STMicroelectronics STM32WL5 Series User Manual

Real-time clock (RTC) RM0453
1008/1450 RM0453 Rev 5
32.5 RTC interrupts
The interrupt channel is set in the masked interrupt status register. The interrupt output is
also activated.
Table 214. Interrupt requests
Interrupt
acronym
Interrupt event
Event
flag
(1)
Enable
control bit
(2)
Interrupt
clear
method
Exit from
Sleep
mode
Exit from
Stop and
Standby
mode
Exit from
Shutdown
mode
RTC
Alarm A ALRAF ALRAIE
write 1 in
CALRAF
Yes Yes
(3)
Yes
(4)
Alarm B ALRBF ALRBIE
write 1 in
CALRBF
Yes Yes
(3)
Yes
(4)
Timestamp TSF TSIE
write 1 in
CTSF
Yes Yes
(3)
Yes
(4)
Wake-up timer
interrupt
WUTF WUTIE
write 1 in
CWUTF
Yes Yes
(3)
Yes
(4)
SSR underflow SSRUF SSRUIE
write 1 in
CSSRUF
Yes Yes
(3)
Yes
(4)
1. The event flags are in the RTC_SR register.
2. The interrupt masked flags (resulting from event flags AND enable control bits) are in the RTC_MISR register.
3. Wake-up from Stop and Standby modes is possible only when the RTC clock source is LSE or LSI.
4. Wake-up from Shutdown modes is possible only when the RTC clock source is LSE.

STMicroelectronics STM32WL5 Series Specifications

General

Brand	STMicroelectronics
Model	STM32WL5 Series
Category	Microcontrollers
Language	English