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FTDI TTL-232RG: USB to UART cable FTDI FT232RL: USB to UART IC (in SSOP package) Internal die of FTDI FT232RL chip. FTDI was founded on 13 March 1992 [3] by its current CEO, Fred Dart (whose initials happen to be "FTD"). The company is an indirect descendant of Computer Design Concepts Ltd, a former semiconductor technology startup also founded ...
A USB-to-serial adapter or simply USB adapter is a type of protocol converter that is used for converting USB data signals to and from serial communications standards (serial ports). Most commonly the USB data signals are converted to either RS-232 , RS-485 , RS-422 , or TTL-level UART serial data.
For users who still need RS-232 serial ports, external USB-to-UART bridges are now commonly used. They combine the hardware cables and a chip to do the USB and UART conversion. Cypress Semiconductor and FTDI are two of the significant commercial suppliers of these chips. [6]
A converter from USB to an RS-232 compatible serial port—more than a physical transition, it requires a driver in the host system software and a built-in processor to emulate the functions of the IBM XT compatible serial port hardware.
The board used the chip CH340G as converter UART-USB. When working in the frequency 12 MHz, giving a stable result of data exchange (need install drivers to computer). Mega PRO (Embed) 2560 CH340G / ATmega2560 - connects to the computer via microUSB cable (used for almost all Android smartphones). MiniZed: Zynq 7Z007S Avnet, Inc.
USB communications device class (or USB CDC) is a composite Universal Serial Bus device class. The communications device class is used for computer networking devices akin to a network card , providing an interface for transmitting Ethernet or ATM frames onto some physical media.
The USART's synchronous capabilities were primarily intended to support synchronous protocols like IBM's synchronous transmit-receive (STR), binary synchronous communications (BSC), synchronous data link control (SDLC), and the ISO-standard high-level data link control (HDLC) synchronous link-layer protocols, which were used with synchronous voice-frequency modems.
Serial UART Speed up to 921.6 kbit/s-27.1 (L) 14.8 (W) 2.4 (H) mm Class 1 Bluetooth transmission level for longer communication distance typically ranges from 100 m up to 1 km. Supports UART, USB, I2C, PCM, PIO interfaces for the communication with the OEMs. [13] Source : Sena Technologies Inc. [8]