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Exit K20D50  from LLS mode to active mode using UART RX pin to enable LLWU

Question asked by Joginder Rana on Apr 13, 2014
Latest reply on Apr 16, 2014 by Perla Andrea Moncada Fajardo

HI,

 

I am facing a problem in exiting k20d50 controller from the LLS mode to active mode. I did it using external LLWU GPIO pin. But for a certain application I need to enable LLWU mode by pulling the UART RX line active high.

This feature is given in the K20 Sub-Family Reference Manual (page number 67). I am just wondering to know how to activate this mode in MK20DX128VLH5 MCU.  I am using cw-10.5 and is equipped with processor expert.

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