STMicroelectronics STM32WL5 Series User Manual

General-purpose I/Os (GPIO) RM0453
414/1450 RM0453 Rev 5
10.4.9 GPIOx alternate function low register (GPIOx_AFRL) (x = A to B)
Address offset: Block A: 0x0020
Address offset: Block B: 0x0420
Reset value: 0x0000 0000
10.4.10 GPIOx alternate function high register (GPIOx_AFRH) (x = A to B)
Address offset: Block A: 0x0024
Address offset: Block B: 0x0424
Reset value: 0x0000 0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL7[3:0] AFSEL6[3:0] AFSEL5[3:0] AFSEL4[3:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
1514131211109876543210
AFSEL3[3:0] AFSEL2[3:0] AFSEL1[3:0] AFSEL0[3:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:0 AFSELy[3:0]: Port Pxy alternate function selection (y = 7 to 0)
These bits are written by software to configure alternate function I/Os
0x0: AF0 selected
0x1: AF1 selected
0x2: AF2 selected
...
0xE: AF14 selected
0xF: AF15 selected
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL15[3:0] AFSEL14[3:0] AFSEL13[3:0] AFSEL12[3:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
1514131211109876543210
AFSEL11[3:0] AFSEL10[3:0] AFSEL9[3:0] AFSEL8[3:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:0 AFSELy[3:0]: Port Pxy alternate function selection (y = 15 to 8)
These bits are written by software to configure alternate function I/Os
0x0: AF0 selected
0x1: AF1 selected
0x2: AF2 selected
...
0xE: AF14 selected
0xF: AF15 selected

STMicroelectronics STM32WL5 Series Specifications

General

Brand	STMicroelectronics
Model	STM32WL5 Series
Category	Microcontrollers
Language	English