ADT7482 데이터 시트보기 (PDF) - Analog Devices

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ADT7482

Dual Channel Temperature Sensor and Overtemperature Alarm

Analog Devices 

ADT7482

TEMPERATURE DATA FORMAT

The ADT7482 has two temperature data formats. When the temperature measurement range is from 0°C to 127°C (default), the

temperature data format for both local and remote temperature results is binary.

When the measurement range is in extended mode, an offset binary data format is used for both local and remote results. Temperature

values in the offset binary data format are offset by +64. Examples of temperatures in both data formats are shown in Table 8.

Switching between measurement ranges can be done at any time. Switching the range also switches the data format. The next temperature

result following the switching is reported back to the register in the new format. However, the contents of the limit registers do not

change. Ensure that when the data format changes, the limit registers are reprogrammed as necessary. For more information, refer to the

Limit Registers section.

Table 8. Temperature Data Format (Local and Remote Temperature High Byte)

Temperature

Binary

–55°C

0 000 00002

0°C

0 000 0000

+1°C

0 000 0001

+10°C

0 000 1010

+25°C

0 001 1001

+50°C

0 011 0010

+75°C

0 100 1011

+100°C

0 110 0100

+125°C

0 111 1101

+127°C

+150°C

0 111 1111

0 111 11113

1 Offset binary scale temperature values are offset by +64.

2 Binary scale temperature measurement returns 0 for temperature < 0°C.

3 Binary scale temperature measurement returns 127 for temperature > 127°C.

Offset Binary1

0 000 1001

0 100 0000

0 100 0001

0 100 1010

0 101 1001

0 111 0010

1 000 1011

1 010 0100

1 011 1101

1 011 1111

1 101 0110

Rev. 0 | Page 11 of 24

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