The product is a Chinese clone and may come with the integrated circuit CH32F103C8T6 or similar.
Although it is equivalent to STM32F103C8T6, the chip does not have STM32F103C8T6 written on it.
It is a core board that houses the STM32F103C8T6 ARM processor.
It contains 8MHz and 32.768Khz crystal circuits.
It is powered via the USB port
I/O pin outputs are provided on two lines similar to Arduino nano.
You can easily debug with the SWD simulation debug download interface.
You can communicate with the board thanks to the Micro USB interface.
The RTC crystal is of Epson brand, easy and stable. < Show More