Microcontrollers (MCU) are complete computer systems on a chip. They combine an arithmetic logic unit (ALU), memory, timer/counters, serial port, input/output (I/O) ports and a clock oscillator. Most microcontrollers include a 4-bit, 8-bit, 16-bit, 32-bit, 64-bit, or 128-bit data bus. The number of serial channels and I/O ports varies among devices.
Serial interfaces include controller area network (CAN), inter-integrated circuit (I2C), serial peripheral interface (SPI),...
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