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MSPM0L2228: supercap ref design

HS FAE Germany
Mastermind 32160 points
Part Number: MSPM0L2228

Tool/software:

Hello,
do we have a ref design with a supercap and CCS example?

Regards, Holger

  • +1
    TI__Mastermind 25570 points

    Hi Holger,

    The launchpad now includes a supercap, the connection is fairly simple. Connect the supercap to the VBAT pin and provide a decoupling cap. SuperCap does not need to be close to the MCU (I wouldn't put it very far though).

    I don't see a code example in the SDK, but you'll need to enable the SUPERCAPEN bit in SYSCTRL->SYSTEMCFG.

    Be aware that when you enable the supercap charging you will get an NMI with the VBATUP status. This is to notify the system that VBAT is now powered and you can operate the LFSS peripherals. If you lose any VBAT power while VDD is still powered you will get the VBATDN interrupt and you should not access any LFSS peripherals when VBAT is down or you will get a hardfault for accessing an unpowered peripheral.

    Regards,
    Luke