6.3.4 Temperature Data Format

Temperature data can only be read from the Local and Remote Temperature registers .

Remote temperature data with the digital filter off is represented by an 11-bit, two's complement word or

unsigned binary word with an LSb (Least Significant Bit) equal to 0.125°C. The data format is a left justified

16-bit word available in two 8-bit registers. Unused bits will always report "0".

Table 6-1. 11-bit, 2's complement (10-bit plus sign)

Temperature

Digital Output

Binary

Hex

+125°C

0111 1101 0000 0000

7D00h

+25°C

0001 1001 0000 0000

1900h

+1°C

0000 0001 0000 0000

0100h

+0.125°C

0000 0000 0010 0000

0020h

0°C

0000 0000 0000 0000

0000h

−0.125°C

1111 1111 1110 0000

FFE0h

−1°C

1111 1111 0000 0000

FF00h

−25°C

1110 0111 0000 0000

E700h

−55°C

1100 1001 0000 0000

C900h

Table 6-2. 11-bit, unsigned binary

Temperature

Digital Output

Binary

Hex

+255.875°C

1111 1111 1110 0000

FFE0h

+255°C

1111 1111 0000 0000

FF00h

+201°C

1100 1001 0000 0000

C900h

+125°C

0111 1101 0000 0000

7D00h

+25°C

0001 1001 0000 0000

1900h

+1°C

0000 0001 0000 0000

0100h

+0.125°C

0000 0000 0010 0000

0020h

0°C

0000 0000 0000 0000

0000h

Remote temperature data with the digital filter on is represented by a 13-bit, two's complement word or unsigned

binary word with an LSb (Least Significant Bit) equal to 0.03125°C (1/32°C). The data format is a left justified

16-bit word available in two 8-bit registers. Unused bits will always report "0".

Table 6-3. 13-bit, 2's complement (12-bit plus sign)

Temperature

Digital Output

Binary

Hex

+125°C

0111 1101 0000 0000

7D00h

+25°C

0001 1001 0000 0000

1900h

+1°C

0000 0001 0000 0000

0100h

+0.03125°C

0000 0000 0000 1000

0008h

0°C

0000 0000 0000 0000

0000h

−0.03125°C

1111 1111 1111 1000

FFF8h

−1°C

1111 1111 0000 0000

FF00h

−25°C

1110 0111 0000 0000

E700h

−55°C

1100 1001 0000 0000

C900h

LM95231

SNIS139F – FEBRUARY 2005 – REVISED JANUARY 2024

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