Can’t find an official announcement or datasheet yet, but according to this post:
* 2x Cortex-M33F
* improved DMA
* more and improved PIO
* external PSRAM support
* variants with internal flash (2MB) and 80 pins (!)
* 512KiB ram (double)
* some RISC-V cores? Low power maybe?
Only $1 more than the original Pico, that's an absolute steal. Although the Pico2 doesn't have PSRAM onboard so there's room for higher end RP235x boards above it.
Make one in an Arduino Uno form factor and double the price and they'd make a killing :-)
I try to dissuade n00bs from starting their arduino journey with the ancient AVR-based devices, but a lot of the peripherals expect to plug into an Uno.
Well there's the UNO-R4 Renasas I suppose, but this would be much cooler indeed. There's also the 2040 Connect in the Nano form factor with the extra IMU.
Downside is it occupies a CS on the QSPI controller, presumably bonding to the same pads as the QSPI pins on the package, so now you only have one external memory IC. It's a very small tradeoff all things considered, but is still technically a tiny disadvantage over highly integrated MCUs.
A potential alternative would have been a directly memory-mapped NOR flash die, but that would have required more bond wires, more dedicated pads on the die, a port on the bus, and on top of that the memory die would have been more expensive too.
An older (and often impractical) alternative is to use a single die with both flash and SoC on, in the same process. This usually forces a larger-than-desired process node to match the flash technology, making the SoC take up more space. The result requires no extra bond wires or pads, but now you're really manufacturing a flash chip with an MCU attached.
* 2x Cortex-M33F * improved DMA * more and improved PIO * external PSRAM support * variants with internal flash (2MB) and 80 pins (!) * 512KiB ram (double) * some RISC-V cores? Low power maybe?
Looks like a significant jump over the RP2040!