SI7013 Datasheet, PDF (33/43 Pages) Silicon Laboratories – I2C HUMIDITY AND TWO-ZONE TEMPERATURE SENSOR

Si7013
Bit
D7
D6:D5
Name
RSVD
MEASURE_MODE
[1:0]
Function
Reserved
Measurement Mode. Selects the mode of the voltage measurement
function.
D6 D5 Function
0
0 Voltage measurement hold master mode without
thermistor correction. This is the recommended
mode when temperature or humidity measure-
ments are done.
0
1 Voltage measurement hold master mode with
thermistor correction. No humidity or internal tem-
perature measurements are allowed in this mode.
1
0 Voltage measurement no hold master mode with no
thermistor correction.
1
1 Voltage measurement no hold master mode with
thermistor correction. No humidity or internal tem-
perature measurements are allowed in this mode.
Note: If no hold master mode is selected, ALL commands are no hold.
D4
CONV_TIME
Conversion Time. Selects conversion time and noise floor of the
voltage ADC.
0 Conversion time 7 ms max noise floor 25 µV typical with
V_REF = 1.25 V.
1 Conversion time 3.1 ms max noise floor 50 µV typical
with V_REF = 1.25 V.
D3
RSVD
Reserved
D2
VIN_BUF
0: VINN and VINP inputs are unbuffered
1: VINN and VINP inputs are buffered
D1
VREFP
0: A/D reference source is internal 1.25V
1: A/D reference source is VDDA
D0
VOUT*
0: VOUT pin is set to GNDD
1: VOUT pin is set to VDDD
Note: Default is powerup state of VOUT pin
*Note: VOUT is generally used for driving an external thermistor interface. Default setting is the same as the power up
setting.
Rev. 0.95
33