I3C Support from CCS?

djsb · Joined: 29 Jan 2011 Posts: 50

The PIC18F16Q20 supports I3C. I wonder if anyone is using this chip and if so are they using I3C. Does CCS support I3C yet? It seems to use only 2 wires and combines I2C and SPI. I've just started reading about it in the August 2025 edition of Practical Electronics magazine (a UK electronics magazine). Any info yet? Thanks.

Ttelmah · Joined: 11 Mar 2010 Posts: 19882

You are missing the key point on this. The device only implements an I3C
'target' device, _not_ a master. It can't control an I3C bus, it is a 'slave'
device on the bus.
It can only be used with another device providing the master. So you are not
going to get any utility or speed from this till you have the master device....
So, what do you intend to use as the master device??????.

It isn't going to be any use, until they launch some master PIC's for this
I'm afraid. Sad

It is also limited in the modes it can support. As a peripheral, it is designed
to allow you to implement the PIC as a peripheral on this bus, not anything
more.