User Manual

DS1722
12 of 13
TIMING DIAGRAM: SPI WRITE DATA TRANSFER Figure 12
*SCLK can be either polarity, timing shown for CPOL = 1.
NOTES:
1. All voltages are referenced to ground.
2. Logic 0 voltages are specified at a sink current of 4 mA.
3. Logic 1 voltages are specified at a source current of 1 mA.
4. I
CC
specified with SCLK=V
DDD
and CE=GND. Typical I
CC1
is 0.25 µA and I
CC
is 0.3 mA at 25°C
and V
DDD =
2.65V
.
5. Measured at V
IH
=0.7 V
DDD
or V
IL
=0.2 V
DDD
and 10 ms maximum rise and fall time.
6. Measured with 50 pF load
7. Measured at V
OH
=0.7 V
DDD
or V
OL
=0.2 V
DDD
. Measured from the 50% point of SCLK to the V
OH
minimum of SDO.
8. Figure 13 shows mean thermometer error for a pre-characterization sample. Data covering a larger
sample over the full temperature range is pending.