LM95245CIM/NOPB National Semiconductor, LM95245CIM/NOPB Datasheet - Page 17

• Manufacturer Part Number: LM95245CIM/NOPB
• Description: IC TEMP SENSE DIGITAL W/TT 8SOIC
• Manufacturer: National Semiconductor
• Series: TruTherm®r

Specifications of LM95245CIM/NOPB

• Function: Hardware Monitor
• Topology: ADC (Sigma Delta), Comparator, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 85°C, External Sensor
• Output Type: SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• For Use With: LM95245EB - BOARD EVALUATION FOR LM95245
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM95245CIM

(Read Only Address 31h)
13-bit unsigned format:
Temperature Data: LSb = 1°C.
(Read Only Address 32h)
13-bit unsigned binary formats with filter on:
(Read Only Address 32h)
13-bit unsigned binary formats with filter off:
Temperature Data: LSb = 0.125°C filter off or 0.03125°C filter on.
For data synchronization purposes, the MSB register should be read first if the user wants to read both MSB and LSB registers.
The LSB will be locked after the MSB is read. The LSB will be unlocked after being read. If the user reads MSBs consecutively,
each time the MSB is read, the LSB associated with that temperature will be locked in and override the previous LSB value locked-
in.
2.2 DIODE CONFIGURATION REGISTERS
(Read/write Address BFh):
Power up default is 1Fh.
D7
0
Bits
2-1
7
6
5
4
3
0
OS/A0 Function Select
Name
Reserved
OS/A0 Function Select
Diode Fault Mask for OS
Diode Fault Mask for T_CRIT
Remote Diode TruTherm
Mode Select
Remote Filter Enable
Reserved
D6
BIT
Value
BIT
Value
Value
BIT
Unsigned Remote Temperature LSB, Filter Off
Unsigned Remote Temperature LSB, Filter On
128
D7
D7
0.5
0.5
D7
OS Fault Mask
Unsigned Remote Temperature MSB
0.25
0.25
D6
D6
64
D6
D5
Configuration Register 2
Description
Reports "0" when read.
0: Address (A0) function is enabled
1: Over-temperature Shutdown (OS) is enabled
0: Off
1: On
0: Off
1: On
0: Selects Diode Model 2, MMBT3904, with TruTherm technology
disabled. Note, performance in this mode is not guaranteed.
1: Selects Diode Model 1, A typical Intel Processor, with 45nm, 65 nm
or 90 nm technology, and TruTherm technology enabled.
00: Filter Disable
01: Reserved
10: Reserved
11: Filter Enable
Reports "1" when read.
0.125
0.125
D5
D5
32
D5
17
0.0625
T_CRIT
D4
D4
16
Mask
0
D4
D4
D3
D3
8
0
0.03125
D3
TruTherm Select
D2
D2
4
0
D3
D2
0
D1
D1
2
0
D1
0
D0
D0
D0
1
0
RFE1
0
D2
RFE0
D1
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D0
1