I am pretty excited about the RP2350. It addresses pretty much all my minor complaints about the RP2040 and improves on it in a number of ways. It manages to be much more powerful, yet keeps the clean and straightforward design that's so foreign to so many ARM MCUs these days.
A pair of 150MHz CM33Fs with 520KB SRAM and up to 16MB of QSPI SRAM and 16MB of XIP QSPI flash opens up a lot of possibilities, while avoiding the complexity of larger SoCs.
@swetland yes, I agree. It is looking quite good. I also like that they added a good way to handle A/B firmware images and a UART bootloader.
There are just a few small things that always annoyed me on the RP2040 that they didn't improve: like no internal Vref that you can mux to the ADC - even if they already have a voltage reference integrated as part of the voltage regulator. That would allow you to back-measure the current VADC.
Also still no fast CRC as part of PIO, so you can't implement CAN where you just have a very narrow timeslot to react to CRC ok/fail.
An ethernet MAC (RMII) would have been nice too, especially in the light of the new single pair ethernet standards that are becoming more popular.
Brian Swetland
Electronic Eel