LM95172QA2MDA NSC [National Semiconductor], LM95172QA2MDA Datasheet - Page 14

• Manufacturer Part Number: LM95172QA2MDA
• Manufacturer: NSC [National Semiconductor]

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The first data byte is the most significant byte with most sig-
nificant bit first, permitting only as much data as necessary to
be read to determine temperature condition. For instance, if
the first four bits of the temperature data indicate an overtem-
perature condition, the host processor could immediately take
action to remedy the excessive temperatures.
1.6 SHUTDOWN MODE
Shutdown Mode is enabled by writing a “1” to the Shutdown
Bit, Bit 15 of the Control/Status Register, and holding it high
for at least the specified maximum conversion time at the ex-
Temperature
+0.015625°C
−0.015625°C
16-Bit Resolution. First bit (D15) is Sign and the last bit (D0) is the LSB.
15-Bit Resolution. First bit (D15) is Sign and the last bit (D0) is Toggle.
+0.0078125°C
−0.0078125°C
Temperature
+175°C
+150°C
+80°C
+25°C
−40°C
0°C
+175°C
+150°C
+80°C
+25°C
−40°C
0°C
010101111000000 0
010101111000000 1
010010110000000 0
010010110000000 1
001010000000000 0
001010000000000 1
000011001000000 0
000011001000000 1
000000000000001 0
000000000000001 1
000000000000000 0
000000000000000 1
111111111111111 0
111111111111111 1
111011000000000 0
111011000000000 1
16-bit Binary
0101 0111 1000 0000
0100 1011 0000 0000
0010 1000 0000 0000
0000 1100 1000 0000
0000 0000 0000 0001
0000 0000 0000 0000
1111 1111 1111 1111
1110 1100 0000 0000
16-bit Binary
15-bit Resolution Digital Output
16-bit Resolution Digital Output
14
isting temperature resolution setting. (see Temperature Con-
version Time specifications under the Temperature-to-Digital
Characteristics section). For example, if the LM95172Q is set
for 16-bit resolution before shutdown, then Bit 15 of the Con-
trol/Status register must go high and stay high for the speci-
fied maximum conversion time for 16-bits resolution.
The LM95172Q will always finish a temperature conversion
and update the temperature registers before shutting down.
Writing a “0” to the Shutdown Bit restores the LM95172Q to
normal mode.
All 16 Bits
FFFE
FFFF
EC00
EC01
4B00
4B01
0C80
0C81
5780
5781
2800
2801
0002
0003
0000
0001
Hex
All 16 Bits
Bits D15 - D1
FFFF
EC00
4B00
0C80
5780
2800
0001
0000
Hex
2BC0
7FFF
2580
1400
0640
0001
0000
7600
Hex