QinHeng Products

QinHeng offers four main product categories: USB-to-Serial Converters including CH340 and CH341 for UART, SPI, I2C interfaces; USB Microcontrollers featuring CH32 series RISC-V MCUs with integrated USB; Wireless Connectivity including CH582 and CH579 BLE SoCs; and Interface Bridges for multi-protocol conversion. All products come with comprehensive driver support and development tools.

Browse our product categories to explore QinHeng's complete portfolio, or contact our FAE team for product recommendations based on your interface requirements.

Selecting the right USB converter depends on your interface requirements. For basic UART conversion, CH340 is the most popular and cost-effective choice. For multi-protocol needs (UART/SPI/I2C/Parallel), CH341 offers flexibility. For high-speed or GPIO requirements, CH347 provides advanced features. Consider operating system compatibility, driver availability, and package options. Our FAE team can help evaluate your specific requirements.

CH340 for UART, CH341 for multi-protocol, CH347 for advanced features. Contact our FAE team for selection guidance.

CH340 is a dedicated USB-to-UART converter with simple functionality and lowest cost. CH341 is a multi-function chip supporting USB-to-UART, SPI, I2C, and parallel interface. CH340 is ideal for simple serial communication while CH341 offers flexibility for applications requiring multiple interface types. Both chips use the same drivers and have similar USB performance characteristics.

Use CH340 for simple UART applications. Use CH341 when you need SPI, I2C, or parallel interface support.

Yes, QinHeng provides comprehensive driver support for all major operating systems. Windows drivers are WHQL certified. Linux drivers are built into kernel 2.6 and above (CH340/341 use usbserial driver). macOS drivers support 10.6 and above. Android support is available for devices with USB host mode. All drivers support both virtual COM port mode and direct API access.

Drivers are available for all major OS platforms. Linux users typically don't need to install separate drivers. Contact our FAE team for driver integration support.

QinHeng CH32 RISC-V microcontrollers are supported by open-source toolchains including GCC, OpenOCD, and PlatformIO. Official support includes WCH-Link debugger, SDK with HAL libraries, and application examples. Third-party IDEs like VS Code with PlatformIO extension provide comprehensive development environment. All tools are free and open-source.

Use PlatformIO with VS Code for easiest setup. Use WCH-Link for debugging. Contact our FAE team for toolchain configuration assistance.