ST X-NUCLEO-LPM01A User Manual

UM2243 Rev 2 17/41
UM2243 Power supply connections of a target board
40
8 Power supply connections of a target board
The X-NUCLEO-LPM01A can power supply a target board from 1.8 V to 3.3 V and measure
its consumption (current, power, energy) using one of the following connections:
• Arduino Uno connector (CN3, C
N4, CN8, CN9) either:
– by the pin 3.3 V
– by the pin AREF
• Arduino Nano connector (CN12, CN13) either:
– by the pin 3.3 V
– by the pin AREF
• Basic connector (CN14) for wire con
nection to any target.
See Figure 2: Hardware block diagram for an overview of the power output distribution on
the Arduino 3.3V pin or Arduino AREF or generic connector (CN14), and the related jumper
con
nection. See Figure 3: X-NUCLEO-LPM01A layout top view for connector and jumper
locations.
Note: Power supply to a target board though Arduino Uno, or Nano connectors via the AREF
po
wer pin is not common but is specifically suitable for STM32 Nucleo32, Nucleo64 and
Nucleo144 boards. It allows, after a few modifications to the Nucleo target board, to power
supply only the STM32 MCU. In other words, it allows the removal of quiescent or leakage
current of board peripherals (like the on board ST-LINK debugger, voltage regulator, and so
on) without removing peripheral ICs from the target board.
Reciprocally, power supplied to a target board
through Arduino Uno, or Nano via the +3.3 V
power pin supplies the complete target board and its peripherals.'
Table 3. Power output related jumper and connector settings
Power output on
Output connectors and
pi
ns
JP9
AREF_ARD
jumper
JP10
3V3_ARD
jumper
JP4
Additional decoupling capacitor
jumper
Arduino Uno
conn
ector,
pin 3V3
3V3: CN4 pin4
GND: CN4 pin6 or pin7
open closed
Open: no decoupling capacitor
Closed: 2.2 µF decoupling capacitor
Arduino Uno
conn
ector,
pin AREF
AREF: CN3 pin8
GND: CN4 pin6 or pin7
closed open
Open: no decoupling capacitor
Closed: 2.2 µF decoupling capacitor
Arduino Nano
conn
ector,
pin 3V3
3V3: CN13 pin14
GND: CN13 pin2
open closed
Open: no decoupling capacitor
Closed: 2.2 µF decoupling capacitor
Arduino Nano
conn
ector,
pin AREF
AREF: CN13 pin13
GND: CN13 pin2
closed open
Open: no decoupling capacitor
Closed: 2.2 µF decoupling capacitor
Basic connector
CN14
Vout: CN14 pi
n3
GND: CN14 pi
n1
open open
Open:
no decoupling capacitor
Closed: 2.2 µF decoupling capacitor

ST X-NUCLEO-LPM01A Specifications

General

Brand	ST
Model	X-NUCLEO-LPM01A
Category	Control Unit
Language	English