Temperature Reg Read

(16 bits)

Command Byte

Write (8 bits)

Data Register

Read or Write (16 bits)

CS

SI/O

D16

D0

D0

D16

P7

P0

Command Byte

Write (8 bits)

Data Register

Read or Write (16 bits)

D0

D16

P0

P7

SC

1

8

1

16

1

8

1

16

16

1

Temperature Reg Read

(16 bits)

Command Byte

Write (8 bits)

Data Register

Read or Write (16 bits)

CS

SI/O

D16

D0

D0

D16

P7

P0

SC

1

16

1

16

1

8

LM95172

www.ti.com

SNOSB33B – DECEMBER 2009 – REVISED MARCH 2013

Figure 12. Reading the Temperature Register followed by a read or write from another register

Figure 13. Reading the Temperature Register followed by repeated commands and Data Register

TEMPERATURE DATA FORMAT

Temperature data is represented by a 13- to 16-bit, two's complement word with a Least Significant Bit (LSB)

equal to 0.0625 °C (13-bits), 0.03125 °C (14-bits), 0.015625 °C (15-bits) or 0.0078125 °C (16-bits). See

Temperature Register for definition of the bits in the Temperature Register.

Table 1. 13-Bit Resolution. First Bit (D15) is Sign, the last bit (D0) is Toggle and bits D1 and D2 are

always 0.

13-bit Resolution Digital Output

Temperature

All 16 Bits

Bits D15 - D3

16-bit Binary

Hex

Hex

0101011110000 000

5780

+175°C

0AF0

0101011110000 001

5781

0100101100000 000

4B00

+150°C

0960

0100101100000 001

4B01

0010100000000 000

2800

+80°C

0500

0010100000000 001

2801

0000110010000 000

0C80

+25°C

0190

0000110010000 001

0C81

0000000000001 000

0008

+0.0625°C

0001

0000000000001 001

0009

0000000000000 000

0000

0°C

0000

0000000000000 001

0001

1111111111111 000

FFF8

−0.0625°C

1FFF

1111111111111 001

FFF9

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