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?
About DDR SDRAM
Started by ●May 7, 2007
Reply by ●May 7, 20072007-05-07
"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'
Reply by ●May 7, 20072007-05-07
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
Reply by ●May 7, 20072007-05-07
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
Reply by ●May 7, 20072007-05-07
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?
Reply by ●May 8, 20072007-05-08
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 helpsThank you for all!