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BMP280 Datasheet(PDF) 16 Page - Bosch Sensortec GmbH |
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BMP280 Datasheet(HTML) 16 Page - Bosch Sensortec GmbH |
16 / 49 page ![]() Datasheet BMP280 Digital Pressure Sensor Page 16 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. 3.6.1 Sleep mode Sleep mode is set by default after power on reset. In sleep mode, no measurements are performed and power consumption (IDDSM) is at a minimum. All registers are accessible; Chip-ID and compensation coefficients can be read. 3.6.2 Forced mode In forced mode, a single measurement is performed according to selected measurement and filter options. When the measurement is finished, the sensor returns to sleep mode and the measurement results can be obtained from the data registers. For a next measurement, forced mode needs to be selected again. This is similar to BMP180 operation. Forced mode is recommended for applications which require low sampling rate or host-based synchronization. time IDDSL IDDSB IDDP IDDT POR Mode[1:0] = 01 Data readout osrs_t osrs_p Write settings Mode[1:0] = 01 Figure 3: Forced mode timing diagram 3.6.3 Normal mode Normal mode 16ontinuously cycles between an (active) measurement period and an (inactive) standby period, whose time is defined by tstandby. The current in the standby period (IDDSB) is slightly higher than in sleep mode. After setting the mode,measurement and filter options, the last measurement results can be obtained from the data registers without the need of further write accesses. Normal mode is recommended when using the IIR filter, and useful for applications in which short-term disturbances (e.g. blowing into the sensor) should be filtered. time IDDSL IDDSB IDDP IDDT POR Mode[1:0] = 11 Data readout when needed osrs_t osrs_p Write settings tstandby Figure 4: Normal mode timing diagram |
Similar Part No. - BMP280 |
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Similar Description - BMP280 |
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