UM2140 Rev 3
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UM2140
Hardware layout and configuration
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Figure 9. CN8 USB_STLINK connector
5.4.3
Supplying the board from E5V (On CN3 or CN12 connector)
Figure 10. CN8 external 5 V supply
From E5V: 5V DC power adapter connected to CN3
In this case, the 32F723EDISCOVERY board must be powered by a power supply unit or by
auxiliary equipment complying with standard EN-60950-1: 2006+A11/2009 connected to
CN3 and be Safety Extra Low Voltage (SELV) with limited power capability (5 V power source
on E5V silkscreen, refer to
).
From E5V: 7-12V DC power from CN12 VIN
7-12 V DC power supply is provided by an ARDUINO
®
Uno V3 compatible shield connected
to CN11, CN12, CN13, and CN15 connectors.
This 7-12 V VIN voltage is then converted to 5 V by U11 LDO.
Finally, the user must fit the jumper on the E5V position on the CN8 connector, to select this
E5V LDO output as the main power supply for the board. Refer to
MSv44317V1
USB S
TLINK
MSv44318V1
E5V