Template:Comparison of memory cards

Comparison of technical features of MMC and SD card variants

Type	MMC	RS-MMC	MMCplus	MMCmobile	SecureMMC	SDIO	SD	miniSD	microSD
SD Socket	Yes	Extender	Yes	Extender	Yes	Yes	Yes	Adapter	Adapter
Pins	7	7	13	13	7	9	9	11	8
Width	24 mm	24 mm	24 mm	24 mm	24 mm	24 mm	24 mm	20 mm	11 mm
Length	32 mm	18 mm	32 mm	18 mm	32 mm	32 mm+	32 mm	21.5 mm	15 mm
Thickness	1.4 mm	1.4 mm	1.4 mm	1.4 mm	1.4 mm	2.1 mm	2.1 mm (most) 1.4 mm (rare)	1.4 mm	1 mm
1-bit SPI bus mode	Optional	Optional	Optional	Optional	Yes	Yes	Yes	Yes	Yes
Max SPI bus clock	20 MHz	20 MHz	52 MHz	52 MHz	20 MHz	50 MHz	25 MHz	50 MHz	50 MHz
1-bit MMC/SD bus mode	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
4-bit MMC/SD bus mode	No	No	Yes	Yes	No	Optional	Yes	Yes	Yes
8-bit MMC bus mode	No	No	Yes	Yes	No	No	No	No	No
DDR mode	No	No	Yes	Yes	Unknown	Unknown	Unknown	Unknown	Unknown
Max MMC/SD bus clock	20 MHz	20 MHz	52 MHz	52 MHz	20 MHz?	50 MHz	208 MHz	208 MHz	208 MHz
Max MMC/SD transfer rate	20 Mbit/s	20 Mbit/s	832 Mbit/s	832 Mbit/s	20 Mbit/s?	200 Mbit/s	832 Mbit/s	832 Mbit/s	832 Mbit/s
Interrupts	No	No	No	No	No	Optional	No	No	No
DRM	No	No	No	No	Yes	N/A	Yes	Yes	Yes
User encrypt	No	No	No	No	Yes	No	No	No	No
Simplified spec.	Yes	Yes	No	No	Unknown	Yes	Yes	No	No
Membership cost	JEDEC: US$4,400/yr, optional					SD Card Association: US$2,000/year, general; US$4,500/year, executive.
Specification cost	Free				Unknown	Simplified: free. Full: membership, or US$1,000/year to R&D non-members.
Host license	No	No	No	No	No	US$1,000/year, excepting SPI-mode only use.
Card royalties	Yes	Yes	Yes	Yes	Yes	Yes, US$1,000/year	Yes	Yes	Yes
Open source compatible	Yes	Yes	Unknown	Unknown	Unknown	Yes	Yes	Yes	Yes
Nominal voltage	3.3 V	3.3 V	3.3 V	1.8 V/3.3 V	1.8 V/3.3 V	3.3 V	3.3 V (SDSC), 1.8/3.3 V (SDHC & SDXC)	3.3 V (miniSD), 1.8/3.3 V (miniSDHC)	3.3 V (SDSC), 1.8/3.3 V (microSDHC & microSDXC)
Max capacity	128 GB	2 GB	128 GB?	2 GB	128 GB?	?	2 GB (SD), 32 GB (SDHC), 2 TB (SDXC)	2 GB (miniSD), 16 GB (miniSDHC)	2 GB (microSD), 32 GB (microSDHC), 512 GB (microSDXC)
Type	MMC	RS-MMC	MMCplus	MMCmobile	SecureMMC	SDIO	SD	miniSD	microSD

• Table data compiled from MMC, SD, and SDIO specifications from SD Association and JEDEC web sites. Data for other card variations are interpolated.

References

These references will appear in the article, but this list appears only on this page.