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TM4C129ENCPDT: Flash upper and lower banks

Paolo Mattachini
Intellectual 290 points
Part Number: TM4C129ENCPDT

Hello,

I have a doubt about mirror mode in flash: if I understand the manual correctly when mirror mode is active the max application size is 512 kB as half of the flash is reserved for application update during runtime,

but if mirror mode is not active the whole application can be as large as 1024 kB?

Thank you for a clarification.

Paolo

  • 0
    TI__Guru**** 191486 points

    Hi Paolo,

      Your understanding is correct. If you use mirror mode then you can set up for two application images with one residing at the upper 512kB and another at lower 512kB physically. The upper image will be mirrored to the lower 512kB from CPU's memory address standpoint although it physically resides at the upper half of the flash. If you don't use mirror mode then you have pretty much the 1MB available for your application.