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Can boot flag be undefined when power's interrupted & boot flag changed

Latest Updated:12/20/2013


In the flash-self programming library of the RL78 family MCUs, does the value of the boot flag become undefined when power is interrupted while the setting of the boot flag is being changed by the FSL_InvertBootFlag function?


The value of the boot flag does not become undefined. The value is fixed to either 0x00 or 0x01 in accord with the timing with which power was interrupted.
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Flash Self Programming Libraries