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nand flash problems STM32F746IGT6

Question asked by Backloz on Mar 18, 2016
Latest reply on Mar 21, 2016 by Backloz
I have a working device board based on STM32F429IGT6 processor, connected to SDRAM MT45W4MW16BxB and NandFlash MT29F2G08ABAEAWP-IT. 
  I replaced processor on the board by STM32F746IGT6 and configure the same AHB clock frequency of 180 MHz.
  The SDRAM began to work immediately but NandFlash failed to work. 
  NandFlash MT29F2G08ABAEAWP-IT is connected to fmc_bank3 ( address 0x80000000 ) a bank that is in both processors. 
  Please help to understand what could be the reason and what should be changed in the initialization to FMC controller.