Memory module and memory system

Details Memory module and memory system Memory module and memory system

2006-10-17

2006-10-17

Elms, Richard (Department: 2824)

Static information storage and retrieval

Interconnection arrangements

C365S189011, C365S051000

Reexamination Certificate

active

07123497

ABSTRACT:
In a memory module including a plurality of DRAM chips which transmit/receive a system data signal with a predetermined data width and at a transfer rate and which transmit/receive an internal data signal having a larger data width and a lower transfer rate as compared with the system data signal, it has become clear that there is a restriction on the transfer rate of the system data signal and that speeding-up cannot be expected. A current consumption in a plurality of DRAMs constituting the memory module is large, and this is also a factor for hindering the speeding-up. There is obtained a memory module in which a plurality of DRAM chips are stacked on an IO chip and in which each DRAM chip is connected to the IO chip by a through electrode and which comprises a constitution for mutually converting the system data signal and the internal data signal in each DRAM chip by the IO chip. In this constitution, a wiring between the DRAM chips can be shortened, and DLL having a large current consumption may be disposed only on the IO chip.

REFERENCES:
patent: 6133640 (2000-10-01), Leedy
patent: 2002/0036338 (2002-03-01), Matsuo et al.
patent: 2004/0080013 (2004-04-01), Kimura et al.
patent: 2005/0082664 (2005-04-01), Funaba et al.
patent: 2005/0139978 (2005-06-01), Hirose
patent: 6-291250 (1994-10-01), None
patent: 9-504654 (1997-05-01), None
patent: 2001-256772 (2001-09-01), None

Affiliated with

Also associated with

Rating

Memory module and memory system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Memory module and memory system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Memory module and memory system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3668805