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VDDA, VSSA, VRH and VRL left unconnected

Question asked by Matthieu Simon on Oct 24, 2013
Latest reply on Oct 29, 2013 by Stan Chernikov

Hello everyone,


I'm currently designing a board using a Coldfire MCF52259.


I want to use the port PAN[7:0] as GPIOs, thus I won't deal with the ADC module at all.


My question is, can the pins VDDA, VSSA, VRH and VRL be left unconnected/not routed on the PCB ?

Or do I need to tight them to some potential like VCC/GND ?


Thank you !