ADT7320, ADT7420 - Temperature reading options

Document created by analog-archivist Employee on Feb 23, 2016Last modified by MH@CAC on Feb 25, 2016
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Q

Why do I have an option between 13 and 16 bit temperature readings?

 

A

In 16-bit mode the user has a resolution of 0.0078°C but in 13-bit mode the
resolution is only 0.0625°C. However in 13-bit mode the 3 LSB’s of the
temperature register also contain the T_High, T_Low and T_Crit register flags.
If an interrupt is triggered it will appear in these bits. This can be useful
in continuous read mode where the master is only inputting a clock to receive a
temperature reading and not continuously polling over limit registers or
monitoring interrupt pins.

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