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K70 - Running VDD and VDDINT at different levels

Question asked by Marko Severin on Dec 16, 2012
Latest reply on Dec 19, 2012 by Marko Severin

Hi guys,

I'm just starting out with the K70 and one thing i've noticed is that on the K70 Tower, the VDDINT (core power) is powered from 3.3V. Wouldn't it make more sense to power the VDDINT from a 1.8V supply and thus save power? I went through the datasheet and I didn't find the info, if the VDDINT can be run on a lower level than VDD, i.e. VDD on 3.3V and VDDINT on 1.8V. Can this be done?

 

Also, i've noticed that the K70 tower is routed on a 12-layer PCB. You can route a Core I7 on a 12 layer PCB. Why did freescale decide to do so for a microcontroller?

 

Thanks and best regards,

Marko Severin

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