MSP430F5437A: RAM state after POR

Jan Moeller

Prodigy 10 points

Part Number: MSP430F5437A

Hi,

I have quick question and need a short answer :-)

Is the content of a RAM variable that is declared as __no_init kept after a POR?

I am using IAR IDE C compiler.

BR,

Jan

over 4 years ago

0 James Evans over 4 years ago

TI__Mastermind 49692 points

Hello,

The __no_init declaration instructs the startup code not to initialize this variable in RAM. Since POR means "Power On Reset", the RAM will still have power applied, so it should maintain its contents. If you're looking to save variables across power cycles where power is lost, then I would recommend using Flash (non-volatile memory) to periodically back up those variables.

Required info about __no_init variables

IAR C/C++ Compiler User Guide

Regards,

James

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MSP430F5437A: RAM state after POR