![]() I2C networks are simple to set up since they only require two wires and new devices can be simply attached to the two I2C bus lines. It is appropriate for onboard communication because it has a limited communication length. I2C can deliver up to 400Kbps and uses a 10 bit or 7-bit addressing method to target a specific device on the i2c bus, allowing up to 1024 devices to be connected. A pull-up resistor must be used to connect both lines to a positive source. SDA (Serial Data Line) and SCL (Serial Control Line) are two lines used in inter-integrated circuit (I2C) communication between different ICs or modules (Serial Clock Line). The SPI is perfect for high-speed data connection because it can deliver up to 10Mbps. SPI registers are used to configure data communication. The SPI can theoretically have an infinite number of slaves. To send and receive data from the slave or master, requires six wires. Data communication is made up of the four basic SPI signals (MISO, MOSI, SCK, and SS), as well as Vcc and Ground.
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