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Today, when I was searching for find some dies, I saw these pictures:

die1

atmega169p

die2

Now I'm curious that know how can some guys discern all part of a MCU? Is there any points that I use those to discern all part of a MCU? they can discern RAM, FLASH, Clock generator unit and etc...

refrence of picturess:

http://blog.ioactive.com/2007_11_01_archive.html

http://www.eetimes.com/document.asp?doc_id=1255032

http://www.mdpi.com/2079-9268/1/1/109/htm

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    \$\begingroup\$ zeptobars.ru/en \$\endgroup\$ – jippie Apr 16 '14 at 16:08
  • \$\begingroup\$ Apparently only some guys can do this, no women allowed. \$\endgroup\$ – JYelton Apr 16 '14 at 17:39
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Memory will be a regular array, and sometimes you can guess a larger block like a A/D. However, usually the way the people that make these pictures know which sections are what is because they designed the chip.

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  • \$\begingroup\$ Thanks Olin for reply. I have an idea. In your opinion, is it Wisely to say that each unit is near to a pin, that pins related to that part? for example if a unit is near to some A/D pins thus that unit is A/D \$\endgroup\$ – Roh Apr 16 '14 at 14:06
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    \$\begingroup\$ @Roh: Yes, that can be a clue. Note "clue", as apposed to definative answer. \$\endgroup\$ – Olin Lathrop Apr 16 '14 at 14:14
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    \$\begingroup\$ Knowing relative sizes of structures and other microarchitectural details can also provide clues. Also, having one die photo labeled by the designer helps in interpreting similar design features. As noted, location relative to pins and edges and relative to other features also gives clues (minimizing communication distance and power/heat distribution are design considerations). \$\endgroup\$ – Paul A. Clayton Apr 16 '14 at 19:00

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