0
1
2
3
4
5
6
7
8
9
10
11
12
13
15
16
17
18
19
20
21
14
(SCK)
(MISO)
(MOSI)
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
(TX0)
(RX0)
51
52
53
pwm
pwm
pwm
pwm
pwm
(MISO)
(SCK)
(MOSI)
(SS)
(MOSI)
(SCK)
(MISO)
22
23
24
25
26
27
28
29
30
32
34
36
31
33
35
37
49
47
45
43
41
39
50
48
46
44
42
40
38
pwm
pwm
pwm
pwm
pwm
USB boot En
+3V3
+3V3
+3V3
+5V
+5V
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
ADC8
ADC9
ADC10
ADC11
ADC12
ADC13
ADC14
ADC15
AREF
AREF
AREF
CMP
D+
D-
DTR
GATE_CMD
GND
M8RXD
M8RXD
M8TXD
M8TXD
MISO2
MISO2
MOSI2
MOSI2
PA0
PA0
PA1
PA1
PA2
PA2
PA3
PA3
PA4
PA4
PA5
PA5
PA6
PA6
PA7
PA7
PB0
PB0
PB1
PB1
PB1
PB2
PB2
PB2
PB3
PB3
PB3
PB4
PB5
PB6
PB7
PC0
PC0
PC1
PC1
PC2
PC2
PC3
PC3
PC4
PC4
PC5
PC5
PC6
PC6
PC7
PC7
PD7
PD7
PE0
PE0
PE0
PE1
PE1
PE1
PE3
PE3
PE4
PE4
PE5
PE5
PG0
PG0
PG1
PG1
PG2
PG2
PG5
PG5
PH3
PH3
PH4
PH4
PH5
PH5
PH6
PH6
PL0
PL0
PL1
PL1
PL2
PL2
PL3
PL3
PL4
PL4
PL5
PL5
PL6
PL6
PL7
PL7
PWRIN
RD+
RD+
RD-
RD-
RESET
RESET
RESET
RESET
RESET
RESET2
RESET2
RXD1
RXD2
RXD2
RXD3
RXD3
RXL
SCK2
SCK2
SCL
SCL
SDA
SDA
TXD1
TXD2
TXD2
TXD3
TXD3
TXL
UGND
UGND
USBVCC
USBVCC
USBVCC
USHIELD
VIN
VIN
VIN
VUCAP
XT1
XT1
XT1R
XT2
XT2
XTAL1
XTAL1
XTAL1R
XTAL2
XTAL2
XVCC
+3V3
1
2
3
4
5
6
7
8
ADCH
1
2
3
4
5
6
7
8
ADCL
C1
22p
C2
100n
C3
100n
C4
100n
C5
100n
C6
100n
C7
100n
C8
100n
C9
100n
C10
1u
C11
100n
C12
100n
C13
100n
C14
22p
C15
22p
C16
22p
C17
22p
1
2
3
4
5
6
7
8
COMMUNICATION
D1
M7
F1
500mA
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
1
2
GROUND
1
IN
3
OUT
4
2
IC1
MC33269ST-5.0T3
1
VI
3
VO
2
IC2
MC33269D-5.0
ADJ
(A8)PC0
53
(A9)PC1
54
(A10)PC2
55
(A11)PC3
56
(A12)PC4
57
(A13)PC5
58
(A14)PC6
59
(A15)PC7
60
(AD0)PA0
78
(AD1)PA1
77
(AD2)PA2
76
(AD3)PA3
75
(AD4)PA4
74
(AD5)PA5
73
(AD6)PA6
72
(AD7)PA7
71
(ADC0)PF0
97
(ADC1)PF1
96
(ADC2)PF2
95
(ADC3)PF3
94
(ADC4/TCK)PF4
93
(ADC5/TMS)PF5
92
(ADC6/TDO)PF6
91
(ADC7/TDI)PF7
90
(ALE)PG2
70
(CLKO/ICP3/INT7)PE7
9
(ICP1)PD4
47
(MISO/PCINT3)PB3
22
(MOSI/PCINT2)PB2
21
(OC0A/OC1C/PCINT7)PB7
26
(OC0B)PG5
1
(OC1A/PCINT5)PB5
24
(OC1B/PCINT6)PB6
25
(OC2A/PCINT4)PB4
23
(OC3A/AIN1)PE3
5
(OC3B/INT4)PE4
6
(OC3C/INT5)PE5
7
(RD)PG1
52
(RXD0/PCIN8)PE0
2
(RXD1/INT2)PD2
45
(SCK/PCINT1)PB1
20
(SCL/INT0)PD0
43
(SDA/INT1)PD1
44
(SS/PCINT0)PB0
