But, the higher value can be altered using AREF pin as well as the function of analog Reference (). Every analog pin is accessible with the 10-bit resolution which can gauge from GND to 5 volts. It is very important to know that all the analog pins on this board can be utilized like digital I/O pins. There are 16-analog pins included on the board which is marked as A0-A15. The term AREF stands for Analog Reference Voltage which is a reference voltage for analog inputs This will give you to modify the programming skills in real time. This LED can be operated based on the high and low values of the pin. This Arduino board includes a LED and that is allied to pin-13 which is named as digital pin 13. Providing LOW value, rising or falling edge or changing the value to the interrupt pins. These pins produce interrupts by a number of ways i.e. The external interrupts can be formed by using 6-pins like interrupt 0(0), interrupt 1(3), interrupt 2(21), interrupt 3(20), interrupt 4(19), interrupt 5(18). For serial 0, it includes Tx (1) and Rx (0), for serial 1, it includes Tx(18) & Rx(19), for serial 2 it includes Tx(16) & Rx(17), and finally for serial 3, it includes Tx(14) & Rx(15). The serial pins of this board have four combinations. Tx indicates the transmission of information whereas the RX indicates receive data. The serial pins of this board like TXD and RXD are used to transmit & receive the serial data. However, the output voltage through this pin to the board will be automatically set up to 5V. The voltage provided by the power jack can be accessed through this pin. The range of supplied input voltage to the board ranges from 7volts to 20volts. When we compare with other types of Arduino boards, these boards are physically superior. These boards offer flexible work memory space is the more & processing power that permits to work with different types of sensors without delay. By using this board, the Arduino mega projected can be designed. All analog pins of this board can be used as digital I/O pins. Every pin of this board comes by a particular function which is allied with it. The pin configuration of this Arduino mega 2560 board is shown below.
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