Figure 9.
SW1 and JP7 TNRST default configurations
Table 4.
SW1 configuration
Pin number
Function
STLINK-V3E description
State
Comment
1
PWREXT
T_PWR_EXT (PB1)
ON
or OFF
Connect
or isolate STLINK-V3E from
general 5V power presence indicator
2
VCCAIN
T_VCC_AIN (PA0)
ON
or OFF
Connect
or isolate STLINK-V3E from
general 3V3 power presence indicator
3
GNDDET
GND detection (PG5)
ON
or OFF
Connect
or isolate STLINK-V3E from
debug connector
4
TVCP_ RX
STLK_VCP_TX (PG14)
ON
or OFF
Connect
or isolate STLINK-V3E from
STM32
5
TVCP_TX
STLK_VCP_RX (PG9)
ON
or OFF
Connect
or isolate STLINK-V3E from
STM32
6
TSWO
T_SWO (PD2)
ON
or OFF
Connect
or isolate STLINK-V3E from
STM32
7
TSWCLK
T_SWCLK (PH6)
ON
or OFF
Connect
or isolate STLINK-V3E from
STM32
8
TSWIO
T_SWDIO_IN (PH7) /
T_SWDIO_OUT (PF9)
ON
or OFF
Connect
or isolate STLINK-V3E from
STM32
1. ON (Default setting) means the switch is in Low physical position (L marking onboard), OFF means the switch is in High
physical position (H marking onboard)
Table 5.
JP7 TNRST configuration
Reference
Function
Comment
ON
T_NRST (PA6)
STLINK-V3E output reset connected to T_NRST of STM32
OFF
STLINK-V3E output reset isolated from T_NRST of STM32
1. The default setting is in bold.
2. In case JP7 is ON, JP6 must be OFF.
In case USB Type-C
®
connector is used to power the board (JP5 USBC setting), it is also possible to disconnect
the STLINK-V3E power, unsoldering the SB31 solder bridge. In that case, ensure all signals are previously
disconnected (SW1 in ALL OFF position, and JP7 OFF).
9.3
STLINK-V3E drivers
Before connecting the Discovery board to a Windows PC via USB, a driver for the STLINK-V3E must be installed.
It is available on the
In case the Discovery board is connected to the PC before the driver is installed, some Discovery board interfaces
may be declared as “unknown” in the PC device manager. In this case, the user must install the driver files, and
update the driver of the connected device from the device manager (See
Note:
Prefer using the “USB Composite Device” handle for a full recovery.
UM2577
STLINK-V3E drivers
UM2577
-
Rev 2
page 16/54
