Detailed knowledge about SD Cards

SD Card is the general definition of memory cards; mini SD, bulk Micro SD Card, SD Card and SDIO card is all following the specification of SD. Now the most popular memory card is wholesale Micro SD Card, which can support dash cam, GPS, Drone and Game players.

The different between SD card and MMC is initialization process. The communication protocol of SD card includes SD bus and SPI.

Brief introduction
SD card is a memory card base on flash.
The different between SD card and MMC is initialization process.
The communication protocol of SD card includes SD bus and SPI.
SD card implements FLASH operation control, including protocol, safety algorithm, data access, ECC algorithm, defect handing and analysis, power management and clock management, through card intelligent control module.
Communication voltage range:2.0-3.6V; operating voltage range: 2.0-3.6V
Maximum read-write speed:10Mbyte/s
Maximum stack of ten cards(20MHz,Vcc=2.7-3.6V)

How much difference in speed between SD cards twice as expensive as the others

The article introduce that there is a performance differences of the memory cards at different class or even same class by testing the performance of Class 10 products under USB 2.0 and USB 3.0 interfaces. Different classes are suitable for different consumers. Performance, capacity and price should be considered when choosing them. In addition, UHS-1 products can provide more performance for users with higher demand.

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