I got almost all of my wishes granted with RP2350

I can't imagine someone using an RP2040 in a real product, but the RP2350 fixes enough of my complaints that I'd be really excited to give it a shot.

There's a lot going for the 2040, don't get me wrong. TBMAN is a really cool concept. It overclocks like crazy. PIO is truly innovative, and it's super valuable for boatloads of companies looking to replace their 8051s/whatever with a daughterboard-adapted ARM core.

But, for every cool thing about the RP2040, there was a bad thing. DSP-level clock speeds but no FPU, and no hardware integer division. A USB DFU function embedded in boot ROM is flatly undesirable in an MCU with no memory protection. PIO support is extremely limited in third-party SDKs like Zephyr, which puts a low ceiling on its usefulness in large-scale projects.

The RP2350 fixes nearly all of my complaints, and that's really exciting.

PIO is a really cool concept, but relying on it to implement garden-variety peripherals like CAN or SDMMC immediately puts RP2350 at a disadvantage. The flexibility is very cool, but if I need to get a product up and running, the last thing I want to do is fiddle around with a special-purpose assembly language. My hope is that they'll eventually provide a library of ready-made "soft peripherals" for common things like SD/MMC, MII, Bluetooth HCI, etc. That would make integration into Zephyr (and friends) easier, and it would massively expand the potential use cases for the chip.

For my work, the lack of flash memory integration on the 2040 is a deal breaker. You cannot secure your code. Not sure that has changed with the new device.

It has: you can encrypt your code, store a decryption key in OTP, and decrypt into RAM. Or if your code is small and unchanging enough, store it directly in OTP.

What stops an attacker from uploading their own firmware that dumps out everything in OTP?

Signed boot. Unless someone at DEF CON wins our $10k bounty of course.

Do you have any protection against power/clock glitching attacks?