Guru
Joined: 31/12/2012
Location: New ZealandPosts: 2526
| Posted: 04:10pm 07 May 2026 |
from the photo of the board here:
https://www.waveshare.com/rp2350-touch-lcd-3.5.htm
https://www.waveshare.com/img/devkit/RP2350-Touch-LCD-3.5/RP2350-Touch-LCD-3.5-details-inter.jpg
it looks like the RP2350's flash chip, labelled (2), is in a largish (SOIC-8?) package with the pins readily accessible. perhaps one could just piggyback a PSRAM on top of this (with CS routed to a suitable GPIO line - 0, 8, 47 are available on the I/O header) to provide space to hold a full 320 x 480 screen buffer - 300k required if my maths is right.
it is a pity the designers didn't include an unpopulated footprint for the PSRAM.
cheers,
rob :-)
Edited 2026-05-08 02:35 by robert.rozee