CH340C

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CH340C

+Nomenclature

  • FabricantWch (qinheng, Jiangsu)

  • Pièce fabricant #CH340C

  • Fiche technique CH340C DataSheet

  • En stock12509

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Spécifications

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

Présentation

Description

The CH340C is a USB-to-serial converter chip produced by WCH (Nanjing QinHeng Electronics). It facilitates communication between a computer's USB interface and serial devices, such as microcontrollers or other serial peripherals. The CH340C is part of the CH340 series and is designed to replace traditional RS-232 serial ports with USB connections, making it ideal for modern computing platforms.
Key features of the CH340C include compatibility with USB 2.0, support for various baud rates, and minimal external components. It typically requires only a crystal oscillator and a few capacitors for operation. The chip comes in a compact SOP-16 package, making it suitable for space-constrained applications.
Drivers for the CH340C are available for multiple operating systems, including Windows, macOS, and Linux, ensuring broad usability. Widely used in hobbyist projects like Arduino clones, the CH340C is valued for its cost-effectiveness and reliable performance in facilitating USB-to-serial communication.

Equivalent

The CH340C chip is a USB-to-serial converter. Several equivalent products include the FT232R and FT231X from FTDI, CP2102 and CP2104 from Silicon Labs, PL2303 from Prolific, and the ATmega16U2 used in some Arduino boards. These chips provide similar functionality, enabling serial communication over USB for microcontrollers and other devices. However, it's important to check specific features like driver support, operating voltage, and pin compatibility when selecting an equivalent.

Features

The CH340C is a USB-to-serial interface chip that features a compact design and cost-effective solution for serial communication applications. It supports various communication interfaces, including UART, I2C, and SPI, making it versatile for different projects. The device operates within a wide voltage range from 3.3V to 5V, providing flexibility for integration with different systems. It offers full-speed USB 2.0 compliance, ensuring reliable and fast data transfer rates up to 12 Mbps.
One key feature is its built-in crystal oscillator, which eliminates the need for an external clock source, simplifying the circuit design. The CH340C also includes a self-recovery function to protect against overcurrent conditions, enhancing its reliability and durability. Additionally, it supports common operating systems like Windows, Linux, and macOS, with readily available drivers. Its compact package size and low power consumption make it suitable for use in portable and space-constrained applications. Overall, the CH340C is a practical choice for developers needing efficient USB-to-serial conversion capabilities.

Pinout

The CH340C is a USB to UART (Universal Asynchronous Receiver-Transmitter) interface chip commonly used for serial communication. It typically has 10 pins with the following functions:
1. VCC: Power supply pin.
2. GND: Ground pin.
3. TXD: Transmit Data Output. Used to send data to the connected device.
4. RXD: Receive Data Input. Used to receive data from the connected device.
5. D- (DM): USB D- data line for differential USB data transfer.
6. D+ (DP): USB D+ data line for differential USB data transfer.
7. CTS: Clear to Send. Used for hardware flow control (optional).
8. RTS: Request to Send. Used for hardware flow control (optional).
9. R232: Internally connected for converting USB signals to UART.
10. NC (or No Connection): Not connected, may be reserved for future use or testing purposes.
The CH340C integrates a crystal oscillator and does not require an external crystal, which simplifies the circuit design. It is commonly used in applications where USB connectivity is needed for microcontrollers or other serial interface devices.

Manufacturer

The CH340C is manufactured by WCH (Nanjing Qinheng Microelectronics Co., Ltd.). WCH is a Chinese company that specializes in designing and producing integrated circuits, including microcontrollers, USB-serial chips, and other interface converters. They are well-known in the electronics community for providing cost-effective and reliable solutions for connecting microcontrollers and other devices to computers via USB. The CH340 series, including the CH340C, is particularly popular among hobbyists and engineers for its ease of use and wide compatibility with various operating systems.

Application

The CH340C is a USB-to-serial converter chip used in various applications requiring USB connectivity. Common application areas include:
1. Embedded Systems: Facilitates communication between microcontrollers and computers for programming and data exchange.
2. Prototyping and Development: Used in development boards and prototyping tools for debugging and interfacing.
3. Consumer Electronics: Enables USB connectivity in devices like printers, scanners, and modems.
4. Industrial Automation: Used in communication modules for industrial equipment and control systems.
5. Data Acquisition: Allows PCs to capture and process data from sensors and other peripheral devices.
6. Telecommunications: Integrated into modems and network equipment for serial communication.
Overall, its versatility makes it suitable for any project requiring USB to serial conversion.

Package

The CH340C typically comes in a SOP-16 (Small Outline Package) form factor. This package type is compact and suitable for surface mounting on PCBs, making it ideal for USB to serial communication applications.