CH340B

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CH340B

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Thông số kỹ thuật

Manufacturer WCH(Jiangsu Qin Heng)
Package SOP-16
Voltage - Supply 3.3V
Applications Function Transceiver
Protocol USB 2.0
Data Rate 2Mbps

Tổng quan

Description

The CH340B is a USB to serial (UART) interface converter designed by WCH (Nanjing Wu Cheng Electronics). It enables communication between a computer's USB port and devices that use serial protocols, commonly found in microcontrollers and embedded systems. The CH340B is a cost-effective solution, widely used in development boards like Arduino clones and various electronics projects.
Key features include support for standard baud rates, a built-in voltage regulator, and compatibility with various operating systems, including Windows, macOS, and Linux. The chip offers a simple interface for converting USB signals to TTL serial signals, making it ideal for programming and debugging microcontrollers.
Due to its affordability and ease of integration, the CH340B has become a popular choice among hobbyists and professionals for USB connectivity in various applications.

Features

The CH340B is a USB to serial converter chip widely used for interfacing devices with USB ports. Key features include:
1. USB 2.0 Compatibility: Supports full-speed USB 2.0 communication.
2. UART Interface: Provides standard UART communication with configurable baud rates (up to 2 Mbps).
3. Driver Support: Compatible with Windows, macOS, and Linux, offering easy driver installation.
4. Low Power Consumption: Designed for efficient power usage, making it suitable for portable devices.
5. Multiple Ports: Can be configured for multiple serial ports, enhancing versatility.
6. Easy Integration: Simple pin configuration for easy integration into circuits.
7. EEPROM Support: Can interface with external EEPROM for configuration storage.
8. Cost-Effective: Generally low-cost, making it popular for hobbyist and commercial applications.
Overall, the CH340B is a reliable and cost-effective solution for serial communication in various electronic projects.

Package

The CH340B is typically available in a 16-pin SOP (Small Outline Package) or DIP (Dual In-line Package) type. The SOP package is designed for surface mounting, while the DIP version is suitable for through-hole mounting in various electronic applications.

Pinout

The CH340B is a USB to serial converter integrated circuit (IC) commonly used for interfacing USB devices with UART (Universal Asynchronous Receiver-Transmitter) systems. It typically comes in a 16-pin package.
Pin Count and Functions:
1. VCC (Pin 1): Power supply (typically 3.3V or 5V).
2. GND (Pin 2): Ground.
3. TXD (Pin 3): Transmit data output.
4. RXD (Pin 4): Receive data input.
5. DTR (Pin 5): Data Terminal Ready output.
6. RTS (Pin 6): Request to Send output.
7. CTS (Pin 7): Clear to Send input.
8. DSR (Pin 8): Data Set Ready input.
9. DCD (Pin 9): Data Carrier Detect input.
10. RI (Pin 10): Ring Indicator input.
11. CLK (Pin 11): Clock output.
12. NC (Pins 12-16): No connection or reserved.
The CH340B is widely used in applications like Arduino boards and other microcontroller projects for easy USB communication.

Manufacturer

The CH340B is manufactured by WCH (Nanjing WCH Microsystems Co., Ltd.), a Chinese company that specializes in designing and producing integrated circuits (ICs) and semiconductor solutions. Founded in 2005, WCH focuses on USB interface chips, microcontrollers, and various other electronic components. The CH340 series is particularly popular for USB-to-serial communication, widely used in various electronic devices, development boards, and peripherals. WCH is recognized for providing cost-effective solutions for connectivity applications in both consumer and industrial markets.

Application

The CH340B is primarily used as a USB to serial converter in applications such as Arduino projects, IoT devices, and embedded systems. It facilitates communication between microcontrollers and computers, enabling data transfer in robotics, home automation, and industrial automation. Additionally, it is utilized in programming and debugging various electronic devices and modules, enhancing connectivity in consumer electronics and development boards.

Equivalent

Equivalent products to the CH340B chip include the FT232R and FT231X from FTDI, the CP2102 and CP2105 from Silicon Labs, and the PL2303 series from Prolific. These chips serve similar purposes for USB to UART/serial communication, though specific features and performance may vary.

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