Datasheet

Data Sheet ADT7310
Rev. A | Page 11 of 24
CT and INT Operation in One-Shot Mode
See Figure 15 for more information on one-shot CT pin
operation for T
CRIT
overtemperature events when one of the
limits is exceeded. Note that in interrupt mode, a read from
any register resets the INT and CT pins.
For the INT pin in the comparator mode, if the temperature
drops below the T
HIGH
– T
HYST
value or goes above the T
LOW
+
T
HYST
value, a write to the one-shot bits (Bit 5 and Bit 6 of the
configuration register, Register Address 0x01) resets the INT pin.
For the CT pin in the comparator mode, if the temperature
drops below the T
CRIT
– T
HYST
value, a write to the one-shot
bits (Bit 5 and Bit 6 of the configuration register, Register
Address 0x01) resets the CT pin; see Figure 15.
Note that when using one-shot mode, ensure that the refresh
rate is appropriate to the application being used.
TEMPERATURE
149°C
148°C
147°C
146°C
145°C
144°C
143°C
142°C
141°C
140°C
CT PIN
POLARITY = ACTIVE LOW
CT PIN
POLARITY =
ACTIVE HIGH
T
CRIT
T
CRIT
– T
HYST
TIME
*THERE IS A 240ms DELAY BETWEEN WRITING TO THE CONFIGURATION REGISTER T
O START
A STANDARD ONE-SHOT CONVERSION AND THE CT PIN GOING ACTIVE. THIS IS DUE TO THE
CONVERSION TIME. THE DELAY IS 60ms IN THE CASE OF A ONE-SHOT CONVERSION.
WRITE TO
BIT 5 AND BIT 6 OF
CONFIGURATION
REGISTER.*
WRITE TO
BIT 5 AND BIT 6 OF
CONFIGURATION
REGISTER.*
WRITE TO
BIT 5 AND BIT 6 OF
CONFIGURATION
REGISTER.*
07789-013
Figure 15. One-Shot CT Pin