Unused pin configuration

[hajianik]

Hi,

My target is S32k144 and we're required to place the part in one of the low power mode (have not decided which one yet) and therefore need to know which is the best way to configure the unused pin to prevent any unwanted current consumption through high input impedance CMOS pins.

there is a recommendation to:

• Pull all unused analog pins low via an external resistor.
• leave all the digital unused pins in their default state(inactive)

Is this correct?

Not sure what inactive state is? are they floating ? if yes they should not be configured as such.

Please educated me.

Thanks,

[danielmartynek · Accepted solution]

Hi,

Please refer to AN542 Hardware Design Guidelines for S32K1xx Microcontrollers.

See Chapter 8 Unused pins.

Regards,

Daniel

[jinshuaixu]

thank you for you response，it is a useful message for me.