LPS001WP Datasheet, PDF (20/30 Pages) STMicroelectronics – MEMS pressure sensor 300-1100 mbar absolute digital output barometer

Register description
8
Register description
LPS001WP
The device contains a set of registers which are used to control its behavior and to retrieve
pressure and temperature data. The registers address, made up of 7 bits, is used to identify
them and to read/write the data through the serial interface.
8.1
WHO_AM_I (0Fh)
Table 15. WHO_AM_I (0Fh) register
1
0
1
1
1
0
1
0
t(s) _{Device identification register.}
uc _{This read only register contains the device identifier which, for LPS001WP, is set to BAh.}
Prod _8.2
CTRL_REG1 (20h)
lete _{Table 16. CTRL_REG1 (20h) register}
so X
PD
ODR1
ODR0 DIFF_EN BDU
BLE
SIM
) ^{- Ob} Table 17.
t(s ^Reserved
duc ^PD
Pro _ODR1
te^ODR0
le^DIFF_EN
Obso ^BDU
CTRL_REG1 (20h) register description
Low power functionality. Default value: 0
(0: normal mode; 1: low-power activated)
Power down control. Default value: 0
(0: power-down mode; 1: active mode)
Output data rate selection. Default value: 00
(see Table 18)
Interrupt circuit enable. Default value: 0
(0: interrupt generation disabled; 1: interrupt circuit enabled)
Block data update. Default value: 0
(0: continuous update; 1: output registers not updated until MSB and LSB reading)
BLE
Big/little endian selection. Default value: 0
(0: little endian; 1: big endian)
SIM
SPI serial interface mode selection. Default value: 0
(0: 4-wire interface; 1: 3-wire interface)
PD bit allows to turn on the device. The device is in power-down mode when PD = ‘0’
(default value after boot). The device is active when PD is set to ‘1’.
ODR1 - ODR0 bits allow to change the output data rates of pressure and temperature
samples. The default value is “00” which corresponds to a data rate of 7 Hz for pressure
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Doc ID 18171 Rev 1