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The MultiMediaCard Association (MMCA) and the JEDEC Solid State Technology Association (JEDEC) have announced their joint publication of version 4.3 of the Embedded MMC (eMMC) and Card Product Standard. The specification provides a standardised protocol for embedding mass storage flash memory on host systems. The new features are build on the eMMC standard which is currently supported by all handset and navigation product manufacturers.The enhanced specification includes two new features for embedded memory applications, power-on boot and explicit sleep mode, which provides benefits for the end-user. Power-on boot defines a way for the boot-code to be accessed by the host controller without an upper-level software driver, speeding the time it takes for a controller to access the boot code. Explicit sleep mode enables the host controller to directly instruct eMMC to enter power-saving sleep mode - an enhancement that has an immediate positive impact on power efficiency.The eMMC standard simplifies embedding mass storage flash memory on host systems. The standardised protocol interface offers designers high performance, while keeping complex functional differences among NAND flash suppliers invisible to the host.