HDPM01 Datasheet, PDF (7/19 Pages) List of Unclassifed Manufacturers – Integrated pressure sensor

HDPM01
6. Pressure and Temperature Measurement
The main function of HDPM01 system is to convert the uncompensated pressure and temperature
signal from a pressure sensor. After the conversion, the following two values can be obtained:
. measured temperature “D2”
. measured pressure
“D1”
As the sensor is strongly temperature dependent, it is necessary to compensate for these effects.
Therefore 10 sensor-specific coefficients are stored on the HDPM01 at our manufacturing facility, and
they allow an accurate software compensation in the application.
The 7 coefficients are:
. Sensitivity coefficient
“C1”
. Offset coefficient
“C2”
. Temperature Coefficient of Sensitivity “C3”
. Temperature Coefficient of Offset
“C4”
. Reference Temperature
“C5”
. Temperature Coefficient of Temperature “C6”
. Offset Fine Tuning
“C7”
4 sensor parameter
. Sensor Specific Parameter
“A,B,C,D”
Note: Make sure to pull low XCLR before start to Read these coefficients or the data read out is
probably incorrect
Parameter Range(Hex:Dec)
C1
0x100 -- 0x7FFF : 256 -- 65535
C2
0x00 -- 0xFFFF ; 0 -- 8191
C3
0x00 -- 0x400 ; 0 -- 3000
C4
0x00 -- 0x1000 ; 0 -- 4096
C5
0x1000 -- 0xFFFF ; 4096 -- 65535
C6
0x00 -- 0x4000 ; 0 -- 16384
C7
0x960 -- 0xA28 ; 2400 -- 2600
C,D
0x01 -- 0x0F ; 1 -- 15
A,B
0x01 -- 0x3F ; 1 -- 63
D1
0x00 -- 0xFFFF ; 0 -- 65535
D2
0x00 -- 0xFFFF ; 0 -- 65535
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