Arduino MEGA

	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P
1	-pin-	Chip PinNo	Alias	I/O	PWM	Special Features	ADC	I2C/TWI	SPI	Attach Interrupt	Serial.print	Serial.read	Port	PCINT	PCMSK	Chip PinNo

2	0	2	RXD0	yes	?	Serial0 RX						yes	E0			2
3	1	3	TXD1	yes	?	Serial0 TX					yes		E1			3
4	2	6		yes	oc3b	AttachInterrupt 0				0			E4			6
5	3	7		yes	oc3c	AttachInterrupt 1				1			E5			7
6	4	1		yes	oc0b								G5			1
7	5	5		yes	oc3a								E3			5
8	6	15		yes	oc4a								H3			15
9	7	16		yes	oc4b								H4			16
10	8	18			oc4c								H6			18
11	9	17			oc2b								H5			17
12	10	23			oc2a								B4			23
13	11	24			oc1a								B5			24
14	12	25			oc1b								B6			25
15	13	26			oc0a								B7			26
16	14	64	TXD3			Serial 3 TX					yes		J1			64
17	15	63	RXD3			Serial 3 RX						yes	J0			63
18	16	13	TXD2			Serial 2 TX					yes		H1			13
19	17	12	RXD2			Serial 2 RX						yes	H0			12
20	18	46	TXD1			Serial 1 TX AttachInterrupt 5				5	yes		d3			46
21	19	45	RXD1			Serial 1 RX AttachInterrupt 4				4		yes	d2			45
22	20	44	SDA			I2C SDA AttachInterrupt 3		SDA		3			d1			44
23	21	43	SCL			I2C SCL AttachInterrupt 2		SCL		2			d0			43
24	22	78											a0			78
25	23	77											a1			77
26	24	76											a2			76
27	25	75											a3			75
28	26	74											a4			74
29	27	73											a5			73
30	28	72											a6			72
31	29	71											a7			71
32	30	60											c7			60
33	31	59											c6			59
34	32	58											c5			58
35	33	57											c4			57
36	34	56											c3			56
37	35	55											c2			55
38	36	54											c1			54
39	37	53											c0			53
40	38	50											D7			50
41	39	70											G2			70
42	40	52											G1			52
43	41	51											G0			51
44	42	42											L7			42
45	43	41											L6			41
46	44	40			yes								L5			40
47	45	39			yes								L4			39
48	46	38			yes								L3			38
49	47	37											L2			37
50	48	36											L1			36
51	49	35											L0			35
52	50	22	MISO			SPI MISO			MISO				B3			22
53	51	21	MOSI			SPI MOSI			MOSI				B2			21
54	52	20	SCK			SPI SCK			SCK				B1			20
55	53	19											B0			19
56	a00	97	A0				10bit						F0			97
57	a01	96	A1				10bit						F1			96
58	a02	95	A2				10bit						F2			95
59	a03	94	A3				10bit						F3			94
60	a04	93	A4				10bit						F4			93
61	a05	92	A5				10bit						F5			92
62	a06	91	A6				10bit						F6			91
63	a07	90	A7				10bit						F7			90
64	a08	89	A8				10bit						K0			89
65	a09	88	A9				10bit						K1			88
66	a10	87	A10				10bit						K2			87
67	a11	86	A11				10bit						K3			86
68	a12	85	A12				10bit						K4			85
69	a13	84	A13				10bit						K5			84
70	a14	83	A14				10bit						K6			83
71	a15	82	A15				10bit						K7			82
72	x	47											d4			47
73	x	48											d5			48
74	x	49											d6			49
75	x	4											E2			4
76	x	8											E6			8
77	x	9											E7			9
78	x	28											G3			28
79	x	29											G4			29
80	x	14											H2			14
81	x	27											H7			27
82	x	65											J2			65
83	x	66											J3			66
84	x	67											J4			67
85	x	68											J5			68
86	x	69											J6			69
87	x	79											J7			79
88		10	VCC										-			10
89		11	GND										-			11
90		30	RESET			RESET							-			30
91		31	VCC										-			31
92		32	GND										-			32
93		33	XTAL2										-			33
94		34	XTAL1										-			34
95		61	VCC										-			61
96		62	GND										-			62
97		80	VCC										-			80
98		81	GND										-			81
99		98	AREF										-			98
100		99	AGND										-			99