I'm really mixing two things and wasn't very clear about it. The pico can kinda deep sleep but it requires an external wakeup trigger. It can't deep sleep from

I'm really mixing two things and wasn't very clear about it. The pico can kinda deep sleep but it requires an external wakeup trigger. It can't deep sleep from its own clock. Even so its deep sleep is pretty high power compared to most embedded chips. The zero (w) and zero 2 w don't have the equivalent of suspend-to-ram with a low sleep current. I'm not sure if that's a limitation of the SOC or the driver or both, but rpi was fairly clear it wasn't in the cards: https://github.com/raspberrypi/linux/issues/1281 https://github.com/raspberrypi/linux/issues/1281