Delkin Blog

Secure Digital (SD) cards are a form of flash memory. They are used in devices ranging from digital cameras to in-flight entertainment systems on airplanes. There are multiple grades of SD cards that are designed for use in different kinds of applications. Industrial grade SD is intended for use in industrial applications, such as devices used in transportation, gaming, communications, and automation. Although all SD cards are designed according to the technical specifications set by the Secure Digital Association, industrial grade SD has some unique characteristics that set it apart from other forms of SD memory. Here is a closer look at some of the differences.

SLC Flash Technology

SLC stands for single-level cell. With this kind of flash technology, each cell stores one bit of data. SLC flash technology is found in industrial grade SD for a few reasons. One is that storing one bit of data per cell makes the memory as reliable and secure as possible. There is a lower risk of data loss occurring during programming, as well as a lower risk of crosstalk between cells that can corrupt data. Another reason is that SLC flash is the fastest form of flash memory available. SLC flash also helps to extend the life of industrial grade SD cards.

Industrial Temperature Range

Many industrial devices are used in environments with extreme temperatures or in which temperatures fluctuate wildly. Commercial or consumer grade SD cards are not designed to withstand these kinds of temperatures. Industrial SD cards, on the other hand, can tolerate temperatures from -40 degrees C up to 85 degrees C without loss of functionality and without negative effects on the lifespan of the memory card.

Advanced Wear Leveling

In order for flash memory to be effective, the cells have to be used as efficiently as possible. Advanced wear leveling algorithms ensure that this is the case. With advanced wear leveling, blocks of cells are written and read evenly, so that the programmable cycles are spread out across the cells. This feature of industrial grade SD cards ensures that the memory has the longest life possible.

Delkin is here to answer your questions about industrial grade SD and embedded storage solutions. Contact us today for more information.

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