CH340 CH340G USB to TTL Converter Module USB Downloader Module UART Adapter 3.3V 5V Replace PL2303 CP2102
Description
A simple USB to serial converter with selectable voltage through a jumper. Specifications:
3.3V-5V TTL voltages
Converts TTL logic levels to computer RS232 levels
Power supplies: 5V, 3.3V, GND (min)
RX (3.3V-5V)
TX (3.3V-5V)
With the supplied jumper you can configure the module for 5V or 3.3V. Without the jumper, the module is automatically powered with 3.3V. For 5V you have to put the jumper between the Vcc and 5V.
If you want to change the voltage, first disconnect it from a computer so that there is no voltage on the module.
Specification
New original CH340G chips, the chips are STC official recommended USB to TTL chips will not appear due to different drive / different computer as a result of incompatibilities! ! !
High-quality high-grade yellow pin, pin durable than the black market, beautiful;
Not only has the power light PWR, there TXD and RXD LEDs, whether the product is easy to learn and intuitive to work in the absence of the instrument in the case.
3V and 5V by a short circuit to take choice.