19
(T0)PD7
50
(T1)PD6
49
(T3/INT6)PE6
8
(TOSC1)PG4
29
(TOSC2)PG3
28
(TXD0)PE1
3
(TXD1/INT3)PD3
46
(WR)PG0
51
(XCK0/AIN0)PE2
4
(XCK1)PD5
48
AGND
99
AREF
98
AVCC
100
GND
11
32
62
81
PH0(RXD2)
12
PH1(TXD2)
13
PH2(XCK2)
14
PH3(OC4A)
15
PH4(OC4B)
16
PH5(OC4C)
17
PH6(OC2B)
18
PH7(T4)
27
PJ0(RXD3/PCINT9)
63
PJ1(TXD3/PCINT10)
64
PJ2(XCK3/PCINT11)
65
PJ3(PCINT12)
66
PJ4(PCINT13)
67
PJ5(PCINT14)
68
PJ6(PCINT15)
69
PJ7
79
PK0(ADC8/PCINT16)
89
PK1(ADC9/PCINT17)
88
PK2(ADC10/PCINT18)
87
PK3(ADC11/PCINT19)
86
PK4(ADC12/PCINT20)
85
PK5(ADC13/PCINT21)
84
PK6(ADC14/PCINT22)
83
PK7(ADC15/PCINT23)
82
PL0(ICP4)
35
PL1(ICP5)
36
PL2(T5)
37
PL3(OC5A)
38
PL4(OC5B)
39
PL5(OC5C)
40
PL6
41
PL7
42
RESET
30
VCC
10
31
61
80
XTAL1
34
XTAL2
33
GND
GND
GND
VCC
VCC
VCC
IC3
ATMEGA2560-16AU
(AIN0/INT1)PD1
7
(AIN2/PCINT11)PC2
5
(CTS/HWB/AIN6/TO/INT7)PD7
13
(INT4/ICP1/CLK0)PC7
22
(INT5/AIN3)PD4
10
(OC0B/INT0)PD0
6
(OC1A/PCINT8)PC6
23
(PCINT5)PB5
19
(PCINT6)PB6
20
(PCINT7/OC0A/OC1C)PB7
21
(PCINT9/OC1B)PC5
25
(PCINT10)PC4
26
(PD0/MISO/PCINT3)PB3
17
(PDI/MOSI/PCINT2)PB2
16
(RTS/AIN5/INT6)PD6
12
(RXD1/AIN1/INT2)PD2
8
(SCLK/PCINT1)PB1
15
(SS/PCINT0)PB0
14
(T1/PCINT4)PB4
18
(TXD1/INT3)PD3
9
(XCK/AIN4/PCINT12)PD5
11
AVCC
32
D+
29
D-
30
GND
3
PAD
EXP
RESET(PC1/DW)
24
UCAP
27
UGND
28
UVCC
31
VCC
4
XTAL1
1
XTAL2(PC0)
2
ATMEGA8U2-MU
IC4
3
2
1
IC5A
LM358D
5
6
7
IC5B
LM358D
8
4
!EN
3
GND
2
IN
1
NC/FB
4
OUT
5
1
2
3
4
5
6
ICSP
ICSP
1
2
3
4
5
6
ICSP1
ICSP
1
JP1
1
JP2
1
JP3
1
JP4
L
YELLOW
BLM21
L1
ON
GREEN
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+
PC1
47u
+
PC2
47u
1
2
3
4
5
6
POWER
1
2
3
4
5
6
7
8
PWMH
1
2
3
4
5
6
7
8
PWML
1
2
Q1
16MHz
1
2
Q2
16MHz
R1
1M
R2
1M
R3
27R
R4
27R
1
2
3
4
5
RESET
TS42
1
2
RESET-EN
1
8
10K
RN1A
2
7
10K
RN1B
3
6
10K
RN1C
4
5
10K
RN1D
1
8
22R
RN2A
2
7
22R
RN2B
3
6
22R
RN2C
4
5
22R
RN2D
1
8
1k
RN3A
2
7
1k
RN3B
3
6
RN3C
1k
4
5
RN3D
1k
1
8
1k
RN4A
2
7
1k
RN4B
3
6
1k
RN4C
4
5
1k
RN4D
1
8
10K
RN5A
2
7
10K
RN5B
3
6
10K
RN5C
4
5
10K
RN5D
RX
YELLOW
T2
FDN340P
TX
YELLOW
1
2
UBOOT
1
1
2
2
3
3
1
2
3
4
P$1
P$1
P$2
P$2
X2
USB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
XIOH
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
XIOL
Y1
16MHz
Y2
16MHz
Z1
PGB1010604
Z2
PGB1010604