ATMEL ATTINY84-20PU 8-BIT 20MHz MCU (2 PACK)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> 8 Bit Data Bus </span></li><li><span class="a-list-item"> 20 MHz Max Clock Frequency </span></li><li><span class="a-list-item"> 8 KB Program Memory Size </span></li><li><span class="a-list-item"> 2.7 V to 5.5 V Operating Supply Voltage </span></li><li><span class="a-list-item"> 14 Pins - 12 Usable I/O Pins </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51zp2Hks7IL.jpg" noproxy>