Gabor wrote:
> On Jul 24, 9:39 am, John_H <newsgr...@johnhandwork.com> wrote:
>
>>devices wrote:
>>>By the way, are royalties still due to Philips? Or have the copyrights
>>>expired. Just curious, i read something about it time ago.
>>
>>>bye, Jim
>>
>>If you limit yourself to 400 kHz and 10 bit addressing, no royalties.
>>Our company contacted the Philips legal folks a couple years ago to
>>clear it up for ourselves.
>
>
>
> Do you mean no more than 400 KHz and no more than 10 bits? Or
> should there be royalties for 100 KHz and 7 bit addressing?
> The last time I talked with Philips they said it was okay to
> use I2C if there were Philips chips on the bus. In our case
> this is generally true.

I was told recently by a NXP disti, that i2c expired a 'couple
of years ago'. It was always a loose coverage they had anyway,
many of the docs state ~"you are free to use, provided you
adhere to spec", but I think they did charge for the i2c logo/tm
and so there was a quasi-license.
In the embedded space, I doubt they could care either way.

There was a 3.4MHz spec, but I never saw silicon.
The new FM+ specs 20mA drivers, and lower pullups

-jg