SKU : UNOR3-D51S4

The Arduino Uno is a microcontroller board 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 ceramic resonator, 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.

MCU: ATmega328
-USB interface: ATmega16U2
-Operating voltage: 5V
-Digital I/O pins: 14 (including 6 with PWM capability)
-Analog input pins: 6
I-I/O pin output current:  40mA max
-3.3V output current:  150mA max
-Flash memory: 32 kB (0.5kB used by bootloader - included)
-Static RAM (SRAM): 2 kB
-EEPROM: 1 kB
-Clock speed: 16MHz