ST STM32L4+ Series Reference Manual page 480

Extended interrupts and events controller (EXTI)
1. The GPIOs PI12 to PI15 are not available.
The EXTI lines are connected as shown in
480/2301
Figure 44. External interrupt/event GPIO mapping
EXTI0[3:0] bits in the SYSCFG_EXTICR1 register
PG0
PI0
EXTI1[3:0] bits in the SYSCFG_EXTICR1 register
PG1
PI1
EXTI15[3:0] bits in the SYSCFG_EXTICR4 register
PA15
PB15
PC15
PD15
PE15
PF15
PG15
PH15
Table 78. EXTI lines connections
EXTI line
0-15
16
17
18
PA0
PB0
PC0
PD0 EXTI0
PE0
PF0
PH0
(1)
PA1
PB1
PC1
PD1 EXTI1
PE1
PF1
PH1
(1)
EXTI15
(1)
Table 78: EXTI lines
(1)
Line source
GPIO
PVD
OTG FS wakeup event
(OTG_FS_WKUP)
RTC alarms or SSRU
RM0432 Rev 6
connections.
Line type
configurable
configurable
(2)
direct
(3)
configurable
RM0432
MS46947V1