RM0453 Rev 1 431/1461
RM0453 System configuration controller (SYSCFG)
445
Note: Some of the I/O pins mentioned in this register may not be available on small packages.
11.2.4 SYSCFG external interrupt configuration register 2
(SYSCFG_EXTICR2)
Address offset: 0x00C
Reset value: 0x0000 0000
Bits 6:4 EXTI1[2:0]: EXTI1 configuration bits
These bits are written by software to select the source input for the EXTI1 external interrupt.
000: PA1 pin
001: PB1 pin
010: PC1 pin
011: Reserved
100: Reserved
101: Reserved
110: Reserved
111: Reserved
Bit 3 Reserved, must be kept at reset value.
Bits 2:0 EXTI0[2:0]: EXTI0 configuration bits
These bits are written by software to select the source input for the EXTI0 external interrupt.
000: PA0 pin
001: PB0 pin
010: PC0 pin
011: Reserved
100: Reserved
101: Reserved
110: Reserved
111: 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
Res. EXTI7[2:0] Res. EXTI6[2:0] Res. EXTI5[2:0] Res. EXTI4[2:0]
rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:15 Reserved, must be kept at reset value.
Bits 14:12 EXTI7[2:0]: EXTI7 configuration bits
These bits are written by software to select the source input for the EXTI7 external interrupt.
000: PA7 pin
001: PB7 pin
010: Reserved
011: Reserved
100: Reserved
101: Reserved
110: Reserved
111: Reserved
Bit 11 Reserved, must be kept at reset value.
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