CH340N

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Especificações

Atributo Valor
Manufacturer WCH(Jiangsu Qin Heng)
Package / Case SOP-8
Voltage - Supply 2.4V~5.5V
Type High-side switch
Operating Temperature - -40℃~+125℃
Number of Channels 1
Control Input Logic Active High
Rds(on) 80mΩ

Visão Geral

Description

The CH340N is a USB-to-serial chip commonly used for interfacing microcontrollers or other devices with a computer via USB. It is a cost-effective solution for adding USB connectivity to projects, especially in embedded systems. The chip can convert USB signals to UART (Universal Asynchronous Receiver-Transmitter) serial communication, making it suitable for applications requiring serial data transfer.
Key features of the CH340N include compatibility with various baud rates, support for multiple operating systems (such as Windows, Linux, and macOS), and minimal external components required for operation. It typically requires a few passive components for setup, such as resistors and capacitors, making it easy to integrate into circuit designs.
The CH340N is widely used in Arduino-compatible boards and other development platforms due to its affordability and reliability. It often serves as an alternative to other USB-to-serial chips like the FT232, offering similar functionality at a lower cost. Users should ensure they have the appropriate drivers installed on their computers to use the CH340N effectively.

Equivalent

The CH340N chip, a USB-to-serial converter, has several equivalent products, such as the FTDI FT232RL, Silicon Labs CP2102, Prolific PL2303, and the MCP2200 from Microchip. These chips perform similar functions of enabling USB-to-serial communication and are used in various embedded systems and device interfaces. However, there might be differences in drivers, performance, and cost, which should be considered for specific applications.

Features

The CH340N is a USB-to-serial conversion chip that offers several notable features. It provides a reliable interface for converting USB signals to UART or RS232 serial communication, making it suitable for various applications, including microcontroller programming and serial debugging. It supports full-speed USB 2.0, ensuring efficient data transfer.
The CH340N is designed for simplicity and ease of use with minimal external components required, reducing the overall cost and complexity of the design. It supports multiple baud rates, making it flexible for different serial communication needs. The chip is compatible with various operating systems, including Windows, Linux, and macOS, which enhances its versatility.
Additional features include built-in USB protocol handling, bus-powered operation, and low power consumption, which is crucial for portable devices. It also offers options for hardware flow control, such as RTS and CTS signals, ensuring reliable communication.
Overall, the CH340N is a cost-effective and efficient solution for implementing USB-to-serial functionality in a wide range of electronic projects.

Pinout

The CH340N is a USB-to-serial chip commonly used for converting USB signals to UART serial communication. It is a simplified version of the CH340 series, designed to provide basic USB-to-UART functionality with fewer pins, making it suitable for applications where space is a constraint.
The CH340N typically comes in an 8-pin SOP package. The pin functions are as follows:
1. VCC: Power supply pin (3.3V or 5V).
2. GND: Ground connection.
3. TXD: Transmit Data, outputs the serial data sent to the USB.
4. RXD: Receive Data, inputs the serial data to be sent via USB.
5. D+: USB data line, positive.
6. D-: USB data line, negative.
7. RESET: Reset pin, used to reset the chip.
8. NC/Other: Some versions may include a No Connect or other function pin.
The CH340N is valued for its simplicity and low cost, making it a popular choice for projects that require basic USB-to-serial conversion.

Manufacturer

The CH340N is manufactured by Jiangsu Qinheng Co., Ltd., commonly known as WCH (Nanjing QinHeng Corp.). WCH is a Chinese company that specializes in the design and development of integrated circuits and electronic components, particularly in the area of USB bridge chips, serial communication chips, and network controllers. They are known for providing cost-effective and reliable solutions for connecting devices via USB to various serial communication protocols. The CH340 series, including the CH340N, is widely used in electronics and microcontroller projects for interfacing microcontrollers with USB systems.

Application

The CH340N is a USB-to-serial converter chip used in various applications requiring serial communication. Key application areas include:
1. Embedded Systems: Facilitates communication between microcontrollers and computers for programming and data exchange.
2. IoT Devices: Connects IoT devices to PCs for data transfer and control.
3. Arduino Projects: Often used in Arduino boards for USB connectivity.
4. Industrial Automation: Interfaces industrial equipment with computers for monitoring and control.
5. Consumer Electronics: Enables USB connectivity in gadgets and consumer devices.
6. Data Logging: Connects sensors and data loggers to computers for data retrieval.
7. Development Boards: Used in development kits for easy USB communication.
These applications benefit from its cost-effectiveness and reliability.

Package

The CH340N is typically available in a SOP-16 (Small Outline Package) type. This package is suitable for surface mounting on printed circuit boards, providing a compact solution for USB to serial communication.

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