SI7013 Datasheet, PDF (32/43 Pages) Silicon Laboratories – I2C HUMIDITY AND TWO-ZONE TEMPERATURE SENSOR

Si7013
6.1. Register Descriptions
Register 1. User Register 1
Bit
Name
Type
D7
RES1
R/W
D6
VDDS
R
Reset Settings = 0011_1010
Bit
D7; D0
Name
RES[1:0]
D6
VDDS
D5, D4, D3
D2
D1
RSVD
HTRE
RSVD
D5
D4
RSVD
R/W
D3
D2
D1
HTRE
RSVD
R/W
R/W
D0
RES0
R/W
Function
Measurement Resolution:
RH
00:
12 bit
01:
8 bit
10:
10 bit
11:
11 bit
Temp
14 bit
12 bit
13 bit
11 bit
VDD Status:
0:
1:
V_DD OK
V_DD Low
The minimum recommended operating voltage is 1.9 V. A transi-
tion of the VDD status bit from 0 to 1 indicates that VDD is
between 1.8 V and 1.9 V. If the VDD drops below 1.8 V, the
device will no longer operate correctly.
Reserved
1=On-chip Heater Enable
0=On-chip Heater Disable
Reserved
Register 2. User Register 2
Bit
Name
Type
D7
RSVD
R/W
D6
D5
MEASURE_ MEASURE_
MODE1
MODE0
R/W
R/W
D4
CONV_
TIME
R/W
Reset Settings = 0000_100x
D3
RSVD
D2
D1
VIN_BUF VREFP
D0
VOUT
R/W
R/W
R/W
R/W
32
Rev. 0.95