RP2350 PSRAM: how to wire, how to use?

Author	Message
matherp Guru Joined: 11/12/2012 Location: United Kingdom Posts: 11615	Posted: 08:30am 26 Aug 2024       The one problem with this approach is the size of the used block table. This uses 2 bits for every 256 bytes So for 8Mbytes this is 8x1024x1024/256/4 bytes. If the same firmware is to support the RP2350 with or without PSRAM then this space needs to be permanently allocated which is a waste if PSRAM is not present.