Product manual

3-14 SanDisk miniSD Card Product Manual, Rev. 1.1 © 2003 SANDISK CORPORATION
Name Field Width Cell
Type
CSD-Slice CSD Value CSD Code
SD064=45 mA
SD032=35 mA
SD016=35 mA
SD064=101b
SD032=100b
SD016=100b
Max. Write current @VDD min VDD_W_CURR_MIN 3 R [55:53] SD256=35 mA
SD128=35 mA
SD064=35 mA
SD032=25 mA
SD016=25 mA
SD256=101b
SD128=101b
SD064=101b
SD032=100b
SD016=100b
Max. Write current @VDD max VDD_W_CURR_MAX 3 R [52:50] SD256=45 mA
SD128=45 mA
SD064=45 mA
SD032=35 mA
SD016=35 mA
SD256=101b
SD128=101b
SD064=101b
SD032=100b
SD016=100b
Device size multiplier C_SIZE_MULT 3 R [49:47] SD256=5
SD128=4
SD064=3
SD032=3
SD016=3
101b 100b
011b 011b
011b
Erase single block enable ERASE_BLK_EN 1 R [46:46] Yes 1b
Erase sector size SECTOR_SIZE 7 R [45:39] 32blocks 0011111b
Write protect group size WP_GRP_SIZE 7 R [38:32] 128sectors 1111111b
Write protect group enable WP_GRP_ENABLE 1 R [31:31] Yes 1b
Reserved for MultiMediaCard compatibility 2 R [30:29] - 00b
Write speed factor R2W_FACTOR 3 R [28:26] X16 100b
Max. Write data block length WRITE_BL_LEN 4 R [25:22] 512Byte 1001b
Partial blocks for write allowed WRITE_BL_PARTIAL 1 R [21:21] No 0
Reserved - 5 R [20:16] - 00000b
File format group FILE_FORMAT_GRP 1 R/W(1
)
[15:15] 0 0b
Copy flag (OTP) COPY 1 R/W(1
)
[14:14] Not Original 1b
Permanent write protection PERM_WRITE_PROTECT 1 R/W(1
)
[13:13] Not Protected 0b
Temporary write protection TMP_WRITE_PROTECT 1 R/W [12:12] Not Protected 0b
File format FILE_FORMAT 2 R/W(1
)
[11:10] HD w/partition 00b
Reserved 2 R/W [9:8] - 00b
CRC CRC 7 R/W [7:1] - CRC7
Not used, always “1” - 1 - [0:0] - 1b
NOTE: The device size indicates the user area size. It does not include the protected area that is used for security applications
and is about 1 percent of the total card size.
The following sections describe the CSD fields and the relevant data types. If not explicitly defined otherwise, all
bit strings are interpreted as binary coded numbers starting with the left bit first.
CSD_STRUCTURE—describes the version of the CSD structure.