power
PVMx
-
-
(around 1.65 V)
-
RM0453
t
MS44481V1
and can be
EXTI line
-
-
34
-