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CCS/TMS570LS0232: About function safety

Xinyu Wang
Intellectual 845 points
Part Number: TMS570LS0232

Tool/software: Code Composer Studio

Hello, TI Engineers

I am using TMS570LS0232 for BMS function safety. Could you predict the entire function safety code size? And for nERROR pin, I found it is a I/O. I want to know how to use this pin as a input. And I saw the document. It said pull down. So it means if self-test result is ok, the nERROR pin would output a high level signal?

Thanks!

Regards!

Xinyu

 

  • 0
    TI__Guru**** 197126 points

    Hello Xinyu,

    It is hard to predict the functional safety code size for your BMS system. It depends on which modules are used, and which safety mechanisms are used in your application, etc.  

    After PORRST, the nERROR is an output pin. The nERROR pin can be monitored externally as an indicator of a fault condition in the microcontroller. It can not be used as input. 

    ESM Group1 (low-severity) channels have configurable ERROR pin behavior. nERROR pin action can be selected for each channel separately. ESM Group2 (high-severity) channels have predefined ERROR pin behavior. ESM Group3 (high-severity) channels have predefined ERROR pin behavior. So any group2 errors and group3 errors will assert nERROR pin.