RM0453 Rev 5 411/1450
RM0453 General-purpose I/Os (GPIO)
431
10.4.4 GPIOx pull-up/pull-down register (GPIOx_PUPDR) (x = A to B)
Address offset: Block A: 0x000C
Address offset: Block B: 0x040C
Reset value: Block A: 0x6400 0000
Reset value: Block B: 0x0000 0100
10.4.5 GPIOx input data register (GPIOx_IDR) (x = A to B)
Address offset: Block A: 0x0010
Address offset: Block B: 0x0410
Reset value: 0x0000 XXXX
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PUPD15[1:0] PUPD14[1:0] PUPD13[1:0] PUPD12[1:0] PUPD11[1:0] PUPD10[1:0] PUPD9[1:0] PUPD8[1:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
1514131211109876543210
PUPD7[1:0] PUPD6[1:0] PUPD5[1:0] PUPD4[1:0] PUPD3[1:0] PUPD2[1:0] PUPD1[1:0] PUPD0[1:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:0 PUPDy[1:0]: Port Pxy pull configuration (y = 15 to 0)
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
ID15 ID14 ID13 ID12 ID11 ID10 ID9 ID8 ID7 ID6 ID5 ID4 ID3 ID2 ID1 ID0
rrrrrr r r r r rrrrrr
Bits 31:16 Reserved, must be kept at reset value.
Bits 15:0 IDy: Port Pxy input data bit (y = 15 to 0)
These bits are read-only. They contain the input value of the corresponding I/O port.
To Next Page
Loading...
Need help?
General
