ST STM32F102 series

Real-time clock (RTC) RM0008
344/690
Figure 151. RTC simplified block diagram
32-bit programmable
=
Reload
APB1 interface
APB1 bus
NVIC interrupt
controller
OWF
rising
edge
counter
OWIE
SECF
SECIE
ALRF
ALRIE
Standby mode
exit
powered in Standby
powered in Standby
not powered in Standby
not powered in Standby
powered in Standby
not powered in Standby
Backup domain
RTC_PRL
RTC_DIV
RTC_CNT
ai14969
PCLK1
RTCCLK
RTC_CR
RTC_ALR
WKUP pin
WKP_STDBY
RTC_Alarm
RTC_Alarm
RTC_Overflow
RTC_Second
TR_CLK
RTC prescaler