SSDDR

SATA NAND Flash Storage on a DRAM Memory Module

Can Free up System Space

 

Solid-State Double Data Rate (SSDDR) is an enhanced NAND DIMM with the added functionality of a DRAM DIMM. It combines DDR2 or DDR3 DRAM with SLC or MLC NAND flash on a single memory module as an easy way to reduce system space, cost and latencies over traditional SATA I/II form factors, such as Compact Flash (CF) or 1.8”/2.5” Solid State Storage Disk (SSD). SSDDR has the potential to replace Compact Flash (CF).

 

 Applications

 

An SSDDR Flash/DRAM memory module can be designed in many small DIMM form factors as a way to pack more DRAM memory (2GB+) and Flash storage (32GB+) into small space-constrained computer systems such as Single Board Computers (SBCs), ETX, COM Express, ATCA, uTCA or other embedded systems applications.

Densified packaging in Multi Chip Packages (MCP) for Chip on Board (COB) applications will also be available.

 

10 Reasons to Consider SSDDR

SSDDR can enable system designer to:

• Free up valuable real estate on the system board by eliminating the big bulky CF /SSD socket and the associated space required for a Compact Flash or 1.8”/ 2.5” SSD card. 
• Reduce costs by eliminating the need for a CF/SSD socket.
• Reduce Bill of Material (BOM) structures by eliminating CF/SSD and socket PNs.
• Reduce the overhead cost associated with qualifying multiple CF/SSD suppliers for the AVL.
• Improve heat dissipation and airflow within the system using a low profile small mechanical envelop. SSDDRs are available in many form-factors to suit system needs.
• Reduce latencies associated with SATA storage since the NAND flash is closer to the processor.
• Decrease the overall system power consumption by reducing the high-speed signal's PCB length.

 

Additional considerations:

• SSDDRs can be ruggedized for defense applications or harsh industrial environments.
• The SODIMM form factor is being considered by ONFI.org as an industry standard for the NAND DIMM and FLASH DIMM. The SSDDR is under consideration in JEDEC for industry standardization. Read More about a shared interface between Flash anad DRAM
• Large computer OEMs are currently in the process of adopting NAND DIMMs and SSDDR.

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