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T2080 Refernce Design RTC INT Pin

Question asked by Hemant Kumar Tiwari on Jun 22, 2020
Latest reply on Jun 22, 2020 by Hemant Kumar Tiwari

In T2080 Refernce board schematic, why INT PIN OF DS1339U-33+ RTC is Pulled up by 1.8V?

As the IC operating Voltage is 3.3V it should be pulled up using 3.3V and then using level translator it should connect to 1.8V of T2080 pin.

Can you explain the logic behind this connection?