Hi Team,
can we use a 3,3V MCU controlling the de-bounce pins DB0/DB1? I would assume we have the same 200kOhm pull up resistors to 5V internally like a the other logic pins. When connecting an MCU driving the 3,3V the internal pull up would try to lift even further to 5V. The MCU may have ESD cells that starts conducting and pulls the voltage slightly down. So it will end up somewhere between 3,3V to 5V. The leakage current would be acceptable. Could you please let me know what the Logic-High threshold max is that we need to guarantee? We could not find this figure in the datasheet.
It is important to understand is a additional level translator is absolutely needed or if we can interface with a3,3V Logic directly.
many thanks
Lutz