I've moved to a simple 12F683 to drive the chip and I could get readings, but nothing valid as for results

now with your suggestion it seems to be getting better!

well at least for the pressure reading which in the spec sheet should be in the 30000 range.
I get 37771

still have a bug with temperature reading tough....
I get 29591 where the spec sheet call for 4100 as reference(D2).
It also swing a lot more than expected over time. With my finger on the sensor it climbs to 30096 and those should be degre units..

I will dig into that a bit more

thanks for the suggestion