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LM87 Datasheet(PDF) 30 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) 30 Page - Texas Instruments

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LM87
SNAS034J – APRIL 2000 – REVISED MARCH 2013
www.ti.com
Test Register—Address 15h
Power on default – <7:0> = 00000000 binary
Bit
Name
Read/Write
Description
0
Shutdown
Read/Write
A one places the LM87 in a lower power "Shutdown" mode.
1
Reserved
Read/Write
2
Reserved
Read/Write
3
Reserved
Read/Write
4
Reserved
Read/Write
5
Reserved
Read/Write
6
Reserved
Read/Write
7
Reserved
Read/Write
Channel Mode Register—Address 16h
Power on default – <7:0> = 00000000 binary
Bit
Name
Read/Write
Description
0
FAN1/AIN1
Read/Write
A one enables the input as AIN1, a zero enables the input as FAN1.
1
FAN2/AIN2
Read/Write
A one enables the input as AIN2, a zero enables the input as FAN2.
2
2.5V, VCCP2/D2
Read/Write
A one enables the 2.5V, VCCP2/D2 inputs as a second remote diode temperature input.
3
Int. VCC Range
Read/Write
A one configures the LM87 for 5.0V VCC measurement. A zero configures it for 3.3V VCC
measurement.
4
IRQ0 EN
Read/Write
A one enables pin 24 as an active low interrupt input. Bit 7 must also be set to configure the
VID/IRQ inputs to IRQ mode.
5
IRQ1 EN
Read/Write
A one enables pin 23 as an active low interrupt input. Bit 7 must also be set to configure the
VID/IRQ inputs to IRQ mode.
6
IRQ2 EN
Read/Write
A one enables pin 22 as an active low interrupt input. Bit 7 must also be set to configure the
VID/IRQ inputs to IRQ mode.
7
VID/IRQ
Read/Write
A one configures the VID/IRQ inputs as Interrupt Inputs. A zero configures the VID/IRQ inputs as
VID inputs only.
30
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