Template:MultiMediaCard comparison

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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
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 416 Mbit/s 416 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 Not yet? 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 ? Simplified spec: Free. Full spec: Free to members, US$1,000/year to R&D non-members
Host license No No No No No Yes, US$1,000/year. No, if using SPI-mode only.
Card royalties Yes Yes Yes Yes Yes Yes, US$1,000/year Yes Yes Yes
Open source compatible Yes Yes Yes? Yes? Yes? Yes Yes Yes Yes
Nominal
operating voltage(s)
3.3 V 3.3 V 3.3 V[1][2] 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)
Maximum
available capacity
128 GB 2 GB 128 GB? 2 GB 128 GB?  ? 4 GB (SD)[citation needed],
32 GB (SDHC),
512 GB (SDXC)
4 GB[citation needed] (miniSD),
16 GB (miniSDHC)
4 GB[citation needed] (microSD),
32 GB (microSDHC),
128 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.
  1. ^ MMC 4.1 Specification (PDF), JEDEC, 2008, p. 7 .
  2. ^ MMC 4.0 spec does not support 1.8V (PDF), US: Transcend, 2009 .