At the beginning, it can still be DEBUG, but after flashing a few times, it cannot be flashed and locks up
I have already replaced three chips, and the situation is the same
The board I am currently using is powered by a power supply simulator and burned
NXRS has interference here, I don't know where it came from
Confirming that the flash has been constantly resetting, I feel like the RAM has not been tested yet, and the peripheral hardware has been reset normally. I also replaced the capacitor in the circuit with 100NF, but it still cannot be reset. Let's see how this problem occurred and what is the solution?