LM96000CIMT/NOPB National Semiconductor, LM96000CIMT/NOPB Datasheet - Page 27

• Manufacturer Part Number: LM96000CIMT/NOPB
• Description: IC HDWR MON W/FAN CTRL 24-TSSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM96000CIMT/NOPB

• Function: Fan Control, Temp Monitor
• Topology: ADC (Sigma Delta), Comparator, Fan Control, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: 0°C ~ 85°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Ic Output Type: Digital
• Sensing Accuracy Range: ± 2.5°C
• Temperature Sensing Range: 0°C To +85°C
• Supply Current: 530µA
• Supply Voltage Range: 3V To 3.6V
• Resolution (bits): 8bit
• Sensor Case Style: TSSOP
• No. Of Pins: 24
• Rohs Compliant: Yes
• Accuracy %: 3°C
• For Use With: LM96000EVAL - BOARD EVALUATION LM96000
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM96000CIMT; *LM96000CIMT/NOPB; LM96000CIMT

6Ah
6Bh
6Ch
Register
Address
4.19 Registers 6A-6Ch: Absolute Temperature Limit
In the Auto Fan mode, if a zone exceeds the temperature set in the Absolute Temperature Limit register, all of the PWM outputs
will incresase its duty cycle to 100%. This is a safety feature that attempts to cool the system if there is a potentially catastrophic
thermal event. If set to 80h (-128°C), the feature is disabled. Default=100°C=64h
These registers become Read Only when the Ready/Lock/Start/Override register Lock bit is set. Any further attempts to write to
these registers shall have no effect. After power up the default values are used whenever the Ready/Lock/Start/Override register
Start bit is cleared even though modifications to these registers are possible.
R/W
R/W
R/W
Read/
Write
Zone1 Absolute Temp Limit
Zone2 Absolute Temp Limit
Zone3 Absolute Temp Limit
Register
Name
Temperature
Temperature
TABLE 10. Temperature Limit vs Register Setting
−127°C
−127°C
−50°C
127°C
TABLE 11. Absolute Limit vs Register Setting
−50°C
127°C
50°C
50°C
0°C
0°C
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(MSB)
Reading (Decimal)
Reading (Decimal)
Bit 7
7
7
7
−127
−127
−50
127
−50
127
Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
50
50
0
0
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27
6
6
6
5
5
5
Reading (Hex)
Reading (Hex)
4
4
4
CEh
CEh
81h
00h
32h
7Fh
81h
00h
32h
7Fh
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3
3
3
2
2
2
1
1
1
(LSB)
Bit 0
0
0
0
Default
Value
64h
64h
64h
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Lock?
✓
✓
✓