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BMP280 Datasheet(PDF) 25 Page - Bosch Sensortec GmbH

Part # BMP280
Description  Digital Pressure Sensor
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Manufacturer  BOSCH [Bosch Sensortec GmbH]
Direct Link  https://www.bosch-sensortec.com
Logo BOSCH - Bosch Sensortec GmbH

BMP280 Datasheet(HTML) 25 Page - Bosch Sensortec GmbH

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Datasheet
BMP280 Digital Pressure Sensor
Page 25
BST-BMP280-DS001-19 | Revision 1.19 | January 2018
Bosch Sensortec
© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third
parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.
Note: Specifications within this document are subject to change without notice. Not intended for publication.
4.3.3 Register 0xF3 “status”
The “status” register contains two bits which indicate the status of the device.
Table 19: Register 0xF3 “status”
Register 0xF3
“status”
Name
Description
Bit 3
measuring[0]
Automatically set to ‘1’ whenever a conversion is
running and back to ‘0’ when the results have been
transferred to the data registers.
Bit 0
im_update[0]
Automatically set to ‘1’ when the NVM data are being
copied to image registers and back to ‘0’ when the
copying is done. The data are copied at power-on-reset
and before every conversion.
4.3.4 Register 0xF4 “ctrl_meas”
The “ctrl_meas” register sets the data acquisition options of the device.
Table 20: Register 0xF4 “ctrl_meas”
Register 0xF4
“ctrl_meas”
Name
Description
Bit 7, 6, 5
osrs_t[2:0]
Controls oversampling of temperature data. See
chapter 3.3.2 for details.
Bit 4, 3, 2
osrs_p[2:0]
Controls oversampling of pressure data. See chapter
3.3.1 for details.
Bit 1, 0
mode[1:0]
Controls the power mode of the device. See chapter
3.6 for details.
Table 21: register settings osrs_p
osrs_p[2:0]
Pressure
oversampling
000
Skipped (output set to
0x80000)
001
oversampling ×1
010
oversampling ×2
011
oversampling ×4
100
oversampling ×8
101, Others
oversampling ×16


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