Arduino Pin Mapping

Arduino Connector

ATmega2560

(Mega 2560)

(ATmega32u4)

(Leonardo)

ATmega168/328

(Uno and Nano)

Board Pin

Chip Port and Channel

Chip Port and Channel

Chip Port and Channel

Analog pin 0

PF0 (ADC0)
Digital pin 54

 

PF7 (ADC7/TDI)
Digital pin 18

 

PC0 (ADC0/PCINT8)
Digital pin 14

Analog pin 1

PF1 (ADC1)
Digital pin 55

 

PF6 (ADC6/TDO)
Digital pin 19

 

PC1 (ADC1/PCINT9)
Digital pin 15

 

Analog pin 2

PF2 (ADC2)
Digital pin 56

 

PF5 (ADC5/TMS)
Digital pin 20 

 

PC2 (ADC2/PCINT10)
Digital pin 16

 

Analog pin 3

PF3 (ADC3)
Digital pin 57

 

PF4 (ADC4/TCK)
Digital pin 21 

 

PC3 (ADC3/PCINT11)
Digital pin 17

 

Analog pin 4

PF4 (ADC4 /TMK)
Digital pin 58

 

PF1 (ADC1)
Digital pin 22 

 

PC4 (ADC4/SDA/PCINT12)
Digital pin 18

 

Analog pin 5

PF5 (ADC5 /TMS)
Digital pin 59

PF0 (ADC0)
Digital pin 23 

PC5 (ADC5/SCL/PCINT13)
Digital pin 19

Analog pin 6

PF6 (ADC6)
Digital pin 60

 

 

Analog pin 7

PF7 (ADC7)
Digital pin 61

 

 

Analog pin 8

PK0 (ADC8 /PCINT16)
Digital pin 62

 

 

Analog pin 9

PK1 (ADC9 /PCINT17)
Digital pin 63

 

 

Analog pin 10

PK2 (ADC10 /PCINT18)
Digital pin 64

 

 

Analog pin 11

PK3 (ADC11 /PCINT19)
Digital pin 65

 

 

Analog pin 12

PK4 (ADC12 /PCINT20)
Digital pin 66

 

 

Analog pin 13

PK5 (ADC13 /PCINT21)
Digital pin 67

 

 

Analog pin 14

PK6 (ADC14 /PCINT22)
Digital pin 68

 

 

Analog pin 15

PK7 (ADC15 /PCINT23)
Digital pin 69

 

 

Digital pin 0

PE0 (RXD0/PCINT8) (RX0)

PD2 (RX D1/AIN1/INT2) (RX)

PD0 (PCINT16/RXD) (RX0)

Digital pin 1

PE1 (TXD0) (TX0)

PD3 (TXD1/INT3) (TX)

PD1 (PCINT17/TXD) (TX0)

Digital pin 2

PE4 (OC3B/INT4) (PWM)

PD1 (SDA/INT1) 

PD2 (PCINT18/INT0)

Digital pin 3

PE5 (OC3C/INT5) (PWM)

PD0 (OC0B/SCL/INT0) (PWM)

PD3 (PCINT19/OC2B/INT1) (PWM)

Digital pin 4

PG5 (OC0B) (PWM)

PD4 (ICP1/ADC8) 

PD4 (PCINT20/XCK/T0)

Digital pin 5

PE3 (OC3A/AIN1) (PWM)

PC6 (OC3A/#0C4A) (PWM)

PD5 (PCINT21/OX0B/T1) (PWM)

Digital pin 6

PH3 (OC4A) (PWM)

PD7 (T0/OC4D/ADC10) (PWM)

PD6 (PCINT22/OC0A/AIN0) (PWM)

Digital pin 7

PH4 (OC4B) (PWM)

PE6 (INT.6/AIN0)

PD 7 (PCINT23/AIN1)

Digital pin 8

PH5 (OC4C) (PWM)

PB4 (ADC11/PCINT4) 

PB0 (PCINT0/CLKO/ICP1)

Digital pin 9

PH6 (OC2B) (PWM)

PB5 (PCINT5/OC1A/#OC4B/ADC12) (PWM)

PB1 (OC1A/PCINT1) (PWM)

Digital pin 10

PB4 (OC2A/PCINT4) (PWM)

PB6 (PCINT6/OC1B/OC4B/ADC13) (PWM)

PB2 (SS/OC1B/PCINT2) (PWM)

Digital pin 11

PB5 (OC1A/PCINT5) (PWM)

PB7 (PCINT7/OC0A/OC1C/#RTS) (PWM)

PB3 (MOSI/OC2A/PCINT3) (PWM)

Digital pin 12

PB6 (OC1B/PCINT6) (PWM)

PD6 (T1/#OC4D/ADC9) 

PB4 (MISO/PCINT4)

Digital pin 13

PB7 (OC0A/OC1C/PCINT7) (PWM)

PC7 (ICP3/CLK0/)0C4A) (PWM)

PB5 (SCK/PCINT5)

Digital pin 14

PJ1 (TXD3/PCINT10) (TX3)

 

 

Digital pin 15

PJ0 (RXD3/PCINT9) (RX3)

 

 

Digital pin 16

PH1 (TXD2) (TX2)

 

 

Digital pin 17

PH0 (RXD2) (RX2)

 

 

Digital pin 18

PD3 (TXD1/INT3) (TX1)

 

 

Digital pin 19

PD2 (RXDI/INT2) (RX1)

 

 

Digital pin 20

PD1 (SDA/INT1) (SDA)

 

 

Digital pin 21

PD0 (SCL/INT0) (SCL)

 

 

Digital pin 22

PA0 (AD0)

 

 

Digital pin 23

PA1 (AD1)

 

 

Digital pin 24

PA2 (AD2)

 

 

Digital pin 25

PA3 (AD3)

 

 

Digital pin 26

PA4 (AD4)

 

 

Digital pin 27

PA5 (AD5)

 

 

Digital pin 28

PA6 (AD6)

 

 

Digital pin 29

PA7 (AD7)

 

 

Digital pin 30

PC7 (A15)

 

 

Digital pin 31

PC6 (A14)

 

 

Digital pin 32

PC5 (A13)

 

 

Digital pin 33

PC4 (A12)

 

 

Digital pin 34

PC3 (A11)

 

 

Digital pin 35

PC2 (A10)

 

 

Digital pin 36

PC1 (A9)

 

 

Digital pin 37

PC0 (A8)

 

 

Digital pin 38

PD7 (T0)

 

 

Digital pin 39

PG2 (ALE)

 

 

Digital pin 40

PG1 (RD)

 

 

Digital pin 41

PG0 (WR)

 

 

Digital pin 42

PL7

 

 

Digital pin 43

PL6

 

 

Digital pin 44

PL5 (OC5C) (PWM)

 

 

Digital pin 45

PL4 (OC5B) (PWM)

 

 

Digital pin 46

PL3 (OC5A) (PWM)

 

 

Digital pin 47

PL2 (T5)

 

 

Digital pin 48

PL1 (ICP5)

 

 

Digital pin 49

PL0 (ICP4)

 

 

Digital pin 50

PB3 (MISO/PCINT3) (MISO)

 

 

Digital pin 51

PB2 (MOSI/PCINT2) (MOSI)

 

 

Digital pin 52

PB1 (SCK/PCINT1) (SCK)

 

 

Digital pin 53

PB0 (SS/PCINT0) (SS)