LM83CIMQA/NOPB National Semiconductor, LM83CIMQA/NOPB Datasheet - Page 14

• Manufacturer Part Number: LM83CIMQA/NOPB
• Description: IC TEMP SENSOR DIGITAL 16-SSOP
• Manufacturer: National Semiconductor
• Type: Sensorsr

Specifications of LM83CIMQA/NOPB

• Function: Hardware Monitor
• Topology: ADC (Sigma Delta), Comparator, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Ic Output Type: Digital
• Sensing Accuracy Range: ± 1°C
• Temperature Sensing Range: -40°C To +125°C
• Supply Current: 800µA
• Supply Voltage Range: 3V To 3.6V
• Resolution (bits): 8bit
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM83CIMQA; *LM83CIMQA/NOPB; LM83CIMQA

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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