Hi ,In my 32f767 board ,The LTDC unit is set and the LCD works well.I want to define an array in the SDRAM. I defined it at Address: 0XCF000000 that does not have overlap with the LCD frame buffer.But when I run the program, the LCD was hanged.

[Tesla DeLorean]

Your design has 256MB of SDRAM?

Your code has a while(1) loop in the HardFault_Handler?

[SKari.1]

Dear Tesla,

Thank you very much for your attention.

Yes, it is 256MB--(MT48LC16M16A2P)

And i have  while(1) loop in the HardFault_Handler too.

I would be glad to hear from you.

kind regards

Saeed

[Tesla DeLorean]

No, that's a 256Mb device (32MB), highest usable address is 0xC1FFFFFF, surely?

Have your Hard Fault Handler output some actionable data, posted multiple examples, and then it perhaps might not appear to "hang"