On May 7, 8:45 pm, Chris <c@c> wrote:
> Gordon Freeman wrote:
> > I'm working with DDR SDRAM but I don't know how to choose row address
> > and column address.
> > Can you help me, please?
>
> I'm only familiar with SDRAM, DDR should be somewhat similar wrt/
> the commands you must issue (PRECHARGE, ACTIVATE, etc.)
>
> To get started on the basics:
>
> http://en.wikipedia.org/wiki/SDRAMhttp://download.micron.com/pdf/datasheets/dram/sdram/512MbSDRAM.pdfhttp://www.maxwell.com/pdf/me/app_notes/Intro_to_SDRAM.pdf
>
> Some technical notes worth reading:
>
> http://download.micron.com/pdf/technotes/ZT05.pdfhttp://download.micron.com/pdf/technotes/ZT01.pdfhttp://download.micron.com/pdf/technotes/TN4801.pdf
>
> An interesting article from Ars Technica:
>
> http://arstechnica.com/paedia/r/ram_guide/ram_guide.part2-4.html
>
> Hope that helps

Thank you for all!

Be aware... DDR SDRAMs have many many other nuances beyond just
selecting addresses properly... tons of startup constraints, all sorts
of timing requirements between operations, etc...   you NEED to read
the datasheet cover to cover about a half a dozen times or you will
absolutely miss something.

On May 7, 5:44 am, Gordon Freeman <gordonfreeman1...@gmail.com> wrote:
> Hi everyone!
> I'm working with DDR SDRAM but I don't know how to choose row address
> and column address.
> Can you help me, please?

Gordon Freeman wrote:

> I'm working with DDR SDRAM but I don't know how to choose row address
> and column address.
> Can you help me, please?

I'm only familiar with SDRAM, DDR should be somewhat similar wrt/
the commands you must issue (PRECHARGE, ACTIVATE, etc.)

To get started on the basics:

http://en.wikipedia.org/wiki/SDRAM
http://download.micron.com/pdf/datasheets/dram/sdram/512MbSDRAM.pdf
http://www.maxwell.com/pdf/me/app_notes/Intro_to_SDRAM.pdf

Some technical notes worth reading:

http://download.micron.com/pdf/technotes/ZT05.pdf
http://download.micron.com/pdf/technotes/ZT01.pdf
http://download.micron.com/pdf/technotes/TN4801.pdf

An interesting article from Ars Technica:

http://arstechnica.com/paedia/r/ram_guide/ram_guide.part2-4.html


Hope that helps

Gordon Freeman wrote:
> Hi everyone!
> I'm working with DDR SDRAM but I don't know how to choose row address
> and column address.
> Can you help me, please?
> 
The Micron website has good datasheets and some application notes for 
all the SDRAMS. Here's a place to start:

http://www.micron.com/products/dram/ddr/partlist.aspx?Select=Select

This newsgroup has had many discussions about SDRAMs, both single and 
double data rate. The basic operation of SDRAMs are the same (active, 
precharge, read, write, refresh) whether they are single or double data 
rate, DDR or DDR2. A good tutorial on any of the families would probably 
answer many of your questions.

---
Joe Samson
Pixel Velocity

"Gordon Freeman" <gordonfreeman1983@gmail.com> wrote in message 
news:1178531084.255221.183550@y5g2000hsa.googlegroups.com...
> Hi everyone!
> I'm working with DDR SDRAM but I don't know how to choose row address
> and column address.
> Can you help me, please?
>

Google 'datasheet' 

Hi everyone!
I'm working with DDR SDRAM but I don't know how to choose row address
and column address.
Can you help me, please?