ATmega2560 through the USB interface with the PC for transmission, power supply voltage of 5V, the internal oscillator is 16MHz. The chip has a total of 54 I/O pins, especially for applications that require a large number of I/O interface circuit, which can provide 16 pulse-width modulation (PWM) analog output, there is another 16 analog inputs. In communications, there are four hardware serial ports, in addition to also support SPI communication and I2C/TWI devices. Core circuit design added reset button, communicate through the USB port.

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核心电路.SchDoc

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