Hi,
Of course, the MCU-LINK device supports 1.8V logic, but you have change the default configuration on the MCU-LINK probe device.
1)R16 may be removed
2) SJ1 changed to connect to position 1-2
3)The pin1 of J6 must provide 1.8V voltage driven from target board as a reference voltage on the MCU-LINK probe board
Pls refer to section 5.1
5.1 Target operating voltage and connections
The MCU-Link Base Probe cannot power a target system, so uses a sensing circuit (see page 4 of the schematic) to detect the target supply voltage and set up level shifter voltages accordingly. It should not be necessary to make any modifications to this circuit, but there is a pull up resistor (33kΩ) to the 3.3V supply of the MCU-Link. If issues are seen with the target system supply being affected by the MCU-Link being connected then R16 may be removed and SJ1 changed to connect to position 1-2. This will fix the level shifters at the voltage level seen at pin 1 of the SWD connector, and require that the target supply can support the VCCB input requirements of the level shifter devices. It is not recommended to make these modifications until/unless the target system has been carefully checked to see that the correct reference/supply voltage is present on pin 1 of the SWD connector (J6).
i attach UM11931.pdf
Hope it can help you
BR
XiangJun Rong
