Si7013
Rev. 0.95 5
Conversion Time
1
t
CONV
RH or Voltage Normal — 5.8 7 ms
RH or Voltage Fast — 2.6 3.1
ms
Temp Normal — 4 4.8
ms
Temp Fast — 1.5 1.8
ms
Powerup Time t
PU
From VDD ≥ 1.9 V to ready for a
conversion, 25 °C
—1825ms
From VDD ≥ 1.9 V to ready for a
conversion, full temperature range
——80ms
Table 3. I
2
C Interface Specifications
1
1.9 V
DD
3.6 V; T
A
= –40 to +85 °C (G grade) or –40 to +125 °C (I/Y grade) unless otherwise noted.
Parameter Symbol Test Condition Min Typ Max Unit
Hysteresis V
HYS
High-to-low versus low-to-
high transition
0.05 x V
DD
——V
SCLK Frequency
2
f
SCL
— — 400 kHz
SCL High Time t
SKH
0.6 — — µs
SCL Low Time t
SKL
1.3 — — µs
Start Hold Time t
STH
0.6 — — µs
Start Setup Time t
STS
0.6 — — µs
Stop Setup Time t
SPS
0.6 — — µs
Bus Free Time t
BUF
Between Stop and Start 1.3 — — µs
SDA Setup Time t
DS
100 — — ns
SDA Hold Time t
DH
100 — — ns
Notes:
1.
All values are referenced to V
IL
and/or V
IH
.
2. Depending on the conversion command, the Si7013 may hold the master during the conversion (clock stretch). At
above 300 kHz SCL, the Si7013 may hold the master briefly for user register and device ID transactions. At the highest
I
2
C speed of 400 kHz the stretching will be <10 µs.
3. Pulses up to and including 50ns will be suppressed.
Table 2. General Specifications (Continued)
1.9 < VDD < 3.6 V; TA = –40 to 85 °C (G grade) or –40 to 125 °C (I/Y grade); default conversion time unless otherwise noted.
Parameter
Symbol Test Condition Min Typ Max Unit
Notes:
1.
Initiating a RH measurement will also automatically initiate a temperature measurement. The total conversion time will
be t
CONV
(RH) + t
CONV
(T).
2. No conversion or I
2
C transaction in progress. Typical values measured at 25 °C.
3. Occurs once during powerup. Duration is <5 msec.
4. Occurs during I
2
C commands for Reset, Read/Write User Registers, Read EID, Read Firmware Version, Read/Write
Thermistor Coefficients and Read Thermistor. Duration is <50 μs for all commands except Read Thermistor, which has
<150 μs duration.
5. Additional current consumption when HTRE bit enabled. See Section “5.6. Heater” for more information.
