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LPS22CH Datasheet(PDF) 15 Page - STMicroelectronics

Part # LPS22CH
Description  High-performance MEMS nano pressure sensor: 260-1260 hPa absolute digital output barometer
PDF  55 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LPS22CH Datasheet(HTML) 15 Page - STMicroelectronics

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LPS22CH
Functionality
55
4.4
Interpreting pressure readings
The pressure data are stored in 3 registers: PRESS_OUT_H (2Ah), PRESS_OUT_L (29h),
and PRESS_OUT_XL (28h). The value is expressed as a 24-bit signed number (in 2’s
complement).
To obtain the pressure in hPa, take the complete 24-bit word and then divide by the
sensitivity 4096 LSB/hPa. This same interpretation is applied to pressure readings when
FIFO is enabled and the pressure data are stored in 3 registers:
FIFO_DATA_OUT_PRESS_XL (78h), FIFO_DATA_OUT_PRESS_L (79h), and
FIFO_DATA_OUT_PRESS_H (7Ah).
Figure 6. Pressure readings
Equation 1
Equation 2



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