CH330N solution verification board

USB to serial port module with CH330N as the main control

Small size, uses three-wire serial port (GND TXD RXD) to transmit data, easy driver installation, high compatibility

This module has a 3.3V output , which can drive a microcontroller that can only work at the 3.3V level (the driving performance is not high, up to 500ma)

Equipped with 500ma PTC self-restoring fuse to avoid property damage caused by short circuit

The serial-to-serial port module made with CH330N is smaller than the CH340 series of serial-to-serial port modules . Using the driver of the CH340 series can allow the computer to recognize the CH330N.

Internally integrated high-precision crystal oscillator ensures stability while also reducing production costs.

And CH330N retains the most basic three-wire serial communication interface and RTS# interface (computer request to send, low effective) . Friends who use three-wire serial ports may wish to try it!