| Line | mode | port | comment |
| Exti Line 0 | | | |
| Exti Line 1 | | | |
| Exti Line 2 | | | |
| Exti Line 3 | | | |
| Exti Line 4 | | | |
| Exti Line 5 | | | |
| Exti Line 6 | | | |
| Exti Line 7 | | | |
| Exti Line 8 | | | |
| Exti Line 9 | | | |
| Exti Line 10 | | | |
| Exti Line 11 | | | |
| Exti Line 12 | | | |
| Exti Line 13 | | | |
| Exti Line 14 | | | |
| Exti Line 15 | | | |
| Exti Line 16 | | | PVD Output |
| Exti Line 17 | | | RTC Alarm event |
| Exti Line 18 | | | USB OTG FS Wakeup from suspend event |
| Exti Line 19 | | | Ethernet Wakeup event |
| Exti Line 20 | | | USB OTG HS (configured in FS) Wakeup event |
| Exti Line 21 | | | RTC Tamper and Time Stamp events |
| Exti Line 22 | | | RTC Wakeup event |