Arduino

Arduino UNO Reference Design
TM
Reference Designs ARE PROVIDED "AS IS" AND "WITH ALL FAULTS". Arduino DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, REGARDING PRODUCTS, INCLUDING BUT NOTLIMITED TO, ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Arduino may make changes to specifications and product descriptions at any time, without notice. The Customermust not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Arduino reserves these for future definition and shall have no responsibility whatsoeverfor 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 thisinformation. VIN
RN1B 10K
3 5 6

IC1
IN OUT

+5V

4 2

7

2

+3V3
10K RN1A 8 1

2

8

1

CMP

3

U1A
1

U1B
7

MC33269ST-5.0T3 +5V +5V PC2 C2 47u 100n

LM358D GNDGATE_CMD +5V +5V

LM358D
3
1 2

C1 100n
4

3

VIN D1 M7 PC1 47u
3
+

IC2 GND MC33269D-5.0
VI ADJ
1

VO

2
+

1

2

PWRIN

GND

GND

USBVCC

GND
1 IN EN GND NC/FB 4OUT 5 +3V3

GND

GND

GND

GND

T1 FDN304V

3 2

C3 1u

+5V POWER
RESET
1 2 3 4 5 6

GND GND +5V ICSP1
1 3 5 2 4 6

+3V3

GND

+5V
4 5 6

VIN GND
RESET TS42

YELLOWL

RN4D 1K GND
1K RN2B
2

3

RN4C 1K

RN2A

10K RN1C 6 3

ICSP GND F1 X2
1 2 3 4

100n

500mA XUSB DD+
PGB1010604 Z2

DTR

USBVCC
GND

XT2 R1 RD- 1M RD+ Y1 XT1 16MHz +5VRESET Y2 XTAL2 R2 1M XTAL1 AREF +5V
1

4

RESET2

24 2

22R RN3A 8 1 22R RN3D 5 4
PGB1010604

USB

P$2 P$1

XT1R
R3 27R
32 4 3

1

(PCINT7/OC0A/OC1C)PB7 (PCINT6)PB6 (PCINT5)PB5RESET(PC1/DW) (T1/PCINT4)PB4 (PD0/MISO/PCINT3)PB3 (PDI/MOSI/PCINT2)PB2 XTAL2(PC0) (SCLK/PCINT1)PB1 (SS/PCINT0)PB0 XTAL1 AVCC VCC GND UCAP UVCC DD+ UGND PAD (INT4/ICP1/CLK0)PC7 (OC1A/PCINT8)PC6...