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The BME33M251 is a temperature and humidity sensor that composed of the temperature and humidity sensor, BM25S2021-1, and a breakout board. It includes a high-precision and low-power temperature and humidity sensor, and has been calibrated at factory.
The BME33M251 uses I2C or one-wire communication interface to read data, and has the same functions and specifications as the BM25S2021-1. The difference between them is that the BME33M251 breaks out the BM25S2021-1’s pins to match BMCOM and can directly connect to BMduino development boards, such as BM53A367A.
You can use the product with other development boards, such as Arduino UNO, as well.
The built-in BM25S2021-1 on the BME33M251 has the featured signal processing circuit and algorithm, the measurement data has extremely high stability and accuracy. The humidity data has been temperature-compensated, it can be used directly without secondary processing.
| Pin | Pin name | Function |
|---|---|---|
| 1 | GND | Ground |
| 2 | VDD | Power supply: 2.7V to 5.5V |
| 3 | SDA | I2C: data line
One-wire: communication data line |
| 4 | SCL/CS | I2C: clock line
One-wire: communication selection pin |
| 5 | NC | - |
| HS Code (reference) | 8504.50.90.00-5 |
|---|
