atmega328 datasheet

{"cid":"91090532","title":"2014 UNO R3 Development Arduino Controller Board Improved Version CH340G with USB Cable","imgUrl":"https:\/\/img.chinax.com\/nimg\/1a\/80\/9f699bcabcd417e35631407436e2-200x200-1.jpg","attrs":{"Brand Name":"UNO","Model Number":"UNO R3","Minimum Order Quantity":"1pc","Delivery Time":"1-3 days","Certification":"CE","Place of Origin":"ShenZhen China","Payment Terms":"L\/C, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"10000pcs\/Month","Packaging Details":"Standard Packaging","Color":"Blue","Controller":"ATmega328P-AU","Input Voltage (recommended)":"7-12V","Digital IO pins":"14 (of which 6 provide PWM output)","DC Current per I\/O Pin":"40 mA","USB Port":"type B USB","Clock Speed":"16 MHz","Operating voltage":"5V","Input Voltage (limits)":"6-20V","Pack Size":"12cm*12cm*8cm","Board Weight":"21g"}}