External Interrupt/Event Line Mapping; Figure 30. External Interrupt/Event Gpio Mapping - ST STM32F423 Reference Manual

RM0430
10.2.5

External interrupt/event line mapping

Up to STM32F413/423 are connected to the 16 external interrupt/event lines in the following
manner:
The five other EXTI lines are connected as follows:
• EXTI line 16 is connected to the PVD output
•
EXTI line 17 is connected to the RTC Alarm event
• EXTI line 18 is connected to the USB OTG FS Wakeup event
•
EXTI line 21 is connected to the RTC Tamper and TimeStamp events
• EXTI line 22 is connected to the RTC Wakeup event
•
EXTI line 23 is connected to the LPTIM1 asynchronous event

Figure 30. External interrupt/event GPIO mapping

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