User's Manual

23
PIO
USB_D+
USB_D-
USB_ON
R =1.5kΩ
R
R
WT12
Figure 12: USB in self powered mode
The terminal marked USB_ON can be any free PIO pin. The PIO pin selected must be
registered by setting PSKEY_USB_PIO_VBUS to the corresponding pin number.
In self powered mode PSKEY_USB_PIO_PULLUP must be set to match with the PIO
selected.
Note:
USB_ON is shared with WT12 PIO terminals (PIO2-PIO7).