Yes, 328P is capable of synchronous serial operations. But this is a different (mixed) situation: the communication is asynchronous, BUT here the transmitter sends its own clock signal to the receiver... as it was synchronous mode (like in I2C)!
Yes, 328P is capable of synchronous serial operations. But this is a different (mixed) situation: the communication is asynchronous, BUT here the transmitter sends its own clock signal to the receiver... as it was synchronous mode (like in I2C)!