CH9340 Description
Power supply voltage input, requires an external 0.1uF power decoupling capacitor. Ground Connect to VCC to input external power supply when 3.3V supply voltage, connect to external 0.1uF decoupling capacitor when 5V supply voltage Connect to USB D+ Signal directly Connect to USB D- Signal directly Serial data output Serial data input, built-in pull-up resistor MODEM input signal, clear to send, active low, built-in...