SDRAM ON STM32F439I-EVAL2

[stdavod]

Posted on October 15, 2014 at 14:54

Hi

I try find datasheet SDRAM on this board but I can't find it. I want Row Address Input and Column Address Input . please help me. #lmgtfy

[waclawek.jan]

Posted on October 16, 2014 at 14:33

SDRAMs are pin- and function- compatible to a great extent.

The only difference between the 2Mx32 and 8Mx32 chip (except the timing, a.k.a. ''latencies'', of course) is the addressing: while MT48LC2M32B2 uses A10:A0/A7:A0 for row/column addressing, IS42S32800G uses A11:A0/A8:A0. This should be reflected in the programming of FMC, but I am no expert on that (a quick glance into RM0090: NC and NR fields in FMC_SDCRx register should do the trick). JW

[Tesla DeLorean]

Posted on October 16, 2014 at 14:34

now what can we do?

Larger part, same footprint, same pins, you would adjust the geometry (rows,columns,banks) and timing parameters (ras,cas,etc) to match the data sheet for the SDRAM.

[stdavod]

Posted on October 18, 2014 at 18:32

you can help me for do this work.

How should I set up SDCR1, SDCMR and  SDRTR registers?

[Tesla DeLorean]

Posted on October 19, 2014 at 03:59 The original post was too long to process during our migration. Please click on the provided URL to read the original post. https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006I6gN&d=%2Fa%2F0X0000000bt7%2FBiLMvd6dNSYy6dMqU3G2ap_mUVloHuhlWjKiJQQoKTk&asPdf=false

[stdavod]

Posted on October 20, 2014 at 12:03

I try port u-boot  provide by emcraft for stm32f429 discovery to stm32f439i-eval2.(

https://github.com/EmcraftSystems)

I

am doing

this for the

high school

,

and

thank

Mr.

for all this

useful information

.

I

've done

them all

, but

it did not work

.

I need

someone who

knows

what to do.