- doesn't have to be on die, but in package (mt7686). 2mb+ is pretty much what iot chips from the big players are shipping now.ESP_Sprite wrote:- More ram: That's kinda hard... the largest part of the chip already is RAM, and making more of it RAM decreases yields and increases cost by a fair amount...
- 'Real' deep sleep: Well, the hardware on the ESP32 already supports keeping RAM powered in deep sleep, but there's a physical limit you'll always run into, and that is that keeping RAM powered eats into the power budget by a lot. Maybe later on we can make some kind of 'hibernate' mode that saves the entire state of the CPU to flash, for true zero-power deep sleep and instant state restore... Anyway, what I'm saying is don't expect new silicon to change the status quo here; if we implement something like this, it's probably also going to support the ESP32; the issues are mostly in software.
- how about fram or sub threshold in package