John McMaster posts an informative thread on Twitter, starting with x-rays of the new Raspberry Pi Pico board and subsequently going layer by layer through the board’s RP2040 chip. The die shots are both beautiful and informative in understanding this new chip.
The thread indicates the chip is made in 40nm and at the TSMC fab.
There are some interesting features of note:
See the Twitter thread with more pictures here.
See a large zoomable picture of the die here.
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