Data Sheet

DocID027112 Rev 4 33/50
LPS25HB Register description
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8 Register description
The device contains a set of registers which are used to control its behavior and to retrieve
pressure and temperature data. The register address, made up of 7 bits, is used to identify
them and to read/write the data through the serial interface.
8.1 REF_P_XL (08h)
Reference pressure (LSB data)
The Reference pressure value is a 24-bit data subtracted from the sensor output
measurement and it is composed of REF_P_H (0Ah), REF_P_L (09h) and REF_P_XL
(08h). The value is expressed as 2’s complement.
The reference pressure value is subtracted from the sensor output measurement, to detect
a measured pressure beyond programmed limits (refer to INTERRUPT_CFG (24h)
register), and is used for the Autozero function.
8.2 REF_P_L (09h)
Reference pressure (middle part)
8.3 REF_P_H (0Ah)
Reference pressure (MSB data)
76543210
REFL7 REFL6 REFL5 REFL4 REFL3 REFL2 REFL1 REFL0
REFL[7:0] This register contains the low part of the reference pressure value.
15 14 13 12 11 10 9 8
REFL15 REFL14 REFL13 REFL12 REFL11 REFL10 REFL9 REFL8
REFL[15:8] This register contains the mid part of the reference pressure value.
Refer to REF_P_XL (08h).
23 22 21 20 19 18 17 16
REFL23 REFL22 REFL21 REFL20 REFL19 REFL18 REFL17 REFL16
REFL[23:16] This register contains the high part of the reference pressure value.
Refer to REF_P_XL (08h).