CH340G – alternative USB to serial IC

Hey, sorry everyone, I know it’s been a while. But I hope this post will make up for that! Anyone who has done embedded programming knows that an easy way for microcontrollers (like arduino) to connect  to a PC is through a serial connection. Unfortunately, not many computers have a serial port these days, and while are a lot of chips that will act like a usb-serial converter, they tend to be somewhere in the $3-5 range.

CH340G – alternative USB to serial IC

However, I found one chip, the CH340G, that only costs 40 cents! You can buy it on places like Aliexpress. The only problem is getting a working schematic. The company only releases a datasheet for the CH340T and CH340R versions of the chip. By trawling through several sites, I managed to create a pinout, an eagle part, and example schematics for the CH340G. Here they are!

About The Author

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.

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