S12 / MagniV MicrocontrollersのトピックS12XEP100 PORTA7 problem

S12XEP100 PORTA7 problem

dashuangshengds — Wed, 21 Aug 2019 08:49:33 GMT

S12XEP100 GPIO output is not follow the software control.

I use PORTA7 as output. After my ECU power on, I set the GPIO is high and the pin voltage is high. When the ECU run few hours, the PORTA7 pin voltage is 0V, not high level.

So I check the PORTA register, the DDR and DATA is follow the design and not changed during the running.

I want to know, is there any other cause for this problem? Thank you!

Re: S12XEP100 PORTA7 problem

lama — Thu, 22 Aug 2019 07:02:04 GMT

Hi,

you do not describe port connections (load) and entire setup. Pin is open drain after reset.

Only brief suggestion, PUCR_PUPAE=1;

Best regards,

Ladislav

Re: S12XEP100 PORTA7 problem

dashuangshengds — Thu, 22 Aug 2019 07:40:23 GMT

Hi， thank you reply!