To what voltage should the D+ line be pulled up when designing USB connection in STM32? +5V or +3.3V? All documentation and dev board scematics says it's 3.3V, but it didn't work.
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USB Dedicated Charging Port Controller and Power Switch. datasheet (Rev. A)
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APPLICATION NOTE
Protection of USB 2.0 Applications Series: ESD Device Tests and Layout Recommendations for USB Ports | Würth Elektronik: Electronic & Electromechanical Components > News > Blog: World of Electronics
USB charging without fear
Protect USB Ports From Nefarious “USB Killers" | Bench Talk
usb device - (Mini)USB keyboard has D- default high - Electrical Engineering Stack Exchange
Isolating USB
High-Speed USB 2.0 1:2 Multiplexer/Demultiplexer Switch With Single Enable* datasheet (Rev. F)
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Battery Charging with USB - Developer Help
ON Semiconductor Is Now
ARM: USB Low-Speed Device on NXP LPC1800/4300 USB0 Host
USB charging without fear
TPS251xx USB Dedicated Charging Port Controller datasheet (Rev. D)
USB dedicated charging port (DCP) controller BL2513M
What is the exact voltage of a standard USB data signal in either data wire? I'd assume they are the same. I know that the power wires are 5 volts. - Quora
USB charging without fear
USB (Communications) - Wikipedia
