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I got almost all of my wishes granted with RP2350 (dmitry.gr)

700 points by elipsitz · 732 days ago · 341 comments on HN

Article summary

The Raspberry Pi RP2350 microcontroller has been announced, featuring two Cortex-M33F cores, improved DMA, and enhanced PIO capabilities. The chip also supports external PSRAM and has variants with internal flash and more GPIOs. The author, who had early access to the RP2350, is impressed with the improvements and suggests that it could be a better alternative to the STM32H7. The RP2350 is used in the new Raspberry Pi Pico 2 board.

Main themes

  • RP2350 features
  • Comparison to STM32H7
  • Microcontroller design
  • Raspberry Pi Pico 2
  • PSRAM support
  • GPIO and peripherals

What commenters say

  • The RP2350 is a significant improvement over the RP2040, with features like improved DMA and enhanced PIO capabilities making it a more powerful microcontroller.
  • The support for external PSRAM and internal flash variants makes the RP2350 a more versatile option for developers.
  • Some commenters are skeptical about the RP2350's power management capabilities and question whether it is truly low-power.
  • The 5V tolerant GPIO is a major advantage for integrating with other components, but may not be sufficient to drive inputs that expect 0-5V levels correctly.
  • The inclusion of RISC-V cores is a notable feature, but the verification of the core's correctness is a concern.
  • The RP2350's ability to support a wide range of applications, from retrocomputing to modern IoT devices, makes it an attractive option for developers.
  • Some commenters are disappointed that the RP2350 does not have better analog capabilities, such as more ADC channels or a built-in DAC.
  • The RP2350's price point and availability make it an attractive alternative to other microcontrollers on the market.