CH340N SMD IC USB to serial chip UART WCH SOP8 CH340N

Product Overview:

A surface-mount USB-to-serial interface integrated circuit designed to emulate standard asynchronous serial ports, allowing for the seamless upgrading of peripheral devices to USB or the addition of extra serial ports to computer systems.

Core Specifications:

Manufacturer: WCH (Nanjing Qinheng Microelectronics)

Package Type: Available in various packages, including SOP-16 and SSOP-20

Function: USB-to-UART Bridge

Input Channels: N/A (USB Data In / UART Data Out)

Control Interface: Full-speed USB 2.0 device interface; UART (TXD/RXD) with hardware flow control signals

Features:

• Full-speed USB 2.0 interface, compatible with USB V2.0 specifications

• Supports hardware full-duplex serial interface with built-in transceiver buffers

• Baud rate support ranging from 50 bps to 2 Mbps

• Provides common MODEM signals (RTS, DTR, DCD, RI, DSR, CTS)

• Support for 5V and 3.3V power supply voltages

• Software compatible with existing serial applications on Windows (requires no modifications)

• Built-in firmware, compatible with CH341 VCP drivers

Applications:

• Legacy device migration to USB

• Microcontroller-based project USB-to-serial communication

• Serial interface expansion for embedded systems

• In-system programming (ISP) and serial debugging

• General-purpose USB-to-RS232/RS485/RS422 data conversion