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Serial communication on pin D0 (RX) and pin D1 (TX). used to receive (RX) and transmit (TX) TTL serial data. These pins are connected to the corresponding pins of the FTDI USB-to-TTL serial chip. By sliding the switch (S1), RX/TX pins can be re-routed to Bluetooth UART connector. Linduino One ATmega328 Linear Technology Corporation [70]
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.
The ability to convert data from serial to parallel, and from parallel to serial, using shift registers. An on-chip bit rate (baud rate) generator to control transmit and receive data rate. Handshake lines for control of an external modem, controllable by software. An interrupt function to the host microprocessor.
debugWIRE is supported by all modern hardware debuggers from Microchip.This includes Atmel-ICE, [3] JTAGICE3, AVR Dragon, JTAGICE mkII, and SNAP. [4] It is also possible to build a cheap debugWIRE hardware debugger [5] based on an open-source Arduino sketch, [6] using a general USB-Serial adaptor or ATtiny85 board, [7] or a CH552 microcontroller.
Hardware compatible for SSI standard (synchronous serial interface) Cyclic reading of sensor data up to 64 bit per slave; Transmission of status data, parameter, measured temperature value, configuration description, etc. Isochronal, real time capable data transmission; Bidirectional communication with two unidirectional lines
Sending data from sub to main may use the opposite clock edge as main to sub. Devices often require extra clock idle time before the first clock or after the last one, or between a command and its response. Some devices have two clocks, one to read data, and another to transmit it into the device. Many of the read clocks run from the chip ...
A Universal Serial Bus, or a USB is an industry standard communication protocol used to communicate data across connectors, and cables from computers to peripheral devices and/or other computers. [4] WebUSB is a set of API calls that enable access to these hardware devices from web pages.
The number of data bits in each character can be 5 (for Baudot code), 6 (rarely used), 7 (for true ASCII), 8 (for most kinds of data, as this size matches the size of a byte), or 9 (rarely used). 8 data bits are almost universally used in newer applications. 5 or 7 bits generally only make sense with older equipment such as teleprinters.