topic Re: NC pins on Kinetis K20 based MK20FN1M0VMD12 quick easy question in Kinetis Microcontrollers

NC pins on Kinetis K20 based MK20FN1M0VMD12 quick easy question

sherry_zahid — Fri, 23 Oct 2015 20:42:43 GMT

Hi,

Just a quick question in reference to the datasheet of K20 sub-family document number "K20P144M120SF3". Looking at page 73 for pin assignments.

I am using the 144 pin LQFP package, and I had a question about the pins that are NC (not connected) on my IC, e.g. C10, M5, A10, B10.

Do these pins not have a physical electrical connection to the IC? what happens if I connect 5V to any of these pins? Can anything go wrong If I leave this pin floating? Thanks in advance

Kind regards

Sherry

Re: NC pins on Kinetis K20 based MK20FN1M0VMD12 quick easy question

xiangjun_rong — Mon, 26 Oct 2015 03:47:46 GMT

Hi, Sherry,

The "NC" means "No Connection", which means that you should leave these pins floating, in other words, do not connect anything to the pins. Because of test or something else, the "NC" pins may have functions which we do not want to have customer use or we have for only test, so do not connect 5V to the "NC" pins.

Hope it can help you

XiangJun Rong

Re: NC pins on Kinetis K20 based MK20FN1M0VMD12 quick easy question

sherry_zahid — Mon, 26 Oct 2015 12:24:44 GMT

Thanks XiangJun

That really helps,

Kind regards,

Sherry