LM83CIMQA National Semiconductor, LM83CIMQA Datasheet - Page 14

• Manufacturer Part Number: LM83CIMQA
• Description: Temperature Sensor IC
• Manufacturer: National Semiconductor

Specifications of LM83CIMQA

• Peak Reflow Compatible (260 C): No
• Ic Function: Temperature Sensor IC
• Supply Voltage Max: 3.6V
• Leaded Process Compatible: No
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C To +125°C
• Temperature Sensor Function: Temp Sensor
• Interface Type: Serial (2-Wire)
• Output Type: Digital
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Operating Temperature Classification: Automotive
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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1.0 Functional Description
2.2 LOCAL and D1, D2 and D3 REMOTE TEMPERATURE REGISTERS (LT, D1RT, D2RT, and D3RT)
D7–D0: Temperature Data. One LSB = 1˚C. Two’s complement format.
2.3 STATUS REGISTERS 1 and 2
Power up default is with all bits “0” (zero).
D0: LCRIT: When set to a 1 indicates an Local Critical Temperature alarm.
D1: D2CRIT: When set to a 1 indicates a Remote Diode 2 Critical Temperature alarm.
D2: D2OPEN: When set to 1 indicates a Remote Diode 2 disconnect.
D4: D2RHIGH: When set to 1 indicates a Remote Diode 2 HIGH Temperature alarm.
D6: LHIGH: When set to 1 indicates a Local HIGH Temperature alarm.
D7, D5, and D3: These bits are always set to 0 and reserved for future use.
Status Register 2
Power up default is with all bits “0” (zero).
D0: D1CRIT, when set to 1 indicates a Remote Diode 1 Critical Temperature alarm.
D1: D3CRIT, when set to 1 indicates a Remote Diode 3 Critical Temperature alarm.
D2: D3OPEN, when set to 1 indicates a Remote Diode 3 disconnect.
D4: D3RHIGH, when set to 1 indicates a Remote Diode 3 HIGH Temperature alarm.
D5: D1OPEN, when set to 1 indicates a Remote Diode 1 disconnect.
D7: D1RHIGH, when set to 1 indicates a Remote Diode 1
HIGH Temperature alarm.
D6, and D3: These bits are always set to 0 and reserved for future use.
2.4 MANUFACTURERS ID REGISTER
(Read Address FEh) Default value 01h.
2.5 CONFIGURATION REGISTER
Power up default is with all bits “0” (zero).
D7: INT mask: When set to 1 INT interrupts are masked.
(Read Only Address 00h, 01h, 30h and 31h):
2.3.1 Status Register 1 (SR1) (Read Only Address 02h):
2.3.2 Status Register 2 (SR2) (Read Only Address 35h):
D1RHIGH
(Read Address 03h/Write Address 09h):
MSB
Command Se-
D7
<
INT mask
lect Address
5Ch-6Fh and
P7:P0
D7
D7
F0h-FDh
0
D7
FEh
FFh
Bit 6
D6
>
hex
LHIGH
Bit 5
D6
D6
D5
0
<
D6
D7:D0
0
0000 0001
Bit 4
D4
D1OPEN
Power On Default State
>
D5
D5
0
binary
Bit 3
T_CRIT_A
D3
mask
D5
D1
D2RHIGH
D3RHIGH
Bit 2
<
D2
D4
D4
D7:D0
(Continued)
mal
1
Bit 1
T_CRIT_A
>
D1
deci-
mask
D4
D2
D3
D3
0
0
LSB
D0
14
Register Name
D2OPEN
D3OPEN
T_CRIT_A
RMID
RSR
D2
D2
mask
D3
D3
D2CRIT
D3CRIT
D1
D1
Reserved for Future Use
Read Manufacturers ID
Read Stepping or Die
Revision Code
T_CRIT_A
Local
mask
D2
Register Function
D1CRIT
LCRIT
D0
D0
INT Inversion
D1
D0
0