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MK24FN256VDC12 can enable internal pull-up register when open drain output

Question asked by Isao Takashima on Feb 15, 2018
Latest reply on Feb 22, 2018 by Jorge Antonio Alcala Vazquez

I made the our evaluation board using the MK24FN256VDC12.

I want to reset external device using PTA1 with open drain output mode (PORTA_PCR1[ODE] = 1). I understand that require external pull-up resistor in this case, but our board does not have it.

 

Can I use internal pull-up resistor by PORTA_PCR1[PE] = 1 and PORTA_PCR1[PS] = 1 in open drain mode?

 

Anyway, I confirmed that I can use internal pull-up resistor with above settings (PE=1, PS=1) in open drain mode (ODE=1) using FRDM-K64F.

 

Please reply as soon as possible.

 

Best regards,

Takashima

 

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