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MSP430F5438A-EP: Certificate of volatility

Part Number: MSP430F5438A-EP


Good day.

Our customer is requesting the certificate of volatility for  MSP430F5438AMPZREP that identifies the type of memory it contain, if the parts are volatile or non-volatile, and the method suggested for clearing the memory for this part.

Thank you.



  • Carlo,

    We do not have a formal document discussing the volatility of the memory elements in the design.


    I can provide general information that covers this.

    The memory is organized as Main Flash (4 x 64KB) banks  256KB

    Information Flash (4 x 128B) 512B

    BSL Flash (4 x 512B)   2KB

    RAM (4 x 4KB) 16KB.

    Peripheral RAM 4K.

    From the above list, the items labeled Flash are non-volatile, and will retain their contents through a power cycle.

    Customer code/data can live in the Main Flash, and also in parts of the information flash.

    The BSL Flash is not customer accessible.

    To clear any contents from the FLASH, it is required to erase the FLASH. 

    Parts of the information flash, will contain device specific data used for calibration and features.  If this is erased, then the calibration data is no longer usable. 

    Additionally, there are registers within the design implemented with flip flops or registers.   These registers will be cleared with a power cycle.

    The RAM block and peripheral memory will be cleared with a power cycle.

    The only memory that will be retained from a power cycle are the elements labeled Flash.

    The BSL section contains bootloader code in Flash, and is not accessible by user.

    Hopefully this provides enough information.

    If this answers your question, please click "This Resolved My Issue"