MD5811-D256-V3Q18-P SanDisk, MD5811-D256-V3Q18-P Datasheet - Page 27

• Manufacturer Part Number: MD5811-D256-V3Q18-P
• Description: IC MDOC P3 256MB 48-TSOP
• Manufacturer: SanDisk

Specifications of MD5811-D256-V3Q18-P

• Format - Memory: FLASH
• Memory Type: FLASH - Nand
• Memory Size: 256M (32M x 8)
• Speed: 55ns
• Interface: Parallel
• Voltage - Supply: 2.5 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 48-TSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.4.3
The 6KB 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.
Typically, the OTP area is used to store customer and product information such as: product ID,
software version, production data, customer ID and tracking information.
3.4.4
A single partition in the Mobile DiskOnChip P3 can be set as One-Time Write. After it is locked,
this partition becomes read only, just like a ROM device. Its capacity is defined during the media-
formatting stage.
3.4.5
The boot partition can be locked automatically by hardware after the boot phase is completed and
the device is in Normal mode. This is done by setting the Sticky Lock (SLOCK) bit in the Output
Control register to 1. This 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, assertion of this bit prevents
the protection key from disabling the protection for a given partition. There is no need to mount the
boot partition before calling a hardware protection routine.
Upon reset, the boot partition is unlocked for the duration of the boot phase, and is automatically
locked once this phase is over. This provides a high level of protection to the boot code, while still
enabling an easy method for field and remote upgrades.
3.5
The Programmable Boot Block with XIP functionality enables Mobile DiskOnChip P3 to act as a
boot device in addition to performing flash disk data storage functions. This eliminates the need for
expensive, legacy NOR flash or any other boot device on the motherboard.
The Programmable Boot Block on Mobile DiskOnChip P3 256Mb is 2KB in size. The Download
Engine (DE), described in the next section, expands the functionality of this block by copying the
boot code from the flash into the boot block.
DiskOnChip P3 256Mb devices may be cascaded in order to form a larger flash disk. When Mobile
DiskOnChip P3 256Mb is connected with a standard NOR-like interface, up to four devices may be
cascaded to create a 1Gb flash disk. When Mobile DiskOnChip P3 256Mb is connected with a
multiplexed interface, up to two devices may be cascaded to create a 512 Mb flash disk.
Note: When more than one Mobile DiskOnChip P3 256Mb are cascaded, a maximum boot block of
24
4KB is available. The Programmable Boot Block of each device is mapped to a unique
address space.
One-Time Programmable (OTP) Area
One-Time Write (ROM-Like) Partition
Sticky Lock (SLOCK)
Programmable Boot Block with eXecute In Place (XIP) Functionality
Data Sheet, Rev. 0.3
Mobile DiskOnChip P3
93-SR-009-8L