USB to Serial Port Chip CH9101 CH9101N is a high-speed USB-to-UART bridge IC developed by WCH (Qinheng Electronics). It converts a USB 2.0 Full-Speed interface into a standard asynchronous UART serial interface, enabling seamless communication between a computer and microcontrollers, embedded systems, industrial equipment, and other UART-based devices. The device features an integrated clock oscillator and power-on reset circuitry, minimizing external components and simplifying PCB design. Housed in a compact SOP-8 package, the CH9101N supports UART logic voltages from 1.8 V to 5 V, making it suitable for a wide range of low-power and mixed-voltage applications. It is commonly used for USB debugging, firmware downloading, serial communication, and IoT development. Key Features USB 2.0 Full-Speed compliant device interface USB-to-UART bridge with baud rates up to 3 Mbps Supports 1.8 V, 2.5 V, 3.3 V, and 5 V UART I/O levels Integrated clock oscillator (no external crystal required) Built-in power-on reset circuitry Full-duplex UART communication Supports hardware flow control (RTS/CTS) Compatible with standard virtual COM port (VCP) drivers Compact SOP-8 package with minimal external components Suitable for MCU programming, debugging, and serial communication applications #CH9101N #WCH #USBtoUART #USBBridge #UART #USB20 #SerialCommunication #EmbeddedSystems #Microcontroller #IoT #IndustrialAutomation #Debugging #FirmwareDownload #SOP8 #InterfaceIC

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adrian95

4 days ago