Extended interrupts and event controller (EXTI) RM0453
508/1454 RM0453 Rev 2
14 EXTI[14] EXTI line 14 from SYSCFG Configurable Yes CPU1 and CPU2
15 EXTI[15] EXTI line 15 from SYSCFG Configurable Yes CPU1 and CPU2
16 PVD PVD line Configurable No CPU1 and CPU2
17 RTC_ALARM RTC alarms A and B interrupt Direct Yes CPU1 and CPU2
18 SSRU RTC SSR underflow interrupt Direct Yes CPU1 and CPU2
19
TAMP,
RTC_STAMP,
LSE_CSS
TAMP tamper interrupt
RTC timestamp interrupt
RCC LSECSS interrupt
Direct Yes CPU1 and CPU2
20 RTC_WKUP RTC wakeup interrupt Direct Yes CPU1 and CPU2
21 COMP1 COMP1 line Configurable Yes CPU1 and CPU2
22 COMP2 COMP2 line Configurable Yes CPU1 and CPU2
23 I2C1 wakeup I2C1 wakeup Direct No CPU1 and CPU2
24 I2C2 wakeup I2C2 wakeup Direct No CPU1 and CPU2
25 I2C3 wakeup I2C3 wakeup Direct No CPU1 and CPU2
26 USART1 USART1 wakeup Direct No CPU1 and CPU2
27 USART2 USART2 wakeup Direct No CPU1 and CPU2
28 LPUART1 LPUART1 wakeup Direct No CPU1 and CPU2
29 LPTIM1 wakeup LPtimer 1 wakeup Direct No CPU1 and CPU2
30 LPTIM2 wakeup LPtimer 2 wakeup Direct No CPU1 and CPU2
31 LPTIM3 wakeup LPtimer 3 wakeup Direct No CPU1 and CPU2
32 Reserved - Direct No -
33 Reserved - Direct No -
34 PVM[3] PVM[3] line Configurable No CPU1 and CPU2
35 Reserved - Direct No -
36 IPCC CPU1
IPCC CPU1 RX occupied and TX free
interrupts
Direct No CPU1
(1)
37 IPCC CPU2
IPCC CPU2 RX occupied and TX free
interrupts
Direct No CPU2
(2)
38 HSEM interrupt 0 Semaphore interrupt 0 with CPU1 Direct No CPU1
(1)
39 HSEM interrupt 1 Semaphore interrupt 1 with CPU2 Direct No CPU2
(2)
40 C2SEV CPU2 SEV line Configurable Yes CPU1
(3)
41 C1SEV CPU1 SEV line Configurable Yes CPU2
(4)
42 Flash Flash ECC and global interrupts Direct No CPU1 and CPU2
43
HSE32 CSS
interrupt
RCC HSE32 CSS interrupt Direct No CPU1 and CPU2
44 Radio IRQs Radio IRQs interrupts Direct No CPU1 and CPU2
Table 93. Wakeup interrupts (continued)
EXTI
n
o
Acronym Description EXTI type Event Wakeup
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