SanDisk microSD

™, microSDHC™ and microSDXC™ cards

OEM Product Manual

2.6

July 2012 Version 2.6 © 2008 - 2012 SanDisk Corporation. SanDisk Confidential, subject to all applicable non-disclosure agreements

iii

T abl e of Co nte nts

1

Introduction.......................................................................................... 1

1.1 General Description ........................................................................ 1

1.2 Features........................................................................................ 2

1.3 Scope ........................................................................................... 2

1.4 SD Card Standard .......................................................................... 2

1.5 Functional Description..................................................................... 3

1.5.1 Technology Independence ..................................................... 3

1.5.2 Defect and Error Management ............................................... 3

1.5.3 Content Protection................................................................ 3

1.5.4 Wear Leveling...................................................................... 3

1.5.5 Automatic Sleep Mode .......................................................... 3

1.5.6 Hot Insertion ....................................................................... 4

1.6 microSD Card Products in SD Bus Mode ............................................ 4

1.7 SPI Mode....................................................................................... 6

2

Product Specifications ............................................................................ 7

2.1 microSD Card Product Family........................................................... 7

2.1.1 Typical Card Power Requirements........................................... 7

2.1.2 System Performance............................................................. 8

2.1.3 Reliability and Durability ....................................................... 9

2.1.4 Physical Specifications .......................................................... 9

3

Interface Description............................................................................ 10

3.1 Pins and Registers ........................................................................ 10

3.2 Bus Topology ............................................................................... 11

3.2.1 SD Bus ............................................................................. 11

3.2.2 SPI Bus............................................................................. 11

3.3 Hot Insertion and Power Protection ................................................. 11

3.4 Electrical Interface........................................................................ 11

3.4.1 Power Up .......................................................................... 11

3.4.2 Bus Operating Conditions .................................................... 12

3.4.3 Bus Timing ........................................................................ 12

3.5 microSD Card Product Family Registers ........................................... 12

3.5.1 Operation Conditions Register.............................................. 12

3.5.2 Card Identification Register ................................................. 12

3.5.3 Card Specific Data Register ................................................. 13

3.5.4 Card Status Register........................................................... 15

3.5.5 SD Status Register ............................................................. 16

3.5.6 Relative Card Address Register ............................................ 16

3.5.7 SD Card Configuration Register ............................................ 16

3.5.8 microSD Card Product Family Registers in SPI Mode ............... 16

3.5.9 Data Interchange Format and Card Sizes .............................. 16

4

microSD Card Protocol Description......................................................... 17

4.1 General Description ...................................................................... 17

4.2 SD Bus Protocol ........................................................................... 17

4.3 Functional Description................................................................... 17