UC00C (CH340) USB to UART Converter

UC00C (CH340) USB to UART Converter

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USB Micro B Cable

USB Micro B Cable

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  • รหัสสินค้า: UC00C
  • ระยะเวลาในการรับประกัน: 12 เดือน
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UC00C is a low cost alternative to the popular FTDI USB to UART converter. It even works with both 3.3V and 5V systems.

Serial communication, particularly UART (Universal Asynchronous Receiver and Transmitter), is one of the most commonly used communication protocol for computers, microcontrollers and sensors. Some Arduino main boards have USB to UART converter built-in in order to facilitate the program uploading process. So when you connect an Arduino Uno to computer via USB cable, you will see a virtual COM port appears in your computer. In Windows OS, you can check in Device Manager, under Ports (COM & LPT) category.

Some of you may ask what's the difference between UC00A and UC00C? UC00A uses the all-time favourite FTDI chip. Its exceptional reliability provides the peace-of-mind solution you need in all circumstances. UC00C on the other hand is a low cost alternative which just get its job done at a fraction of the cost of FTDI counterpart. UC00C also should auto install on most operating systems without the need for additional drivers. UC00C is tested to work well on Windows 7, 8, 8.1 and 10. You will definitely see at least one or two UC00A and/or UC00C on our engineers' work desk because they are among the most important yet convenient tools for our day to day development.

3.3V or 5V Voltage Level Selection Switch

UC00C is equiped with a slide switch for instant voltage selection between 3.3V and 5V. Sliding this switch to either side will set UC00C to output the selected voltage on Vcc and signal lines. Using a USB to UART converter to troubleshoot two different logic level systems (eg: Arduino Uno and Raspberry Pi) has never been easier!

Voltage level selector
Slide switch to select between 3.3V and 5V voltage level

Please note that when the slide switch is set to 5V, the board will source as much power as your USB port will provide. When it is set to 3.3V, the maximum current UC00C can provide is limited to 500mA.

LED Indicators

UC00C also has two LEDs built-in for instant reference when you need to know whether the serial lines are active/busy. Red LED is used for TX line while RX line is indicated with Orange LED.

LEDs for serial traffic indication
LEDs for serial traffic indication

UC00C Pinouts

UC00C pinoutsUC00C pinout description


  • CH340 USB to UART chip.
  • Low cost yet easy-to-use USB to UART converter.
  • For development and/or debugging between the computer and microcontroller
  • USB powered, no external source is required to use this converter.
  • Selectable 3.3V and 5V UART interface. 
  • Common 6-pin interface: DTR, RXD, TXD, VCC, CTS and GND.
  • 6 ways header socket for bootloading code into Arduino compatible board (BBFuino, Arduino Pro Mini 328, Arduino Fio & etc.)


  • 39.8 x 21.2 x 5.6 mm 

Packing List: 

  • 1x UC00C (CH340) USB to UART Converter 


can i use this with raspberry pi zero? ( Sha, 30/10/2020 )
Hi. Yes, you can use this with rpi zero. Thanks :)
i want build my own arduino board so can i use this TTL to burn program into ?
( Sanjjiev apparao, 28/06/2019 )
Hi, you may refer to this link on how to do it.
hi can i use this item to flash my esp8266 firmware.?
now i'm using usb uart fdti, but it give fail to connect..
( m qayyum , 04/05/2018 )
Hi, yes UC00C can be used to flash ESP8266. For further questions, please visit to our technical forum for similar question or post your question there, as this session is only for short inquiry. Thanks.
Hi...can this device use to download arduino uno sketch to a DIY uno board using the FTDI port? ( azhar, 14/12/2017 )
Hi, yes you can upload Arduino sketch to your DIY Arduino Uno board. FYI, this board is using CH340G, not FTDI. Just install correct driver, it will work. For further questions, please visit to our technical forum for similar question or post your question there, as this session is only for short inquiry. Thanks.
May I know what max current this device can support from USB adapter charger? Because some of USB chargers has 1A or 2.1A. ( Hasrulnizam Hashim, 03/05/2017 )
Hi, this device is tested with standard USB port. If you connect to adapter 5V 1A or 5V 2.1A, it should be no problem because it only draw the amount of current (few mA) its needed. If you have any other inquiry you can post a topic in our technical forum as this session is only for short inquiry. Thanks. :)

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แท็ก: uc00c, usb, uart, converter, computer, interface