maximun voltage in INT pin of RTC PCF8563

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maximun voltage in INT pin of RTC PCF8563

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diegoperez
Contributor II

Hi,

I am using RTC PCF8563 powered at 3.3V but would like to connect the INT pin to a 5V pull up. Is it suitable regardless the device is powered at lower voltage?

Thanks

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TomasVaverka
NXP TechSupport
NXP TechSupport

Hi Diego,

 

There will not be a problem as long the pull-up resistor is > ~500 Ohms.

Table 28.JPG

 

Best regards,

Tomas

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TomasVaverka
NXP TechSupport
NXP TechSupport

Hi Diego,

 

There will not be a problem as long the pull-up resistor is > ~500 Ohms.

Table 28.JPG

 

Best regards,

Tomas

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