Programmable Voltage Detector (Pvd) - ST STM32F0 Series Application Note

Power supplies of the STM32F05xxx family
1.2.3

Programmable voltage detector (PVD)

You can use the PVD to monitor the V
selected by the PLS[2:0] bits in the Power control register (PWR_CR).
The PVD is enabled by setting the PVDE bit.
When enabled, the typical current consumption of this feature is 0.15 µA.
A PVDO flag is available, in the Power control/status register (PWR_CSR), to indicate if V
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
and/or when V
rising/falling edge configuration. As an example the service routine could perform
emergency shutdown tasks.
Figure 5.
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rises above the PVD threshold depending on EXTI line16
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PVD thresholds
V
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PVD output
Doc ID 023035 Rev 2
power supply by comparing it to a threshold
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V threshold
PVD
drops below the PVD threshold
100 mV
hysteresis
AN4080
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