3.6.18 Power control
Table 80. VSUP_SM_0
SM CODE VSUP_SM_0
Description Periodical read-back of configuration registers
Ownership End user
Detailed implementation
This method must be applied to configuration registers.
Detailed information on the implementation of this method can be found in Section 3.6.5
Error reporting Refer to NVIC_SM_0
Fault detection time Refer to NVIC_SM_0
Addressed fault model Refer to NVIC_SM_0
Dependency on MCU configuration Refer to NVIC_SM_0
Initialization Refer to NVIC_SM_0
Periodicity Refer to NVIC_SM_0
Test for the diagnostic Refer to NVIC_SM_0
Multiple faults protection Refer to NVIC_SM_0
Recommendations and known limitations Refer to NVIC_SM_0
Table 81. VSUP_SM_1
SM CODE VSUP_SM_1
Description Supply voltage internal monitoring (PVD)
Ownership ST
Detailed implementation
The device features an embedded programmable voltage detector (PVD) that monitors the VDD power
supply and compares it to the VPVD threshold. An interrupt can be generated when VDD drops below
the VPVD threshold or when VDD is higher than the VPVD threshold
Error reporting Interrupt Event generation
Fault detection time Depends on threshold programming, refer to functional documentation
Addressed fault model Permanent and Transient
Dependency on MCU configuration None
Initialization Protection enable by PVDE bit and threshold programming in Power control register (PWR_CR)
Periodicity Continuous
Test for the diagnostic VSUP_SM_0: periodical read-back of configuration registers
Multiple faults protection CPU_SM_5: external watchdog
Recommendations and known
limitations
Internal monitoring PVD has limited capability to address failures related to wrong VDD values. It can be
integrated by VSUP_SM_4 (PVM) in case specific power schemes are implemented (i.e. some
independent supplies directly connected to VDD, allowing to use PVD and PVM to control high and low
thresholds for VDD).
Internal monitoring PVD has limited capability to address failures affecting STM32F2 Series internal
voltage regulator. Refer to device FMEA for details
UM1845
Description of hardware and software diagnostics
UM1845 - Rev 4
page 56/108
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