The ATmega328 UNO DEVELOPMENT BOARD (Arduino® Uno compatible) 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 analogue 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; connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
Features:

1. 100% compatible with Arduino® UNO

Specifications:

1. microcontroller: ATmega328
2. operating voltage: 5 VDC
3. input voltage (recommended): 7-12 VDC
4. input voltage (limits): 6-20 VDC
5. digital I/O pins: 14 (of which 6 provide PWM output)
6. analogue input pins: 6
7. DC current per I/O pin: 40 mA
8. DC current for 3.3 V pin: 50 mA
9. flash memory: 32 kB (ATmega328) of which 0.5 kB used by bootloader
10. SRAM: 2 kB (ATmega328)
11. EEPROM: 1 kB (ATmega328)
12. clock speed: 16 MHz
13. length: 68.6 mm
14. width: 53.4 mm
15. weight: 25 g

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