5.5 STLINK-V3MINIE functions
All functions are designed for high performance. All signals are 1.65 to 3.6 V compatible. The following description
concerns STLINK-V3MINIE except for some mentioned sections and indicates where to find the functions on the
boards and connectors.
5.5.1 SWD with SWV
SWD protocol is a debugging and programming protocol used for STM32 microcontrollers with SWV as a trace.
The signals may perform up to 24 MHz. This function is available on the CN4 connector or the CN2 pad.
5.5.2 JTAG
JTAG protocol is a debugging and programming protocol used for STM32 microcontrollers. The signals may
perform up to 21 MHz. This function is available on the CN4 connector or the CN2 pad.
5.5.3 Virtual COM port (VCP)
The serial interface VCP is directly available as a Virtual COM port of the PC, connected to the STLINK-V3MINIE
CN1 USB connector. This function may be used for STM32 microcontrollers. The signals may perform from
736 bps to 16 Mbps. This function is available on the CN4 connector or the CN2 pad.
For details regarding baud rates, refer to section 14.2. of the user manual STLINK-V3SET debugger/programmer
for STM8 and STM32 (UM2448).
5.5.4 Mass-storage interface
STLINK-V3MINIE implements a virtual mass‑storage interface allowing the programming of an STM32 target
Flash memory with drag-and-drop action of a binary file from a file explorer. This ability requires the STLINK-
V3MINIE tiny probe to identify the connected target before enumerating it on the USB host. As a consequence,
this functionality is available only if the target is connected to the STLINK-V3MINIE tiny probe when it powers up.
The mass storage interface may be disabled or enabled again by reprogramming the ST-LINK firmware. This can
be performed with the STLinkUpgrade application. Activate the <change type> checkbox then select the firmware
with or without mass storage and launch the update. The action is reversible.
5.5.5 LEDs
Power LED: This green light indicates that 5 V is enabled (Not fitted as default).
COM LED: Refer to the technical note Overview of ST-LINK derivatives (TN1235) for details.
UM2910
STLINK-V3MINIE functions
UM2910 - Rev 2
page 9/20
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