Delkin Blog

What Are Secure Digital Card Specifications?

SE16ANZ49-1B000-3 - SD - SD - 16GB - MLC | Delkin Industrial

 

Secure Digital cards, or SD cards, are a specific type of non-volatile storage that was developed by the Secure Digital Association, or SDA. SD cards are manufactured by a number of different companies, but the SDA issues strict guidelines that dictate the features that the cards must have and how they must be designed and constructed. Secure Digital card specifications exist to ensure that OEMs and developers who use SD cards in their devices know exactly what they are getting and experience seamless compatibility with all of their SD cards, regardless of who actually made them.

 

SDA and Secure Digital Card Specification Rules

In order to have full access to all of the rules associated with manufacturing SD cards, companies must join the SDA, and there are over 1,000 companies who are members of the SDA. There is a membership fee required, as well as paperwork for licensing purposes. Before you can access any SDA intellectual property for licensing or the full SD card specifications, you must execute a membership agreement that is accepted by the SDA.

 

Although the full version of the card specifications is only available to members, there is a version of the specifications called the SD Simplified Specifications. These are simplified versions of some of the rules for making SD cards that are available without membership in the SDA.

 

Secure Digital Card Simplified Specification Usage

SD card simplified specifications cover specs for certain SD card parts. These are the simplified specifications that are available:

  • Physical layer simplified specification
  • UHS-II simplified addendum
  • NFC interface simplified addendum
  • ASSD extension simplified specification
  • SD host controller simplified specification
  • SD extensions API simplified specification
  • SDIO simplified specification
  • SDIO Bluetooth type A simplified specification
  • iSDIO simplified specification
  • Wireless LAN simplified addendum

 

Although these specifications are available to non-SDA members, they are not intended to be implemented by non-members without the appropriate licensing or memberships. As they are only portions of the full SD card specifications, they are not sufficient to allow SD card manufacturing.

 

Trust Delkin for SD cards designed precisely in accordance with Secure Digital Association specifications. For more information, speak to a Delkin team member today.

 

Contact

  • This field is for validation purposes and should be left unchanged.

Related Posts

What Are Industrial Applications?

  Electronic applications are designed to be used by a wide array of people and...

Delkin Devices at Embedded World | Feb. 25-27 in Nuremberg, Germany

  Discover the newest in Industrial Flash Storage Solutions by meeting with Delkin Devices at...

Industrial microSD Flash Storage Used in Security Control and Lighting Systems

  Like most parts of modern life, security and lighting systems have gone high-tech. Whether...

Delkin Technology Flash Endurance
Delkin’s Rugged Storage Fits the Bill for Nanosatellites

  If you think that your application requires rugged storage devices, imagine how reliable an...

Collaboration- Putting together pieces of the puzzle
Technical Success Story: The Value of SD Card Customization

  One of the reasons why so many of Delkin’s clients are repeat customers is...

Embedded OS: Windows vs. Linux

    The August 2019 announcement by Microsoft that they would no longer be supporting Windows...

Write Amplification in True Embedded Applications

  What is write amplification? Write amplification, or WA, refers to the phenomenon that occurs in...

S325TLLM7B-C1000-3 - SD - microSD - 256MB - SLC
SMART microSD Cards Explained

  The trends in tech design are pushing in two seemingly incongruent directions: devices are...

Delkin Devices Industrial USB Flash Drive
High Capacity Flash Drive FAQs

  With solid state drives (SSDs) dominating the market for embedded storage and external hard...

What Is an M.2 SSD?

  Solid state drives, or SSDs, have changed the way that designers and engineers think...