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LPS25HB датащи(PDF) 26 Page - STMicroelectronics

номер детали LPS25HB
подробное описание детали  MEMS pressure sensor: 260-1260 hPa absolute digital output barometer
PDF  40 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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LPS25HB датащи(HTML) 26 Page - STMicroelectronics

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Register description
LPS25HB
26/40
DocID027112 Rev 2
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)
76
54
32
1
0
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).



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