Story was updated this morning after I spoke with Philippe Berge, senior director of NOR, PCM, e.MMC business for Micron's Wireless Solutions Group. Berge said Micron has previously had PCM in volume production at 90-nm. He also touted this latest announcement as proof of PCM's potential.
In a comment added to my piece published July 2010
a reader cited a quote from Samsung “…Memory for portable consumer devices today is at a major turning point as mobile applications increasingly require more diverse memory technology,” said Jun Dong-soo, an executive vice president at Samsung Electronics.
“The launch of our PRAM in an advanced MCP solution for the replacement of 40 nm-class and finer geometry NOR meets this need head-on,” he said...."
The results of that head-on collision may have some relevance to Micron as they proceed along what appears to be the same road. For the new PCM I assume and hope “availability” means the 1G-bit MCP is fully qualified and with an associated data sheet. The write/erase lifetime cited for this 1 G-bit 45nm MCP device is given as 100,000 cycles, whereas Micron’s prediction for w/e cycle lifetime at 45nm was 10E9 cycles. This was discussed in
All things being equal, it may be churlish to describe this is anything but PCM progress; representing a scaling holding point until, and if, the very difficult PCM scaling problems ever get solved. My view is unless Micron can in short order get a scaled 8G-bit PCM in the MCP or their Cube (or even a multi-chip based 8G-bit PCM) they will suffer the same fate as the Samsung MCP-PCM. So continuing the road analogy above we hope they have their seat belts on.
Dylan: Did Micron tell you how many of these 90nm devices in "volume production" were actually shipped and sold? More importantly how many product design- in wins were achieved?
"Proof of PCM's potential" I think PCM potential has been there for fifty years-for PCM realization of potential is the name of the game, with PCM devices that are competitive in price, performance and reliability.