Table 5. Jumper Configuration - ST STM32U5 Nucleo-64 User Manual

Table 5 explains the different jumper settings and configurations.
Jumper
JP1
JP2
JP3
JP4
JP5
1. The default configuration is in bold.
2. It is recommended to have only one jumper configuration.
UM3062 - Rev 1
Table 5. Jumper configuration
Definition
Debugger selection
STLK_NRST
(2)
5V power selection
IDD measurement
VDD
(1)
Setting
An external debugger can be used on
the MIPI10 connector (CN4). The level
[1-2]
shifter (U2) is in high-Z. STLINK-V3EC
no longer drives the embedded STM32.
STLINK-V3EC is selected as the
OFF
default debugger.
Can be used to reset the STLINK-V3EC
MCU when an external debug probe is
used. Thanks to the U2 level shifter and
[1-2]
JP1, it is not necessary to put STLINK-
V3EC in Reset mode when using an
external debug probe.
Normal mode: Onboard STLINK-V3EC
OFF
debugger used
[1-2] 5V source from STLINK-V3EC (CN1)
5V source from ARDUINO
[3-4]
from CN6 or CN7
5V source from external 5V (E5V) from
[5-6]
CN6 or CN7
5V source from ST-LINK in USB charger
[7-8]
mode without USB negociation (CN1)
5V source from user USB Type-C
[9-10]
(CN3)
No 5V power source. Configuration
OFF
applied when external 3.3 V is used.
VDD_MCU = VDD (3.3 or 1.8 V,
ON
depending on JP5)
An ammeter is used to measure
VDD_MCU power consumption or a
3.3 or 1.8 V external source can
OFF
be connected on pin 2 (STLINK-PWR
tools with STM32CubeMonitor-Power or
ULPBench probe as examples)
VDD voltage selection is 3V3 power
[1-2]
source.
VDD voltage selection is 1V8 power
[2-3]
source
No internal VDD power supply (3.3 or
OFF
1.8 V external voltage needed on pin 2)
UM3062
Default board configuration
Comment
®
VIN 7‑12 V
®
page 8/45