ST STM32WL55JC User Manual

RM0453 Rev 2 429/1454
RM0453 System configuration controller (SYSCFG)
444
11.2.3 SYSCFG external interrupt configuration register 1
(SYSCFG_EXTICR1)
Address offset: 0x008
Reset value: 0x0000 0000
Bits 15:9 Reserved, must be kept at reset value.
Bit 8 BOOSTEN: I/O analog switch voltage booster enable
0: I/O analog switches are supplied by V
DDA
voltage. This is the recommended configuration
when using the ADC in high V
DDA
voltage operation.
1: I/O analog switches are supplied by a dedicated voltage booster (supplied by V
DD
). This is
the recommended configuration when using the ADC in low V
DDA
voltage operation.
Bits 7:0 Reserved, must be kept at reset value.
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. EXTI3[2:0] Res. EXTI2[2:0] Res. EXTI1[2:0] Res. EXTI0[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 EXTI3[2:0]: EXTI3 configuration bits
These bits are written by software to select the source input for the EXTI3 external interrupt.
000: PA3 pin
001: PB3 pin
010: PC3 pin
011: Reserved
100: Reserved
101: Reserved
110: Reserved
111: PH3 pin
Bit 11 Reserved, must be kept at reset value.
Bits 10:8 EXTI2[2:0]: EXTI2 configuration bits
These bits are written by software to select the source input for the EXTI2 external interrupt.
000: PA2 pin
001: PB2 pin
010: PC2 pin
011: Reserved
100: Reserved
101: Reserved
110: Reserved
111: Reserved
Bit 7 Reserved, must be kept at reset value.

ST STM32WL55JC Specifications

General

Brand	ST
Model	STM32WL55JC
Category	Microcontrollers
Language	English