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AM263P4-Q1: Regarding flash retention specifications.

y.satou
Prodigy 90 points
Part Number: AM263P4-Q1


Hello, expert team.

I am reviewing the datasheet for AM263P4-Q1. It states that the built-in Flash ROM is IS25LX064. 

1) Is the temperature specified a junction temperature?

2) If No.1 is YES, can you provide information on the program cycle and lifespan at temperatures like 105°C and 125°C? 

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3) Why does the Flash Retention performance degrade compared to the standalone IS25LX064? 

image.png

 

Best regarts,

Yu Sato

  • 0
    TI__Intellectual 970 points

    Hi Yu Sato,

    Thank you for your inquiry regarding the AM263P4-Q1 and its built-in IS25LX064 Flash.

    1) Yes, the temperature specifications in the datasheet refer to junction temperature.

    2) For your specific request about 105°C and 125°C and retention performance degradation as compared to the standalone IS25LX064:

    I need to confirm the exact program/erase cycle specifications and data retention periods specifically at 105°C and 125°C junction temperatures with the ISSI team. I'll follow up with this information as soon as it's available.

    Best Regards,
    Mayank Shadwani

  • 0 in reply to Mayank Shadwani
    TI__Intellectual 970 points

    Hi Yu Sato,

    Thank you for your patience. I've received confirmation regarding your inquiry about the IS25LX064 flash specifications at elevated temperatures.

    I'd like to clarify that the data retention specifications mentioned in the IS25LX064 ISSI flash datasheet (20 years and 100K cycles) are not specified for the worst-case temperature (125°C). There is no performance degradation in the SIP implementation compared to the standalone flash.

    Regarding your specific question about data retention at 105°C and 125°C, I can now provide more detailed information. The data retention policy at these temperatures depends significantly on the number of Program/Erase (P/E) cycles:

    1. For P/E cycles ≤ 10:
    - At 105°C: Data retention of approximately 30 years
    - At 125°C: Data retention of approximately 8 years

    2. For P/E cycles ≤ 10,000:
    - At 105°C: Data retention of approximately 7 years
    - At 125°C: Data retention of approximately 1 year

    3. For P/E cycles ≤ 100,000:
    - At 105°C: Data retention of approximately 1 year
    - At 125°C: Data retention of approximately 2 months

    This information should help you determine the appropriate design considerations for your specific application, especially if you're operating at these elevated temperatures for extended periods.

    Please let me know if you have any further questions or require additional clarification.

    Best Regards,
    Mayank Shadwani