Arduino Duemilanove 2009 ATmega328 Bare PCB kits

Qty	Value	Device	Parts	Description
1		10-XX	S1	touch switch6*6*5mm, red push button
1		DIODE-SMB	D1	RECTIFIER DIODE GPP 600V 1.5A SMB S2J-13
4		LED0805ROUND	L, PWR, RX, TX	patch,LED0805 red 2pcs,green 2pcs
2		PINHD-1X6	J2, POWER	2.54MM single row neilsbed 1*6 row neilsbed  2.54 space between
2		PINHD-1X8	J1, J3	2.54MMsingle row neilsbed 1*8  row neilsbed 2.54 space between
1		PN61729	X4	USB-B socket
6	1k	R-EU_	R4, R5, R6, R7, R8, R9	0805 patch resistance 1K
3	10k	R-EU_	R1, R10, R11	0805 patch resistance 10K
1	16MHz	CRYTALHC49S	Q2	16M quartz crystal oscillator
2	22p	C-EU	C2, C3	0805 patch capacitance 22P
9	100n	C-EU	C1, C4, C5, C8, C9, C10, C11, C12, C13	0805patch capacitance 104M 0.1UF 10%
2	47uF	CPOL-EUD	C6, C7	47uF,25V,patch capacitance
1	500mA	L-EUL1812	F1	1812 PTTC 0.5A
1	ATMEGA168 -20PU	ATMEGA168 -20PU	IC1	AVR SCM, ATMEGA328-20PU DIP28 ATMEL
1	IC SOKET 28P	IC SOKET 28P	FOR IC1	ICsocket DIP-28
1	DC21MMX	DC21MMX	X2	5.5*2.1MM DC socket
1	FT232RL	FT232RL	IC2	FT232RL SSOP-28
1	ICSP	PINHD-2X3	ICSP	2.54MM,2ROW*3Pin, ICSP header
1	LM358D	LM358D	IC5	LM358D
1	MC33269D-5.0	MC33269D-5.0	IC4	MC33269D-5.0
1	NDT2955	PMOS SOT223	T1	NDT2955 PMOS SOT223
1	PCB			PCB FR-4 BOARD 53.34mm×68.58mm ×1.6mm

 

                                  Arduino Duemilanove 2009 ATmega328

 

Overview

The Arduino Duemilanove ("2009") is a microcontroller board based on the ATmega168 (datasheet) or ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
 

"Duemilanove" means 2009 in Italian and is named after the year of its release. The Duemilanove is the latest in a series of USB Arduino boards; for a comparison with previous versions, see the index of Arduino boards.
 

Schematic & Reference Design

EAGLE files: arduino-duemilanove-reference-design.zip

Schematic: arduino-duemilanove-schematic.pdf
 

Summary

Microcontroller	ATmega328
Operating Voltage	5V
Input Voltage (recommended)	7-12V
Input Voltage (limits)	6-20V
Digital I/O Pins	14 (of which 6 provide PWM output)
Analog Input Pins	6
DC Current per I/O Pin	40 mA
DC Current for 3.3V Pin	50 mA
Flash Memory	16 KB (ATmega168) or 32 KB (ATmega328) of which 2 KB used by bootloader
SRAM	1 KB (ATmega168) or 2 KB (ATmega328)
EEPROM	512 bytes (ATmega168) or 1 KB (ATmega328)
Clock Speed	16 MHz

Power

The Arduino Duemilanove can be powered via the USB connection or with an external power supply. The power source is selected automatically.
 

External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The adapter can be connected by plugging a 2.1mm center-positive plug into the board's power jack. Leads from a battery can be inserted in the Gnd and Vin pin headers of the POWER connector.
 

The board can operate on an external supply of 6 to 20 volts. If supplied with less than 7V, however, the 5V pin may supply less than five volts and the board may be unstable. If using more than 12V, the voltage regulator may overheat and damage the board. The recommended range is 7 to 12 volts.
 

The power pins are as follows:
 

     VIN. The input voltage to the Arduino board when it's using an external power source (as opposed to 5 volts from the USB connection or other regulated power source). You can supply voltage through this pin, or, if supplying voltage via the power jack, access it through this pin.

    5V. The regulated power supply used to power the microcontroller and other components on the board. This can come either from VIN via an on-board regulator, or be supplied by USB or another regulated 5V supply.

    3V3. A 3.3 volt supply generated by the on-board FTDI chip. Maximum current draw is 50 mA.

    GND. Ground pins.

  Memory

The ATmega168 has 16 KB of flash memory for storing code (of which 2 KB is used for the bootloader); the ATmega328 has 32 KB, (also with 2 KB used for the bootloader). The ATmega168 has 1 KB of SRAM and 512 bytes of EEPROM (which can be read and written with the EEPROM library); the ATmega328 has 2 KB of SRAM and 1 KB of EEPROM.
 

Input and Output

Each of the 14 digital pins on the Duemilanove can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. They operate at 5 volts. Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms. In addition, some pins have specialized functions:

     Serial: 0 (RX)