Datasheet

DocID028479 Rev 1 23/121
STM32F722xx STM32F723xx Functional overview
43
than V
DD
–The V
DDUSB
rising and falling time rate specifications must be respected
– In the operating mode phase, V
DDUSB
could be lower or higher than V
DD:
- If the USB (USB OTG_HS/OTG_FS) is used, the associated GPIOs powered by
V
DDUSB
are operating between V
DDUSB_MIN
and V
DDUSB_MAX
.
- The V
DDUSB
supplies both USB transceiver (USB OTG_HS and USB OTG_FS).
If only one USB transceiver is used in the application, the GPIOs associated to the
other USB transceiver are still supplied by V
DDUSB
.
- If the USB (USB OTG_HS/OTG_FS) is not used, the associated GPIOs powered
by V
DDUSB
are operating between V
DD_MIN
and V
DD_MAX
.
Figure 7. V
DDUSB
connected to V
DD
power supply
Figure 8. V
DDUSB
connected to external power supply
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