maximun voltage in INT pin of RTC PCF8563

[diegoperez]

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

[TomasVaverka · Accepted solution]

Hi Diego,

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

Best regards,

Tomas