I/O

Control

Interface

SCL

SDA

Temperature

Register

Configuration

Register

T

LOW

Register

T

HIGH

Register

Pointer

Register

One-Shot

Register

TMP75C

SBOS707B – APRIL 2014 – REVISED AUGUST 2014

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7.5 Programming

Figure 12 shows the internal register structure of the TMP75C. Use the 8-bit pointer register to address a given

data register. The pointer register uses the three LSBs to identify which of the data registers respond to a read or

write command. Figure 13 identifies the bits of the pointer register byte.

Figure 12. Internal Register Structure

7.6 Register Map

Table 4 describes the registers available in the TMP75C with their pointer addresses, followed by the description

of the bits in each register.

Table 4. Register Map and Pointer Addresses

P2

P1

P0

REGISTER

0

0

0

Temperature register (read only, default)

0

0

1

Configuration register (read/write)

0

1

0

0

1

1

1

0

0

One-Shot register (write only; write any value to start a

conversion)

Figure 13. Pointer Register (pointer = N/A) [reset = 00h]

7

6

5

4

3

2

1

0

Reserved

P2

P1

P0

W-0h

W-0h

W-0h

W-0h

LEGEND: R/W = Read/Write; R = Read only; W = Write only; -n = value after reset

16

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