Arduino Nano v3 Atmel ATmega328

Arduino Nano v3 Atmel ATmega328
Arduino Nano v3 Atmel ATmega328 Arduino Nano v3 Atmel ATmega328
Product Code: Nano
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If desired, the pins can be soldered to the board.

Fee Arduino Nano - a small, full-featured, well compatible with a breadboard board based on the microcontroller ATmega328 (Arduino Nano version 3.0). It has more or less the same functionality such as the Arduino Duemilanove, but just a different design. It lacks the power connector DC, and cable connector - Mini-B USB instead of the standard. Nano has been developed and now Gravitech (USA). 

Design and construction

You can upload files boards Arduino Nano 3.0 (ATmega328): scheme , Eagle files .


Pinout Arduino Nano:

Number O Name Type Description
1 - 2, 5 - 16 D0 - D13 Input - output Digital input / output ports D0 - D13
3, 28 RESET Input Reset (active - low)
4, 29 GND Food General Power
17 3V3 Output +3.3 V with chip FT232
18 AREF Input ADC reference voltage
19 - 26 A0 - A7 Input Analog input channels 0 - 7
27 +5 V Input - output +5 V output from the controller on the motherboard, or
+5 V input from an external source
30 VIN Food Supply voltage


Microcontroller Atmel ATmega328P
Supply voltage 5B
Input Voltage (recommended) 7-12V
Input Voltage (Max) 6-20B
Digital input / output 14 lines (of which 6 = PWM)
Analog Input 8 lines
Direct current lines IO 40mA
Constant current line 3.3V 50mA
Flash-memory 32 KB, 2 KB of them are used for the boot
SRAM-memory 2 kb
EEPROM-memory 1 kb
Clock speed 16MHz
Measurements 0.73 "x 1.70" (18,54 mm by 43,18 mm)


Arduino Nano can be supplied from connector Mini-B USB, 6-20V unregulated external source (30th pin), or an external source of controlled 5B (27th pin). Power source is automatically selected to the highest voltage.

FTDI FT232RL chip on the motherboard Nano is powered only when the board is powered from USB. As a result, when the card receives power from an external source (not-USB), output 3.3V (which is available chip FTDI) is absent, and RX and TX LEDs will flash if digital lines to 0 or 1 is sootetstvenno unit.


ATmega328 has 32 ​​KB (2 KB of which is also occupied by the loader). ATmega328 has 2 KB SRAM and 1 KB EEPROM (which can be read or written using the EEPROM library ).

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