Posted on July 11, 2017 at 15:23Hello,
I'm designing an application using STM32F469BIT6 and two AS4C4M16S 16bit bus SDRAM to be used as external program memory.
My idea is to use 4 byte enable (NBL0~NBL3) sending the lower two (along data [0~15]) to one IC and the higher two (along with [16~31]) to the other, using same 11bit address bus for both SDRAM ICs. As shown on the picture attach.
Where SDRAM_DQM[0-3] is connected to FMC_NBL[0-3], respectively.
I saw a similar schematic being used on another MCU, I just want to know if this setup will work with FMC as well.
#sdram #fmc #stm32f469
