Programmable Voltage Detector (Pvd); Figure 8. Pvd Thresholds - STMicroelectronics STM32F05 series Reference Manual

Power control (PWR)
6.2.2

Programmable voltage detector (PVD)

You can use the PVD to monitor the V
selected by the PLS[2:0] bits in the
The PVD is enabled by setting the PVDE bit.
A PVDO flag is available, in the
is higher or lower than the PVD threshold. This event is internally connected to the EXTI
line16 and can generate an interrupt if enabled through the EXTI registers. The PVD output
interrupt can be generated when V
rises above the PVD threshold depending on EXTI line16 rising/falling edge configuration.
As an example the service routine could perform emergency shutdown tasks.
Figure 8.
PVD output
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Power control/status register
PVD thresholds
V
DD
Doc ID 018940 Rev 1
power supply by comparing it to a threshold
DD
Power control register
drops below the PVD threshold and/or when V
DD
PVD threshold
(PWR_CR).
(PWR_CSR), to indicate if V
RM0091
DD
DD
100 mV
hysteresis