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S12XEP100 PORTA7 problem

Question asked by dashuang shengds on Aug 21, 2019
Latest reply on Aug 22, 2019 by dashuang shengds

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!