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LIS3DH temperature sensor interpretation

MLund
Associate

Is the accelerometer temperature output in OUT_ADC3 still 8 bits if the LPen bit in CTRL_REG1 is cleared?

If that is the case, does the temperature change with one digit in OUT_ADC3_H per °C?

1 REPLY 1
Eleon BORLINI
ST Employee

Hi Mattis, the temperature sensor is enabled setting to 1 the TEMP_EN bit (bit 6) to 1 in TEMP_CFG_REG (1Fh) register. Its output is converted to 8bit by the internal ADC and it is put in the OUT_3_H register (0Dh). The nominal sensitivity is 1 LSB/°C, independent from the selected mode (low power, normal or high resolution. The output is calibrated in order to put the 0 level output at 25°C. Regards