SWD can not connect to target

[FMrkv.1]

Hi, I can not connect to my STM32F767ZIT on custom PCB.

It is frustrating as everything seems to be fine:

• MCU is powered properly with 3,3 V and it is drawing some power
• all ST-LINK pins are correctly connected

I was trying to use ST-LINK and Cube Programmer, they work with another board so the problem is not with these programs or with drivers. I was also trying to use multiple ST-LINKs, but I had the same result with all of them.

It seems that the problem is with board or maybe I used wrong settings in ST-LINK utility? I was trying multiple modes, frequencies and reset modes, also I used default settings which should be fine?:

• address: 0x08000000
• size: 0x1000
• data width: 32 bits

Thank you for any advice!

[ughr1]

check if you did not disable SWD or you did not sleep MCU, try flash with BOOT0=HIGH

[TDK]

It's more likely to be a hardware issue than incorrect settings in STM32CubeProgrammer. Check for correct connections, solder bridges. Show the schematic if you can.