MCU-LINK-PRO VCOM Voltage Range

[LuisC]

Hello,

I just wanted to get a clear answer on whether the VCOM port of the MCU-LINK-PRO Debug Probe can operate at both 3.3V and 1.8V. From the RM, I see that the SPI, I2C and triggering digital signals of the J19 header can be in the range of 1.2V-5.5V. However, I couldn't find any voltage specs for VCOM.

If it is able to receive and transmit UART data at 1.8V (assuming 3.3V is default), do I need to make any modifications (removing jumpers, etc...) for it to work?

[ErichStyger]

See the schematics:

But be aware that the other UART pins are directly connected to the MCU (3.3V):

I hope this helps,

Erich