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RM0008
Figure 155. RTC simplified block diagram
PCLK1
APB1 bus
Real-time clock (RTC)
APB1 interface
not powered in Standby
RTCCLK
Backup domain
RTC_CR
RTC_PRL
Reload
RTC_DIV
TR_CLK
32-bit programmable
counter
RTC_CNT
RTC_Second
RTC_Overflow
SECF
SECIE
OWF
rising
edge
RTC prescaler
=
RTC_Alarm
OWIE
ALRF
ALRIE
RTC_ALR
not powered in Standby
powered in Standby
NVIC interrupt
powered in Standby
controller
not powered in Standby
WKUP pin
RTC_Alarm
WKP_STDBY
Doc ID 13902 Rev 9
exit
Standby mode
powered in Standby
ai14969
389/995
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