LPC3250 access sdram

[ywzhu]

There are two 16M x 16 SDRAM connect to the LPC3250 as a 32bit wide SDRAM.

I get some problems when accessing the SDRAM.

When write:

UNS_32 *p = (UNS_32 *)0x83FC0000;

*p = 0xE59F002C;

Then read from p and p+4, and the result is 0xE59FE59F, 0x002C002C respectively.

I cannot figure out what is wrong.

[CarlosCasillas]

Hi,

You could refer to application note AN10935 “Using SDR/DDR SDRAM memories with LPC32xx” in order to verify the connections of your SDRAM modules to the LPC microcontroller.

Hope this will be useful for you.
Best regards!
/Carlos
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