What is the default level of GPIO after S12XET256 power up and befor control？
In the RM you can see specification for each available port. Some of them has GPIO function after reset. In the DDRx register for associated port you can see default state for associated pin. For example, Port P is configured as input (see DDRP) and in the PERP register you can see default state of pull device. Pull device is disabled.
I hope it helps you.
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