The CH340G USB to Serial Converter is a versatile communication module designed to establish seamless TTL serial communication between a computer USB port and microcontrollers.
The CH340G USB to Serial Converter is a versatile communication module designed to establish seamless TTL serial communication between a computer USB port and microcontrollers. Built around the widely adopted WCH CH340G USB-to-UART bridge IC, this module provides a reliable virtual COM port interface on host operating systems.
Featuring an onboard 3.3V and 5V power selection jumper, it can directly power and communicate with both 3.3V and 5V logic target boards such as Arduino, ESP8266, ESP32, STM32, PIC, and AVR. The board includes onboard status LEDs (TXD, RXD, PWR) for real-time visual monitoring of data transfer and power status, along with standard 2.54mm pitch header pins for easy jumper wire connections.
This module is widely used for flashing firmware on wireless microcontrollers, debugging serial data via terminal software, programming bare chip microcontrollers, and repairing router/modem serial consoles.
| Core Controller IC | WCH CH340G USB to UART Bridge IC |
|---|---|
| USB Interface | USB Type-A Male Connector |
| Output Interface | 6-Pin Header Pinout (V_CC, GND, TXD, RXD, RTS, CTS or DTR) |
| Dual Voltage Output | Jumper-selectable 3.3V and 5V DC output |
| Signal Logic Voltage | 3.3V and 5V TTL logic level compatible |
| Status Indicators | Onboard LEDs for Power (PWR), Transmit (TXD), and Receive (RXD) |
| Baud Rates Supported | Standard baud rates from 300 bps up to 2 Mbps |
| Over-current Protection | Integrated self-resetting fuse for USB port protection |
What is the operating voltage?
Jumper-selectable 3.3V and 5V DC output.
Which interface does it use?
USB Type-A Male Connector.
Is it compatible with Arduino and ESP32?
Yes. It works with Arduino, ESP32, ESP8266, STM32 projects.
Can I buy the CH340G USB to Serial Converter in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
