Hello all, i want to develop my own arduino mega board , i refered schematic available on arduino website along with eagle file , in this schematic atmega16u-mu is used as usb serial bridge , but i want to use ch340 as usb serial bridge which is used in clone boards. can any body provide interfacing diagram which use ch340 with atmega2560 16-au
Have you tried the vendor site? CHN carries the info on ch34x and Microchipdirect on the MegaXXX lines.
Can you not copy the circuit of another AVR / CH340 design ? Here, for example, is a Nano/CH340 schematic: