Hello everyone,

I am trying to understand the difference between I2C master and slave modes.
I thought this would be intuitive, but after looking at the data sheet for the
PIC16C74, I see that it appears only I2C slave mode is available.  It mentions
I2C master mode with firmware and I am not sure what they mean by "firmware"?

Are I2C EEPROMS and other peripherals are the I2C master?

I am looking at using I2C to communicate between two PIC processors.  How do
they have two way communication if both are in slave mode?  I am sure one has
to be master.

I am sure I am missing something.  I thought the PIC would be master and
peripherals would be slave.

I see master and slave modes for SPI, is that the best way for two PICS to
talk?


Confused

Jon