Using STM32U5G9, is ext sdram required for TFT 800x480 application?

[Amelie ACKERMANN]

Using STM32U5G9, is ext sdram required for TFT 800x480 application?

[Roman LUDIN]

No, the internal RAM of 3.0 MB can hold double framebuffer, and still have room for the application+ - need of ONLY INTERNAL RAM is the idea with the STM32U5A9/G9 silicon

[Tesla DeLorean]

You shouldn't need external memory if you have enough linear RAM to accommodate your colour-depth in a frame buffer or two. Figure 768KB for 16-bit, 1.1MB for 24-bit each.

Die with 3MB of RAM / 4MB of FLASH are always going to be large and lowest yielding, thus expensive and hardest to source.