| This NAND flash tutorial covers recent trends, alternatives and even misconceptions regarding mobile handset storage subsystems that support multimedia features.
Higher resolution cameras, music, video and games are all driving the need for higher density, low cost data storage. NAND flash memory is excellent for high-density, low-cost and fast write speed data storage. As a result, the adoption of NAND in mobile phones continues to grow at an accelerated pace.
Within mobile phones, the use of NAND flash for improved data storage has grown in three areas:
- Multi-chip Packages (MCP) and Package-On-Package (POP)
- High-density embedded storage in addition to MCPs/POPs
- Card slots in handsets
The historical MCP solution for basic talk-only mobile phones was low-density random access memory (RAM) + NOR. This solution continues to be used today, driven primarily by low-end mobile phones targeting emerging markets. Multimedia phones, however, have adopted NAND based MCP solutions due to the density, cost and write performance advantages of NAND flash.
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