ST STM32F446 Series User Manual

General-purpose I/Os (GPIO) RM0390
188/1328 RM0390 Rev 4
7.4.2 GPIO port output type register (GPIOx_OTYPER) (x = A..H)
Address offset: 0x04
Reset value: 0x0000 0000
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 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res.
1514131211109876543210
OT15 OT14 OT13 OT12 OT11 OT10 OT9 OT8 OT7 OT6 OT5 OT4 OT3 OT2 OT1 OT0
rw rw rw rw rw rw rw rw rw rw rw rw 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)
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
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OSPEEDR15
[1:0]
OSPEEDR14
[1:0]
OSPEEDR13
[1:0]
OSPEEDR12
[1:0]
OSPEEDR11
[1:0]
OSPEEDR10
[1:0]
OSPEEDR9
[1:0]
OSPEEDR8
[1:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OSPEEDR7
[1:0]
OSPEEDR6
[1:0]
OSPEEDR5
[1:0]
OSPEEDR4
[1:0]
OSPEEDR3[
1:0]
OSPEEDR2
[1:0]
OSPEEDR1
[1:0]
OSPEEDR0
1:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 2y:2y+1 OSPEEDRy[1:0]: Port x configuration bits (y = 0..15)
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
DD
range and external load.

ST STM32F446 Series Specifications

General

Brand	ST
Model	STM32F446 Series
Category	Microcontrollers
Language	English