EVAL-ADT7410EBZ AD [Analog Devices], EVAL-ADT7410EBZ Datasheet - Page 10

• Manufacturer Part Number: EVAL-ADT7410EBZ
• Manufacturer: AD [Analog Devices]

ADT7410
ONE-SHOT MODE
Setting Bit 5 to 1 and Bit 6 to 0 of the configuration register
(Register Address 0x03) enables the one-shot mode. When
this mode is enabled, the ADT7410 immediately completes a
conversion and then goes into shutdown mode.
Wait for a minimum of 240 ms after writing to the one-shot
bits before reading back the temperature from the temperature
value register. This time ensures that the ADT7410 has time to
power up and complete a conversion.
The one-shot mode is useful when one of the circuit design
priorities is to reduce power consumption.
1 SPS MODE
In this mode, the part performs one measurement per second.
A conversion takes only 60 ms, and it remains in the idle state
for the remaining 940 ms period. This mode is enabled by
writing 0 to Bit 5 and 1 to Bit 6 of the configuration register
(Register Address 0x03).
POLARITY = ACTIVE HIGH
POLARITY = ACTIVE LOW
*THERE IS A 240ms DELAY BETWEEN WRITING TO THE CONFIGURATION REGISTER TO 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 1 SPS CONVERSION.
CT PIN
CT PIN
149°C
148°C
147°C
146°C
145°C
144°C
143°C
142°C
141°C
140°C
TEMPERATURE
BIT 5 AND BIT 6 OF
Figure 13. One-Shot CT Pin
CONFIGURATION
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REGISTER.*
WRITE TO
BIT 5 AND BIT 6 OF
CONFIGURATION
CT and INT Operation in One-Shot Mode
See Figure 13 for more information on one-shot CT pin
operation for T
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
T
configuration register, Register Address 0x03) resets the INT pin.
For the CT pin in the comparator mode, if the temperature
drops below the T
bits (Bit 5 and Bit 6 of the configuration register, Register
Address 0x03) resets the CT pin. See Figure 13.
Note that when using one-shot mode, ensure that the refresh
rate is appropriate to the application being used.
REGISTER.*
WRITE TO
HYST
value, a write to the one-shot bits (Bit 5 and Bit 6 of the
BIT 5 AND BIT 6 OF
CONFIGURATION
REGISTER.*
WRITE TO
CRIT
HIGH
CRIT
overtemperature events when one of the
– T
– T
T
T
CRIT
CRIT – T HYST
TIME
HYST
HYST
value, a write to the one-shot
value or goes above the T
LOW
+