Table 4. Power Supply Related Jumpers Settings - ST STM32L4R9I-EVAL User Manual

UM2248
Jumper /
solder
bridge
JP11
Power
source
selector
JP8
Vbat
connection
JP10
VDD_MCU
connection
JP1
VDD_USB
connection

Table 4. Power supply related jumpers settings

Setting
STM32L4R9I-EVAL is supplied through the CN18 power
jack (marked PSU_DC5V). CN5 and CN6 extension
connectors do not pass the 5 V of STM32L4R9I-EVAL to the
daughterboard.
E5V U5V STlk D5V
STM32L4R9I-EVAL is supplied through the CN3 Micro-AB
USB connector. CN5 and CN6 extension connectors do not
pass the 5 V of STM32L4R9I-EVAL to the daughterboard.
E5V U5V STlk D5V
Default setting.
STM32L4R9I-EVAL is supplied through the CN21 Micro-B
USB connector. CN5 and CN6 extension connectors do not
E5V U5V STlk D5V
pass the 5 V of STM32L4R9I-EVAL to the daughterboard.
STM32L4R9I-EVAL is supplied through pin 39 of CN5 and
pin 39 of CN6 extension connectors.
E5V U5V STlk D5V
STM32L4R9I-EVAL is supplied through the CN18 power
jack. CN5 and CN6 extension connectors pass the 5 V of
STM32L4R9I-EVAL to the daughterboard. Make sure to
disconnect from the daughterboard, any power supply that
STlk D5V
E5V U5V
may generate conflict with the power supply on the CN18
power jack.
1 2 3
Vbat is connected to the battery.
Default setting.
1 2 3
Vbat is connected to VDD.
Default setting.
1 2 3
VDD_MCU (VDD terminals of STM32L4R9AII6) is
connected to fixed +3.3 V.
VDD_MCU is connected to voltage in the range from
1 2 3
+1.71 V to +3.6 V, adjustable with potentiometer RV3.
Default setting.
1 2 3
VDD_USB (VDD USB terminal of STM32L4R9AII6) is
connected with VDD_MCU.
1 2 3
VDD_USB is connected to +3.3 V.
UM2248 Rev 4
Hardware layout and configuration
Configuration
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