I3C aims to be a unified specification that combines the best from I2C, SPI, and UART. I3C is also designed to address the needs of the IoT market while still focusing upon being the chip-to-chip interface for connecting all sensors in a device to its application processor. I3C still makes use of a two-wire design and supports clock rates up to 12.5MHz. I3C is backed by Intel, Google, AMD, Mediatek, and many other companies.
Those wishing to learn more about the I3C Improved Inter-Integrated Circuit sensor interface can visit the MIPI Alliance to learn more.