Datasheet

Functional overview STM32F765xx STM32F767xx STM32F768Ax STM32F769xx
28/255 DocID029041 Rev 6
disappear. The following conditions V
DDUSB
must be respected:
– During the power-on phase (V
DD
< V
DD_MIN
), V
DDUSB
should be always lower
than V
DD
– During the power-down phase (V
DD
< V
DD_MIN
), V
DDUSB
should be always lower
than V
DD
–The V
DDUSB
rising and falling time rate specifications must be respected (see
Table 20 and Table 21)
– In operating mode phase, V
DDUSB
could be lower or higher than V
DD:
- If 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
supply 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 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 4. V
DDUSB
connected to V
DD
power supply
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