Post by thread:[EE] SDRAM question

256Mbits maybe? At Micron all the x32 SDRAM's are 3.3v and noted as end-of-life. There are 256Mb x 32 RLDRAMS @ 1.8v. Gary Crowell Micron Technology {Quote hidden}> -----Original Message----- > From: spam_OUTpiclist-bouncesTakeThisOuTmit.edu > [.....piclist-bouncesKILLspam@spam@mit.edu] On Behalf Of Vasile Surducan > Sent: Monday, October 16, 2006 11:08 AM > To: Microcontroller discussion list - Public. > Subject: [EE] SDRAM question > > Hi all, > > I'm searching for a 256Mbytes SDRAM-2.5V & 32 bit in single chip. > It's SDRAM not SRAM. > Any clue? > > thx, > Vasile > --

On 10/16/06, gacrowellKILLspammicron.com <.....gacrowellKILLspam.....micron.com> wrote: > 256Mbits maybe? No, that's the problem. I could do it from 4 packages x 512Mbit but I have space constrain. I'm searching for single chip 256Mbytes organised in n blocks of 32 bit (2 Gbit) or as a final choice for 2x 1Gbit as 16 bit lenght The biggest SDRAM I found is 512Mbit (which means 64Mbytes) I'm searching for something non-existent ? Vasile > > At Micron all the x32 SDRAM's are 3.3v and noted as end-of-life. There > are 256Mb x 32 RLDRAMS @ 1.8v. > > Gary Crowell > Micron Technology > > > {Original Message removed}

Here's a solution I had used !years! ago for a Commodore64 memory expansion cartridge: Mount the chips piggyback, with the chip select pins sticking out. Takes the footprint of just one package. Regards, Anand ----- Original Message ----- From: "Vasile Surducan" <EraseMEpiclist9spam_OUTTakeThisOuTgmail.com> To: "Microcontroller discussion list - Public." <piclistspam_OUTmit.edu> Sent: Tuesday, October 17, 2006 10:35 AM Subject: Re: [EE] SDRAM question {Quote hidden}> On 10/16/06, @spam@gacrowellKILLspammicron.com <KILLspamgacrowellKILLspammicron.com> wrote: >> 256Mbits maybe? > > No, that's the problem. I could do it from 4 packages x 512Mbit but I > have space constrain. > I'm searching for single chip 256Mbytes organised in n blocks of 32 > bit (2 Gbit) or as a final choice for 2x 1Gbit as 16 bit lenght > The biggest SDRAM I found is 512Mbit (which means 64Mbytes) > > I'm searching for something non-existent ? > > Vasile > > >> >> At Micron all the x32 SDRAM's are 3.3v and noted as end-of-life. There >> are 256Mb x 32 RLDRAMS @ 1.8v. >> >> Gary Crowell >> Micron Technology >> >> > {Original Message removed}

On Oct 16, 2006, at 10:05 PM, Vasile Surducan wrote: > I'm searching for single chip 256Mbytes organised in n blocks of 32 > bit (2 Gbit) or as a final choice for 2x 1Gbit as 16 bit lenght > I don't think the 2Gbit chips are out yet, but some of the chip stacking companies like http://www.3d-plus.com/ look like they are stacking 512Mbit or 1Gbit die to yield up to 8Gbit in a single footprint. I don't see SDRAM at 2.5V, but they have DDR at that voltage. I would expect prices to be "scary." BillW