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AM2434: AM24 vs AM26: Safety-Critical Capabilities

Kaan Turel
Prodigy 30 points
Part Number: AM2434

Tool/software:

Hi,

I am evaluating the suitability of the AM24 series for safety-critical applications and would like to understand how it compares to the AM26 series in this context.


- Can the AM24 series processors also be considered safety-critical like the AM26 series?

- While the R5 cores in the AM26 run at 400 MHz, the ones in the AM24 run at 800 MHz — is this a disadvantage in terms of safety?

- Apart from the lockstep configuration, what other features make the AM26 more suitable for safety-critical applications compared to the AM24?

  • 0
    TI__Guru* 83715 points

    Hi 

    This was misassigned  and has been untended for a while. I have reassigned to AM26 team to help guide the discussion. 
    What kind of applications do you have in mind? Apart from safety are there any other criteria to make the processor selection?

  • 0 in reply to Mukul Bhatnagar
    Prodigy 30 points

    Hi,

    Thanks for your response.

    The target application involves control systems where safety is a key requirement. Apart from safety, we are also considering factors like real-time determinism, peripheral availability (especially for motor control and industrial communication), and long-term product longevity/support.

    That said, our main concern at this stage is evaluating whether the AM24 series can meet safety goals similar to the AM26, and whether the architectural differences (e.g., lack of hardware lockstep, faster R5 core frequency, etc.) introduce any limitations for functional safety certification.

    Any insights or official documentation comparing AM24 vs AM26 in terms of safety architecture would be very helpful.

  • 0 in reply to Kaan Turel
    TI__Mastermind 44474 points

    Hi,

    Please refer to this for details on AM26x safety features:

    https://www.ti.com/lit/po/sprt767/sprt767.pdf

    AM26x family is ASIL-d/SIL-3 certified for Industrial and automotive applications.

    Kaan Turel said:
    Any insights or official documentation comparing AM24 vs AM26 in terms of safety architecture would be very helpful.

    We do not have a direct comparision, but if you have any specific question please let me know.

  • 0 in reply to Nilabh Anand
    Prodigy 30 points

    Hi Anand,

    Thank you for your response. I'd like to ask a question, specifically regarding the processors' operating frequency differences. Why do the R5F cores in the AM24 run at 800 MHz, while those in the AM26 run at 400 MHz? Is the purpose of halving the frequency to increase safety? Or is this the maximum speed achieved in the AM26 by design?

  • 0 in reply to Kaan Turel
    TI__Mastermind 44474 points

    Hi Kaan,

    The two processors are based on two different process nodes and are different by design also.

    CPU frequency is not a factor for safety.