FXPS7550 interpretation of min/max pressure values (P_MIN, P_MAX)

[michal_m]

Hello,

I'm working with FXPS7550 sensor and having problems interpreting the values of the "7.7.20 P_MAX and P_MIN - maximum and minimum absolute pressure value registers" registers.

I'm able to read "7.7.17 SNSDATA0_L, SNSDATA0_H" registers and correctly convert retrieved values with the "7.3.3.4 Absolute pressure output data scaling equation" which is: "pressure = (raw_data - offset) / sensitivity". My values being "offset = 28990" and "sensitivity = 14".

Example: for retrieved DATA0 value of 30374 I get around 98.8571 kPa.

Problem starts when I look at the P_MAX and P_MIN values. They are much smaller around 13500-13700. I cannot find anywhere in the datasheet how to transform them into kPa values.

Any help would be greatly appreciated.

[TomasVaverka]

Hello Michal,

Sorry for the delay in answering your question. I have to admit that the datasheet is really not clear when it comes to P_MAX and P_MIN values, I have asked the design team for clarification and will update this thread as soon as I have their response.

BR, Tomas