ADT7320UCPZ AD [Analog Devices], ADT7320UCPZ Datasheet - Page 21

• Manufacturer Part Number: ADT7320UCPZ
• Manufacturer: AD [Analog Devices]

Preliminary Technical Data
INT AND CT OUTPUTS
The INT and CT pins are open drain outputs, and both pins
require a 10 kΩ pull-up resistor to V
UNDERTEMPERATURE AND OVERTEMPERATURE
DETECTION
The INT and CT pins have two undertemperature/overtemperature
modes: comparator mode and interrupt mode. The interrupt
mode is the default power-up overtemperature mode. The INT
output pin becomes active when the temperature is greater than
the temperature stored in the T
the temperature stored in the T
pin reacts after this event depends on the overtemperature
mode selected.
Figure 20 illustrates the comparator and interrupt modes for
events exceeding the T
Figure 21 illustrates the comparator and interrupt modes for
events exceeding the T
HIGH
LOW
limit with both pin polarity settings.
limit with both pin polarity settings.
POLARITY = ACTIVE HIGH
POLARITY = ACTIVE HIGH
POLARITY = ACTIVE LOW
POLARITY = ACTIVE LOW
HIGH
LOW
Figure 20. INT Output Temperature Response Diagram for T
(COMPARATOR MODE)
(COMPARATOR MODE)
setpoint register. How this
(INTERRUPT MODE)
(INTERRUPT MODE)
setpoint register or less than
DD
.
INT PIN
INT PIN
INT PIN
INT PIN
TEMPERATURE
82°C
81°C
80°C
79°C
78°C
77°C
76°C
75°C
74°C
73°C
Rev. PrA | Page 21 of 24
READ
Comparator Mode
In comparator mode, the INT pin returns to its inactive status
when the temperature drops below the T
rises above the T
Putting the ADT7320 into shutdown mode does not reset the
INT state in comparator mode.
Interrupt Mode
In interrupt mode, the INT pin goes inactive when any ADT7320
register is read. When the INT pin is reset, it goes active again
only when the temperature is greater than the temperature stored
in the T
in the T
Placing the ADT7320 into shutdown mode resets the INT pin
in interrupt mode.
READ
HIGH
LOW
HIGH
Overtemperature Events
setpoint register.
setpoint register or less than the temperature stored
READ
LOW
T
T
+ T
HIGH
HIGH
TIME
HYST
– T
HYST
limit.
HIGH
− T
HYST
ADT7320
limit or