RM0390 Rev 4 245/1328
RM0390 Interrupts and events
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10.2.5 External interrupt/event line mapping
Up to 114 GPIOs are connected to the 16 external interrupt/event lines in the following
manner:
Figure 31. External interrupt/event GPIO mapping
The seven 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 20 is connected to the USB OTG HS (configured in 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
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