supremeOne

CH334-USB interface expansion module

Overview

CH344 is a USB bus adapter chip that realizes the function of converting USB to four asynchronous serial ports UART0/1/2/3. It is used to expand asynchronous serial ports for computers, or directly upgrade ordinary serial device or MCU to USB bus.

This project is based on the CH334R chip. The actual picture is as follows

in use. The module is connected to the computer USB port through the Type-C port. The four USB 2.0 ports on the module are used as expansion ports to connect peripherals such as mice.
Please note that this module uses bus power supply, and its maximum total current is 1A, that is, the total current of the four expansion ports cannot exceed 1A.
It has been verified and can be used immediately after power-on.

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-05-12 22:25:30

Problem with stm32 clock system frequency?
Why is the frequency of the low-speed clock higher than that of the high-speed clock? Shouldn't a low-speed clock be considered "slow" if its frequency is low?
STM32 and graphic dot matrix 19264 LCD screen program, please give me some advice, thank you
#include#include#include"19264.h" #include"delay.h" #include "sys.h"void IO_inint() {RCC-APB2ENR|=12;//使能PORTA时钟RCC-APB2ENR|=13;//使能PORTB时钟JTAG_Set(SWD_ENABLE);GPIOB-CRL=0X33333333;GPIOB-ODR|=0XFFFF;
What I thought of when I looked at the 2013 device list
[i=s]This post was last edited by paulhyde on 2014-9-15 03:07[/i] [font=微软雅黑][color=#000000]When the list of electronic design competitions comes out, many people like to guess what the questions will
MCS-51 interrupt system
For beginners, the concept of interruption is relatively abstract. In fact, the processing system of the microcontroller has many similarities with the general thinking of people. Let's take a very ap
430BOOST-SHARP96 has a good display effect!
430BOOST-SHARP96 has a good display effect! It is different from the common LCD effect!
Why can't I download the OS of WINCE60 to the development board through the network? The network is connected, the Active target device can receive it, and the development board keeps outputting BOOTME.
Why can't I download the OS under WINCE60 to the development board through VS2005 using the network? The network is connected, the Active target device can be received, and the development board keeps

Datasheet More

Circuits More