C2683634_CH341 USB bus conversion chip solution verification board

    CH341 is a USB bus adapter chip that provides asynchronous serial ports, print ports, parallel ports, and commonly used 2-wire and 4-wire synchronous serial interfaces through the USB bus.

    Programmers made with CH341 are often used to directly read and write 25 series SPI interface FLASH memories and 24 series IIC interface EEPROM memories, and are particularly well-known for use in bios flashing.

    The design uses the USB male connector as the input, and uses two jumper caps to select whether the chip supply voltage is 3.3V or 5V. Lead out SPI, IIC, UART, EPP/MEM and other interfaces through pin headers.

install driver

Double-click to open the driver installer

Click Install. If the installation fails, click Uninstall and reinstall.

After the driver is successfully installed, we use a jumper cap to connect the mode selection to the ISP/I2C position.

The power selection jumper cap allows you to choose 3.3V or 5V. Plug the board into the USB interface and connect it to the computer.

At this time, the blue light on the board lights up, as shown in the picture above.

Check it in the task manager and you can see that the external device is connected, as shown above.