1
2
3
4
5
6
7
8
A
A
TP_CMP
TP_LCMD
GND
2
C8
1u
1
UCAP
UVCC
DD+
UGND
GND
PAD
2
2
TP_ONL
10
R2
1M
9
XTAL1
CSTCE16M0V53-R0 16MHZ
21
AREF
+5V
L2 10uH
AVCC 20
22
C10
100n
7
8
ZU4
RESET
XTAL2
XTAL1
AREF
AVCC
AGND
VCC
GND
C6
(SCK)PB5
(MISO)PB4
(MOSI)PB3
(SS)PB2
(OC1)PB1
(ICP)PB0
(ADC5)PC5
(ADC4)PC4
(ADC3)PC3
(ADC2)PC2
(ADC1)PC1
(ADC0)PC0)
(AIN1)PD7
(AIN0)PD6
(T1)PD5
(T0)PD4
(INT1)PD3
(INT0)PD2
(TXD)PD1
(RXD)PD0
100n
GND
RN2B
2
19
18
17
16
15
14
SS
IO9
IO8
28
27
26
25
24
23
AD5/SCL
AD4/SDA
AD3
AD2
AD1
AD0
13
12
11
6
5
4
3
2
IO7
IO6
IO5
IO4
IO3
IO2
IO1
IO0
ATMEGA328P-PU
1K
M8RXD
1K
7 RN4B
2
M8TXD
1K
8 RN4A
1
AREF
GND
SCK
MISO
MOSI
SS
8
7
6
5
4
3
2
1
13
12
11
10
9
8
IOH
6x1F-H8.5
6
5
4
3
2
1
AD
8x1F-H8.5
8
7
6
5
4
3
2
1
7
6
5
4
3
2
1
0
IOL
ORIGIN
TP_RX
GND
1
2
3
4
5
TP_TX
6
TP_SCL
GND
10x1F-H8.5
AD5/SCL 10
SCL
AD4/SDA 9
SDA
TP_AREF
100n
3x2 M
TX
TP_RXL
YELLOW
7
C4
TP_9TP_11TP_13
1
+5V
2
4
6
TP_SDA
1
3
5
7
TP_A1TP_A3TP_A5
XTAL2
1K
6 RN2C
3
RX
YELLOW
6
TP_8TP_10TP_12
4
5
100n
C5
RN1D 10K
D2
RESET
TP_TXL
ATMEGA16U2-MU(R)
3
RN4C 1K
GND
ICSP
5
2
1
JP2
GND
GND
GND_TP GND_TP1
E
TP_PB4 TP_PB5
4
2
3
1
13
12
11 TXLED
10 RXLED
9 M8RXD
8 M8TXD
7
6
RN4D 1K
TP_A0TP_A2TP_A4
(CTS/HWB/AIN6/TO/INT7)PD7
(RTS/AIN5/INT6)PD6
(XCK/AIN4/PCINT12)PD5
(INT5/AIN3)PD4
(TXD1/INT3)PD3
(RXD1/AIN1/INT2)PD2
(AIN0/INT1)PD1
(OC0B/INT0)PD0
GREEN
ON
8x1F-H8.5
4
3
27
31
30
29
28
33
GROUND
2x2 M - NM
TP_PB6 TP_PB7
VCC
GND
5
2
7
RN3B 22R
3
6
RN3C 22R
8
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TP_UGND
4
3
(INT4/ICP1/CLK0)PC7
(OC1A/PCINT8)PC6
(PCINT9/OC1B)PC5
(PCINT10)PC4
(AIN2/PCINT11)PC2
TP_XT2
+5V
Y1
1
C11
C9
22p 22p
16MHz
TP_VUCAP
AVCC
22
23
25
26
5
4
TP_1 TP_3 TP_5 TP_7
BLM21
32
TP_VUCAP
USBVCC
RDRD+
UGND
100n
C7
1
XT1
+5V
TP_USBVCC
USHIELD
L1
R1
1M
2
GND
GND
+5V
RD+
XT1
+3V3
GND
TP_DTR
22R
5 RN3D
4
GND
RD-
XT2
21 PB7
20 PB6
19 PB5
18 PB4
17 MISO2
16 MOSI2
15 SCK2
14
TP_XT1
CG0603MLC-05E
Z2
Z1
TP_USH
DD+
CG0603MLC-05E
XUSB
UGND
D
1
2
3
4
P$2
P$1
P$2
P$1
USB
X2
TP_XT4 TP_XT3
USBVCC
MF-MSMF050-2 500mA
22R
8 RN3A
1
U3
24
RESET2
F1
USB-B_TH
1
2
3
4
5
6
7
8
RESET
RESET-EN
+5V
1
2
(PCINT7/OC0A/OC1C)PB7
(PCINT6)PB6
RESET(PC1/DW)
(PCINT5)PB5
(T1/PCINT4)PB4
(PD0/MISO/PCINT3)PB3
XTAL2(PC0)
(PDI/MOSI/PCINT2)PB2
(SCLK/PCINT1)PB1
XTAL1
(SS/PCINT0)PB0
GND
POWER
VIN
DTR
TP_XUSB
2
TP_D+
C3
1u
4
1K
5 RN2D
4
GND
TP_D-
D3
3x2 M
CD1206-S01575
MOSI2
+5V
TP_RESET
GND
USB boot En
2
4
6
GND
+5V
GND
TP_MOSI2 TP_SCK2
10K
6 RN1C
3
1
3
5
MISO2
SCK2
RESET2
GND NC/FB
PC2 C2
47u 100n
GND
5 +3V3
ON/OFF
2
ICSP1
C
OUT
TP_5VTP_5V1
+5V
TP_0 TP_2 TP_4 TP_6
T1
FDN340P
+5V
IN
3
Arduino(TM) UNO Rev3
TP_MISO2 TP_RESET2
GND
1
+5V
GND
+5V
4
2
Arduino SA may make changes to specifications and product descriptions at any time, without notice. The Customer must not
rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Arduino SA reserves
these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
The product information on the Web Site or Materials is subject to change without notice. Do not finalize a design with this info
TP_3V3
+5V
PWRIN
IN OUT
GND
B
USBVCC
D1
M7
PC1
47u
U1
NCP1117ST50T3G
+
LMV358IDGKR
3
VIN
TP_LL
7
6
1
8
U5B
5
CD1206-S01575
TS42031-160R-TR-7260
RESET
GND
SCK
3
3
1
LMV358IDGKR
1K
+3V3
2
TP_VIN
1
1
L
RN2A
YELLOW
GND
U5A
3
GATE_CMD
4
C1
100n
TP_PWRIN
X1
POWERSUPPLY_DC21MMX
L13
+
10K
7 RN1B
2
8
CMP
Reference Designs ARE PROVIDED "AS IS" AND "WITH ALL FAULTS. Arduino SA DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
REGARDING PRODUCTS, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
TP_GATE
1
8
1
+5V
RN1A 10K
VIN
B
C
D
E