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LM95221 Datasheet(PDF) 13 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM95221
Description  Dual Remote Diode Digital Temperature Sensor with SMBus Interface
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM95221 Datasheet(HTML) 13 Page - National Semiconductor (TI)

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2.0 LM95221 Registers (Continued)
2.3 LOCAL and REMOTE MSB and LSB TEMPERATURE REGISTERS
Local Temperature MSB
(Read Only Address 10h) 9-bit plus sign format:
BIT
D7
D6
D5
D4
D3
D2
D1
D0
Value
SIGN
64
32
16
8
4
2
1
Temperature Data: LSb = 1˚C.
Local Temperature LSB
(Read Only Address 20h) 9-bit plus sign format:
BIT
D7
D6
D5
D4
D3
D2
D1
D0
Value
0.5
0.25
00000
0
Temperature Data: LSb = 0.25˚C.
Remote Temperature MSB
(Read Only Address 11h, 12h) 10 bit plus sign format:
BIT
D7
D6
D5
D4
D3
D2
D1
D0
Value
SIGN
64
32
16
8
4
2
1
Temperature Data: LSb = 1˚C.
(Read Only Address 11h, 12h) 11-bit unsigned format:
BIT
D7
D6
D5
D4
D3
D2
D1
D0
Value
128
64
32
16
8
4
2
1
Temperature Data: LSb = 1˚C.
Remote Temperature LSB
(Read Only Address 21, 22h) 10-bit plus sign or 11-bit unsigned binary
formats:
BIT
D7
D6
D5
D4
D3
D2
D1
D0
Value
0.5
0.25
0.125
0000
0
Temperature Data: LSb = 0.125˚C.
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.
2.4 MANUFACTURERS ID REGISTER
(Read Address FEh) The default value is 01h.
2.5 DIE REVISION CODE REGISTER
(Read Address FFh) Value to be determined. This register will increment by 1 every time there is a revision to the die by National
Semiconductor.
www.national.com
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