Extended interrupts and event controller (EXTI)
EXTI
Acronym
o
n
15
EXTI[15]
16
PVD
17
RTC_ALARM
18
SSRU
TAMP,
19
RTC_STAMP,
LSE_CSS
20
RTC_WKUP
21
COMP1
22
COMP2
23
I2C1 wakeup
24
I2C2 wakeup
25
I2C3 wakeup
26
USART1
27
USART2
28
LPUART1
29
LPTIM1 wakeup
30
LPTIM2 wakeup
31
LPTIM3 wakeup
32
Reserved
33
Reserved
34
PVM[3]
35
Reserved
36
Reserved
37
Reserved
38
HSEM interrupt 0
39
Reserved
40
Reserved
41
Reserved
42
Flash
HSE32 CSS
43
interrupt
44
Radio IRQs
45
Radio Busy
46
CDBGPWRUPREQ
406/1306
Table 81. Wakeup interrupts (continued)
Description
EXTI line 15 from SYSCFG
PVD line
RTC alarms A and B interrupt
RTC SSR underflow interrupt
TAMP tamper interrupt
RTC timestamp interrupt
RCC LSECSS interrupt
RTC wakeup interrupt
COMP1 line
COMP2 line
I2C1 wakeup
I2C2 wakeup
I2C3 wakeup
USART1 wakeup
USART2 wakeup
LPUART1 wakeup
LPtimer 1 wakeup
LPtimer 2 wakeup
LPtimer 3 wakeup
-
-
PVM[3] line
-
-
-
Semaphore interrupt 0 with CPU
-
-
-
Flash ECC and global interrupts
RCC HSE32 CSS interrupt
Radio IRQs interrupts
RFBUSY wakeup
Debug power-up request wakeup
RM0461 Rev 5
EXTI type
Event
Configurable
Yes
Configurable
No
Direct
Yes
Direct
Yes
Direct
Yes
Direct
Yes
Configurable
Yes
Configurable
Yes
Direct
No
Direct
No
Direct
No
Direct
No
Direct
No
Direct
No
Direct
No
Direct
No
Direct
No
Direct
No
Direct
No
Configurable
No
Direct
No
Direct
No
Direct
No
Direct
No
Direct
No
Configurable
No
Configurable
No
Direct
No
Direct
No
Direct
No
Configurable
No
Direct
No
RM0461
Wakeup
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
-
-
CPU
-
-
-
CPU
-
-
-
CPU
CPU
CPU
CPU
CPU
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