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Ch340 usb to serial schematic1/30/2023 One of the most common applications of this chip is in various Arduino and Arduino-compatible boards, since the ATMega329P used does not have built-in USB support, it talks to a computer using a UART interface that is converted to USB using the CH340. The CH340 is an easy-to-use USB to serial IC that converts USB signals to UART, which is used to communicate with microcontrollers and older appliances. How To Use CH340 USB To Serial Converter IC Note: Complete technical details can be found in the CH340 datasheet linked at the end of this page. Emulates standard serial interface, can be used to upgrade older equipment to USB.This article will focus on the CH340T variant of the IC, which is used for UART to USB conversion. This IC is found in some versions of the Arduino Nano to perform Serial to USB conversion to communicate with the board through a USB connector. The CH340 is a popular IC that is a bidirectional USB to Serial converter IC, used to convert USB signals into UART, which can be used to communicate with microcontrollers.
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