Specifications
©Copyright 2001-2013 SD Group (Panasonic, SanDisk, Toshiba) and SD Card Association
Physical Layer Simplified Specification Version 4.10
23
3.10.5 Summary of Bus Speed Mode for UHS-II Card
*1: The card supports a UHS-I mode shall support all lower UHS-I modes.
*2: Host may control card power by the Power Limit Function of CMD6
*3: SDSC stands for SD Standard Capacity Memory Card.
*4: SDHC stands for SD High Capacity Memory Card.
*5: SDXC stands for SD Extended Capacity Memory Card.
*6: The actual maximum current may vary from the limit described in this table. It is limited by the
Mechanical Addenda in the sections that define the thermal profile of the device and the connector
profile.
*7: Host may select either card power by XPC in ACMD41.
In SPI mode, XPC is not supported and the power shall be up to 0.36W (3.6V 100mA).
*8: Minimum power requirement of host in UHS-II mode is 0.72W and it is applied from PHY
Initialization.
Table 3-9 : Bus Speed Modes of UHS-II Card
Table 3-10 shows Card Types and Supported Bus Speed Modes.
It is recommended that UHS-II hosts implement the UHS-I mode (at least SDR50) to provide backward
compatibility with UHS-I cards.
Table 3-10 : Bus Speed Mode Option / Mandatory
UHS-II I/F
*8
SD Bus I/F
M
N/A
N/A
N/A
M
N/A
N/A
N/A
N/A
FD156
OO (Standard SD)
M (microSD)
OM
MMMUHS156
N/AO (Standard SD)
M (microSD)
M
MMMMUHS104
N/AO (Standard SD)
M (microSD)
N/AMMMMUHS50
N/AN/AN/AN/A
OMMNon UHSSDXC
OO (Standard SD)
M (microSD)
OMMM
MUHS156
N/AO (Standard SD)
M (microSD
)
M
MMMM
UHS104
N/AO (Standard SD)
M (
microSD)
N/A
MMMMUHS50
N/AN/AN/A
N/AOMM
Non UHSSDHC
N/AN/A
N/AN/AOMM
SDSC
HD312DDR50SDR104
SDR50HSDS
SPICard Classification
M
N/A
N/A
N/A
M
N/A
N/A
N/A
N/A
FD156
OO (Standard SD)
M (microSD)
OMMMMUHS156
N/AO (Standard SD)
M (microSD)
MMMMMUHS104
N/AO (Standard SD)
M (microSD)
N/AMMMM
UHS50
N/AN/AN/A
N/AOMMNon UHS
SDXC
OO (Standard SD)
M (microSD
)
O
MMMMUHS156
N/AO (Standard SD)
M (microSD)
MMMM
MUHS104
N/AO (Standard SD)
M (
microSD)
N/AMMMM
UHS50
N/AN/A
N/AN/AO
MMNon UHSSDHC
N/A
N/AN/AN/AO
MMSDSC
HD312
DDR50SDR104SDR50HSDS
SPICard Classification
Bus Speed
Mode
*1
Max. Bus
Speed
Max. Clock
Frequency
Signal
Voltage
Max. Power
*2
[W]
[MB/s] [MHz] [V]
SDSC
*3
SDHC
*4
SDXC
*5
HD312
312 52 0.4 - 2.88
*6
2.88
*6
FD156 156
52
0.4 - 2.88
*6
2.88
*6
SDR104 104 208 1.8
-
2.88
*6
2.88
*6
SDR50 50 100 1.8 -
1.44
1.44
DDR50 50 50 1.8 - 1.44
1.44
SDR25
25
50 1.8
-
0.72 0.72
SDR12 12.5 25 1.8
-
0.36 0.36/0.54
*7
High Speed
25
50 3.3 0.72 0.72
0.72
Default Speed
12.5 25
3.3
0.36 0.36 0.36
/0.54
*7
Bus Speed
Mode
*1
Max. Bus
Speed
Max. Clock
Frequency
Signal
Voltage
Max. Power
*2
[W]
[MB/s] [MHz] [V]
SDSC
*3
SDHC
*4
SDXC
*5
HD312 312 52 0.4 - 2.88
*6
2.88
*6
FD156
156
52
0.4 - 2.88
*6
2.88
*6
SDR104 104 208 1.8
-
2.88
*6
2.88
*6
SDR50 50
100 1.8
-
1.44 1.44
DDR50
50 50
1.8 -
1.44
1.44
SDR25 25 50
1.8
-
0.72
0.72
SDR12 12.5
25
1.8
- 0.36
0.36/0.54
*7
High Speed 25 50
3.3 0.72
0.72 0.72
Default Speed 12.5
25 3.3 0.36
0.36
0.36/0.54
*7