A000005 Arduino NANO BOARD

The Arduino Nano is a small, breadboard-friendly board based on the ATmega328 (Arduino Nano 3.x). It has the same functionality as the Arduino Duemilanove but in a smaller package.

• It lacks a DC power jack and uses a Mini-B USB cable for communication and power.

## Tech Specs:

• Microcontroller: ATmega328
• Architecture: AVR
• Operating Voltage: 5V
• Flash Memory: 32KB (2KB used by bootloader)
• SRAM: 2KB
• EEPROM: 1KB
• Clock Speed: 16 MHz
• Analog Input Pins: 8
• Digital I/O Pins: 22 (6 of which are PWM)
• PWM Output Pins: 6
• DC Current per I/O Pin: 20 mA
• Input Voltage (recommended): 7-12V
• Power Consumption: 19 mA
• PCB Size: 18 x 45 mm
• Weight: 7g
• Product Code: A000005

## Power:

• The Arduino Nano can be powered through:
• Mini-B USB connection
• 6-20V unregulated external power supply (pin 30)
• 5V regulated external power supply (pin 27)
• The power source is automatically selected based on the highest voltage available.

## Memory:

• Flash Memory: 32KB (with 2KB reserved for the bootloader)
• SRAM: 2KB
• EEPROM: 1KB

## Input and Output:

• The Nano has 14 digital I/O pins:
• Each pin can act as input/output using pinMode(), digitalWrite(), and digitalRead()
• Pins operate at 5V, each providing/receiving up to 40 mA
• Internal pull-up resistors: 20-50kΩ (disconnected by default)
• Specialized pin functions:
• Serial: Pins 0 (RX) and 1 (TX) for TTL serial data
• External Interrupts: Pins 2 and 3
• PWM Output: Pins 3, 5, 6, 9, 10, and 11 (8-bit PWM output using analogWrite())
• SPI: Pins 10 (SS), 11 (MOSI), 12 (MISO), and 13 (SCK)
• LED: Pin 13 has a built-in LED

## Analog Inputs:

• The Nano has 8 analog inputs with 10-bit resolution (1024 different values)
• Default range: Ground to 5V (can be adjusted using analogReference())

## Additional specialized pins:

• I2C: A4 (SDA) and A5 (SCL) for I2C communication
• AREF: Reference voltage for analog inputs
• Reset: A pin for resetting the microcontroller