ST ST32M103 Series User Manual

UM0306 General purpose and alternate function I/O (GPIO and AFIO)
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5.5 GPIO and AFIO register maps
Refer to Table 1 on page 27 for the register boundary addresses.
5.5.1 GPIO register map
5.5.2 AFIO register map
Table 25. 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
00h
GPIOx_CRL
CNF
7
[1:0]
MODE
7
[1:0]
CNF
6
[1:0]
MODE
6
[1:0]
CNF
5
[1:0]
MODE
5
[1:0]
CNF
4
[1:0]
MODE
4
[1:0]
CNF
3
[1:0]
MODE
3
[1:0]
CNF
2
[1:0]
MODE
2
[1:0]
CNF
1
[1:0]
MODE
1
[1:0]
CNF
0
[1:0]
MODE
0
[1:0]
Reset Value 01000100010001000100010001000100
04h
GPIOx_CRH
CNF
15
[1:0]
MODE
15
[1:0]
CNF
14
[1:0]
MODE
14
[1:0]
CNF
13
[1:0]
MODE
13
[1:0]
CNF
12
[1:0]
MODE
12
[1:0]
CNF
11
[1:0]
MODE
11
[1:0]
CNF
10
[1:0]
MODE
10
[1:0]
CNF
9
[1:0]
MODE
9
[1:0]
CNF
8
[1:0]
MODE
8
[1:0]
Reset Value 01000100010001000100010001000100
08
h
GPIOx_IDR
Reserved
IDR[15:0]l
Reset Value 0000000000000000
0Ch
GPIOx_ODR
Reserved
ODR[15:0]
Reset Value 0000000000000000
10h
GPIOx_BSRR BR[15:0] BSR[15:0]
Reset Value 00000000000000000000000000000000
14h
GPIOx_BRR
Reserved
BR[15:0]
Reset Value 0000000000000000
18h
GPIOx_LCKR
Reserved
LCKK
LCK[15:0]
Reset Value 00000000000000000
Table 26. AFIO 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
00h
AFIO_EVCR
Reserved
EVOE
PORT[2:0] PIN[2:0]
Reset Value 0000000
04h
AFIO_MAPR
Reserved
SWJ_CFG[2] SWJ_CFG[1] SWJ_CFG[0]
Reserved
PD01_REMAP
CAN_REMAP[1] CAN_REMAP[0]
TIM4_REMPAP
TIM3_REMPAP[1] TIM3_REMPAP[0] TIM2_REMPAP[1] TIM2_REMPAP[0] TIM1_REMPAP[1] TIM1_REMPAP[0]
USART3_REMAP[1] USART3_REMAP[0]
USART2_REMAP USART1_REMAP
I2C1_REMAP
SPI1_REMAP
Reset Value 000 0000000000000000
08h
AFIO_EXTICR1
Reserved
EXTI3[3:0] EXTI2[3:0] EXTI1[3:0] EXTI0[3:0]
Reset Value 0000000000000000
0Ch
AFIO_EXTICR2
Reserved
EXTI7[3:0] EXTI6[3:0] EXTI5[3:0] EXTI4[3:0]
Reset Value 0000000000000000
10h
AFIO_EXTICR3
Reserved
EXTI11[3:0] EXTI10[3:0] EXTI9[3:0] EXTI8[3:0]
Reset Value 0000000000000000
14h
AFIO_EXTICR4
Reserved
EXTI15[3:0] EXTI14[3:0] EXTI13[3:0] EXTI12[3:0]
Reset Value 0000000000000000
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ST ST32M103 Series Specifications

General

Brand	ST
Model	ST32M103 Series
Category	Microcontrollers
Language	English