Datasheet

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
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
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 V
DD
interrupts
1 = Disable V
DD
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
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
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
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
Default settings at power-up.
V
DD
V
HIGH
Limit Register (Read/Write) [Address = 23h]
This limit register is an 8-bit read/write register that stores the
V
DD
upper limit that causes an interrupt and activates the
INT/
INT
output (if enabled). For this to happen, the measured
V
DD
value has to be greater than the value in this register. The
default value is 5.46 V.
Table 40. V
DD
V
HIGH
Limit
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
1
1
1
1
0
1
0
1
0
1
1
1
1
1
1
1
1
Default settings at power-up.
V
DD
V
LOW
Limit Register (Read/Write) [Address = 24h]
This limit register is an 8-bit read/write register that stores the
V
DD
lower limit that causes an interrupt and activates the INT/
INT
output (if enabled). For this to happen, the measured V
DD
value has to be less than or equal to the value in this register.
The default value is 2.7 V.
Table 41. V
DD
V
LOW
Limit
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
0
1
1
1
1
1
0
1
0
1
0
1
1
1
0
1
1
Default settings at power-up.
Internal T
HIGH
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 = Li
mit Register Code (d)
Negative Temperature =
Limit Register Code (d) − 256
Table 42. Internal T
HIGH
Limit
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
0
1
1
1
1
1
0
1
0
1
1
1
0
1
0
1
1
Default settings at power-up.