LM87CIMT/NOPB National Semiconductor, LM87CIMT/NOPB Datasheet - Page 25

• Manufacturer Part Number: LM87CIMT/NOPB
• Description: IC INTERFACE SER MONITOR 24TSSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM87CIMT/NOPB

• Function: Hardware Monitor
• Topology: ADC (Sigma Delta), Comparator, Fan Speed Control, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: I²C™/SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 2.8 V ~ 3.8 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM87CIMT; *LM87CIMT/NOPB; LM87CIMT

Bit
Bit
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
13.3 Test Register—Address 15h
Power on default – <7:0> = 00000000 binary
13.4 Channel Mode Register—Address 16h
Power on default – <7:0> = 00000000 binary
Shutdown
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
FAN1/AIN1
FAN2/AIN2
2.5V, V
Int. V
IRQ0 EN
IRQ1 EN
IRQ2 EN
VID/IRQ
CC
Name
Name
CCP2
Range
/D2
Read/Write A one places the LM87 in a lower power "Shutdown" mode.
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write A one enables the input as AIN1, a zero enables the input as FAN1.
Read/Write A one enables the input as AIN2, a zero enables the input as FAN2.
Read/Write A one enables the 2.5V, V
Read/Write A one configures the LM87 for 5.0V V
Read/Write A one enables pin 24 as an active low interrupt input. Bit 7 must also be set to configure the VID/
Read/Write A one enables pin 23 as an active low interrupt input. Bit 7 must also be set to configure the VID/
Read/Write A one enables pin 22 as an active low interrupt input. Bit 7 must also be set to configure the VID/
Read/Write A one configures the VID/IRQ inputs as Interrupt Inputs. A zero configures the VID/IRQ inputs as
Read/Write
Read/Write
measurement.
IRQ inputs to IRQ mode.
IRQ inputs to IRQ mode.
IRQ inputs to IRQ mode.
VID inputs only.
CCP2
25
/D2 inputs as a second remote diode temperature input.
CC
measurement. A zero configures it for 3.3V V
Description
Description
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CC