Source: https://commons.wikimedia.org/wiki/File:ESP32-Dieshot.jpg
It's interesting how they are able to fit some much in a small space ~~considering most of it appears to be memory~~.
What are the octagons?
this post was submitted on 06 Aug 2024
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Inductors! They are being used for the RF stuffs (and maybe some clock PLLs).
Had no idea you could put inductors ON the die, but in hindsight, I guess there's no reason why not.
~8.5mm^2 of pure magic as far as I'm concerned.
Most of it appears to be an upper metal layer. You can't tell that that's memory from this view.
Interesting. I guess I assumed it was memory given how consistent it was. Thanks for clarifying.
A dude who took a similar picture also has some more pics where they removed the top layer of the RF circuit allowing you to look inside
https://electronupdate.blogspot.com/2018/08/espressif-esp32-teardown.html?m=1