ST STM32WB07 Manual page 12

7.1 Power supply
7.1.1 General description
By default, the STM32WB07CC embedded on this Nucleo board is supplied by 3V3 but the board proposes many
possibilities to supply the module. In fact, at first, the 3V3 can come from ST-LINK USB, ARDUINO
morpho connectors. Moreover, STM32WB07CC can be supplied by an external source (between 1.8 and 3.3 V).
Thanks to level shifters, debugging by embedded ST-LINK is always possible even if the supply voltage of the
target is different than 3V3 (ST-LINK supply).
default state of the jumpers and the solder bridges.
AVDD (CN11-1)
Arduino® AVDD (CN6-8)
ST Morpho AVDD (CN4-7)
VBUS_STLK
(CN15-A4/A9/B4/B9)
Arduino® VIN (CN5-8)
ST Morpho VIN (CN3-24)
External (CN10-1)
ST Morpho 5V_EXT (CN3-6)
5V_USB MCU (CN9 if mounted)
5V_USB MCU (CN4-8)
* OVCP: Over Voltage and Current Protection
7.1.2 7 to 12 V power supply
A 7 to 12 V DC power source can power NUCLEO-WB07CC. There are three accesses for this type of level:
• Pin VIN of the ARDUINO
ARDUINO
• Pin VIN of the ST morpho connector (CN3-24). It is possible to apply until +12 V on this pin like for the
ARDUINO
• External input (CN10). Be careful, in this case, the states of the jumpers and solder bridge are significant. A
solder bridge configuration might allow a direct supply of STM32WB07, with a high risk of destruction if
above 3.3 V. Refer to
These sources are connected to a linear low‑drop voltage regulator (U3). The output of this 5 V regulator is a
potential source of the 5V signal. For further details, refer to the next section.
UM3344 - Rev 1
Figure 7.
U11
3V3_STLK
LDO_3V3
U10
5V_STLK
OVCP*_5V
VBUS_STLK
U3
LDO_5V
SB20
OFF
SB21
SB33
ON
ON
SB22
OFF
®
connector (CN5-8). It is possible to apply until +12 V on this pin or use an
®
shield, which can deliver this type of voltage on the VIN pin.
®
connection.
Figure 7 and Table
Figure 7 shows the power tree. Moreover, this figure also shows the
STM32WB07CC power tree
MB1801D
VDDA
U5
VDD
STM32F7
VDD
JP1 [1-2]
VDD
VDD
ON
JP1 [9-10]
OFF
JP1 [5-6]
3V3
OFF
U4
5V LDO_3V3
JP1 [7-8]
OFF
V_Target
JP1 [3-4]
OFF
4.
UM3344
Hardware layout and configuration
®
, or ST
MB2119
20
VDD1
2 2
VDDRF
VDDSD
SB21
STM32WB07
VDD3
18 18
VFBSD
VDD4
30 30 OFF
VDD1/2/3/4
4
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