System configuration controller (SYSCFG) RM0091
138/742 Doc ID 018940 Rev 1
9.1.3 SYSCFG external interrupt configuration register 2
(SYSCFG_EXTICR2)
Address offset: 0x0C
Reset value: 0x0000
Note: Some of the I/O pins mentioned in the above register may not be available on small
packages.
9.1.4 SYSCFG external interrupt configuration register 3
(SYSCFG_EXTICR3)
Address offset: 0x10
Reset value: 0x0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res.
1514131211109876543210
EXTI7[3:0] EXTI6[3:0] EXTI5[3:0] EXTI4[3:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:16 Reserved, must be kept at reset value.
Bits 15:0 EXTIx[3:0]: EXTI x configuration bits (x = 4 to 7)
These bits are written by software to select the source input for the EXTIx
external interrupt.
x000: PA[x] pin
x001: PB[x] pin
x010: PC[x] pin
x011: reserved
x100: reserved
x101: PF[x] pin
other configurations: reserved
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res.
1514131211109876543210
EXTI11[3:0] EXTI10[3:0] EXTI9[3:0] EXTI8[3:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:16 Reserved, must be kept at reset value.
Bits 15:0 EXTIx[3:0]: EXTI x configuration bits (x = 8 to 11)
These bits are written by software to select the source input for the EXTIx
external interrupt.
x000: PA[x] pin
x001: PB[x] pin
x010: PC[x] pin
other configurations: reserved
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