<https://cn.element14.com/texas-instruments/msp430f2121ipwr/mcu-16bit-16mhz/dp/3385900>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://cn.element14.com/texas-instruments/msp430f2121ipwr/-16-16mhz/dp/3385900>