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Running the demonstration
UM1590
Doc ID 023892 Rev 1
Figure 49.
Stop mode entered exit EXTI
The MCU remains in the Stop mode until the KEY push-button is pressed and the message
shown in
is displayed on the LCD screen.
Once the KEY push-button has been pressed, the MCU exits the Stop mode. The system
clock is then set to 72 MHz and the application resumes execution.
Figure 50.
MCU in the Stop mode Exit EXTI
Note:
If an RTC Alarm is generated while the MCU is in Stop mode and the message shown in
is displayed (which means that the KEY push-button needs to be pressed to exit
Stop mode), the RTC Alarm causes the MCU to exit Stop mode. The message shown in
is then displayed.