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MSP430F247: Compatibility to MSP430F235

Thomas Rebhan
Prodigy 20 points
Part Number: MSP430F247
Other Parts Discussed in Thread: MSP430F235

Hi team,

I have an existing project with the MSP430F235TPMR and intend to replace it with the MSP430F247TPMR.

However, the datasheet shows a difference in the memory map of the RAM:

F235: 0x09FF to 0x0200

F247: 0x20FF to 0x1100

Can the replacement be done without change in software and circuit?

 

Best regards

Thomas

  • +1
    TI__Guru 56685 points

    Hello Thomas,

    For moving form MSP430F235 --> MSP430F247:

    Hardware wise -- no changes to your schematic or layout as the F247 just adds additional USCI and TimerCC instances. 

    Software wise -- You may need to recompile your code for the new target due to the RAM difference. Now, a portion of RAM of F247 is in the same location as F235, but it has extended and mirrored locations as well. My assumption is that RAM start location would be in the shared RAM addresses. If this is the case, then the same binary would work for both devices. 

  • 0 in reply to Jace H
    Prodigy 20 points

    Hello Jace,

    I had overlooked the second entry for "mirrored ram" in the memory map table.

    Thank you,
    Thomas

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