Converter USB - UART CH340

Converter USB - UART CH340 is used to connect the microcontroller to a personal computer. The module is connected to the computer using the USB interface, and to the microcontroller device via the UART interface with TTL level signals.

Often the module is used to connect Arduino boards or other microprocessor devices to a computer.

The converter is designed based on the integrated circuit CH340. The chip provides two-way communication and high speed transfer via USB interface, it also emulates a serial output with a speed from 75 bits to 2 Mbits. The main feature of the microcircuit, which distinguishes it from analogues, is its low price.

There are 6 pins on the module board. The VCC and GND pins are used as board power, the TxD pin is the transmit line, and the RxD pin is the receive line of the UART signal. If the microcontroller is already connected to its power supply, then the module is connected to it through 3 outputs: GND, TD and RD. The signal level will change on the TxD and RxD lines, which is set by a jumper between the VCC outputs (3.3V, 5V).

Please note that the receiver of the RxD module must be connected to the transmitter of the TX controller, similarly, the TxD output of the converter to the RX of the microcontroller.

There are 3 LED indicators on the module, where: one LED informs about the voltage supply to the board, the other two indicators signal the activity of the RxD and TxD outputs.

If, when connecting the USB-UART CH340 converter to the PC, the drivers were not installed automatically, then you need to download them fromlinkand then install them manually.

The converter supports all versions of the Windows operating system. In addition, on the manufacturer's website you can download drivers for Linux, MAC OS and ANDROID with application examples.