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Index of Contents
1. INTRODUCTION ..................................................................................................................................................... 5
2. TEST CONDITION .................................................................................................................................................. 6
3. ABSOLUTE MAXIMUM RATINGS ........................................................................................................................ 6
4. ELECTRICAL CHARACTERISTICS ..................................................................................................................... 6
5. OPERATION ........................................................................................................................................................... 8
5.1 OPERATING MODES ..................................................................................................................................................... 8
5.2 MEASUREMENT PRECISION AND RATE ........................................................................................................................ 8
5.3 SENSOR INTERFACE .................................................................................................................................................... 9
5.3.1 I2C interface ...................................................................................................................................................... 9
5.3.2 SPI interface .................................................................................................................................................... 10
5.4 INTERRUPT ................................................................................................................................................................. 11
5.5 FIFO OPERATION ...................................................................................................................................................... 11
5.6 CALIBRATION AND MEASUREMENT COMPENSATION ................................................................................................. 12
5.6.1
How
to
Calculate
Compensated Pressure
V
alues
................................................................................ 12
5.6.2
How to Calculate Compensated Temperature Values .............................................................................. 13
5.6.3
Compensation Scale Factors ........................................................................................................................ 13
6. APPLICATIONS .................................................................................................................................................... 14
6.1 MEASUREMENT SETTINGS AND USE CASE EXAMPLES ............................................................................................ 14
6.2 APPLICATION CIRCUIT EXAMPLE ............................................................................................................................... 15
6.3 CALCULATING ABSOLUTE ALTITUDE AND CALCULATING PRESSURE AT SEA LEVEL .................................................... 16
7. REGISTER MAP ................................................................................................................................................... 17
8. REGISTER DESCRIPTION .................................................................................................................................. 18
8.1 PRESSURE DATA (PRS_BN) ..................................................................................................................................... 18
8.1.1 PRS_B2 ........................................................................................................................................................... 18
8.1.2 PRS_B1 ........................................................................................................................................................... 18
8.1.3 PRS_B0 ........................................................................................................................................................... 19
8.2 TEMPERATURE DATA (TMP_TN) ............................................................................................................................... 19
8.2.1 TMP_B2 ........................................................................................................................................................... 19
8.2.2 TMP_B1 ........................................................................................................................................................... 20
8.2.3 TMP_B0 ........................................................................................................................................................... 20
8.3 PRESSURE CONFIGURATION (PRS_CFG) ............................................................................................................... 20
8.4 TEMPERATURE CONFIGURATION (TMP_CFG) ........................................................................................................ 22
8.5 SENSOR OPERATING MODE AND
S
TATUS
(MEAS_CFG) .................................................................................... 23
8.6 INTERRUPT AND FIFO CONFIGURATION (CFG_REG) ............................................................................................. 24
8.7 INTERRUPT STATUS (INT_STS) ............................................................................................................................... 26
8.8 FIFO STATUS (FIFO_STS) ...................................................................................................................................... 26
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