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TMP112AIDRLT 数据表(PDF) 10 Page - Texas Instruments

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部件名 TMP112AIDRLT
功能描述  High-Accuracy, Low-Power, Digital Temperature Sensors With SMBus and Two-Wire Serial Interface in SOT563
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

TMP112AIDRLT 数据表(HTML) 10 Page - Texas Instruments

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ALERT
Core
SCL
GND
V+
A0
V+
SDA
TMP112
10
TMP112
SBOS473F – MARCH 2009 – REVISED FEBRUARY 2018
www.ti.com
Product Folder Links: TMP112
Submit Documentation Feedback
Copyright © 2009–2018, Texas Instruments Incorporated
Functional Block Diagrams (continued)
(1)
The resolution for the Temperature ADC in Internal Temperature mode is 0.0625°C/count.
Figure 9. Equivalent Internal ESD Circuitry
7.3 Feature Description
7.3.1 Digital Temperature Output
The digital output from each temperature measurement conversion is stored in the read-only temperature
register. The temperature register of the TMP112 family is configured as a 12-bit read-only register (setting the
EM bit to 0 in the configuration register; see the Extended Mode (EM) section), or as a 13-bit read-only register
(setting the EM bit to 1 in the configuration register) that stores the output of the most recent conversion. Two
bytes must be read to obtain data and are listed in Table 8 and Table 9. Byte 1 is the most significant byte
(MSB), followed by byte 2, the least significant byte (LSB). The first 12 bits (13 bits in extended mode) are used
to indicate temperature. The least significant byte does not have to be read if that information is not needed. The
data format for temperature is listed in Table 2 and Table 3. One LSB equals 0.0625°C. Negative numbers are
represented in binary twos complement format. Following power up or reset, the temperature register reads 0°C
until the first conversion is complete. Bit D0 of byte 2 indicates normal mode (EM bit equals 0) or extended mode
(EM bit equals 1), and can be used to distinguish between the two temperature register data formats. The
unused bits in the temperature register always read 0.
Table 2. 12-Bit Temperature Data Format(1)
TEMPERATURE (°C)
DIGITAL OUTPUT (BINARY)
HEX
128
0111 1111 1111
7FF
127.9375
0111 1111 1111
7FF
100
0110 0100 0000
640
80
0101 0000 0000
500
75
0100 1011 0000
4B0
50
0011 0010 0000
320
25
0001 1001 0000
190
0.25
0000 0000 0100
004
0
0000 0000 0000
000
–0.25
1111 1111 1100
FFC
–25
1110 0111 0000
E70
–55
1100 1001 0000
C90


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