STM32H753 208 pins, can read from SRAM but can not write to SRAM. The SRAM is Panasonic IC

[pyang.0]

 aTxBuffer[0]=0x11;

HAL_SRAM_Write_32b(&hsram1, (uint32_t *)ADDR_MNM1221+0x0, (uint32_t *)aTxBuffer,1); 

It is a write code to SRAM but fail. The Panasonic IC MNM1221. The attachment is the datasheet.

This reading code is successful.

 HAL_SRAM_Read_32b(&hsram1, (uint32_t *)ADDR_MNM1221+0x0, (uint32_t *)aRxBuffer,1); 

Pls give me some adivisies. Thank you.

My mail box is : cai_iven@163.com

[Tesla DeLorean]

It's wired up how?

It's configured how?

[waclawek.jan]

Write fails how?

 FMC_BCRx.WREN is set?

JW