Pierre Bouffard

I2C Addressed As a Slave (IAAS) problem

Discussion created by Pierre Bouffard on Apr 26, 2010
Latest reply on Apr 27, 2010 by Pierre Bouffard



I am using two QE64 MCUs to communication with each other through I2C using the 10-bit addressing mode.  


The  slave generates an IAAS interrupt (the only interrupt) even if the master sends to an address different than the address configured in the slave. However, the master does effectively generate a No ACK interrupt because the slave does not answer and does not acknowledge (even if it generates the IAAS interrupt!).


Has anyone seen such a behavior before? Is this normal I2C behavior?


Thank you!