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參數資料
| 型號： | ADM1023ARQ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | ACPI-Compliant High-Accuracy Microprocessor System Temperature Monitor |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | MO-137AB, QSOP-16 |
| 文件頁數： | 8/12頁 |
| 文件大小： | 170K |
| 代理商： | ADM1023ARQ |
ADM1023
–8–
REV. A
Table IV.
Remote
Temperature Temperature
(Including
Offset)
Remote
Offset Registers
11h
Offset
Value
(Without
Offset)
12h
1111 1100 0000 0000
–
4
°
C
14
°
C
18
°
C
1111 1111 0000 0000
–
1
°
C
17
°
C
18
°
C
1111 1111 1110 0000
–
0.125
°
C 17.875
°
C
18
°
C
0000 0000 0000 0000
0
°
C
18
°
C
18
°
C
0000 0000 0010 0000
+0.125
°
C 18.125
°
C
18
°
C
0000 0001 0000 0000
+1
°
C
19
°
C
18
°
C
0000 0100 0000 0000
+4
°
C
22
°
C
18
°
C
Status Register
Bit 7 of the Status Register indicates that the ADC is busy con-
verting when it is high. Bits 6 to 3 are flags that indicate the
results of the limit comparisons.
If the local and/or remote temperature measurement is above
the corresponding high temperature limit, or below the corre-
sponding low temperature limit, one or more of these flags will be
set. Bit 2 is a flag that is set if the remote temperature sensor
is open-circuit. These
fi
ve flags are NOR
’
d together, so that if
any of them are high, the
ALERT
interrupt latch will be set and
the
ALERT
output will go low. Reading the Status Register will
clear the
fi
ve flag bits, provided the error conditions that caused
the flags to be set have gone away. While a limit comparator
is tripped due to a value register containing an out-of-limit
measurement, or the sensor is open-circuit, the corresponding
flag bit cannot be reset. A flag bit can only be reset if the corre-
sponding value register contains an in-limit measurement, or the
sensor is good.
The
ALERT
interrupt latch is not reset by reading the Status
Register, but will be reset when the
ALERT
output has been
serviced by the master reading the device address, provided the
error condition has gone away and the Status Register flag bits
have been reset.
Table V. Status Register Bit Assignments
Bit
Name
Function
7
6
5
4
3
2
1
–
0
BUSY
LHIGH
*
LLOW
*
RHIGH
*
RLOW
*
OPEN
*
1 When ADC Converting.
1 When Local High Temp Limit Tripped.
1 When Local Low Temp Limit Tripped.
1 When Remote High Temp Limit Tripped.
1 When Remote Low Temp Limit Tripped.
1 When Remote Sensor Open-Circuit.
Reserved.
*
These flags stay high until the status register is read or they are reset by POR.
Configuration Register
Two bits of the con
fi
guration register are used. If Bit 6 is 0, which
is the power-on default, the device is in operating mode with the
ADC converting. If Bit 6 is set to 1, the device is in standby mode
and the ADC does not convert. Standby mode can also be selected
by taking the
STBY
pin low. In standby mode the values of remote
and local temperature remain at the value they were before the
part was placed in standby.
Bit 7 of the con
fi
guration register is used to mask the
ALERT
output. If Bit 7 is 0, which is the power-on default, the
ALERT
output is enabled. If Bit 7 is set to 1, the
ALERT
output is
disabled.
Table III. List of ADM1023 Registers
READ Address (Hex)
WRITE Address (Hex)
Name
Power-On Default
Not Applicable
00
01
02
03
04
05
06
07
08
Not Applicable
10
11
12
13
14
19
20
FE
FF
Not Applicable
Not Applicable
Not Applicable
Not Applicable
09
0A
0B
0C
0D
0E
0F
1
Not Applicable
11
12
13
14
Not Applicable
21
Not Applicable
Not Applicable
Address Pointer
Local Temperature Value
Remote Temperature Value High Byte
Status
Con
fi
guration
Conversion Rate
Local Temperature High Limit
Local Temperature Low Limit
Remote Temperature High Limit High Byte
Remote Temperature Low Limit High Byte
One-Shot
Remote Temperature Value Low Byte
Remote Temperature Offset High Byte
Remote Temperature Offset Low Byte
Remote Temperature High Limit Low Byte
Remote Temperature Low Limit Low Byte
Reserved
Reserved
Manufacturer Device ID
Die Revision Code
Unde
fi
ned
1000 0000 (80h) (
–
128
°
C)
1000 0000 (80h) (
–
128
°
C)
Unde
fi
ned
0000 0000 (00h)
0000 0010 (02h)
0111 1111 (7Fh) (+127
°
C)
1100 1001 (C9h) (
–
55
°
C)
0111 1111 (7Fh) (+127
°
C)
1100 1001 (C9h) (
–
55
°
C)
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
Unde
fi
ned
0100 0001 (41h)
0011 xxxx (3xh)
NOTE
1
Writing to address 0F causes the ADM1023 to perform a single measurement. It is not a data register as such and it does not matter what data is written to it.
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