Interface
(33) SECURITY UNLOCK (F2h)
This command cancels LOCKED MODE.
The host transfers the
∙When the master password is selected
When the security level in LOCKED MODE is high, the password is compared with the master password already set. If the passwords are the same, LOCKED MODE is canceled. Otherwise, the Aborted Command error is returned. If the security level in LOCKED MODE is set to the highest level, the Aborted Command error is always returned.
∙When the user password is selected
The password is compared with the user password already set. If the passwords are the same, LOCKED MODE is canceled. Otherwise, the Aborted Command error is returned.
If the password comparison fails, the device decrements the UNLOCK counter. The UNLOCK counter initially has a value of five. When the value of the UNLOCK counter reaches zero, this command or the SECURITY ERASE UNIT command causes the Aborted Command error until the device is turned off and then on, or until a hardware reset is executed. Issuing this command with LOCKED MODE canceled (in UNLOCK MODE) has no affect on the UNLOCK counter.
Issuing this command in FROZEN MODE returns the Aborted Command error.
At command issuance
1F7H(CM) | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 |
1F6H(DH) | × | × | × | DV | xx |
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1F5H(CH) | xx |
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1F4H(CL) | xx |
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1F3H(SN) | xx |
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1F2H(SC) | xx |
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1F1H(FR) | xx |
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