Delkin Blog

Spotlight on the SD Card Interface

Thanks to simplified design requirements and a serial interface, SD cards are popular with OEMs in industrial applications. The SD Card interface follows strict guidelines, taking guesswork out of the process and ensuring smooth, reliable operations.

 

SD Card Interface Basics

SD Cards are used for NAND flash storage in applications that use the Secure Digital, or SD interface. The SD card interface is strictly controlled by the Secure Digital Association, which set very specific rules regarding the physical interface itself and command protocols. Generally, OEMs who are considering using SD cards should become members of the Secure Digital Association so that they have ongoing access to all of the specifications of the group. Some information about SD card interfaces is only available to members of the group, and many OEMs find it helpful to have access to the latest developments regarding the SD cards they incorporate into their applications.

 

SD Card Operations

SD cards have intelligent controllers. These controllers manage the flash operations and allow data transfer between the host system and the card. Typically, data are transferred in blocks of 512 bytes. SD cards that are 2 Gbytes or less use FAT12 or FAT16 for file storage. Cards over 4 Gbytes use FAT32. Industrial grade SD cards have a voltage range of 2.7-3.3V, though lower voltage cards are available for consumer electronic devices. SD cards default to SD mode, but it is also possible to configure cards to use SPI for applications that need a slower, simpler bus protocol.

 

Industrial SD Cards

Both industrial and consumer SD cards are available. Industrial SD cards use SLC NAND flash for increased data security in demanding operating environments. Data retention of up to 10 years is possible with an industrial grade SD card. These cards include SMART technology that monitors a card’s operations and flags potential issues before failures can occur. Customization options for SD cards include pad printing, unique formatting, laser etching, and custom labeling.

 

If you have further questions about the SD card interface or using SD cards for flash memory in your industrial application, Delkin’s product team is ready to help. Contact us with your questions or to request a sample.

 

Contact

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

Related Posts

Temperature Considerations for SSD- Hot Climate
The Benefits of Industrial Temperature for Industrial Applications

  Flash storage solutions come in two categories—commercial and industrial. These two product grades are...

Digital Gaming Applications
Industrial CompactFlash (CF) Cards: The Perfect Fit for Gaming Applications

  Behind the bright lights and ringing sounds of casinos are the flash storage cards...

A Case Study in Application Design That Considers Technological Advancements

  When designing state-of-the-art technological applications, designers and engineers are faced with a major challenge—creating...

Healthcare Industrial Flash Storage
Modernize Your Healthcare Data Storage with Industrial Flash

  The healthcare community relies heavily on tech for daily functions, from reading test results...

Delkin Industrial Application Lifecycle Management
Product Life Cycle Management FAQs

  When it comes to flash storage, developing a world-class application isn’t enough. Life cycle...

Person on laptop evaluating SMART data
Customer Success Story: Enhance Embedded Memory with SMART Cards

Flash storage offers a modernized opportunity to store and access data at a high...

Ruggedized SSDs- Technology for Industrial Users: What You Need to Know

  SSDs are so ubiquitous today that you may be surprised to learn that they...

Delkin Devices Technical Support: We’re Here to Help

  Delkin Devices is a global industrial Flash memory and storage provider with the best...

Power Fail
Understanding Power Failures in Flash Storage

  The Cost of Power Failures  For industrial applications, the cost of power failures can be...

Ruggedized SSDs- Technology for Industrial Users: What You Need to Know

  SSDs are so ubiquitous today that you may be surprised to learn that they...