MD8331-D2G-V18-X-P SanDisk, MD8331-D2G-V18-X-P Datasheet - Page 21

• Manufacturer Part Number: MD8331-D2G-V18-X-P
• Description: IC MDOC G4 2GB 69-FBGA
• Manufacturer: SanDisk

Specifications of MD8331-D2G-V18-X-P

• Format - Memory: FLASH
• Memory Type: FLASH - Nand
• Memory Size: 2G (256M x 8)
• Speed: 33ns
• Interface: Parallel
• Voltage - Supply: 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 69-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 585-1150-2; MD8831-D2G-V18-X-P; MD8832-D2G-V18-X-P

is used for hardware write/read protection, and the IF_CFG signal is used to configure 8/16-bit
access.
3.4
The Protection and Security-Enabling block, consisting of read/write protection, UID and an OTP
area, enables advanced data and code security and content protection. Located on the main route of
traffic between the host and the flash, this block monitors and controls all data and code transactions
to and from DiskOnChip G4.
3.4.1
Data and code protection is implemented through a Protection State Machine (PSM). The user can
configure one or two independently programmable areas of the flash memory as read protected,
write protected, or read/write protected.
A protected partition may be protected by either/both of these hardware mechanisms:
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.
The size and protection attributes of the protected partition are defined during the media-formatting
stage.
In the event of an attempt to bypass the protection mechanism, illegally modify the protection key
or in any way sabotage the configuration parameters, the entire DiskOnChip G4 becomes both read
and write protected, and is completely inaccessible.
For further information on hardware protection, please refer to the TrueFFS Software Development
Kit (SDK) developer guide.
3.4.2
Each DiskOnChip G4 is assigned a 16-byte UID number. Burned onto the flash during production,
the UID cannot be altered and is unique worldwide. The UID is essential in security-related
applications, and can be used to identify end-user products in order to fight fraudulent duplication
by imitators.
3.4.3
The 16KB OTP area is user programmable for complete customization. The user can write to this
area once, after which it is automatically and permanently locked. After it is locked, the OTP area
becomes read only, just like a ROM device.
Regardless of the state of any of the LOCK bytes, the OTP pages cannot be erased.
Typically, the OTP area is used to store customer and product information such as: product ID,
software version, production data, customer ID, Service provider information and tracking
information.
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• 64-bit protection key
• Hard-wired LOCK# signal
Protection and Security-Enabling Features
Read/Write Protection
Unique Identification (UID) Number
One-Time Programmable (OTP) Area
Data Sheet (Preliminary) Rev. 0.3
DiskOnChip G4 128MB (1Gb)/256MB (2Gb) 1.8V
92-DS-1105-00