How to make use of 'Power ON Reset' while there is noise in Power?
As per the snippet from the data sheet that you show in our question you need to provide for another reset source. My suggestion is that you look into power on reset chips and use one of those to drive the nRESET pin on your MCU. 

There are a plethora of suitable devices that can be used for this purpose. If you are using a 3.3V power supply to the microcontroller you could try the MCP120-300 as a possible solution. It is a small three pin reset generator in a SOT-23 package.