Gpio Port Output Type Register (Gpiox_Otyper) (X = A..h; Gpio Port Output Speed Register (Gpiox_Ospeedr) (X = A..h - ST STM32F446 Series Reference Manual

General-purpose I/Os (GPIO)
7.4.2

GPIO port output type register (GPIOx_OTYPER) (x = A..H)

Address offset: 0x04
Reset value: 0x0000 0000
31 30 29 28
Res. Res. Res. Res.
15 14 13 12
OT15 OT14 OT13 OT12
rw rw rw rw
Bits 31:16 Reserved, must be kept at reset value.
Bits 15:0 OTy: Port x configuration bits (y = 0..15)
7.4.3

GPIO port output speed register (GPIOx_OSPEEDR) (x = A..H)

Address offset: 0x08
Reset values:
•
0x0000 00C0 for port B
• 0x0000 0000 for other ports
31 30 29
OSPEEDR15 OSPEEDR14
[1:0] [1:0]
rw rw rw
15 14 13
OSPEEDR7 OSPEEDR6
[1:0] [1:0]
rw rw rw
Bits 2y:2y+1 OSPEEDRy[1:0]: Port x configuration bits (y = 0..15)
188/1328
27 26 25
Res. Res. Res.
11 10 9
OT11 OT10 OT9
rw rw rw
These bits are written by software to configure the output type of the I/O port.
0: Output push-pull (reset state)
1: Output open-drain
28 27 26 25
OSPEEDR13 OSPEEDR12
[1:0]
rw rw rw rw
12 11 10 9
OSPEEDR5 OSPEEDR4
[1:0]
rw rw rw rw
These bits are written by software to configure the I/O output speed.
00: Low speed
01: Medium speed
10: Fast speed
11: High speed
Note: Refer to the product datasheets for the values of OSPEEDRy bits versus V
range and external load.
24 23 22
Res. Res. Res.
8 7 6
OT8 OT7 OT6
rw rw rw
24 23 22
OSPEEDR11
[1:0] [1:0]
rw rw rw
8 7 6
OSPEEDR3[
[1:0] 1:0]
rw rw rw
RM0390 Rev 4
21 20 19 18
Res. Res. Res. Res.
5 4 3 2
OT5 OT4 OT3 OT2
rw rw rw rw
21 20 19
OSPEEDR10 OSPEEDR9
[1:0] [1:0]
rw rw rw
5 4 3
OSPEEDR2 OSPEEDR1
[1:0] [1:0]
rw rw rw
RM0390
17 16
Res. Res.
1 0
OT1 OT0
rw rw
18 17 16
OSPEEDR8
[1:0]
rw rw rw
2 1 0
OSPEEDR0
1:0]
rw rw rw
DD