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SBOS383A − FEBRUARY 2007
Table 2. Decimal Fraction Temperature Data Format (Local and Remote Temperature Low Bytes)
REMOTE TEMPERATURE
REGISTER LOW BYTE
VALUE
LOCAL TEMPERATURE REGISTER LOW BYTE VALUE
0.0625°C RESOLUTION
0.5°C RESOLUTION
0.25°C RESOLUTION
0.125°C RESOLUTION
0.0625°C RESOLUTION
STANDARD
STANDARD
STANDARD
STANDARD
STANDARD
AND EXTENDED
AND EXTENDED
AND EXTENDED
AND EXTENDED
AND EXTENDED
TEMP
BINARY
BINARY
BINARY
BINARY
BINARY
HEX
00
10
20
30
40
50
60
70
80
90
A0
B0
C0
D0
E0
F0
HEX
00
00
00
00
00
00
00
00
80
80
80
80
80
80
80
80
HEX
00
00
00
00
40
40
40
40
80
80
80
80
C0
C0
C0
C0
HEX
00
00
20
20
40
40
60
60
80
80
A0
A0
C0
C0
E0
E0
HEX
00
10
20
30
40
50
60
70
80
90
A0
B0
C0
D0
E0
F0
(°C)
0.0000
0.0625
0.1250
0.1875
0.2500
0.3125
0.3750
0.4375
0.5000
0.5625
0.6250
0.6875
0.7500
0.8125
0.8750
0.9385
0000 0000
0001 0000
0010 0000
0011 0000
0100 0000
0101 0000
0110 0000
0111 0000
1000 0000
1001 0000
1010 0000
1011 0000
1100 0000
1101 0000
1110 0000
1111 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
1000 0000
1000 0000
1000 0000
1000 0000
1000 0000
1000 0000
1000 0000
1000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0100 0000
0100 0000
0100 0000
0100 0000
1000 0000
1000 0000
1000 0000
1000 0000
1100 0000
1100 0000
1100 0000
1100 0000
0000 0000
0000 0000
0010 0000
0010 0000
0100 0000
0100 0000
0110 0000
0110 0000
1000 0000
1000 0000
1010 0000
1010 0000
1100 0000
1100 0000
1110 0000
1110 0000
0000 0000
0001 0000
0010 0000
0011 0000
0100 0000
0101 0000
0110 0000
0111 0000
1000 0000
1001 0000
1010 0000
1011 0000
1100 0000
1101 0000
1110 0000
1111 0000
REGISTER INFORMATION
Pointer Register
The TMP411 contains multiple registers for holding
configuration information, temperature measurement
results, temperature comparator maximum/minimum,
limits, and status information. These registers are
described in Figure 12 and Table 3.
Local and Remote Temperature Registers
Local and Remote Limit Registers
THERM Hysteresis Register
Status Register
SDA
SCL
POINTER REGISTER
I/O
Control
Interface
Configuration Register
Figure 12 shows the internal register structure of the
TMP411. The 8-bit Pointer Register is used to address a
given data register. The Pointer Register identifies which
of the data registers should respond to a read or write
command on the Two-Wire bus. This register is set with
every write command. A write command must be issued
to set the proper value in the Pointer Register before
executing a read command. Table 3 describes the pointer
address of the registers available in the TMP411. The
power-on reset (POR) value of the Pointer Register is 00h
(0000 0000b).
Resolution Register
Conversion Rate Register
Consecutive Alert Register
Identification Registers
Local Temperature Min/Max
Remote Temperature Min/Max
Figure 12. Internal Register Structure
8
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