2022-05-21 05:23 AM
Hi.
Im using IS42S16400J SDram.
It was working fine when i first mounted it(its my own pcb design).
But there was some problem with the i2c pins so i had do unmount the stm32h745 and mount it again.
Now with the same code the sdram is not working fine.
The first time i write it i see in the memory region that its changed but suddenly it change to other random data.
If i write the sdram in the while loop every 1 ms the sdram works good but it wasnt like this before.
I have tested all the pins and all of them are connected.
I pulled up the sdram pins internally with cubemx but the out put will be 0xFF for all the memory. And if i pull it down the memory will be all 0x00;
I think its hardware.
Can anyone help me where the problem is?