Gpio Register Map; Table 18. Gpio Register Map And Reset Values - ST STM32F205 series Reference Manual

Advanced arm-based 32-bit mcus
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RM0033
6.4.11

GPIO register map

The following table gives the GPIO register map and the reset values.
Offset
Register
GPIOA_
MODER
0x00
Reset value
GPIOB_
MODER
0x00
Reset value
GPIOx_MODER
(where x = C..I)
0x00
Reset value
GPIOx_
OTYPER
0x04
(where x = A..I)
Reset value
GPIOx_
OSPEEDR
(where x = A..I
0x08
except B)
Reset value
GPIOB_
OSPEEDR
0x08
Reset value
GPIOA_PUPDR
0x0C
Reset value
GPIOB_PUPDR
0x0C
Reset value

Table 18. GPIO register map and reset values

1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Reserved
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
RM0033 Rev 8
General-purpose I/Os (GPIO)
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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