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secure digital exended capacity (SDXC)

With the SDXC card, which stands for Secure Digital Extended Capacity, the SD Association( SDA) has established a standard for memory cards with storage capacities of up to several terabytes.

A standard SD card has storage capacities of up to 2 GB, while the Secure Digital Card High Capacity( SDHC) has storage capacities of up to 32 GB. Higher storage capacities from 64 GB up to 2 TB are offered by SDXC cards.

The write speeds are divided into speed classes of 2, 4, 6, 8 and 10 MB/s. To ensure that the enormous storage capacity of the SDXC card can be accessed, it is equipped with a UHS bus on which data rates of 104 MB/s and 312 MB/s are realized. The UHS bus increases the write speeds to 10 MB/s and 30 MB/s, provided that the UHS concept is supported by both devices. As a file system, the SDXC card no longer uses FAT32, but Extended File Allocation Table( exFAT) with a 64-bit address space.

Specifications on an SDXC card

Specifications on an SDXC card

The SDXC card is also available in a smaller form as a microSDXC card with dimensions of 11 x 15 mm. It was developed especially for small handy devices and has a storage capacity of 32 GB in contrast to the SDXC card. The microSDXC card have the same shape and size as the microSD card, with which it is backwards compatible.

Englisch: secure digital exended capacity - SDXC
Updated at: 15.03.2016
#Words: 222
Links: send data (modem) (SD), static data authentication (SDA), standard (STD), memory, gigabyte (GB)
Translations: DE

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