
Functional Description
(Continued)
Extended Repetitive Interrupt Mode
is shown in Figure 14
and operates in the following way: Once activated, all
interrupts remain activated until reset by a read of the
Interrupt Status Register 1. Once activated all T_CRIT_A
interrupts remain activated until reset by a read of the
Extended Mode Register 1. Temperature conversion data
less than or equal to T
will activate interrupt. Interrupt will
continue to be activated until the temperature data exceeds
(T
+ T
). Exceeding T
activates interrupt.
Interrupt will continue to be activated at the end of a
conversion until the temperature data is less than or equal to
(T
T
). T_CRIT_A interrupts are activated when
the temperature exceeds T_CRIT. T_CRIT_A interrupts will
no longer be activated if the temperature data at the end of
a conversion is less than or equal to( T_CRIT T
HYST
).
Extended One-Time Interrupt Mode
is shown in Figure 15
and operates in the following way: Once activated all
interrupts remain activated until reset by a read of the
Interrupt Status Register 1. Once activated all T_CRIT_A
interrupts remain activated until reset by a read of the
Extended Mode Register 1. An interrupt will be activated
when the data of a temperature conversion is less than or
equal to T
. Interrupt cannot again be activated until the
data from a temperature conversion is greater than (T
+
T
). An interrupt will be activated when the data of a
temperature conversion is greater than T
. Interrupt
cannot again be activated until the data of a temperature
conversion is less than or equal to (T
T
).
T_CRIT_A interrupt is activated when the data from a
temperature conversion is greater than T_CRIT.Activation of
an T_CRIT_A interrupt cannot occur until the data from a
temperature conversion is less than or equal to ( T_CRIT
T
HYST
).
Extended Comparator Mode
is shown in Figure 16 and
operates in the following way: Interrupt is activated when the
data from a temperature conversion is less than or equal to
T
. Interrupt is reset when the data from a temperature
conversion exceeds (T
+ T
). Exceeding T
will
activate interrupt. This interrupt will be reset when data from
a temperature conversion is less than or equal to (T
HIGH
T
).
T_CRIT_A
interrupt
temperature exceeds T_CRIT. T_CRIT_A remains active
until the data from a temperature conversion is less than or
equal to (T_CRIT T
HYST
) resets it.
is
activated
when
the
DS100072-20
*
Note:
Interrupt resets occur only when interrupt Status Register 1 is read.
FIGURE 14. Extended Repetitive Interrupt Mode
DS100072-21
*
Note:
Interrupt resets occur only when interrupt Status Register 1 is read.
FIGURE 15. Extended One-Time Interrupt
DS100072-19
*
Note:
Interrupt resets occur only when interrupt Status Register 1 is read.
FIGURE 16. Extended Comparator Mode
L
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