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MSP430F5659: low power memory options

Juan Gonzales
Mastermind 37340 points

Part Number: MSP430F5659

we currently have a project using MSP430F5659 connected to microSD memory via SPI.  However, the system power consumption is too high so we are considering transitioning from a removable memory option towards a fixed option that can support 1MB of memory.  

1) Will using fixed SPI NOR or NAND flash be a lower power option.  

2) Can you recommend a part number(s) that is compatible with MSP430F5659 TI-RTOS FATFS file system?

Thank you in advance!

  • 0
    TI__Mastermind 37340 points
    More info...looking at MT29F1G01ABBFDSF and SST25WF080B in particular. Will these work with MSP430F5659?
  • 0 in reply to Juan Gonzales
    TI__Guru 56685 points
    Hello Juan,

    As far as the power differential between a SPI Flash versus SD card, I'm not sure of the potential power difference between the two memory options. From a MSP430 perspective, I would image the SPI Flash could potentially give you power savings as your SW overhead for accessing memory could be reduced and thus the MSP430 could sleep more. This is assuming that the power draw of an SD card is equal to a SPI Flash. This is not what I am sure about.

    In regards to support from TI-RTOS and FAT file system, I do not imagine any SPI Flash would support a file system. SPI flashes are typically very low protocol to communicate with. For example, SPI slashes tend to operate in one or two modes. Either you tell the SPI Flash which address you want to start reading from, and then it will keep reading sequentially until you stop reading from it (typical); Or, you tell the SPI Flash the address and how many bytes you are going to read. In this regard, any SPI Flash that meets the same electrical requirements (i.e. operate at 3V) can be connected to the MSP430 as the MSP430 can implement the correct protocol with SW.

    Hope this helps!
  • 0 in reply to Jace H
    TI__Mastermind 37340 points
    we have figured out lower power memory options and the remaining questions center around TI-RTOS support, hence I will take this up on the TI-RTOS forum. we can close this.

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