Help identifying clone MCU and programming method

eminko

10 µW
Joined
May 8, 2025
Messages
5
Location
Türkiye
Hello everyone,


Today I received a new motor controller. I'm already using the same model and bought this one to use for programming purposes. Although both controllers are the same model and brand, one has a XCM-X32 chip, and the new one has a H32X chip.

I didn't worry much since it's clearly a clone, but I’d like to know which chip it is cloned from?
The pin layout is quite different from the STM32F103.

There are 6 unpopulated header pads at the corner of the PCB, and I checked them in continuity mode with a multimeter:

  • GND →pins 9,13, 25, 27, 29, 32,36,38
  • +5V → pin 37
  • CLK → pin 35
  • DAT → pin 33
  • RXD → pin 12
  • TXD → pin 14

I counted the pins starting from the small dot in the bottom-left corner and went clockwise.


I'm attaching a few photos. I would really appreciate any help!
 

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