Programmable Voltage Detector (Pvd); Figure 10. Bor Thresholds - ST STM32F40 Series Reference Manual

Power controller (PWR)
The BOR threshold hysteresis is ~100 mV (between the rising and the falling edge of the
supply voltage).

Figure 10. BOR thresholds

VDD/VDDA
5.2.3

Programmable voltage detector (PVD)

You can use the PVD to monitor the V
selected by the PLS[2:0] bits in the
STM32F405xx/07xx and STM32F415xx/17xx
for STM32F42xxx and
The PVD is enabled by setting the PVDE bit.
A PVDO flag is available, in the
if V is higher or lower than the PVD threshold. This event is internally connected to the
DD
EXTI line16 and can generate an interrupt if enabled through the EXTI registers. The PVD
output interrupt can be generated when V
V rises above the PVD threshold depending on EXTI line16 rising/falling edge
DD
configuration. As an example the service routine could perform emergency shutdown tasks.
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Reset
STM32F43xxx.
Doc ID 018909 Rev 4
BOR threshold
power supply by comparing it to a threshold
DD
PWR power control register (PWR_CR) for
and PWR power control register (PWR_CR)
PWR power control/status register
drops below the PVD threshold and/or when
DD
RM0090
100 mV
hysteresis
MS30432V1
(PWR_CSR), to indicate