LPS25HB Datasheet, PDF (26/40 Pages) STMicroelectronics – MEMS pressure sensor: 260-1260 hPa absolute digital output barometer

Register description
8
Register description
LPS25HB
8.1
8.2
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.
REF_P_XL (08h)
Reference pressure (LSB data)
7
REFL7
6
REFL6
5
REFL5
4
REFL4
3
REFL3
2
REFL2
1
REFL1
0
REFL0
REFL[7:0] This register contains the low part of the reference pressure value.
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.
REF_P_L (09h)
Reference pressure (middle part)
15
REFL15
14
REFL14
13
REFL13
12
REFL12
11
REFL11
10
REFL10
9
REFL9
8
REFL8
REFL[15:8] This register contains the mid part of the reference pressure value.
Refer to REF_P_XL (08h).
8.3
REF_P_H (0Ah)
Reference pressure (MSB data)
23
REFL23
22
REFL22
21
REFL21
20
REFL20
19
REFL19
18
REFL18
17
REFL17
16
REFL16
REFL[23:16] This register contains the high part of the reference pressure value.
Refer to REF_P_XL (08h).
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