topic Re: GPIO power up time issue in S32K

GPIO power up time issue

Bhuvana — Tue, 16 Aug 2022 06:30:10 GMT

MCU: FS32K144UAT0VLLT
100LQFP

before the GPIO pin initialization, PTA17 is high always (only that I have checked). That should be in low how to make it low.

Re: GPIO power up time issue

Robin_Shen — Tue, 16 Aug 2022 08:40:53 GMT

Hi Bhuvana,

PTA17 default DISABLED(High impedance). If you want to make it low before initialization, please add external pull-down mechanism.

Best Regards,
Robin
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Re: GPIO power up time issue

Bhuvana — Tue, 16 Aug 2022 08:48:50 GMT

means all the mentioned pin (others section)will be like this only ?

Re: GPIO power up time issue

Robin_Shen — Tue, 16 Aug 2022 09:02:23 GMT

All GPIO(except PTA4\PTA5\PTC4\PTC5) default Disabled High impedance.

The on-chip peripheral modules are disabled and the non-analog I/O pins are initially configured as disabled. The pins with analog functions assigned to them are configured for their analog functions after reset.

Re: GPIO power up time issue

Bhuvana — Wed, 17 Aug 2022 08:20:20 GMT

Thanks for your info @Robin_Shen