LPS331AP Datasheet, PDF (17/36 Pages) STMicroelectronics – MEMS pressure sensor: 260-1260 mbar absolute digital output barometer

LPS331AP
7
Register description
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.
REF_P_XL
Reference pressure (LSB data)
7
REFL7
6
REFL6
5
REFL5
4
REFL4
3
REFL3
2
REFL2
1
REFL1
0
REFL0
Address:
Type:
Reset:
Description:
08h
R/W
00h
This reference pressure register contains the lower part of the reference pressure that
is sum to the sensor output pressure. The full value is REF_P_XL & REF_P_H &
REF_P_L and is represented as 2’s complement.
[7:0] REFL7 - REFL0: Reference pressure LSB data. Default value: 00h
REF_P_L
16
REFL15
15
REFL14
14
REFL13
13
REFL12
Reference pressure (middle part)
12
REFL11
11
REFL10
10
REFL9
9
REFL8
Address:
Type:
Reset:
Description:
09h
R/W
00h
This register contains the middle part of the reference pressure that is sum to the
sensor output pressure.
The full value is REF_P_XL & REF_P_H & REF_P_L and is represented as 2’s
complement.
[16:9] REFL15 - REFL8: Default value: 00h
Doc ID 022112 Rev 7
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