Table 29. Lock_Sm_0 - ST STM32F2 Series User Manual

SM CODE
Description
Ownership
Detailed implementation
Error reporting
Fault detection time
Addressed fault model
Dependency on MCU configuration
Initialization
Periodicity
Test for the diagnostic
Multiple faults protection
Recommendations and known limitations No DC associated because this test addresses systematic faults
UM1845 - Rev 4
Table 29. LOCK_SM_0
LOCK_SM_0
Lock mechanism for configuration options
ST
The STM32F2 Series MCUs feature spread protection to prevent unintended configuration changes
for some peripherals and system registers (for example PVD_LOCK, timers); the spread protection
detects systematic faults in software application. The use of this method is encouraged to enhance
the end application robustness to systematic faults
Not generated (when locked, register overwrites are just ignored)
NA
None (Systematic only)
None
Depends on implementation
Continuous
Not needed
Not needed
Description of hardware and software diagnostics
UM1845
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