Revision 2.2
SanDisk SD Card Product Manual
© 2004 SanDisk Corporation
ii
TABLE OF CONTENTS
1. Introduction...................................................................................................1-1
1.1 General Description................................................................................1-1
1.2 Features...................................................................................................1-2
1.3 SD Card Standard ...................................................................................1-2
1.4 Functional Description............................................................................1-3
1.5 Independent Flash Technology ...............................................................1-3
1.6 Defect and Error Management................................................................1-3
1.7 Copyright Protection...............................................................................1-4
1.8 Endurance ...............................................................................................1-4
1.9 Wear Leveling.........................................................................................1-4
1.10 Automatic Sleep Mode ..........................................................................1-4
1.11 Hot Insertion ..........................................................................................1-5
1.12 SD Card—SD Bus Mode.......................................................................1-5
1.13 SPI Mode ...............................................................................................1-9
2. Product Specifications...................................................................................2-1
2.1 Overview ................................................................................................2-1
2.2 System Environmental Specifications ....................................................2-1
2.3 Reliability and Durability .......................................................................2-1
2.4 Typical Card Power Requirements .........................................................2-2
2.5 System Performance ...............................................................................2-2
2.6 System Reliability and Maintenance ......................................................2-2
2.7 Physical Specifications ...........................................................................2-3
2.8 Capacity Specifications ..........................................................................2-5
3. SD Card Interface Description ......................................................................3-1
3.1 General Description of Pins and Registers .............................................3-1
3.2 SD Bus Topology....................................................................................3-3
3.3 SPI Bus Topology ...................................................................................3-5
3.4 Electrical Interface..................................................................................3-6
3.5 SD Card Registers ................................................................................3-11
3.6 Data Interchange Format and Card Sizes..............................................3-23
4. SD Card Protocol Description.......................................................................4-1
4.1 SD Bus Protocol .....................................................................................4-1
4.2 Functional Description............................................................................4-4
4.3 Card Identification Mode........................................................................4-4
4.4 Data Transfer Mode ................................................................................4-7
4.5 Clock Control .......................................................................................4-26
4.6 Cyclic Redundancy Codes....................................................................4-27
4.7 Error Conditions ...................................................................................4-28
4.8 Commands............................................................................................4-29
4.9 Card State Transition ............................................................................4-37
4.10 Timing Diagrams .................................................................................4-41
4.11 Data Read.............................................................................................4-42
4.12 Data Write............................................................................................4-43
4.13 Timing Values ......................................................................................4-45
5. SPI Protocol ..................................................................................................5-1
5.1 SPI Bus Protocol.....................................................................................5-1
5.2 Mode Selection .......................................................................................5-1
5.3 Bus Transfer Protection ..........................................................................5-2
5.4 Data Read ...............................................................................................5-2
