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LPS22HBTR Datasheet(PDF) 38 Page - STMicroelectronics

Part # LPS22HBTR
Description  MEMS nano pressure sensor: 260-1260 hPa absolute digital output barometer
PDF  49 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LPS22HBTR Datasheet(HTML) 38 Page - STMicroelectronics

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Register description
LPS22HB
38/49
DocID027083 Rev 5
When the ODR bits are set to a value different than '000', the device is in Continuous
mode and automatically acquires a set of data (pressure and temperature) at the frequency
selected through the ODR[2:0] bits.
Once the additional low-pass filter has been enabled through the EN_LPFP bit, it is possible
to configure the device bandwidth acting on the LPFP_CFG bit. See Table 18 for low-pass
filter configurations.
The BDU bit is used to inhibit the update of the output registers between the reading of upper,
middle and lower register parts. In default mode (BDU = ‘0’), the lower and upper register parts
are updated continuously. When the BDU is activated (BDU = ‘1’), the content of the output
registers is not updated until PRESS_OUT_H (2Ah) is read, avoiding the reading of values
related to different samples.
9.6
CTRL_REG2 (11h)
Control register 2
Table 18. Low-pass filter configurations
EN_LPFP
LPFP_CFG
Additional low-pass filter status
Device bandwidth
0
x
Disabled
ODR/2
1
0
Enabled
ODR/9
1
1
Enabled
ODR/20
7
6
5
43210
BOOT
FIFO_EN
STOP_ON_FTH
IF_ADD_INC
I2C_DIS
SWRESET
0(1)
1. This bit must be set to ‘0’ for proper operation of the device
ONE_SHOT
BOOT
Reboot memory content. Default value: 0
(0: normal mode; 1: reboot memory content). The bit is self-cleared when the BOOT
is completed.
FIFO_EN
FIFO enable. Default value: 0
(0: disable; 1: enable)
STOP_ON_FTH
Stop on FIFO watermark. Enable FIFO watermark level use. Default value: 0
(0: disable; 1: enable)
IF_ADD_INC
Register address automatically incremented during a multiple byte access with a
serial interface (I2C or SPI). Default value: 1
(0: disable; 1 enable)
I2C_DIS
Disable I2C interface. Default value: 0
(0: I2C enabled;1: I2C disabled)
SWRESET
Software reset. Default value: 0
(0: normal mode; 1: software reset).
The bit is self-cleared when the reset is completed.
ONE_SHOT
One-shot enable. Default value: 0
(0: idle mode; 1: a new dataset is acquired)



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