General-purpose I/Os (GPIO) RM0453
424/1450 RM0453 Rev 5
10.4.26 GPIOH pull-up/pull-down register (GPIOH_PUPDR)
Address offset: 0x1C0C
Reset value: 0x0000 0000
10.4.27 GPIOH input data register (GPIOH_IDR)
Address offset: 0x1C10
Reset value: 0x0000 000X
Bits 7:6 OSPEED3[1:0]: Port PH3 output speed configuration
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 device datasheet for the frequency specifications and the power supply
and load conditions for each speed.
Bits 5:0 Reserved, must be kept at reset value.
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
Res. Res. Res. Res. Res. Res. Res. Res. PUPD3[1:0] Res. Res. Res. Res. Res. Res.
rw rw
Bits 31:8 Reserved, must be kept at reset value.
Bits 7:6 PUPD3[1:0]: Port PH3 pull configuration
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
Bits 5:0 Reserved, must be kept at reset value.
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
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. ID3 Res. Res. Res.
r
Bits 31:4 Reserved, must be kept at reset value.
Bit 3 ID3: Port PH3 input data bit
This bit is read-only. It contains the input value of the corresponding I/O port.
Bits 2:0 Reserved, must be kept at reset value.
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