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ADT7411 Datasheet(PDF) 25 Page - Analog Devices

Part No. ADT7411
Description  SPI-/IC-Compatible, 10-Bit Digital Temperature Sensor and 8-Channel ADC
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADT7411 Datasheet(HTML) 25 Page - Analog Devices

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ADT7411
Rev. B | Page 25 of 36
Interrupt Mask 2 Register (Read/Write) [Address = 1Eh]
This mask register is an 8-bit read/write register that can be
used to mask out any interrupts that can cause the INT/INT pin
to go active.
Table 36. Interrupt Mask 2
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
01
01
01
01
01
01
01
01
1 Default settings at power-up.
Table 37.
Bit
Function
D0
0 = Enable AIN5 interrupt
1 = Disable AIN5 interrupt
D1
0 = Enable AIN6 interrupt
1 = Disable AIN6 interrupt
D2
0 = Enable AIN7 interrupt
1 = Disable AIN7 interrupt
D3
0 = Enable AIN8 interrupt
1 = Disable AIN8 interrupt
D4
0 = Enable VDD interrupts
1 = Disable VDD interrupts
D5:D7
Reserved. Only write 0s
Internal Temperature Offset Register (Read/Write)
[Address = 1Fh]
This register contains the offset value for the internal
temperature channel. A twos complement number can be
written to this register, which is then added to the measured
result before it is stored or compared to limits. In this way, a
sort of one-point calibration can be done whereby the whole
transfer function of the channel can be moved up or down.
From a software point of view, this may be a very simple
method to vary the characteristics of the measurement channel
if the thermal characteristics change. Because it is an 8-bit
register, the temperature resolution is 1°C.
Table 38. Internal Temperature Offset
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
01
01
01
01
01
01
01
01
1 Default settings at power-up.
External Temperature Offset Register (Read/Write)
[Address = 20h]
This register contains the offset value for the external
temperature channel. A twos complement number can be
written to this register, which is then added to the measured
result before it is stored or compared to limits. In this way, a
sort of one-point calibration can be done whereby the whole
transfer function of the channel can be moved up or down.
From a software point of view, this may be a very simple
method to vary the characteristics of the measurement channel
if the thermal characteristics change. Because it is an 8-bit
register, the temperature resolution is 1°C.
Table 39. External Temperature Offset
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
01
01
01
01
01
01
01
01
1 Default settings at power-up.
VDD VHIGH Limit Register (Read/Write) [Address = 23h]
This limit register is an 8-bit read/write register that stores the
VDD upper limit that causes an interrupt and activates the
INT/INT output (if enabled). For this to happen, the measured
VDD value has to be greater than the value in this register. The
default value is 5.46 V.
Table 40. VDD VHIGH Limit
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
11
11
01
01
01
11
11
11
1 Default settings at power-up.
VDD VLOW Limit Register (Read/Write) [Address = 24h]
This limit register is an 8-bit read/write register that stores the
VDD lower limit that causes an interrupt and activates the INT/
INT output (if enabled). For this to happen, the measured VDD
value has to be less than or equal to the value in this register.
The default value is 2.7 V.
Table 41. VDD VLOW Limit
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
01
11
11
01
01
01
11
01
1 Default settings at power-up.
Internal THIGH Limit Register (Read/Write) [Address = 25h]
This limit register is an 8-bit read/write register that stores the
twos complement of the internal temperature upper limit that
causes an interrupt and activates the INT/INT output (if enabled).
For this to happen, the measured internal temperature value has
to be greater than the value in this register. Because it is an 8-bit
register, the temperature resolution is 1°C. The default value
is 100°C.
Positive Temperature = Limit Register Code (d)
Negative Temperature = Limit Register Code (d) − 256
Table 42. Internal THIGH Limit
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
01
11
11
01
01
11
01
01
1 Default settings at power-up.


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