![]() In parallel port mode, CH341 provides an 8-bit parallel interface in EPP mode or MEM mode for input and output data directly without a microcontroller/DSP/MCU. ![]() In printer port mode, CH341 provides a standard USB print port compatible with USB-related specifications and the Windows operating system for upgrading a print port printer directly to the USB. In UART mode, CH341 provides UART transmit enable, UART receive ready rate control signals, etc., and standard MODEM interface signals, used to expand serial port for computer or upgrade directly normal serial device to USB bus. CH341 is a USB bus converter chip which converts USB to serial port, printer port, parallel port, and common 2/4-line synchronize serial communication interfaces etc.
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