We are using NT3H211(NTAG) with I2C for mobile and MCU controlling. In datasheet, cheapt11, it mentioned: "If both interfaces are powered by their corresponding source, only one interface has access to the EEPROM and SRAM according to the "first-come, first-serve" principle".
So, here's the question, The mobile and MCU are both controlling NFC. The mobile finished NFC TAG read/write, and keep connecting NFC TAG (Mobile is still closed to NFC). How to change the control to MCU??