- Datasheet Download Datasheet
- Stock & Prices $ Price & Stock for bmp280
- Part Number bmp280
- Manufacturer BOSCH
- Pin Count 8
- Part Category Integrated Circuit
- Package Category Other
- Footprint Name Other - 8-pin metal-lid LGA
- Released Date Nov 1, 2015
- Last Modified Date Mar 7, 2023 4:10 PM UTC
- Pinout / Pin List Click Here (Member Only)
bmp280 Details
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Manufacturer Part Number:
BMP280
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Rohs Code:
Yes
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Part Life Cycle Code:
Obsolete
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Manufacturer:
Bosch Sensortec
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YTEOL:
0
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Additional Feature:
IT ALSO HAS 3-WIRE INTERFACE
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Body Breadth:
2 mm
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Body Height:
0.82 mm
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Body Length or Diameter:
2.5 mm
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Mounting Feature:
SURFACE MOUNT
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Number of Bits:
20
bmp280 Frequently Asked Questions (FAQs)
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The recommended power-on sequence is to first apply VDDIO, then VDD, and finally start the communication interface (I2C or SPI). This ensures that the internal voltage regulators are properly initialized.
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The BMP280 has internal temperature compensation, but it's not enabled by default. To enable it, set the `t_sb` register to `0x01` and the `ctrl_meas` register to `0x45`. This will enable temperature compensation for pressure and temperature measurements.
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The `osr_h` and `osr_p` registers control the oversampling rates for humidity and pressure measurements, respectively. Increasing the oversampling rate improves measurement accuracy but increases power consumption and measurement time.
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To calculate the altitude, you need to know the sea-level pressure and the atmospheric pressure lapse rate. The BMP280 provides the pressure measurement in Pascals, which can be converted to altitude using the barometric formula or a lookup table.
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In `forced` mode, the BMP280 takes a single measurement and then enters sleep mode. In `normal` mode, the BMP280 continuously takes measurements at a rate set by the `ctrl_meas` register. `Normal` mode is suitable for most applications, while `forced` mode is useful for low-power or intermittent measurement scenarios.
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bmp280 Overview
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