TMS320F280039C-Q1: an over-temperature protection mechanism

Jenney Ni

Hi all,

Does the F280039 have an over-temperature protection mechanism?

A customer encountered an anomaly where, under high-temperature conditions, the software-based GPIO toggling mechanism (implemented via TIMER0 timing) stopped working — the GPIO was no longer toggling. At the software level, the customer has not added any application-layer logic to handle temperature conditions. After restarting the chip, it resumed normal operation.

The question is: at the hardware level, does the chip have any related mechanism, given that the junction temperature has not been exceeded?

Regards,

Jenney

4 months ago

0 Joseph Casuga 4 months ago

TI__Mastermind 45050 points

Hello Jenney,

F280039x has an internal temperature sensor but it does not shut down the device when a certain junction temperature is reached. Would be good to measure/observe other parameters like VDDIO level and current consumption, xRSN during operation up until the GPIO stops working to help isolate what is causing the code to stop working.

Regards,

Joseph

+1 Joseph Casuga 4 months ago in reply to Joseph Casuga

TI__Mastermind 45050 points

Hello Jenney,

Have not heard back regarding this topic so i am assuming this is closed. If there are further questions please feel to post again on the forum.

Regards,

Joseph

0 Jenney Ni 4 months ago in reply to Joseph Casuga

TI__Intellectual 2430 points

Hi Joseph,

The customer suspends the can issue block the CPU, so the GPIO cannot toggle. If there is any issue, i will submit a ticket again. Thank you~

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TMS320F280039C-Q1: an over-temperature protection mechanism