STM32C031G4 recognized as STM32G03x/STM32G04x

[Jin454]

Hi. I made a custom PCB with an STM32C031 microcontroller. However, I am unable to program it because it is recognized as 0x466. The problem occurs in both STMCubeProgrammer and the IDE. I checked 2 st-links with the latest firmware.

Regards.

[TDK]

Are you on STM32CubeProgrammer v2.17.0? What programmer are you using?

[Jin454 · Accepted solution]

Yes.
STM32CubeProgrammer v2.17.0.
STM32CubeIDE Version: 1.15.1

Tested on Nucleo St-link and St-link v3.
I can see the device memory, but the device type/id is incorrect.


20:07:42 : STM32CubeProgrammer API v2.17.0 | Windows-64Bits
20:07:44 : UR connection mode is defined with the HWrst reset mode
20:07:44 : ST-LINK SN : 066AFF565251887067053241
20:07:44 : ST-LINK FW : V2J45M30
20:07:44 : Board : NUCLEO-F446ZE
20:07:44 : Voltage : 3.27V
20:07:44 : SWD freq : 4000 KHz
20:07:44 : Connect mode: Hot Plug
20:07:44 : Reset mode : Hardware reset
20:07:44 : Device ID : 0x466
20:07:44 : Revision ID : --
20:07:44 : Debug in Low Power mode is not supported for this device.
20:07:44 : UPLOADING OPTION BYTES DATA ...
20:07:44 : Bank : 0x00
20:07:44 : Address : 0x40022020
20:07:44 : Size : 108 Bytes
20:07:44 : Bank : 0x01
20:07:44 : Address : 0x40022080
20:07:44 : Size : 4 Bytes
20:07:44 : UPLOADING ...
20:07:44 : Size : 1024 Bytes
20:07:44 : Address : 0x8000000
20:07:44 : Read progress:
20:07:44 : Data read successfully
20:07:44 : Time elapsed during the read operation is: 00:00:00.012

[Maryem]

Hello @Jin454 ,

I tried connecting an STM32C031 and the device ID is correctly displayed on my end.

Could you please try reading data at @ 0x40015800 as shown below and let me know the value? 

Thank you in advance,

Maryem.

[Jin454]

I found the cause of the problem.

[TDK]

What was the cause of the problem? It helps to put it here to close out the thread and make it useful for others.