Hi all. I'm newbies for STM32F7xxx. How many Mb for NOR/NAND Flash can use with STM32F746ZG, Quad-SPI? Thank you.
#NOR/NAND Flash Q-SPI
Hmm on the discovery the serial flash is fixed and sdio signals may not be accessible to plug other memories. For the chip itself, i guess that any size would work as the commands pass a 32 bit base address. Compared to usdcard qspi hw maps the serial memory within the stm32 memory space in read mode, enabling full hw management, xip and dma, dma2d access.
As I recall the decode window is 256MB (0x10000000). The limit on QSPI is no doubt in one of the manuals, and likely comes from either the address/command sequence used, or the address constraint just mentioned.
NAND only needs a few address lines, it behaves like a hard drive or mass storage device, so hundreds of GB, accessed via a window, and not providing execute-in-place.
Hi Nakorn Threesinghawong,
You may find the answer to your question with more further details on how to use Q-SPI on AN4760:
Retrieving data ...