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CH340G

Name: CH340G
Rating: 4.7 (12 reviews)

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資料表 CH340G DataSheet
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規格

Manufacturer	WCH(Jiangsu Qin Heng)
Package	SOP-16
Operating Temperature	-40℃~+85℃
Voltage - Supply	3.3V
Applications Function	USB to UART
Protocol	USB 2.0
Data Rate	2Mbps

概述

Description

The CH340G is a USB to serial converter integrated circuit (IC) widely used to bridge USB interfaces with asynchronous serial communication. It is particularly popular in embedded systems and microcontroller projects due to its low cost and ease of use. The CH340G supports various baud rates, making it suitable for a range of applications, including Arduino boards and other development platforms.
This chip facilitates communication between a computer and devices like sensors, displays, or microcontrollers via UART (Universal Asynchronous Receiver-Transmitter). It operates with a simple driver that is compatible with various operating systems, including Windows, macOS, and Linux, allowing for seamless integration into projects.
The CH340G is favored for its compact size, minimal external components required, and effective role in converting USB signals to TTL (Transistor-Transistor Logic) levels, making it ideal for hobbyists and professionals alike.

Features

The CH340G is a USB to UART (Universal Asynchronous Receiver-Transmitter) bridge commonly used in electronic projects and devices. Key features include:
1. USB 2.0 Compatibility: Supports full-speed USB 2.0, enabling data transfer rates up to 2 Mbps.
2. Multiple UART Modes: Configurable for various baud rates, supporting up to 115200 bps and beyond.
3. Integrated Circuitry: Combines USB interface and UART communication in a single chip, minimizing component count.
4. Drivers: Compatible with Windows, macOS, and Linux, requiring minimal driver installation.
5. Low Power Consumption: Operates with low power, making it suitable for battery-powered devices.
6. Versatility: Used in microcontroller projects, 3D printers, and various IoT applications.
7. Pin Compatibility: Often available in DIP and SMD packages, facilitating easy integration into different designs.
8. Cost-Effective: An affordable solution for USB-UART communication, widely available.
These features make the CH340G a popular choice for hobbyists and developers.

Package

The CH340G chip is typically available in a DIP-16 (Dual In-line Package) or SOP-16 (Small Outline Package) format. These packages facilitate easy integration into electronic projects and circuits.

Pinout

The CH340G is a USB to serial (UART) bridge chip commonly used for interfacing microcontrollers with USB. It has a total of 16 pins. Here are the key pins and their functions:
1. VCC (Pin 1): Power supply for the chip (typically 3.3V to 5V).
2. GND (Pin 2): Ground connection.
3. TXD (Pin 3): Transmit data output.
4. RXD (Pin 4): Receive data input.
5. DTR (Pin 5): Data Terminal Ready output, used for resetting the microcontroller.
6. RTS (Pin 6): Request to Send output, for flow control.
7. CTS (Pin 7): Clear to Send input, for flow control.
8. DCD (Pin 8): Data Carrier Detect output.
9. DSR (Pin 9): Data Set Ready output.
10. RI (Pin 10): Ring Indicator output.
11. VUSB (Pin 11): USB voltage input.
12. GND (Pin 12): Ground (another ground connection).
13. NC (Pins 13-16): Not connected or used for future functions.
These pins facilitate communication between a USB interface and serial devices, making the CH340G a popular choice in various applications.

Manufacturer

The CH340G is manufactured by WCH (Nanjing QinHeng Electronics), a Chinese electronics company. WCH specializes in developing integrated circuits (ICs) primarily for USB communication, as well as other interface solutions. The CH340G is commonly used as a USB to Serial converter in various electronic projects and devices, making it popular among hobbyists and in the maker community. WCH's products are widely utilized in consumer electronics and embedded systems due to their affordability and functionality.

Application

The CH340G is a USB to UART (serial) converter widely used in various applications, including:
1. Microcontroller programming and communication (e.g., Arduino).
2. Serial communication for industrial devices.
3. Debugging and development of embedded systems.
4. Connecting sensors and peripherals to computers.
5. IoT devices for data transmission.
6. Replacement for other USB to serial chips in cost-sensitive projects.
Its ease of use and low cost make it popular in hobbyist and professional electronics.

Equivalent

Equivalent products to the CH340G chip include:
1. FTDI FT232R
2. Silabs CP2102
3. Prolific PL2303
4. Microchip MCP2200
These chips serve similar functions as USB to serial converters and are commonly used in various electronic applications.