CH340C, CH340E and CH340B have built-in crystal, no external crystal, CH340B also integrates EEPROM used to configure the serial number, etc.

CH340 is a USB bus conversion chip, it can realize USB to UART interface or USB to printer interface. In serial UART mode, CH340 provides common MODEM liaison signal, used to …

Hardware full-duplex serial port, built-in transceiver buffer, supports communication baud rate of 50bps~2Mbps. Supports commonly used MODEM contact signals RTS, DTR, DCD, RI, DSR, …

The CH340 chip is used by a number of Arduino compatible boards to provide USB connectivity, you may need to install a driver, don’t panic, it’s easier than falling off a log, and much less …

Free access CH340C datasheet, Package, pinout diagrams, and BOM tools.

Its main products include USB/Bluetooth/Ethernet interface chips and connected/interconnected/wireless MCUs, which focus on connectivity, networking and control.

In this tutorial, we'll show you how to install CH340 drivers on multiple operating systems if you need. The driver should automatically install on most operating systems. However, there is a …

Apr 25, 2025 · The CH340 series, developed by WCH, offers a range of USB-to-Serial converter chips. These chips are widely used in various electronic applications, including Arduino …

CH340 is a USB bus converter chip which converts USB to serial port or printer port. In UART mode, CH340 provides standard MODEM signals, used to extend serial port for computers, or …

Part #: CH340C. Description: USB Convert serial port chip. Page: 10. Manufacturer: Nanjing Qinheng Microelectronics Co., Ltd..