ST STM32F301 6 Series Reference Manual page 147

RM0366
Bits 31:16 Reserved, must be kept at reset value.
Bits 15:12 EXTI3[3:0]: EXTI 3 configuration bits
Bits 11:8 EXTI2[3:0]: EXTI 2 configuration bits
9.1.3 SYSCFG external interrupt configuration register 2
(SYSCFG_EXTICR2)
Address offset: 0x0C
Reset value: 0x0000 0000
31 30 29
Res. Res. Res. Res.
15 14 13
EXTI7[3:0]
rw rw rw
These bits are written by software to select the source input for the EXTI3 external
interrupt.
x000: PA[3] pin
x001: PB[3] pin
x010: PC[3] pin
other configurations: reserved
These bits are written by software to select the source input for the EXTI2 external
interrupt.
x000: PA[2] pin
x001: PB[2] pin
x010: PC[2] pin
x011: PD[2] pin
other configurations: reserved
Bits 7:4 EXTI1[3:0]: EXTI 1 configuration bits
These bits are written by software to select the source input for the EXTI1 external
interrupt.
x000: PA[1] pin
x001: PB[1] pin
x010: PC[1] pin
x101: PF[1] pin
other configurations: reserved
Bits 3:0 EXTI0[3:0]: EXTI 0 configuration bits
These bits are written by software to select the source input for the EXTI0 external
interrupt.
Note: x000: PA[0] pin
x001: PB[0] pin
x010: PC[0] pin
x101: PF[0] pin
other configurations: reserved
28 27 26 25
Res. Res. Res.
12 11 10 9
EXTI6[3:0]
rw rw rw rw
System configuration controller (SYSCFG)
24 23 22
Res. Res. Res.
8 7 6
EXTI5[3:0]
rw rw rw
RM0366 Rev 5
21 20 19 18
Res. Res. Res. Res.
5 4 3 2
EXTI4[3:0]
rw rw rw rw
17 16
Res. Res.
1 0
rw rw
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