I3C is the next generation of the two-wire interface and meets the need for faster data transfers and lower power consumption while adding new features such as dynamic addressing, hot-join, in-band interrupts and device resets over the two-wire bus.
Learn more:
PIC18-Q20 Family: https://mchp.us/4akN9jK
PIC18F16Q20 Microcontroller: https://mchp.us/3PB2Db3