I/O

Control

Interface

SCL

SDA

Temperature

Register

Configuration

Register

T

LOW

Register

T

HIGH

Register

Pointer

Register

TMP108

SBOS663 – APRIL 2013

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POINTER REGISTER

Figure 8 shows the internal register structure of the TMP108. Use the 8-bit pointer register to address a given

data register. The pointer register uses the two LSBs (see Table 10) to identify which of the data registers

respond to a read or write command. Table 1 identifies the bits of the pointer register byte. Table 2 describes the

pointer address of the registers available in the TMP108. The power-up reset value of the P1 and P0 bits is '00'.

Figure 8. Internal Register Structure

Table 1. Pointer Register Byte

P7

P6

P5

P4

P3

P2

P1

P0

0

0

0

0

0

0

Register Bits

Table 2. Pointer Addresses

P1

P0

REGISTER

0

0

Temperature register (read only, default)

0

1

Configuration register (read/write)

1

0

1

1

6

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