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GPIO Pin's State on power-up

Question asked by Eduard Razumovsky on Sep 1, 2015
Latest reply on Jun 18, 2016 by Gaston Schelotto

Hello,

 

I'm designing a system with K64 MCU

My question regarding all GPIO's state on power-up :

1. The GPIO's state on boot is output or input ? if so, is it PU/PD/HiZ ?

2. What doe's it mean that the default function of a GPIOs is "DISABLED" ?

 

Looking at the reference manual - http://cache.freescale.com/files/microcontrollers/doc/ref_manual/K64P144M120SF5RM.pdf

Page 244, chapter 10.2.2 Port control and interrupt summary

"Pull enable at reset - Disabled" - so i can understand from that that the GPIO is defined as Input Hi-Z ?

 

Please clarify this issue for me

 

Thanks & Regards

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