MobileStak™ System Module Solutions

MobileStak™ is a chip-stacking solution that enables smaller mobile products by combining virtually any processor, controller and memory device into a single, small footprint module. The MobileStak designs can integrate a variety of chip packages, as well as devices provided as bare die.

With MobileStak, multiple, heterogeneous devices like processors, controllers, and memories are assembled onto a flex circuit with a ball grid array interface to connect to a system motherboard. The flex assembly is folded, thereby stacking the devices into a single, small footprint module. The resulting BGA solution is just slightly larger than the largest of the stacked packages. Since pre-packaged, pre-tested components can be used to build the MobileStak, issues related to sourcing and handling bare-die can be minimized, and high yields can be achieved. In addition, when a very thin solution is required, bare dies can be integrated into MobileStak to reduce the overall module thickness.

MobileStak™

Now available for sampling is a MobileStak™ reference design that integrates the FreeScale i.MX31 processor with a Micron 64MB mobile DRAM device - both supplied in pre-tested BGA packages. The popular i.MX31 processor from Freescale was selected as the reference design because it represents an excellent solution for the MobileStak's targeted portable electronics applications, including high-function smart-phones, portable media players and portable industrial equipment.

Key Features

  • Availability
    • Production qualification samples available Q1 2007
  • Processor
    • Freescale i.MX31 processor
  • Memory
    • Micron 64MB Mobile DRAM
    • DDR memory bus connecting SoC processor and DRAM
  • Dimensions
    • LGA 14.48mm x 14.83mm x 2.20mm
    • BGA 14.48mm x 14.83mm x 2.40mm
  • Interfaces
    • Pin compatible with the 457-pin i.MX31 processor
    • See i.MX31 processor data sheet for complete description of interfaces and functionality
  • Manufacturing Test
    • Test solution that exercises processor / memory interface

Applications

  • Portable Electronics
  • Portable Media Players
  • Portable Industrial Equipment
  • Mobile PCs
  • Electronic Imaging Products
  • Embedded Flash Drives

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