IMXRT1021 change SDRAM issue (W9825G6 change to W9864G6)

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IMXRT1021 change SDRAM issue (W9825G6 change to W9864G6)

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Kris_Ke
Contributor III

Hi 

SDRAM can run programs normally when using W9825G6

But when using W9864G6, it will enter MemManage_Handler error when halfway through execution.

The two SDRAM W9825G6 (256Mb) W9864G6 (64Mb) in addition to the difference in capacity, there is a difference in one foot, the former has A12 pin, the latter is NC pin

 

W9825G6

25g.png

 

W9864G6

26g.png

 

The code is executable to start, but after using W9864G6 to start FreeRTOS vTaskStartScheduler(), it will enter MemManage_Handler error, W9825G6 will not

The SDRAM size has been changed to 64Mb in the setting

thumbnail_image004.png

Which setting still needs to be modified? Please assist in processing, thank you!

 

 

Kris

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jay_heng
NXP Employee
NXP Employee

From your MCUXpresso IDE setting: RAM1 size 0x600000 - 48Mb.

MemManage fault is always caused by incorrect MPU setting or wrong RAM region access