My application will use NFC to either
- As a passive means of reading an identifier and to store or collect some simple information when a battery is discharged. In this case the I2C bus will be low. Also report that the battery condition.
- As a passive or powered means of doing the above plus pass information such as BlueTooth and Long range wireless keys transferred via IC2. Perhaps use NFC for some debugging as well.
I appreciate that I2C may need 10 clocks or something to recover from being in the wrong mode. That is fine.
- My question is in (1) will the NFC operate correctly as a passive NFC device. That is with the I2C but pin held low during normal operation?