Arduino Uno

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The Arduino Uno SMD is a version of the Arduino Uno, but uses an surface mount version of the Atmega328P instead of the through-hole version. This version was made in response to a shortage in supply of the through-hole Atmega328P. The board is based on the 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.

Specifications :

  • Microcontroller: ATmega328P 
  • Operating Voltage: 5V 
  • Input Voltage (recommended): 7-12V 
  • Inout Voltage (limit): 6-20V 
  • Digital I/O Pins: 14 (of which 6 provide PWM output) 
  • PWM Digital I/O Pins: 6 
  • Analog Input Pins: 6 
  • DC Current per I/O Pin: 20 mA 
  • DC current for 3.3V Pin: 50 mA 
  • Flash Memory: 32 KB (ATmega328P) of which 0.5 KB used by bootloader
  • SRAM: 2 KB (ATmega328P)
  • EEPROM: 1 KB (ATmega328P)
  • Clock Speed: 16 MHz
  • Length: 68.6 mm 
  • Width: 58.4 mm 
  • Weight: 25 g 

Farees Ahmed

The aim of this blog is to serve as a quick reference guide for the Curious. Appreciate your feedback and comments !