宋元浩

USB to RS232 module based on CH340T

Overview

Use CH340T to convert USB to TTL, and then use ADM213 to convert TTL to RS232. ADM213 can be replaced by MAX213/SP213/MAX211.
In the circuit, all nine pins of RS232 are connected to signals, which makes the wiring more complicated. In actual use, in most cases, only pins 2, 3, and 5 of RS232 are used. In this case, MAX232/ICL232/SP232 can be used instead of ADM213. In this way, due to the reduction of chip pins, the wiring complexity can be greatly reduced and the circuit scale can be reduced.

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:2025-05-13 17:39:48

Research and design of reversing radar system (report + code).
[i=s]This post was last edited by paulhyde on 2014-9-15 03:02[/i] Research and design of reversing radar system (report + code).
Bluetooth development issues on ASUS PDA
I started using the in the hand class library to develop. It worked on the knockoff phone, but it didn't work on the ASUS MyPal 632N. I couldn't find the Bluetooth device. Later, I tried using two Blu
Keyboard Issues
#include#define unt unsigned int void Delay(void); int KeyProcess(void); void Init_Port(void); void Init_CLK(void); int KeyScan(void); void delay1(unt); void main(void) { int t,i; int ch[8] = {0x01,0x
Yaoke joins hands with 99click to strengthen marketing effectiveness evaluation
Recently, Babaike signed a contract with 99click, a well-known domestic network marketing effect analysis service provider, aiming to use its professional network monitoring and Internet marketing dat
How to generate a binary file in DEBUG mode?
I have the source code of EBOOT. How can I generate a binary file in DEBUG mode?
【Design Tools】Xilinx Configuration Guide
Different methods of configuring Xilinx FPGAs and programming CPLDs and PROMs help meet the different needs of system designers. This document describes the different configuration modes to help desig

Datasheet More

Circuits More