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參數(shù)資料
| 型號： | ADT7411 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 圓形連接器 |
| 英文描述： | SPI/I2C compatible，10-bit digital temperature sensor and 8-channel ADC |
| 中文描述： | SPI/I2C兼容，10位數(shù)字溫度傳感器和8通道ADC |
| 文件頁數(shù)： | 25/36頁 |
| 文件大?。?/td> | 456K |
| 代理商： | ADT7411 |
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ADT7411
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
will cause an interrupt and activate 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.
Table 42. Internal T
HIGH
Limit
D7
D6
D5
D4
D7
D6
D5
D4
0*
1*
1*
0*
*Default settings at power-up.
Internal T
LOW
Limit Register (Read/Write) [Address = 26h]
This limit register is an 8-bit read/write register that stores the
twos complement of the internal temperature lower limit that
will cause an interrupt and activate the INT/INT output (if
enabled). For this to happen, the measured internal temperature
value has to be more negative than or equal to the value in this
register. Because it is an 8-bit register, the temperature resolu-
tion is 1°C. The default value is 55°C.
Table 43. Internal T
LOW
Limit
D7
D6
D5
D4
D7
D6
D5
D4
1*
1*
0*
0*
*Default settings at power-up.
External T
HIGH
/AIN1 V
HIGH
Limit Register (Read/Write)
[Address = 27h]
If Pins 7 and 8 are configured for the external temperature
sensor, this limit register is an 8-bit read/write register that
stores the twos complement of the external temperature upper
limit that will cause an interrupt and activate the INT/INT
output (if enabled). For this to happen, the measured external
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 1°C.
Rev. A | Page 25 of 36
D3
D3
0*
D2
D2
1*
D1
D1
0*
D0
D0
0*
D3
D3
1*
D2
D2
0*
D1
D1
0*
D0
D0
1*
If Pins 7 and 8 are configured for AIN1 and AIN2 single-ended
inputs, this limit register is an 8-bit read/write register that
stores the AIN1 input upper limit that will cause an interrupt
and activate the INT/INT output (if enabled). For this to hap-
pen, the measured AIN1 value has to be greater than the value
in this register. Because it is an 8-bit register, the resolution is
four times less than the resolution of the 10-bit ADC. Since the
power-up default settings for Pins 7 and 8 are AIN1 and AIN2
single-ended inputs, the default value for this limit register is
full-scale voltage.
Table 44. AIN1 V
HIGH
Limit
D7
D6
D5
D4
D7
D6
D5
D4
1*
1*
1*
1*
*Default settings at power-up.
D3
D3
1*
D2
D2
1*
D1
D1
1*
D0
D0
1*
External T
LOW
/AIN1 V
LOW
Limit Register (Read/Write)
[Address = 28h]
If Pins 7 and 8 are configured for the external temperature
sensor, this limit register is an 8-bit read/write register that
stores the twos complement of the external temperature lower
limit that will cause an interrupt and activate the INT/INT
output (if enabled). For this to happen, the measured external
temperature value has to be more negative than or equal to the
value in this register. Since it is an 8-bit register, the temperature
resolution is 1°C. The default value is 0°C.
If Pins 7 and 8 are configured for AIN1 and AIN2 single-ended
inputs, this limit register is an 8-bit read/write register that
stores the AIN1 input lower limit that will cause an interrupt
and activate the INT/INT output (if enabled). For this to hap-
pen, the measured AIN1 value has to be less than or equal to the
value in this register. Because it is an 8-bit register the resolution
is four times less than the resolution of the 10-Bit ADC. Since
the power-up default settings for Pins 7 and 8 are AIN1 and
AIN2 single-ended inputs, the default value for this limit
register is 0 V.
Table 45. AIN1 V
LOW
Limit
D7
D6
D5
D4
D7
D6
D5
D4
0*
0*
0*
0*
*Default settings at power-up.
AIN2 V
HIGH
Limit Register (Read/Write) [Address = 2Bh]
This limit register is an 8-bit read/write register that stores the
AIN2 input upper limit that will cause an interrupt and activate
the INT/INT output (if enabled). For this to happen, the mea-
sured AIN2 value has to be greater than the value in this reg-
ister. Because it is an 8-bit register, the resolution is four times
less than the resolution of the 10-bit ADC. The default value is
full-scale voltage.
Table 46. AIN2 V
HIGH
Limit
D7
D6
D5
D4
D7
D6
D5
D4
1*
1*
1*
1*
*Default settings at power-up.
AIN2 V
LOW
Limit Register (Read/Write) [Address = 2Ch]
This limit register is an 8-bit read/write register that stores the
AIN2 input lower limit that will cause an interrupt and activate
the INT/INT output (if enabled). For this to happen, the mea-
sured AIN2 value has to be less than or equal to the value in this
register. Because it is an 8-bit register, the resolution is four
times less than the resolution of the 10-bit ADC. The default
value is 0 V.
Table 47. AIN2 V
LOW
Limit
D7
D6
D5
D4
D7
D6
D5
D4
0*
0*
0*
0*
*Default settings at power-up.
D3
D3
0*
D2
D2
0*
D1
D1
0*
D0
D0
0*
D3
D3
1*
D2
D2
1*
D1
D1
1*
D0
D0
1*
D3
D3
0*
D2
D2
0*
D1
D1
0*
D0
D0
0*
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