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eMMC (embedded MMC) is a small MMC chip used as embedded non-volatile memory that is normally soldered on printed circuit boards, though pluggable eMMC modules are used on some devices (e.g. Orange Pi and ODROID).
At the end of the hardware initialization, the boot ROM will try to load a bootloader from external peripheral(s) (such as a hard disk drive or solid-state drive, an eMMC or eUFS card, a microSD card, an external EEPROM, and so on) or through specific protocol(s) on a communications port (such as a serial port or Ethernet, etc.).
The Unisites featured 512K of user RAM, standard. Field-installable upgrade kits, consisting of a separate memory board, an appropriate number of 30-pin SIMMs, a mounting bracket, and interconnecting cable, were made available to upgrade these early units to 1MB or 8MB. The price for the 8MB upgrade kit was around $495 in the mid-1990s.
See also References External links A Accelerated Graphics Port (AGP) A dedicated video bus standard introduced by INTEL enabling 3D graphics capabilities; commonly present on an AGP slot on the motherboard. (Presently a historical expansion card standard, designed for attaching a video card to a computer's motherboard (and considered high-speed at launch, one of the last off-chip parallel ...
Many ASICs are pad-limited, meaning that the size of the die is constrained by the number of wire bond pads, rather than the complexity and number of gates used for the device logic. Eliminating bond pads thus permits a more compact integrated circuit, on a smaller die; this increases the number of dies that may be fabricated on a wafer , and ...
16 GB eMMC Flash Android Lollipop 5.0; upgradable to Android Marshmallow 6.0 Asus Zenfone 2E (Z00D) Intel Atom Z2560 (1.6 GHz, dual-core) x86 2 GB LPDDR2 RAM PowerVR SGX544MP2 5 inches, HD 1280×720, IPS Corning Gorilla Glass 3 2 MP front 8 MP rear 8 GB eMMC Flash Android Lollipop 5.0; upgradable to Android Marshmallow 6.0
High-speed signals support devices up to 200 MHz and the latest eMMC HS400 modes with data transfer rates of 2.5 nanoseconds per byte. In the context of installing firmware onto a device, a programmer , device programmer , chip programmer , device burner , [ 1 ] : 364 or PROM writer [ 2 ] is a device that writes, a.k.a. burns, firmware to a ...
The term over-the-air update applies specifically to embedded systems, [4] rather than non-embedded systems like computers. Before OTA updates, embedded devices could only be flashed through direct physical access (with a JTAG) or wired connections (usually through USB or a serial port).