STM32W108CBU6 STMICROELECTRONICS [STMicroelectronics], STM32W108CBU6 Datasheet - Page 54

• Manufacturer Part Number: STM32W108CBU6
• Description: High-performance, IEEE 802.15.4 wireless system-on-chip
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

General-purpose input/outputs
6.5
6.5.1
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Px3_CFG
[15:12] Px3_CFG: GPIO configuration control.
[11:8] Px2_CFG: GPIO configuration control: see Px3_CFG above.
Table 8.
1. Default signal assignment (not remapped).
2. Overrides during reset as an input with pull up.
3. Overrides after reset as an open-drain output.
4. Alternate signal assignment (remapped).
5. Overrides in JTAG mode as an input with pull up.
6. Overrides in JTAG mode as a push-pull output.
7. Overrides in Serial Wire mode as either a push-pull output, or a floating input, controlled by the debugger.
General-purpose input / output (GPIO) registers
Port x configuration register (Low) (
Address offset: 0xB000 (GPIO_PACFGL), 0xB400 (GPIO_PBCFGL) and 0xB800
(GPIO_PCCFGL)
Reset value:
[7:4] Px1_CFG: GPIO configuration control: see Px3_CFG above.
[3:0] Px0_CFG: GPIO configuration control: see Px3_CFG above.
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GPIO
PC6
PC7
0x0: Analog, input or output (GPIO_PxIN always reads 1).
0x1: Output, push-pull (GPIO_PxOUT controls the output).
0x4: Input, floating.
0x5: Output, open-drain (GPIO_PxOUT controls the output).
0x8: Input, pulled up or down (selected by GPIO_PxOUT: 0 = pull-down, 1 = pull-up).
0x9: Alternate output, push-pull (peripheral controls the output).
0xB: Alternate output SPI SCLK, push-pull (only for SPI master mode SCLK).
0xD: Alternate output, open-drain (peripheral controls the output).
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GPIO signal assignments (continued)
27
11
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0x0000 4444
OSC32B
OSC32A
Analog
26
10
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Px2_CFG
25
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9
nTX_ACTIVE
Doc ID 16252 Rev 2
Alternate function
24
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8
23
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7
GPIO_PxCFGL)
22
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6
Px1_CFG
OSC32_EXT
21
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5
STM32W108CB, STM32W108HB
Input
20
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4
19
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3
18
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2
Px0_CFG
Output current
Standard
Standard
drive
17
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1
16
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0