LM96000CIMT/NOPB National Semiconductor, LM96000CIMT/NOPB Datasheet - Page 19

• 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

Register
Address
4Eh
4Fh
50h
51h
52h
53h
4.12 Registers 4E-53h: Temperature Limit Registers
If an external temperature input or the internal temperature sensor either exceeds the value set in the corresponding high limit
register or falls below the value set in the corresponding low limit register, the corresponding bit will be set automatically by the
LM96000 in the Interrupt Status Register 1 (41h). For example, if the temperature read from the Remote1− and Remote1+ inputs
exceeds the Processor (Zone1) High Temp register limit setting, Interrupt Status Register 1 ZN1 bit will be set. The temperature
limits in these registers are represented as 8 bit, 2’s complement, signed numbers in Celsius, as shown below in Table 3.
Setting the Ready/Lock/Start/Override register Lock bit has no effect on these registers.
Read/
Write
R/W
R/W
R/W
R/W
R/W
R/W
Register
Name
Processor (Zone1)
Low Temp
Processor (Zone1)
High Temp
Processor (Zone2)
Low Temp
Processor (Zone2)
High Temp
Processor (Zone3)
Low Temp
Processor (Zone3)
High Temp
Temperature
TABLE 3. Temperature Limits vs Register Settings
−127°C
−50°C
127°C
50°C
0°C
.
.
.
.
.
.
.
.
.
.
.
.
Bit 7
(MSB)
7
7
7
7
7
7
Reading (Decimal)
Bit 6
6
6
6
6
6
6
−127
−50
127
50
0
.
.
.
.
.
.
.
.
.
.
.
.
19
Bit 5
5
5
5
5
5
5
Bit 4
4
4
4
4
4
4
Reading (Hex)
CEh
81h
00h
32h
7Fh
.
.
.
.
.
.
.
.
.
.
.
.
Bit 3
3
3
3
3
3
3
Bit 2
2
2
2
2
2
2
Bit 1
1
1
1
1
1
1
Bit 0
(LSB)
0
0
0
0
0
0
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Default
Value
81h
7Fh
81h
7Fh
81h
7Fh