MD2433-D8G-V3Q18-X-P SanDisk, MD2433-D8G-V3Q18-X-P Datasheet - Page 23

• Manufacturer Part Number: MD2433-D8G-V3Q18-X-P
• Description: IC MDOC H1 8GB 115-FBGA
• Manufacturer: SanDisk

Specifications of MD2433-D8G-V3Q18-X-P

• Format - Memory: FLASH
• Memory Type: FLASH - Nand
• Memory Size: 8G (1G x 8)
• Speed: 64ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -30°C ~ 85°C
• Package / Case: 115-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.
3.1
mDOC H1 enables the user to define a partition that is protected (in hardware) against any
combination of read or write operations. The protected area can be configured as read protected or
write protected, and is protected by a protection key (i.e. password) defined by the user.
The size and protection attributes (protection key, read, write, changeable, lock) of the protected
partition are defined during the media formatting stage (DFORMAT utility or the format function in
the TrueFFS SDK).
In order to enable or disable read/write protection, the protection key (i.e., password) must be used,
as follows:
•
•
mDOC H1 has an additional hardware safety measure. If the Lock option is enabled (by means of
software) and the LOCK# signal is asserted, the protected partition has an additional hardware lock
that prevents read/write access to the partition, even with the use of the correct protection key. It is
possible to set the Lock protection for one session only; that is, until the next power-up or reset.
This Sticky Lock feature can be useful when the boot code in the boot partition must be read/write
protected. Upon power-up, the boot code must be unprotected so the CPU can run it directly from
mDOC H1. At the end of the boot process, protection can be set until the next power-up or reset.
Setting the Sticky Lock (SLOCK) bit in the Output Control register to 1 has the same effect as
asserting the LOCK# signal. Once set, SLOCK can only be cleared by asserting the RSTIN# input.
Like the LOCK# input, the assertion of this bit prevents the protection key from disabling the
protection for the partition. For more information, see Section 2.4.4
The only way to read from or write to a protected partition is to insert the key (even DFORMAT
cannot remove the protection without inserting the key first). This is also true for modifying its
attributes (protection key, read, write and lock). Read/write protection is reactivated (the key is
automatically removed) in each of the following events:
•
•
•
•
For further information on hardware protection, please refer to the TrueFFS Software Development
Kit (SDK) developer guide.
23
Insert the protection key to disable read/write protection.
Remove the protection key to enable read/write protection.
Power-down
Change of any protection attribute
Write operation to the IPL area
Removal of the protection key.
H
Method of Operation
ARDWARE
P
ROTECTION
Data Sheet, Rev. 1.1
mDOC H1 4Gb (512MByte) and 8Gb (1GByte)
95-DT-1104-01