2.10.1 USB Pins

Signal NameRecommended Pin ConnectionDescription
VBG-Bias Voltage Reference for USB

To reduce the noise on the VBG pin to a minimum, implement the layout considerations below:

  • Keep the VBG path as short as possible
  • Ensure a ground connection to GNDUTMI

VBG can be left unconnected if USB is not used.

HSDM / HSDPApplication dependent (1,2) USB High-Speed Data

Pull-down output at reset.

USB Host and Device Interface recommendations can be found in the "Basic 32-Bit MCU Design and Troubleshooting Checklist" on the Microchip web site.