CH340-UART

This is a cheap alternative IC for the FTDI chip to provide UART over USB.

Manufacturer: WinChipHead

Datasheet:

• CH340DS1 File:CH340DS1.PDF

USB information

Vendor ID: 1A86

Device ID: 7523

REV: 0254

Manufacturer information

Manufacturer: Jiangsu Nanjing QinHeng Electronics Co

Websites: http://www.wch-ic.com and http://www.wch.cn and http://www.winchiphead.com

Software/Drivers

Drivers: http://www.wch.cn/download/CH341SER_ZIP.html

Locally hosted driver for Windows 7: File:UART CH341 W7.ZIP

I had success with these drivers on a $3 (YES!) Arduino Nano clone board from China.

CH340 chip on Nano clone

Alternate links

• http://www.5v.ru/ch340g.htm