While it is possible to have multi-processor boards with just one crystal oscillator, the XOUT of the chip using that being fed to the XIN of the others, I don't know if, or how well, that will work for RP2350. It is perhaps better to use a crystal oscillator module to drive all XIN.
Another approach is to have one chip using a crystal oscillator and generating the XIN clock for the others under program control, using PWM or some other clock generator.
Reading the RP2350 datasheet will probably be useful and Googling will likely find the answers to your questions but nothing IMO beats trying it, prototyping various configurations and assessing the results, because implementation doesn't always match theory.
If looking to minimise component usage you could consider slave RP2350 running Run from RAM code uploaded by the master RP2350 so only one Flash chip is needed.
Another approach is to have one chip using a crystal oscillator and generating the XIN clock for the others under program control, using PWM or some other clock generator.
Reading the RP2350 datasheet will probably be useful and Googling will likely find the answers to your questions but nothing IMO beats trying it, prototyping various configurations and assessing the results, because implementation doesn't always match theory.
If looking to minimise component usage you could consider slave RP2350 running Run from RAM code uploaded by the master RP2350 so only one Flash chip is needed.
Statistics: Posted by hippy — Sat Jul 19, 2025 10:33 am