lm95172q National Semiconductor Corporation, lm95172q Datasheet - Page 16

• Manufacturer Part Number: lm95172q
• Description: Digital Temperature Sensor In Die Form With ?1?c Accuracy From 130?c To 160?c
• Manufacturer: National Semiconductor Corporation

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1.7.2 Temperature Register
(Read Only): Default Register
Bit <15:1>: Temperature Data Byte. Represents the temperature that was measured by the most recent temperature conversion
in two's complement form. On power-up, this data is invalid until the DAV Bit in the Control/Status Register is high (that is, after
completion of the first conversion).
The resolution is user-programmable from 13-Bit resolution (0.0625°C) through 16-Bit resolution (0.0078125°C). The desired res-
olution is programmed through Bits 4 and 5 of the Control/Status Register. See the description of the Control/Status Register for
details on resolution selection.
The Bits not used for a selected resolution are always set to "0" and are not to be considered part of a valid temperature reading.
For example, for 14-Bit resolution, Bit <1> is not used and, therefore, it is invalid and is always zero.
Bit <0>: Conversion Toggle or, if 16-Bit resolution has been selected, this is the 16-Bit temperature LSB.
When in 13-Bit, 14-Bit, or 15-Bit resolution mode, this Bit toggles each time the Temperature register is read if a conversion has
completed since the last read. If conversion has not completed, the value will be the same as the last read.
When in 16-Bit resolution mode, this is the Least Significant Bit of the temperature data.
Reset Conditions: See Sections 1.1.1 through 1.1.3 for reset conditions.
One-Shot State: 8000h (-256°C)
1°C
D7
0.5°C
D6
0.25°C
Sign
D15
D5
128°C
0.125°C
D14
D4
64°C
D13
0.0625°C
D3
32°C
D12
0.03125°C
16
D2
16°C
D11
0.015625°C
D10
8°C
D1
4°C
D9
Conversion - Toggle/
2°C
D8
0.0078125°C
D0