SPRACU5C June 2021 – September 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
USB0 interface supports boot. When the USB0 is configured for DFU boot mode, 3.3 V supply (permanent or switched) is not recommended to be connected to the USB0_VBUS pin. No permanent supply (equivalent to the divider value) is allowed to be connected to the USB0_VBUS.
A 5 V supply from the host (switched) connected through the USB connector is recommended to be connected to the processor through the resistor voltage divider as per the device-specific data sheet recommendations. The Zener diode could be removed and a 20 kΩ resistor could be substituted for the 16.5 kΩ and 3.5 kΩ resistors if the board will never apply a VBUS potential greater than 5.5 V and the supply is on-board.
USB0_VBUS is fail-safe input. The fail-safe input is valid only if the VBUS supply is connected through recommended VBUS supply divider circuit.