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LM87 Datasheet(PDF) 34 Page - Texas Instruments

Part # LM87
Description  LM87 Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing
PDF  45 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM87 Datasheet(HTML) 34 Page - Texas Instruments

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LM87
SNAS034J – APRIL 2000 – REVISED MARCH 2013
www.ti.com
Interrupt Status Register 1 Mirror—Address 4Ch
Power on default – <7:0> = 0000 0000 binary
Bit
Name
Read Only
Description
0
+2.5Vin
Read Only
A one indicates a High or Low limit has been exceeded.
1
Vccp1
Read Only
A one indicates a High or Low limit has been exceeded.
2
Vcc
Read Only
A one indicates a High or Low limit has been exceeded.
3
+5Vin
Read Only
A one indicates a High or Low limit has been exceeded.
4
Int. Temp.
Read Only
A one indicates a High or Low limit has been exceeded.
5
Ext. Temp.
Read Only
A one indicates a High or Low limit has been exceeded.
6
FAN1/AIN1
Read Only
A one indicates the fan count limit has been exceeded or an AIN1 High or Low limit has been
exceeded.
7
FAN2/AIN2
Read Only
A one indicates the fan count limit has been exceeded or an AIN2 High or Low limit has been
exceeded.
nterrupt Status Register 2 Mirror—Address 4Dh
Power on default – <7:0> = 0000 0000 binary
Bit
Name
Read Only
Description
0
+12Vin
Read Only
A one indicates a High or Low limit has been exceeded.
1
Vccp2
Read Only
A one indicates a High or Low limit has been exceeded.
2
Reserved
Read Only
3
Reserved
Read Only
4
CI
Read Only
A one indicates the CI (Chassis Intrusion) input has gone high.
5
THERM#
Read Only
A one indicates the THERM# input has been pulled low by external circuitry.
6
D1 Fault
Read Only
A one indicates the D1 inputs are shorted to Vcc or open circuit.
7
D2 Fault
Read Only
A one indicates the D2 inputs are shorted to Vcc or open circuit.
SMBALERT# Enable—Address 80h
Power on default – <7:0> = 0010 0000 binary
Bit
Name
Read/Write
Description
0
Reserved
Read Only
1
Reserved
Read Only
2
Reserved
Read Only
3
Reserved
Read Only
4
Reserved
Read Only
5
Reserved
Read Only
6
SMBALERT#
Read/Write
A one enables the SMBALERT# mode of operation.
Enable
7
Reserved
Read Only
34
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Product Folder Links: LM87



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