LM75CIMM-3 National Semiconductor, LM75CIMM-3 Datasheet - Page 10

• Manufacturer Part Number: LM75CIMM-3
• Description: Temperature Sensor IC
• Manufacturer: National Semiconductor

Specifications of LM75CIMM-3

• Peak Reflow Compatible (260 C): No
• Ic Function: Temperature Sensor IC
• Supply Voltage Max: 5.5V
• Leaded Process Compatible: No
• Mounting Type: Surface Mount
• Supply Voltage Min: 3V
• Operating Temperature Min: -55°C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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1.0 Functional Description
1.11 POINTER REGISTER
(Selects which registers will be read from or written to):
P0-P1: Register Select:
P2–P7: Must be kept zero.
1.12 TEMPERATURE REGISTER
D0–D6: Undefined
D7–D15: Temperature Data. One LSB = 0.5˚C. Two’s complement format.
1.13 CONFIGURATION REGISTER
Power up default is with all bits “0” (zero).
D0: Shutdown: When set to 1 the LM75 goes to low power shutdown mode.
D1: Comparator/Interrupt mode: 0 is Comparator mode, 1 is Interrupt mode.
D2: O.S. Polarity: 0 is active low, 1 is active high. O.S. is an open-drain output under all conditions.
D3–D4: Fault Queue: Number of faults necessary to detect before setting O.S. output to avoid false tripping due to noise. Faults
are determind at the end of a conversion. Conversions take about 100 ms, typically, to complete.
D5–D7: These bits are used for production testing and must be kept zero for normal operation.
1.14 T
D0–D6: Undefined
D7–D15: T
(Read Only):
(Read/Write):
MSB
MSB
D15
(Read/Write):
D15
HYST
D7
0
Bit 7
Bit 7
D14
D14
HYST
AND T
Or T
Bit 6
Bit 6
D13
D13
OS
OS
REGISTER
D6
0
Trip Temperature Data. Power up default is T
Bit 5
Bit 5
D12
D12
Bit 4
Bit 4
D11
D11
P1
P7
0
0
1
1
0
D5
0
P0
Bit 3
Bit 3
D10
D10
0
1
0
1
P6
0
(Continued)
D4
0
0
1
1
Temperature (Read only) (Power-up default)
Configuration (Read/Write)
T
T
HYST
OS
Bit 2
Bit 2
P5
D9
D9
0
(Read/Write)
D3
D4
0
1
0
1
(Read/Write)
Fault Queue
Bit 1
Bit 1
P4
D8
D8
0
1 (Power-up default)
2
4
6
Number of Faults
10
P3
Register
LSB
LSB
0
D7
D7
D3
OS
= 80˚C, T
P2
0
D6
D6
X
X
P1
Register
D5
D5
HYST
Polarity
X
X
Select
O.S.
D2
= 75˚C.
P0
D4
D4
X
X
D3
D3
Cmp/Int
X
X
D1
D2
D2
X
X
Shutdown
D1
D1
X
X
D0
D0
D0
X
X