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AS621x
Register Description
Datasheet • PUBLIC
DS000677 • v2-00 • 2020-Feb-24
36 │ 15
The serial interface is the only active circuitry in the sleep mode in order to provide access to the
digital registers.
Entering the sleep mode will take some time (120 ms maximum) and the first conversion after the
sleep mode has been entered takes longer than the values specified in Figure 7. It is therefore
recommended when entering sleep mode to trigger a single shot conversion at the same time. After
150 ms (max), the device has then entered the sleep mode and subsequent conversion times are as
specified in Figure 7.
After resetting the SM bit to 0, the device enters the continuous conversion mode.
Figure 17:
Sleep Mode Configuration
Sleep Mode Bit
Operation Mode
0
Continuous Conversion Mode
1
Sleep Mode
6.2.5 Interrupt Mode
The interrupt mode bit defines whether the device operates in the temperature comparator mode or
the interrupt mode. This defines the operation of the ALERT output as described in the polarity section
bit.
Figure 18:
Interrupt Mode Configuration
Interrupt Mode Bit
Configuration Mode
0
Comparator Mode
1
Interrupt Mode
The comparator mode is characterized that if the temperature value exceeds the THIGH value, the
alert output is changed (e.g. from high to low if the polarity bit is set to 0 and vice versa). The alert
output stays in that condition until the measured temperature drops below the defined TLOW value.
The interrupt mode is characterized that it changes the alert output as soon as the measured
temperature crosses the THIGH or TLOW value threshold.
The alert bit has the same setting as the alert output if the device is set to comparator mode.