The RP1, Raspberry Pi’s first custom silicon chip #RaspberryPi @Raspberry_Pi

Raspberry Pi 5 is the most complicated and expensive engineering program ever undertaken at Raspberry Pi, spanning over seven years, and costing on the order of $25 million.

It’s their first flagship product to make use of silicon designed in-house at Raspberry Pi, in the form of the RP1 I/O controller. No, the RP2040 chip came afterwards, unknown to the world (the 2 was not the number of cores on the chip).

Now you can read Raspberry Pi documentation on the RP1, what it is and what it can do (and yes it does have some PIO!).

See the video below and more via a Raspberry Pi article and the initial documentation is here. Bonus video: James Adams and Eben Upton on designing Raspberry Pi 5.