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My MCU is stm32L432kc. I've concluded that we need a minimum of 4 connections: SWCLK, SWIO, vcc and gnd. Can someone from here confirm that?
And another question is I'm confused how to connect the Vdda/Vref+ pin 5 and the NRST pin4. Do I have to connect them? I have the schematic of nucleo board for my MCU attached. Should I just connect them the same way?