TMS320F280039C: Safety Intergrity Check

liu zhao

Hello,

Is there any way for DSP to detect incorrect clock frequency and over voltage of the voltage rails(VDDIO,VDDA & VDD) against a threshold value?

over 2 years ago

0 Joe Prushing over 2 years ago

TI__Genius 17311 points

Hello, please see Functional Safety Manual for TMS320F28003x Real-Time Microcontrollers for a list of safety integration checks for F280039C.

Specifically for clock integrity you can look into missing clock detect (MCD) and Dual Clock Comparator (DCC).

Regarding supply monitoring, you can look at the BOR specification in the datasheet to determine whether it is sufficient for your application or whether an external supervisor is required.

Regards, Joe

0 Gus Martinez over 2 years ago in reply to Joe Prushing

TI__Mastermind 30381 points

You would want to use an external voltage monitor to avoid common cause failure.

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TMS320F280039C: Safety Intergrity Check