The PCIe protocol could in the future replace the UHS bus.
The SD Association (SDA) is the body in charge of developing standards for storage devices such as Secure Digital (SD) memory card or SD card. It is expected to officially announce the new Secure Digital 7.0 standard by the end of this month, probably at the MWC (Mobile World Congress) to be held this year in Shanghai from June 26 to June 28.

As a reminder, flash memory commercialized in SD format was born in 2000 thanks to the concerted efforts of technological companies Panasonic, SanDisk and Toshiba. This type of memory and its derivatives (microSD, miniSD ...) are today associated with a very wide variety of equipment (automotive GPS, digital cameras, tablets, speakers, embedded systems, smartphones, etc.) and are basically used as removable storage.

It should also be noted that the architecture of SD cards is based on SLC (Single Layer Cell) NAND flash memory circuits for the design of high performance SD memory cards or NAND MLC (Multi Layer Cell) for the design of SD memory cards. high capacity. All of these storage devices support encryption and incorporate a copyright protection mechanism through the Secure Digital Music Initiative (SDMI) standard.
The SD 7.0 standard should allow the introduction of the PCI express protocol (PCIe), a standard developed by Intel and introduced in 2004 that specifies a serial local bus and a connector for expansion devices, for SD cards instead buses (UHS I, II or III) currently operated. This new standard promises to significantly increase the performance of future SD memory cards.

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