Arduino UNO R3 Compatible Board

The Arduino Uno SMD is a version of the Arduino Uno, but uses a 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. 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 Microcontroller: ATmega328 SMD Operating Voltage: 5V Input Voltage (recommended) 7-12V DC Current per I/O Pin 40 mA DC Current for 3.3V Pin 50 mA Flash Memory 32 KB (ATmega328) of which 0.5 KB used by boot loader SRAM 2 KB (ATmega328) EEPROM 1 KB (ATmega328)