Gpio Port Output Speed Register (Gpiox_Ospeedr); (X = A; Gpio Port Pull-Up/Pull-Down Register (Gpiox_Pupdr) - STMicroelectronics RM0365 Reference Manual

General-purpose I/Os (GPIO)
10.4.3

GPIO port output speed register (GPIOx_OSPEEDR)

(x = A..H)
Address offset: 0x08
Reset value:
•
0xC000 0000 for port A
• 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+1:2y OSPEEDRy[1:0]: Port x configuration bits (y = 0..15)
These bits are written by software to configure the I/O output speed.
Note: Refer to the device datasheet for the frequency specifications and the power supply
10.4.4

GPIO port pull-up/pull-down register (GPIOx_PUPDR)

(x = A..H)
Address offset: 0x0C
Reset values:
•
0x6400 0000 for port A
• 0x0000 0100 for port B
•
0x0C00 0000 for other ports
31 30 29 28
PUPDR15[1:0] PUPDR14[1:0]
rw rw rw rw
15 14 13 12
PUPDR7[1:0] PUPDR6[1:0]
rw rw rw rw
Bits 2y+1:2y PUPDRy[1:0]: Port x configuration bits (y = 0..15)
These bits are written by software to configure the I/O pull-up or pull-down
165/1080
28 27 26 25
OSPEEDR13 OSPEEDR12
[1:0]
rw rw rw rw
12 11 10 9
OSPEEDR5 OSPEEDR4
[1:0]
rw rw rw rw
x0: Low speed
01: Medium speed
11: High speed
and load conditions for each speed.
27 26 25
PUPDR13[1:0] PUPDR12[1:0]
rw rw rw
11 10 9
PUPDR5[1:0] PUPDR4[1:0]
rw rw rw
00: No pull-up, pull-down
01: Pull-up
10: Pull-down
11: Reserved
DocID025202 Rev 7
24 23 22
OSPEEDR11
[1:0] [1:0]
rw rw rw
8 7 6
OSPEEDR3
[1:0] [1:0]
rw rw rw
24 23 22
PUPDR11[1:0]
rw rw rw
8 7 6
PUPDR3[1:0]
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
21 20 19 18
PUPDR10[1:0] PUPDR9[1:0]
rw rw rw rw
5 4 3 2
PUPDR2[1:0] PUPDR1[1:0]
rw rw rw rw
RM0365
18 17 16
OSPEEDR8
[1:0]
rw rw rw
2 1 0
OSPEEDR0
[1:0]
rw rw rw
17 16
PUPDR8[1:0]
rw rw
1 0
PUPDR0[1:0]
rw rw