Should be fast enough, but not at the full LCD refresh rate.
See the ST7789 datasheet, there are diagrams for frame transfer, leading ang lagging mode.
If the SPI clock is 62.5 MHz and say the LCD runs at 60Hz,
62500000/10/60 == ~ 104167 bytes can be transferred at 60Hz, so it is lagging
Using the lagging data transfer method, you should be able to display full-frame non-tearing video that updates at 30Hz. Of course, if it's 2D sprite-based stuff, partial updates will be faster. But worst-case 30 Hz full screen updates _seems_ feasible.![:D]( "Very Happy")
See the ST7789 datasheet, there are diagrams for frame transfer, leading ang lagging mode.
If the SPI clock is 62.5 MHz and say the LCD runs at 60Hz,
62500000/10/60 == ~ 104167 bytes can be transferred at 60Hz, so it is lagging
Using the lagging data transfer method, you should be able to display full-frame non-tearing video that updates at 30Hz. Of course, if it's 2D sprite-based stuff, partial updates will be faster. But worst-case 30 Hz full screen updates _seems_ feasible.
Statistics: Posted by katak255 — Mon Feb 24, 2025 2:48 am