Hi Cesar @CThir.1 ,
Temperature compensation can be separated, in first approximation, into two contribution: an ambient temperature (typ 25°C) offset and a linear gain.
The LPS25HB electronics allows the offset of both pressure and temperature sensors to be compensated using internal networks. This offset is calculated at 25°C in the production line and is written in the reserved registers. I can tell you that the register you are interested in is the REG 13h of the 11-1Fh reserved batch, but please be very careful while modifying any reserved registers' values. I cannot disclose more documentation on it.
There is also the whereas a gain trimming is realized by means of the second amplifier feedback capacitors. In this case, it is better to compensate the gain at software level, using an external reference sensor, since the soldering process on application board can have affected the stand-alone device behavior.
Consider however that from the datasheet the Absolute accuracy temperature across the T= 0 ~ +65 °C range is pretty good, +- 2°C.
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-Eleon
