STM32H743BIT Custom Board SDRAM Write/read wrong values.

[GRK.1]

Hello Everyone,

Hope you are doing well.

I tried to write/read data from SDRAM with STM32H743BIT6 based custom board. But i got wrong values.

On writing a single 32bit value to 0xD0000800 memory location. instead of getting a value at that particular memory location the whole memory got updated with a wrong value. below is the screenshot of the memory Browser in which i tried to write 1 to 0xD0000800.

and On reading the same memory location the complete memory shows 0xFFFFFFF/4,294,967,295. below is the Screenshot of the memory browser.

 

I followed design reference and code example of STM32H743ZI-Eval board. the only difference is the SDRAM package. I am using IS42S32800J instead of IS42S32800G-6BLI.

Below is the schematic of the SDRAM and MCU pinouts

and below is the SDRAM configuration

 

Thanks in advance...