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I am designing an PCB with an STM32H743 and IS42S16100H 1Mx16 SDRAM. I have two issues wiring up the SDRAM as detailed below.

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  1. The SDRAM has twelve address inputs A0-A11, where A11 is the bank select. In STM32CubeMX FMC section should I configure the SDRAM controller for 12 bit address and connect FMC_A0-A11 of the STM32H7 to the DRAM or configure for 11 bits and connect FMC_BA0 of the STM32H7 to A11 of the DRAM ?
  2. In the reference manual (RM0433 Rev 06, page 795) it is stated that Autoprecharge is not supported and that FMC_A(10) will always be driven low. However in sample code on the community page i noted reference to using the precharge all command which requires A10 to be high. Is the reference manual correct and if so how is the SDRAM controlled ?
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