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MSP430FR6989: How to devide FRAM area

user5799068
Intellectual 320 points

Part Number: MSP430FR6989

The FRAM area can be divided into three segments.
Is it possible to divide one segment into its own program area and variable data area?

  • 0
    TI__Genius 12315 points

    Hello,

    It's possible to divide one segment. You need to set mpu_segment_border1  = mpu_segment_border2 = FRAM main memory start. You can manually sepcify memory segment bounaries and acess rights in CCS.

    B.R

    Winter

  • 0
    Intellectual 320 points
    Thank you for your reply.

    In this method, it become MPUSEGB1[15:0] = MPUSEGB2[15:0].
    In User's Guide(slau367o), It is written by NOTE
    /*
    NOTE: The same result is calculated during MAB analysis of segment membership independent of
    whether the higher value is in MPUSEGB1[15:0] or MPUSEGB2[15:0]. If
    MPUSEGB1[15:0] = MPUSEGB2[15:0], Segment 2 is not available and the main memory
    only contains 2 segments.
    */
    Can I change the addresses of 1 and 2?
    I would like to change in the folllows,
    Segment1 : 0x4400 to 0xFF80
    Segment2 : 0x10000 to 0x1A000

    Is it possible?

    Regards.
  • 0 in reply to user5799068
    TI__Genius 12315 points
    Hello,

    Yes, you can change the addresses of 1 and 2. The segment partition you mentioned is OK.

    B.R
    Winter

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