TARGET_HELD_UNDER_RESET

[zsx]

Hello, im using STM32f410CBT3 on custom board. I was able to debug before, but now Im getting errors trying to conect to STM32 using stlink v3 set with isolation. Sometimes i can read data, but it is corrupted (all 0, but i didnt flashed it yet). Tried replacing CPU, but it didnt work. The nRST is conected with capasitor to gnd and i tried adding pull up with 10k (this cpu has pull up inside).

 Im desperate for help.

Thank you all in advance.

 

When measuring voltage on Nrst, it shows 0,6 V. I gues it is floating, but why...

[Tesla DeLorean]

Show the salient parts of the schematic for this custom board.

Do you have Analogue VDD/VSS connected? VDDA / VSSA needed regardless of ADC/DAC usage

Check chip orientation

Check 1.25V at VCAP pins, 2u2 F on each, or 4u7 F on connected?

 

[zsx]

Everything is conected. What is most interesting for me, is that i was able to program it few weeks ago, but then my programmer shorted, so i bought new one and this started to happen

[Tesla DeLorean]

If NRST is low it suggest something is wrong internally or the supplies.

Try replacing the chip, or a second board..