LPS25H Datasheet, PDF (26/45 Pages) STMicroelectronics – Embedded temperature compensation

Register description
LPS25H
ODR2
1
1
Table 18. Output data rate bit configurations
ODR1
ODR0
Pressure (Hz)
Temperature (Hz)
1
0
Reserved
1
1
Reserved
DIFF_EN bit is used to enable the circuitry for the computing of differential pressure output.
In default mode (DIFF_EN=’0’) the circuitry is turned off. It is suggested to turn on the
circuitry only after the configuration of REF_P_x and THS_P_x.
BDU bit is used to inhibit the output registers update between the reading of upper and
lower register parts. In default mode (BDU = ‘0’), the lower and upper register parts are
updated continuously. If it is not sure to read faster than output data rate, it is recommended
to set BDU bit to ‘1’. In this way, after the reading of the lower (upper) register part, the
content of that output registers is not updated until the upper (lower) part is read too.
This feature avoids reading LSB and MSB related to different samples.
RESET_AZ bit is used to Reset AutoZero function. Reset REF_P reg (@0x08..0A) set
pressure reference to default value RPDS reg (0x39/3A). RESET_AZ is self cleared. See
AutoZero function.
SIM bit selects the SPI serial interface mode.
0: (default value) 4-wire SPI interface mode selected.
1: 3-wire SPI interface mode selected
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