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TMS320x281x -Energy save

Which does save more energy?

a) Erase the reset vector (erase any reference to the customer program). Does the CPU go to idle state?;

b) Puts the CPU in Halt low power mode?

  • Marcio,

    Option (b) will be lower power (put the CPU in HALT mode).  Option (a) (erase the flash) will cause the CPU to repeatedly get ILLEGAL op-code interrupts since it will be fetching an illegal op-code of 0xFFFF.

    Not sure what you're trying to do here though.  You must have some unusual application requirements/features.

    - David