LM75A: temp. reading issue

chentsu chung

Part Number: LM75A

Hi,

When reading temp. through I2C from pointer "00000000", if the temp is positive, then the return value is normal, but it will goes wrong if in negative temp.

Is there any ideal for the issue? Thank you.

C.T.

over 6 years ago

0 Amit Ashara over 6 years ago

TI__Guru**** 244400 points

Hello Chentsu

What is the value read and as seen on the bus when the temperature is negative? If you have a waveform capture of the SCL and SDA and when reading negative temperature that would be useful.

Also please provide any schematic and layout information if possible.

0 Amit Ashara over 6 years ago

TI__Guru**** 244400 points

Hello Chentsu,

Is there any update on the thread?

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LM75A: temp. reading issue