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ATmega2560-Arduino Pin Mapping

A diagram showing the correspondence between the pins on an Arduino board and those of the ATmega2560 microcontroller.

Below is the pin mapping for the Atmega2560. The chip used in Arduino 2560. There are pin mappings to Atmega8 and Atmega 168/328 as well.

Arduino Mega 2560 PIN diagram.
Arduino Mega 2560 PIN diagram.

Arduino Mega 2560 PIN mapping table

Pin NumberPin NameMapped Pin Name
1PG5 ( OC0B )Digital pin 4 (PWM)
2PE0 ( RXD0/PCINT8 )Digital pin 0 (RX0)
3PE1 ( TXD0 )Digital pin 1 (TX0)
4PE2 ( XCK0/AIN0 )
5PE3 ( OC3A/AIN1 )Digital pin 5 (PWM)
6PE4 ( OC3B/INT4 )Digital pin 2 (PWM)
7PE5 ( OC3C/INT5 )Digital pin 3 (PWM)
8PE6 ( T3/INT6 )
9PE7 ( CLKO/ICP3/INT7 )
10VCCVCC
11GNDGND
12PH0 ( RXD2 )Digital pin 17 (RX2)
13PH1 ( TXD2 )Digital pin 16 (TX2)
14PH2 ( XCK2 )
15PH3 ( OC4A )Digital pin 6 (PWM)
16PH4 ( OC4B )Digital pin 7 (PWM)
17PH5 ( OC4C )Digital pin 8 (PWM)
18PH6 ( OC2B )Digital pin 9 (PWM)
19PB0 ( SS/PCINT0 )Digital pin 53 (SS)
20PB1 ( SCK/PCINT1 )Digital pin 52 (SCK)
21PB2 ( MOSI/PCINT2 )Digital pin 51 (MOSI)
22PB3 ( MISO/PCINT3 )Digital pin 50 (MISO)
23PB4 ( OC2A/PCINT4 )Digital pin 10 (PWM)
24PB5 ( OC1A/PCINT5 )Digital pin 11 (PWM)
25PB6 ( OC1B/PCINT6 )Digital pin 12 (PWM)
26PB7 ( OC0A/OC1C/PCINT7 )Digital pin 13 (PWM)
27PH7 ( T4 )
28PG3 ( TOSC2 )
29PG4 ( TOSC1 )
30RESETRESET
31VCCVCC
32GNDGND
33XTAL2XTAL2
34XTAL1XTAL1
35PL0 ( ICP4 )Digital pin 49
36PL1 ( ICP5 )Digital pin 48
37PL2 ( T5 )Digital pin 47
38PL3 ( OC5A )Digital pin 46 (PWM)
39PL4 ( OC5B )Digital pin 45 (PWM)
40PL5 ( OC5C )Digital pin 44 (PWM)
41PL6Digital pin 43
42PL7Digital pin 42
43PD0 ( SCL/INT0 )Digital pin 21 (SCL)
44PD1 ( SDA/INT1 )Digital pin 20 (SDA)
45PD2 ( RXDI/INT2 )Digital pin 19 (RX1)
46PD3 ( TXD1/INT3 )Digital pin 18 (TX1)
47PD4 ( ICP1 )
48PD5 ( XCK1 )
49PD6 ( T1 )
50PD7 ( T0 )Digital pin 38
51PG0 ( WR )Digital pin 41
52PG1 ( RD )Digital pin 40
53PC0 ( A8 )Digital pin 37
54PC1 ( A9 )Digital pin 36
55PC2 ( A10 )Digital pin 35
56PC3 ( A11 )Digital pin 34
57PC4 ( A12 )Digital pin 33
58PC5 ( A13 )Digital pin 32
59PC6 ( A14 )Digital pin 31
60PC7 ( A15 )Digital pin 30
61VCCVCC
62GNDGND
63PJ0 ( RXD3/PCINT9 )Digital pin 15 (RX3)
64PJ1 ( TXD3/PCINT10 )Digital pin 14 (TX3)
65PJ2 ( XCK3/PCINT11 )
66PJ3 ( PCINT12 )
67PJ4 ( PCINT13 )
68PJ5 ( PCINT14 )
69PJ6 ( PCINT 15 )
70PG2 ( ALE )Digital pin 39
71PA7 ( AD7 )Digital pin 29
72PA6 ( AD6 )Digital pin 28
73PA5 ( AD5 )Digital pin 27
74PA4 ( AD4 )Digital pin 26
75PA3 ( AD3 )Digital pin 25
76PA2 ( AD2 )Digital pin 24
77PA1 ( AD1 )Digital pin 23
78PA0 ( AD0 )Digital pin 22
79PJ7
80VCCVCC
81GNDGND
82PK7 ( ADC15/PCINT23 )Analog pin 15
83PK6 ( ADC14/PCINT22 )Analog pin 14
84PK5 ( ADC13/PCINT21 )Analog pin 13
85PK4 ( ADC12/PCINT20 )Analog pin 12
86PK3 ( ADC11/PCINT19 )Analog pin 11
87PK2 ( ADC10/PCINT18 )Analog pin 10
88PK1 ( ADC9/PCINT17 )Analog pin 9
89PK0 ( ADC8/PCINT16 )Analog pin 8
90PF7 ( ADC7/TDI )Analog pin 7
91PF6 ( ADC6/TDO )Analog pin 6
92PF5 ( ADC5/TMS )Analog pin 5
93PF4 ( ADC4/TCK )Analog pin 4
94PF3 ( ADC3 )Analog pin 3
95PF2 ( ADC2 )Analog pin 2
96PF1 ( ADC1 )Analog pin 1
97PF0 ( ADC0 )Analog pin 0
98AREFAnalog Reference
99GNDGND
100AVCCVCC

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