TSENS

[davidtosenovjan]

Dear safety experts, would you please comment customer question below? It is related to MPC5777C device and its temperature sensor digital triggering at -40 degrees. As there is an accuracy +- 5 degrees, it may happen that detector trigger reset at -35 degrees and they want to run their application down to -40 degrees.

Subsequent question is as follows:

“Customer would like to know if it is possible to turn this triggering function completely off and still use the MCU in safety critical application?

Other option would be to turn on the TSENS while after the MCU itself has been started (tens of seconds) and monitor progress of the temperature with very low frequency. If temperature goes over triggering point ( minus side) then it would be most likely below -40C and reset happens”

Thanks in advance

[Yashwant_Singh]

Hi David,

Apologies for the delay.

We would like you to refer an application note(see AN769101-S32R294 and S32R45 Thermal Monitoring Unit Application Note(0.1)) for a different product that deals with a similar issue. Please see if this helps. If not then do let us know we can look into more details.

Thanks!

-Yashwant

[davidtosenovjan]

Thanks. Document is confidential proprietary. Is NDA enough to distribute it?

Or should I make extract from section 6 which I think answers their concerns?

[Yashwant_Singh]

Hi David,

It is available to download from nxp.com. The customers just have to log into their account, click My NXP Account (top right),  click Secure Files and then search for S32R294 product. You will find “S32R294 and S32R45 Thermal Monitoring Unit Application Note” in the list.

We would again like to highlight to the customers that this is for a different product and is just meant for as a reference for the product in question over here.

Thanks!

-Yashwant