ST STM32F301 6 Series Reference Manual page 183

RM0366
The remaining 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 reserved
•
EXTI line 19 is connected to RTC tamper and timestamps
•
EXTI line 20 is connected to RTC wake-up timer
•
EXTI line 21 is reserved
•
EXTI line 22 is connected to Comparator 2 output
•
EXTI line 23 is connected to I2C1 wake-up
• EXTI line 24 is connected to I2C2 wake-up
•
EXTI line 25 is connected to USART1 wake-up
• EXTI line 26 is reserved
•
EXTI line 27 is connected to I2C3 wake-up
• EXTI line 28 is reserved
•
EXTI line 29 is reserved
• EXTI line 30 is connected to Comparator 4 output
•
EXTI line 31 is reserved
• EXTI line 32 is connected to Comparator 6 output
•
EXTI line 33 is reserved
• EXTI line 34 is reserved
•
EXTI line 35 is reserved
Note: EXTI lines 23, 24, 25 and 27 are internal.
11.3 registers
EXTI
Refer to
The peripheral registers have to be accessed by words (32-bit).
11.3.1 Interrupt mask register (EXTI_IMR1)
Address offset: 0x00
Reset value: 0x1F80 0000 (Refer to the note below)
31 30 29
Res. MR30 Res. Res.
rw
15 14 13
MR15 MR14 MR13 MR12
rw rw rw
Section 1.2 for a list of abbreviations used in register descriptions.
28 27 26 25
MR27 Res. MR25
rw rw
12 11 10 9
MR11 MR10 MR9
rw rw rw rw
24 23 22
MR24 MR23 MR22 Res.
rw rw rw
8 7 6
MR8 MR7 MR6 MR5
rw rw rw
RM0366 Rev 5
Interrupts and events
21 20 19 18
MR20 MR19 Res.
rw rw
5 4 3 2
MR4 MR3 MR2
rw rw rw rw
17 16
MR17 MR16
rw rw
1 0
MR1 MR0
rw rw
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