Product manual

Introduction to the Industrial Grade SD Card
1-8 SanDisk Industrial Grade SD Product Manual, Rev. 1.0 © 2003 SANDISK CORPORATION
SD Memory Card
WP Group 1
WP Group 0
Block
n
Sector 1
Block
2
Block
1
Block
0
Sector 2
Sector 3
Sector n
WP Group n
Protected Area (Copyright protection)
Block
n
Sector 1
Block
2
Block
1
Block
0
Sector n
Figure 1-2. Memory Array Partitioning
Table 1-3. Memory Array Structures Summary
Part Number Block Size
(Byte)
Data Area + Protected size
(Blocks)
Protected Area size
(Blocks)
User Area
(Blocks)
SDSDB-1024 512 2,004,224 20,480 1,983,744
SDSDB-512 512 1,001,104 10,240 940,864
SDSDB-256 512 499,456 5,376 494,080
SDSDB-128 512 248,640 2,624 246,016
SDSDB-64 512 123,232 1,376 121,856
SDSDB-32 512 60,512 736 59,776
NOTE: All measurements are in units per card.
Protected Area—The part of the Card that relates to the secured copyright management and has separate DOS
partitioning including sectors and blocks. The card write protection mechanism does not effect this area.