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RTC: are interrupt flag set during Vbat mode
I have a STM32U595 and I use the RTC in binary mode.
If an SSR underflow occurs during Vbat mode, will the SSRUF be set so after power recovery I can manage the interrupt ?
ELABI.1Best answer
ST Technical Moderator
Nov 20, 2025 1:32 PM UTC
Hi
Yes, SSRUF will still be set when VDD is back, with interrupt generation, which can then be served after NVIC initialization.
You can refer to the Reference Manual RM0456 section 63 Real-time clock (RTC) for more information.
Thanks.
ELABI.1
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