ST STM32F412 User Manual

General-purpose I/Os (GPIO) RM0402
184/1163 RM0402 Rev 6
7.4.10 GPIO alternate function high register (GPIOx_AFRH)
(x = A...H)
Address offset: 0x24
Reset value: 0x0000 0000
7.4.11 GPIO register map
The following table gives the GPIO register map and the reset values.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFRH15[3:0] AFRH14[3:0] AFRH13[3:0] AFRH12[3:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
1514131211109876543210
AFRH11[3:0] AFRH10[3:0] AFRH9[3:0] AFRH8[3:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:0 AFRHy: Alternate function selection for port x bit y (y = 8..15)
These bits are written by software to configure alternate function I/Os
AFRHy selection:
0000: AF0
0001: AF1
0010: AF2
0011: AF3
0100: AF4
0101: AF5
0110: AF6
0111: AF7
1000: AF8
1001: AF9
1010: AF10
1011: AF11
1100: AF12
1101: AF13
1110: AF14
1111: AF15
Table 28. GPIO register map and reset values
Offset Register
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12
11
10
9 8 7 6 5 4 3 2 1 0
0x00
GPIOA_
MODER
MODER15[1:0] MODER14[1:0] MODER13[1:0] MODER12[1:0]
MODER11[1:0]
MODER10[1:0]
MODER9[1:0] MODER8[1:0] MODER7[1:0] MODER6[1:0] MODER5[1:0] MODER4[1:0] MODER3[1:0] MODER2[1:0] MODER1[1:0] MODER0[1:0]
Reset value 00001100000000000000000000000000
0x00
GPIOB_
MODER
MODER15[1:0] MODER14[1:0] MODER13[1:0] MODER12[1:0]
MODER11[1:0]
MODER10[1:0]
MODER9[1:0] MODER8[1:0] MODER7[1:0] MODER6[1:0] MODER5[1:0] MODER4[1:0] MODER3[1:0] MODER2[1:0] MODER1[1:0] MODER0[1:0]
Reset value 00000000000000000000001010000000
0x00
GPIOx_MODER
(where x =
C...H)
MODER15[1:0] MODER14[1:0] MODER13[1:0] MODER12[1:0]
MODER11[1:0]
MODER10[1:0]
MODER9[1:0] MODER8[1:0] MODER7[1:0] MODER6[1:0] MODER5[1:0] MODER4[1:0] MODER3[1:0] MODER2[1:0] MODER1[1:0] MODER0[1:0]
Reset value 00000000000000000000000000000000

ST STM32F412 Specifications

General

Brand	ST
Model	STM32F412
Category	Microcontrollers
Language	English