6.3 Embedded STLINK-V3E
The chapter below gives some information about the implementation of STLINK-V3E on this STM32U5
Nucleo-144 board. For details information about ST-LINK capabilities, LED management, driver, and firmware
for this STLINK-V3E, refer to the technical note Overview of ST-LINK derivatives (TN1235).
For information about debugging and programming features of STLINK-V3E, refer to the user manual STLINK-
V3SET debugger/programmer for STM8 and STM32 (UM2448).
6.3.1 Description
There are two different ways to program or debug the onboard STM32 MCU.
• Using the embedded STLINK-V3E
• Using an external debug tool connected to the STDC14/MIPI10 connector (CN5)
Refer to Table 5 to switch between STLINK-V3E or STDC14 configuration.
The STLINK-V3E facility for debugging and flashing is integrated into the STM32 Nucleo-144 board.
Features supported in STLINK-V3E:
• 5 V / 500 mA power supplied by the USB connector (CN1)
• USB 2.0 high-speed compatible interface
• Serial Wire Debug (SWD) with Serial Wire Viewer (SWV)
• Virtual COM port (VCP)
• 1.7 to 3.6 V application voltage
• COM status LED which blinks during communication with the PC
• USB overcurrent protection (U2)
One tricolor LED, (green, orange, and red) provide information about STLINK-V3E communication status (LD4).
For details information about this LED, refer to the technical note Overview of ST-LINK derivatives (TN1235).
Table 6 describes the USB Micro-B connector (CN1) pinout.
Table 6. USB Micro-B connector (CN1) pinout
Pin
Pin name Signal name STLINK-V3E STM32 pin Function
1 VBUS 5V_USB_CHGR - VBUS Power
2 DM USB_DEV_HS_CN_N PB14 DM
3 DP USB_DEV_HS_CN_P PB15 DP
4 ID - - ID
5 GND GND GND GND
6.3.2 Drivers
The driver installation is not mandatory for Windows
®
10 but allocates an ST-specific name to the ST-LINK COM
port in the system device manager.
For details information regarding the ST-LINK USB driver, refer to the technical note Overview of ST-LINK
derivatives (TN1235).
6.3.3 STLINK-V3E firmware upgrade
STLINK-V3E embeds a firmware upgrade (stsw-link007) mechanism through the USB port. As the firmware might
evolve during the lifetime of the STLINK-V3E product, to add new functionalities, fix bugs, and support new
microcontroller families, it is recommended to visit the www.st.com website before starting to use the STM32U5
Nucleo-144 board and periodically, to stay up-to-date with the latest firmware version.
For details information about firmware upgrades, refer to the technical note Overview of ST-LINK derivatives
(TN1235).
UM2861
Embedded STLINK-V3E
UM2861 - Rev 5
page 13/49
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