TMS570LC4357-SEP: Internal Temperature sensor selection and accuracy

Hi Dhir Gandhi,

Dhir Gandhi said:

Location of each sensor on the die

Dhir Gandhi said:

Measurement range

TI measured between -45 to 130C.

Dhir Gandhi said:

Accuracy

The inherent design accuracy of the internal thermistor is +/- 2C.

Refer below thread for more details:

(+) TMS570LC4357 temperature sensor accuratcy - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

Dhir Gandhi said:

How to select which one of the 3 sensors to use

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Thanks & Regards,
Jagadish.

Hi Dhir,

Dhir Gandhi said:

1. If I want to use all three temperature senors, should I leave the respective ADC channel floating?

There is no clear confirmation regarding this, but i found similar question in below thread

(11) Does the temp sensor ADC input eliminate that pin from its other functions? - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

According to it, we can use the both the functionalities. However, my suggestion is that, do the testing once before proceeding for production.

Dhir Gandhi said:

Also, requesting you to take a look at this open query.

I will check this out.

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Thanks & regards,
Jagadish.