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MSP430FR2311: MSP430FR2xxx Ramdom Number Generation

Kaneyama Tomoki
Prodigy 10 points
Part Number: MSP430FR2311
Other Parts Discussed in Thread: MSP430F2121, MSP430FR2153,

Tool/software:

Hi,

I am using a MSP430F2121 with slaa338a random number generator.

I need to switch to a new MPU.

For cost reasons, I am considering either the MSP430FR2311 or MSP430FR2153.

Can I use the random number generation function of slaa338a with these two MPUs?

The clock setting register seems to be different from MSP430F2121.

Thank you in advance.

 

  • 0
    Guru 37035 points

    Even if they don't have the VLO, you can use the LFXT with some loss of randomness

    "ACLK could also be sourced from LFXT1 with a 32-kHz crystal. This method can also be used to generate
    random numbers, but it is less reliable, because of the more predictable nature of the 32-kHz crystal. It is
    also less secure, because one of the clock sources is now sourced into the microcontroller externally. This
    fact could be used by an attacker looking to influence the selection of random numbers and compromise a
    system. These facts should be weighed against the security requirements of a system when deciding to
    use LFXT1 as the ACLK source for random number generation"

  • 0 in reply to Keith Barkley
    Prodigy 10 points

    Thanks Keith, for your help .
    I'll give it a try.

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