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AN4460 Datasheet(PDF) 27 Page - STMicroelectronics

Part # AN4460
Description  The STEVAL-ILL057V1 demonstration board is a complete
PDF  54 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4460 Datasheet(HTML) 27 Page - STMicroelectronics

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DocID026129 Rev 1
27/54
AN4460
Protection and regulation algorithm
54
6.4
Software crash protection
A final protection is used to prevent deadlock and software crashes and it's implemented via
the watchdog timer (IWDG). The watchdog is reset in the main function and must be
refreshed at least every 10.4 ms, otherwise the reset signal is internally generated to solve
the lock-up situation. In the current software implementation, the “printf” routine also
refreshes the IWDG timer due to the long time required to process strings.



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