STM32G071RB unable to make it work

[lorenzo meneghello_2]

Hi all,

I'm trying to program this new G071RB, is the 3th device that I'm not able to make it work.. In simple word with the virgin device I can see it via Jlink and also I can program it (I've used CubeMX to make simple configuration of pin and program it with uVision, but uC wont start from Main Flash but from System Memory). After power-down and power-up I'm not able to connect with it at all, device death.... I'm already using the F0 family, but I would test this new family G0 there's something wrong in this devices? Thanks.

[MLars.10]

What are the boot pin(s) tied to? Since you are starting from system memory it sounds like the BOOT0 pin is tied to VDD.

[lorenzo meneghello_2]

The boot0 pin is shared with the swd clk, so there’s a pull-down of 10kohm

[TDK]

Are you able to share a schematic? Sounds like a hardware layout fault.

[lorenzo meneghello_2]

[lorenzo meneghello_2]

OK, now I've changed another uC and from virgin with ST Cube programmer I've checked only the BOOT_LOCK box and now it work well! So there's a problem when I flash the memory from 1fff7800 to 1fff787f via uVision..