{"product_id":"uart-ttl-rs232-rs485-serial-port-to-usb-keyboard-protocol-ch9328-hid-io","title":"UART \/ TTL \/ RS232 \/ RS485 serial port to USB keyboard protocol CH9328 HID IO","description":"\u003cp\u003e\u003cspan style=\"color: rgb(255, 0, 0); font-size: 24px;\"\u003e\u003cb\u003eUART \/ TTL \/ RS232 \/ RS485 serial port to USB keyboard protocol CH9328 HID IO\u003c\/b\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eSER2UKB is a pure hardware solution of the CH9328 series serial port to USB keyboard protocol, which supports plug and play, converts serial port data to USB keyboard values, simulates keyboard input, and displays it at the cursor.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eThis is a one-way transmission. The direction from serial port to USB cannot be transferred from USB to serial port.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e● Support 12Mbps full-speed USB transmission, compatible with USB V2.0, only crystals and capacitors are needed for peripheral components.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e● The default serial communication baud rate is 9600bps, which supports multiple serial communication formats and various common baud rate settings.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e● Support 5V power supply voltage and 3.3V power supply voltage.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e● You can configure the VID, PID, and various string descriptors of the chip.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e● You can configure the default baud rate of the chip.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e● Comply with USB related specifications and HID related device specifications.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e● Multiple working modes, with different requirements, can simulate full keyboard function.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eThe default baud rate is 9600bps, which supports common communication baud rates: 50, 75, 100, 110, 134.5, 150, 300, 600, 900, 1200, 1800, 2400, 3600, 4800, 9600, 14400, 19200, 28800, 33600, 38400, 56000, 57600, 76800, 115200. The baud rate error of the signal sent by the serial port is less than 0.3%, and the allowed baud rate error of the signal received by the serial port is not less than 2%.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e2x4 double-row gold-plated pins, the upper row is serial port and RS485 output, and the lower row is IO port, with silk screen marking next to each pin.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eUpper pin definition\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eVCC 5V voltage output (TTL level default is 3.3V output)\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eTX- serial port transmitting end, RS485 level B \/ D- end\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eRX + serial port receiving end, RS485 level A \/ D + end\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eGND ground\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eLower pin definition\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eIO4 No. 4 IO pin\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eIO3 No. 3 IO pin\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eIO2 No. 2 IO pin\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003eIO1 No. 1 IO pin\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-wrap: nowrap;\"\u003ePackaging: TTL \/ RS232 \/ RS485 serial port to USB keyboard module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"lilly electronics","offers":[{"title":"RS485","offer_id":40333937868929,"sku":"USEN-SER2UKB-RS485","price":39.0,"currency_code":"CAD","in_stock":true},{"title":"RS232","offer_id":40333937901697,"sku":"USEN-SER2UKB-RS232","price":39.0,"currency_code":"CAD","in_stock":true},{"title":"TTL","offer_id":40333937934465,"sku":"USEN-SER2UKB-TTL","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0578\/8647\/4369\/files\/8de44df8be41dfd03420cd968e161aaf.jpg?v=1752483440","url":"https:\/\/www.lilly-electronics.com\/fr\/products\/uart-ttl-rs232-rs485-serial-port-to-usb-keyboard-protocol-ch9328-hid-io","provider":"Lilly Electronics","version":"1.0","type":"link"}