---
title: "eMMC - NAND Flash Memory and Integrated Controller - EXALAB"
description: "eMMC is a standard combining NAND flash memory and a controller in a single chip, used in mid-range and low-end mobile phones and tablets."
url: "https://www.exalab.cz/en/glossary/emmc-nand-flash-memory-and-integrated-controller"
date: "2026-06-19T23:11:47+00:00"
language: "en-GB"
---

##  eMMC - NAND Flash Memory and Integrated Controller

eMMC is a standard that combines NAND flash memory and a controller into a single chip, reducing overall device manufacturing costs. It uses an 8-bit interface with one data channel, limiting read and write speeds. eMMC supports only one read or write operation at a time (half-duplex). Typical read and write speeds of eMMC range from 100-250 MB/s. eMMC chips are commonly used in mid-range and low-end mobile phones, tablets, and other similar applications (embedded systems). eMMC is mainly found in devices where higher performance is not a priority. The current eMMC standard is v. 5.1.

eMMC history began with the development of the MultiMediaCard (MMC) standard in 1997. MMC was developed by SanDisk in collaboration with Siemens AG (now known as Infineon Technologies) as a universal memory card format for digital devices. eMMC, as an evolution of the MMC standard, was developed by JEDEC (Joint Electron Device Engineering Council), an organization that develops and maintains technical standards for the semiconductor industry. JEDEC united various entities and manufacturers from the entire industry to collectively create and refine the eMMC standard.

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eMMC is designed to be compatible with the MMC standard and provide the benefits of integrating NAND flash memory and a controller into a single chip, simplifying device design and manufacturing.

The following overview shows some of the key eMMC versions and their main features:

eMMC 4.3:

- Improved performance due to faster interface (maximum data transfer speed of 104 MB/s).
- Enhanced reliability and power management efficiency.
- Introduction of new features, such as secure erase and Secure Write Protection.

 eMMC 4.4:

- Support for new types of NAND flash memory.
- Enhanced reliability and power management efficiency.

 eMMC 4.5:

- Increased data transfer speed (maximum data transfer speed of 200 MB/s).
- Enhanced reliability and power management efficiency.
- Support for new types of NAND flash memory.

 eMMC 5.0:

- Increased data transfer speed (maximum data transfer speed of 400 MB/s).
- Enhanced reliability and power management efficiency.
- Support for new types of NAND flash memory.

 eMMC 5.1:

- Increased data transfer speed (maximum data transfer speed of 600 MB/s).
- Enhanced reliability and power management efficiency.
- Support for new types of NAND flash memory.
- Introduction of new features, such as Command Queue, which allows processing multiple commands at once and improves performance.

eMMC 5.1 is the latest and fastest version of the eMMC standard. Currently, UFS (Universal Flash Storage) is increasingly used in mobile devices and embedded systems, a more modern standard for NAND flash memory with higher data transfer speeds and better features, gradually replacing eMMC in devices where higher performance is a priority.

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