MCU keeps dying at "steval-ctm010v1".

mkim.2 · ‎2022-05-25

hi~

We are testing the motor development kit.

220V in, RS232 cable is connected.

The MCU dies when the debugger is connected.

The debugger connection was not possible, so I connected the C82 capacitor NRST pin to the debugger reset pin.

The debugger connection was not possible, and RS232 communication was not possible, so I checked the MCU and found that it was hot and dead.

What is the problem?

Please reply as soon as possible.

Thank you.

mkim.2 · ‎2022-05-25

input power : 220VAC 60HZ

RRach.2 · ‎2022-08-23

Do not connect power line and debugger together.

You are lucky that the debugger and computer are not dead too.

You need to isolate the computer in order to that.

And do not forget not to touch the board while powered...