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BME280 Humidity/Pressure/Temp
BME280
Boschsensor environment
The BME280 is a compact digital sensor that measures humidity, pressure, and temperature. It features low power consumption and supports both I2C and SPI digital interfaces, making it suitable for battery-powered devices.
In stock
Specifications
30- Package Dimensions
- 2.5 x 2.5 x 0.93 mm
- Package Type
- LGA
- Interface
- I2C, SPI
- I2c Clock Speed
- 3.4 MHz
- Spi Clock Speed
- 10 MHz
- Operating Voltage Vdd
- 1.71 to 3.6 V
- Operating Voltage Vddio
- 1.2 to 3.6 V
- Supply Current Humidity Temp 1hz
- 1.8 µA
- Supply Current Pressure Temp 1hz
- 2.8 µA
- Supply Current All Sensors 1hz
- 3.6 µA
- Sleep Current
- 0.1 µA
- Operating Temperature Range
- -40 to 85 °C
- Operating Humidity Range
- 0 to 100 %RH
- Operating Pressure Range
- 300 to 1100 hPa
- Humidity Response Time 63 Percent
- 1 s
- Humidity Accuracy
- ±3 %RH
- Humidity Hysteresis
- ±1 %RH
- Humidity Resolution
- 0.008 %RH
- Humidity Noise Rms
- 0.02 %RH
- Humidity Long Term Stability
- 0.5 %RH/year
- Pressure Noise Rms
- 0.2 Pa
- Pressure Noise Rms Equivalent Altitude
- 1.7 cm
- Pressure Offset Temperature Coefficient
- ±1.5 Pa/K
- Pressure Offset Temperature Coefficient Equivalent Altitude
- ±12.6 cm/K
- Pressure Absolute Accuracy 0 To 65c
- ±1.0 hPa
- Pressure Resolution
- 0.18 Pa
- Pressure Long Term Stability
- ±1.0 hPa/year
- Temperature Absolute Accuracy 0 To 65c
- ±0.5 °C
- Temperature Resolution
- 0.01 °C
- Temperature Noise Rms
- 0.005 °C
Pinout
8| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | VDDIO | POWER | Supply voltage for I/O pins |
| 2 | SDO | SPII2C | SPI data output / I²C SDO |
| 3 | SDI | SPII2C | SPI data input / I²C SDA |
| 4 | SCK | SPII2C | SPI clock / I²C SCL |
| 5 | CSB | SPII2C | SPI chip select / I²C SDO (alternate address) |
| 6 | GND | GND | Ground |
| 7 | VDD | POWER | Main supply voltage |
| 8 | NC | — | Not connected |
Interactive pinout
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BME280
Click a pin to copy its name · tap a tag above to spotlight a bus.
Logic level & voltage
VDD is 1.71-3.6 V and VDDIO 1.2-3.6 V (per the datasheet specs) — a 3.3 V sensor that is not 5 V-tolerant. It speaks I2C and SPI.
Typical uses
- Indoor environment / weather monitoring
- Altitude estimation from barometric pressure
- HVAC and comfort sensing
Wiring notes & gotchas
- With a 5 V MCU, use a 3.3 V module or a level shifter on SDA/SCL.
- I2C needs pull-ups on SDA/SCL (most breakouts include them).
- Tie SDO to GND or VDDIO to pick the I2C address (0x76 / 0x77).