2024-02-28 08:40 AM
2024-02-28 09:41 AM - edited 2024-02-28 09:45 AM
You're imagery is far from clear. Perhaps you can enumerate what you think the markings are, or take a better picture in focus or macro mode?
C146 or C14B << These will be the product marking
PH9R << Fab
7B1Z << Package/Test Date
20 / 24-pin ? Identify pin level connectivity to power, ground, GPIO, UART, programming headers.
Sure it's an MCU, not an IMU or anything else? What's the context?
2024-02-28 01:09 PM
Probably STM32C011F6 ... because it is image of Discovery kit with STM32C011F6
https://www.st.com/en/evaluation-tools/stm32c0116-dk.html
2024-02-28 09:04 PM
Try to find the schematics for your board and you would know...
BTW: what an "ugly looking board" is this? It looks like "hand soldered" (too much solder on MCU pins, cap is not straight...).
If I count the "MCU pins": 20, so as LQFP20 or QFN20: which STM MCU has this package? Not so much.
If so, it could be just a "tiny" MCU, e.g. a Cortex-M0/M0+.
Yes, it looks like the:
STM32C0116-DK - Discovery kit with STM32C011F6 MCU - STMicroelectronics
but hard to imagine that the soldering of STM boards is so "bad".
Where did you get the board from?