Mini DapLink Reduced Version: Tesskinny Depp Link

This design references
the firmware download tutorial at https://oshwhub.com/legend-tech/dap-link-ch32v203f6. See the link for details. There is a resistor marked NC on the back that should not be soldered. When downloading, short it with tweezers before plugging in the USB.
 
This schematic is basically a redrawn version, changed to a 0402 package.
Application suggestion:
We recommend soldering a female header under the DapLink for easy insertion and removal from your core board or design.
The cost of making this DapLink yourself should be around 3 RMB (excluding board and processing costs). Cost control is mainly about integrating this design into your finished product.
You can basically keep our DapLink plugged into a USB-C cable and use it as an adapter.
Integrating it into your own design allows you to replace the LDO as needed. We used the RT9013-33 purely for smart car design. Regarding
precautions and improvements,
our dapLink doesn't have ESD protection; I forgot about it after drawing it. Originally, I just intended it as a verification board, but since I plan to integrate this circuit into my personal design later, I decided to draw a board first for verification.
Differential signal lines weren't drawn because it's unnecessary (the distance is too short). If you're integrating it into your design, you should set the USB to differential pairs if necessary, although the speed is so slow it's practically negligible .
Please see the JPG:
Figure 2 is an image I used to download programs to a cheap 32-pin board; this usage method can be used as a reference.
 
I might update to a faster version later, but I feel this is sufficient.