Low/High width of GPIO input

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Low/High width of GPIO input

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takayuki_ishii
Contributor IV

Hello community,

We hope to use a gpio input for external interrupt.

To detect low input as interrupt by GPIO module, how long does it keep low level?

How about rise/fall edge detect setting?

The other hands, we hope to know how long it must keep Hi/Low level

for general purpose input signal?

It has a same question in this thread.

      About GPIO external interrupt 

But no answer it have.

Don't you have some information about it?

Best regards,

Ishii.

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Carlos_Musich
NXP Employee
NXP Employee

Hi Takayuki,

you may look in the datasheet for the Slew Rate parameter (E.g. Table 28 and Table 29 in IMX6DQCEC.pdf). This will indicate the time required for a signal to be considered a real value and that is the minimum time the signal must remain unchanged.


Regards,
Carlos
NXP Technical Support
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743 Views
Carlos_Musich
NXP Employee
NXP Employee

Hi Takayuki,

you may look in the datasheet for the Slew Rate parameter (E.g. Table 28 and Table 29 in IMX6DQCEC.pdf). This will indicate the time required for a signal to be considered a real value and that is the minimum time the signal must remain unchanged.


Regards,
Carlos
NXP Technical Support
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

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takayuki_ishii
Contributor IV

Hello Carlos,

Thank you for your response.

I will ask it to my customer.

Best regards,

Ishii.

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742 Views
takayuki_ishii
Contributor IV

Hello community,

Does anyone have any information?

Best regards,

Ishii.

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