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naser moravej
naser moravej
Associate II
October 2, 2019
Question

STM32F429 DISCOVERY LTDC 640 * 480 8BIT SDRAM INTERFACE

  • October 2, 2019
  • 1 reply
  • 539 views

Hello everyone.

I want to show a picture from external SDRAM in 8bit mode using FMC with stm32f429zi discovery board.

As long as I use FMC in 16bit mode with 16-bit byte enabled, I can show a picture but as soon as I uncheck "16-bit byte enable", even in 16 bit mode, everything get ruined.

Thanks

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1 reply

waclawek.jan
waclawek.jan
Super User
October 2, 2019

> as soon as I uncheck "16-bit byte enable"

Where do you uncheck that? What does it mean in terms of FMC registers' content? What does "even in 16-bit mode" mean?

Don't you exceed the memory's bandwith? Read AN4861.

JW

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