https://community.nxp.com/t5/LPC-Microcontrollers/MCU-LINK-PRO-VCOM-Voltage-Range/m-p/1676238#M53240 <P>See the schematics:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ErichStyger_0-1687798416108.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/229361i8819134391747140/image-size/medium?v=v2&amp;px=400" role="button" title="ErichStyger_0-1687798416108.png" alt="ErichStyger_0-1687798416108.png" /></span></P><P>But be aware that the other UART pins are directly connected to the MCU (3.3V):</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ErichStyger_1-1687798509050.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/229403i1FCF5143352A7F34/image-size/medium?v=v2&amp;px=400" role="button" title="ErichStyger_1-1687798509050.png" alt="ErichStyger_1-1687798509050.png" /></span></P><P>&nbsp;</P><P>&nbsp;</P><P>I hope this helps,</P><P>Erich</P> Mon, 26 Jun 2023 16:55:18 GMT ErichStyger 2023-06-26T16:55:18Z https://community.nxp.com/t5/LPC-Microcontrollers/MCU-LINK-PRO-VCOM-Voltage-Range/m-p/1676146#M53239 <P>Hello,</P><P>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.</P><P>&nbsp;</P><P>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?</P> Mon, 26 Jun 2023 15:59:58 GMT https://community.nxp.com/t5/LPC-Microcontrollers/MCU-LINK-PRO-VCOM-Voltage-Range/m-p/1676146#M53239 LuisC 2023-06-26T15:59:58Z https://community.nxp.com/t5/LPC-Microcontrollers/MCU-LINK-PRO-VCOM-Voltage-Range/m-p/1676238#M53240 <P>See the schematics:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ErichStyger_0-1687798416108.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/229361i8819134391747140/image-size/medium?v=v2&amp;px=400" role="button" title="ErichStyger_0-1687798416108.png" alt="ErichStyger_0-1687798416108.png" /></span></P><P>But be aware that the other UART pins are directly connected to the MCU (3.3V):</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ErichStyger_1-1687798509050.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/229403i1FCF5143352A7F34/image-size/medium?v=v2&amp;px=400" role="button" title="ErichStyger_1-1687798509050.png" alt="ErichStyger_1-1687798509050.png" /></span></P><P>&nbsp;</P><P>&nbsp;</P><P>I hope this helps,</P><P>Erich</P> Mon, 26 Jun 2023 16:55:18 GMT https://community.nxp.com/t5/LPC-Microcontrollers/MCU-LINK-PRO-VCOM-Voltage-Range/m-p/1676238#M53240 ErichStyger 2023-06-26T16:55:18Z