UM2243 Rev 2 19/41
UM2243 Power supply connections of a target board
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8.1 Settings for use of the Arduino Uno connectors with
Nucleo64 and Nucleo144 use cases
The STM32 Nucleo64 or Nucleo144 target board should be adapted to be powered via the
AREF pin of the Arduino Uno connector (CN3 pin8) prior to connection to the X-NUCLEO-
LPM01A. This adaptation is needed to power supply the STM32 MCU only, so that only the
MCU consumption is measured. In other words, this adaptation removes the consumption of
peripherals such as ST-LINK.
Please refer to the targeted Nucleo board User
Manual to adapt the board to be supplied
from AREF. See example in 15.1: How to adapt an STM32L432 Nucleo-32 to power the
MCU from the Arduino AREF pin.
The power sources and the USB connector of the X-NUCLEO-LPM01A must first be
d
isconnected to avoid any electrical conflict or damage.
Then apply the correct X-NUCLEO-LPM01A jumper settings for JP9, JP10 and JP4,
follow
ing Table 3: Power output related jumper and connector settings, as shown in
Figure 12.
Figure 12. Jumper setting for Arduino with Nucleo target board
Finally, the male pins of connectors CN3, CN4, CN8, CN9 protruding from the bottom side of
the X-NUCLEO-LPM01A board are plugged into the connectors of the Nucleo64 or
Nucleo144 board.
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