ST STM32F446 Series User Manual

RM0390 Rev 4 189/1328
RM0390 General-purpose I/Os (GPIO)
194
7.4.4 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
• 0x0000 0000 for other ports
7.4.5 GPIO port input data register (GPIOx_IDR) (x = A..H)
Address offset: 0x10
Reset value: 0x0000 XXXX (where X means undefined)
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PUPDR15[1:0] PUPDR14[1:0] PUPDR13[1:0] PUPDR12[1:0] PUPDR11[1:0] PUPDR10[1:0] PUPDR9[1:0] PUPDR8[1:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
1514131211109876543210
PUPDR7[1:0] PUPDR6[1:0] PUPDR5[1:0] PUPDR4[1:0] PUPDR3[1:0] PUPDR2[1:0] PUPDR1[1:0] PUPDR0[1:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 2y:2y+1 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
00: No pull-up, pull-down
01: Pull-up
10: Pull-down
11: Reserved
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
IDR15 IDR14 IDR13 IDR12 IDR11 IDR10 IDR9 IDR8 IDR7 IDR6 IDR5 IDR4 IDR3 IDR2 IDR1 IDR0
rrrrrr r r r r rrrrrr
Bits 31:16 Reserved, must be kept at reset value.
Bits 15:0 IDRy: Port input data (y = 0..15)
These bits are read-only and can be accessed in word mode only. They contain the input
value of the corresponding I/O port.

ST STM32F446 Series Specifications

General

Brand	ST
Model	STM32F446 Series
Category	Microcontrollers
Language	English