TMP451
SBOS686 –JUNE 2013
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REGISTER INFORMATION
The TMP451 contains multiple registers for holding configuration information, temperature measurement results,
and status information. These registers are described in Figure 12 and Table 3.
Pointer Register
Figure 12 shows the internal register structure of the TMP451. 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
register and the internal structure of the TMP451 registers. The power-on reset (POR) value of the pointer
register is 00h (0000 0000b).
Pointer Register
Local and Remote Temperature Registers
Status Register
Configuration Register
Conversion Rate Register
SDA
Local and Remote Temperature Limit Registers
One-Shot Start Register
I/O
Remote Temperature Offset Registers
Local and Remote THERM Limit Registers
THERM Hysteresis Register
Control
Interface
Consecutive ALERT Register
N-factor Correction Register
SCL
Digital Filter Register
Manufacturer ID Register
Figure 12. Internal Register Structure
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