This is a USB-to-TTL small board that can use FPC cable to connect to the target class.

Use the common CH340E chip.

This small board can be used with ST-Link V2 without serial port function, convert STM8 SWIM bus to FPC cable,

and provide a serial port for input or output debugging information.

The small board leads to RTS, CTS and TNOW pins that are not used for the time being,

which is convenient for flying leads when needed.

The small board uses the MicroUSB interface.

When using a desktop computer for debugging, you can use the existing data cable to place the small board far away from the host for debugging.

The small board supports 5V and 3.3V.

The back can be soldered with a 2.54mm pitch header, and can also be used as a normal USB to TTL small board when

FPC cable is not necessary.

The small board provides a reset button to reset the target board when there is no reset button on the target board.

The small board provides 3 indicator lights, you can see the working status clearly.