SLCF2GM2TU-S STEC, SLCF2GM2TU-S Datasheet - Page 59

• Manufacturer Part Number: SLCF2GM2TU-S
• Manufacturer: STEC

Specifications of SLCF2GM2TU-S

• Lead Free Status / Rohs Status: Compliant

SLCFxxxM2TU(I)(-x)
Datasheet
8.0 Security Mode Feature Set
Note: Part Numbers with -S support the Security Mode feature set.
The Security Mode feature set allows the host to set and use a security password system to prevent
unauthorized CF Card access.
After the initial setting of the User Password, the card enters Lock mode on the next power-up or
hardware reset. When card is in Lock mode the card rejects access commands until a SECURITY
UNLOCK command is invoked.
To prevent accidental or malicious password activation or setting, it is recommended that the host issue a
SECURITY FREEZE LOCK command on initialization. This command places the card in Frozen mode
which disables the following commands until a power off or hardware reset:
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If SECURITY FREEZE LOCK is issued when card is already in Frozen mode, the command executes and
card remains in Frozen mode.
When the passwords are set, the Security Level parameter may be set to High or Maximum. If the User
Password is forgotten, the Master Password can be used to unlock the card only if the Security Level has
been set to High. If the Security Level was set at Maximum and the User Password is forgotten, data on
the card is lost and only a SECURITY ERASE UNIT command can be invoke (along with the Master
Password) to recover use of the card.
During a power up session, the card keeps security count of failed User and Master Password SECRUITY
UNLOCK commands. After 5 failed attempts, the Expire bit 4 of Word 128 in IDENTIFY DRIVE
information is set and SECURITY UNLOCK and SECURITY ERASE UNIT commands are aborted until
power down or hardware reset.
8.1
When Security Mode feature set is implemented, the IDENTIFY DRIVE Command returns the following
information for Word 128:
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Word 128 bit 0 shall be set to ―1‖ to configure the card for Security feature set support.
Word 128 bit 5 shall be cleared to ―0‖ to indicate that Enhanced Security Erase feature set is not supported.
Word 128 bit 1 shall be cleared to ―0‖ at first use turning off (disabling) security in until a SECURITY SET
PASSWORD command is issued by host.
Word 128 bit 2 shall be cleared to ―0‖ at first use to indicate card is not locked until a SECURITY SET
PASSWORD command is issued by host.
Word 128 bit 3 shall be cleared to ―0‖ at power up or hardware reset to indicate card is not frozen. If a SECURITY
FREEZE LOCK is issued when card is already frozen, Word 128 bit 4 shall be set to―1‖ even at power up or
hardware reset to indicate CF card is frozen.
Word 128 bit 4 shall be cleared to ―0‖ at power up or hardware reset to indicate security count is not expired.
Word 128 bit 8 shall be cleared to ―0‖ at first use to indicate a high security level until changed by a SECURITY
SET PASSWORD command.
Security Set Password
Security Unlock
Security Disable Password
Security Erase Unit
Security Mode Feature Set Support and Identify Command
61000-07000-104, April 2011
CompactFlash Card
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