Datasheet

T
T
T
S
S
S
2
2
2
G
G
G
~
~
~
1
1
1
6
6
6
G
G
G
C
C
C
F
F
F
X
X
X
5
5
5
0
0
0
0
0
0
CFast Card
Transcend Information Inc.
V0.5
21
SECURITY UNLOCK (F2h)
This command disables LOCKED MODE of the device. This command transfers 512 bytes of data from the host with PIO
data-out protocol. The following table defines the content of this information.
Security Unlock information
Word Content
0 Control word
Bit 0
Bits 1-15
Identifier
Reserved
0=compare user password
1=compare master password
1-16 Password (32 bytes)
17-255 Reserved
SECURITY DISABLE PASSWORD (F6h)
Disables any previously set user password and cancels the lock. The host transfers 512 bytes of data, as shown in the
following table, to the drive. The transferred data contains a user or master password, which the drive compares with the
saved password. If they match, the drive cancels the lock. The master password is still saved. It is re-enabled by issuing
the SECURITY SET PASSWORD command to re-set a user password.
SECURITY ERASE PREPARE (F3h)
This command shall be issued immediately before the Security Erase Unit command to enable erasing and unlocking.
This command prevents accidental loss of data on the drive.
SECURITY ERASE UNIT (F4h)
The host uses this command to transfer 512 bytes of data, as shown in the following table, to the drive. The
transferred data contains a user or master password, which the drive compares with the saved password. If they match,
the drive deletes user data, disables the user password, and cancels the lock. The master password is still saved. It is
re-enabled by issuing the SECURITY SET PASSWORD command to re-set a user password.
SECURITY FREEZE LOCK (F5h)
Causes the drive to enter Frozen mode. Once this command has been executed, the following commands to update
a lock result in the Aborted Command error:
• SECURITY SET PASSWORD
• SECURITY UNLOCK
• SECURITY DISABLE PASSWORD
• SECURITY ERASE PREPARE
• SECURITY ERASE UNIT