#Arduino mega pinout diagram serial

AREF:В Used to provide reference voltage for analog inputs with analogReference() function.Analog pin 4 (SDA) and pin 5 (SCA) alsoВ used for TWI communication using Wire library.ДЄrduino Uno has a couple of other pins as explained below:.They measure from 0 to 5 volts but this limit can be increased by using AREF pin with analog Reference() function. In-built LED Pin 13:В This pin is connected with an built-in LED, when pin 13 is HIGH вЂ“ LED is on and when pin 13 is LOW, its off.ДЄlong with 14 Digital pins, there are 6 analog input pins, each of which provide 10 bits of resolution, i.e.SPI Pins 10 (SS), 11 (MOSI), 12 (MISO) and 13 (SCK):В These pins are used for SPI communication.PWM Pins 3, 5, 6, 9 and 11:В These pins provide an 8-bit PWM output by using analogWrite() function.External Interrupt Pins 2 and 3:В These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value.

#Arduino mega pinout diagram serial

They are connected with the corresponding ATmega328P USB to TTL serial chip. Serial Pins 0 (Rx) and 1 (Tx):В Rx and Tx pins are used to receive and transmit TTL serial data.Out of these 14 pins, some pins have specific functions as listed below: Each pin operate at 5V and can provide or receive a maximum of 40mA current, and has an internal pull-up resistor of 20-50 KOhms which are disconnected by default.

The 14 digital input/output pins can be used as input or output pins by using pinMode(), digitalRead() and digitalWrite() functions in arduino programming.