[General] Need a clear explain on After flashing program

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cnandha19

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After write the program into IC we turned off the microcontroller .. The turned on the microcontroller program starts to run from ROM ..how the internal operation takes place need a clear explaination please
 

Hi,

a really basic question.. therefore only a short answer. Details can be found on a lot of "basic microcontroller" documentations and tutorials.


* Power up
* power up reset --> setting all internal values to default values
* the same is done with the program counter --> it´s value points to the program address where the processing of the program starts
* often: some wait time to ensure stable power supply and stable clock
* release reset = start processing

Klaus
 
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