Overview: The DataSheet of CH341 (the first) 1 USB bus convert chip CH341
English DataSheet Version:2D http://wch.cn http://wch-ic. 1. Introduction
CH341 is a USB bus convert chip, providing UART, printer port, parallel and synchronous serial with 2-wire or 4-wire through USB bus. In UART mode, CH341 provides alternant rate control signals such as serial transfer enable, serial receive in ready etc. It also supplies mon MODEM munication signal in order to expand UART for puter or upgrade mon synchronous interface device to USB bus directly. In printer port mode, CH341 supplies standard USB printer port which pounds USB relevant protocol and Windows operate system used to upgrade ordinary parallel printer to USB bus directly. In parallel mode, CH341 gives out 8-bit parallel in EPP or MEM mode. It can be used to input/output data directly without MCU/DSP. Besides, CH341A also supports some mon synchronous serial such as 2-wire (SCL, SDA) and 4-wire (CS, SCK/CLK, MISO/SDI/DIN and MOSI/SDO/DOUT) interface. UART/RS232/RS485/RS422 D+ DCH341 Convert chip Parallel printer to USB printer puter and other USB host EPP parallel and MEM parallel mon 2-wire and 4-wire synchronous serial 2.
