MD8331-D2G-V3-X-P SanDisk, MD8331-D2G-V3-X-P Datasheet - Page 50

• Manufacturer Part Number: MD8331-D2G-V3-X-P
• Description: IC MDOC G4 2GB 69-FBGA
• Manufacturer: SanDisk

Specifications of MD8331-D2G-V3-X-P

• Format - Memory: FLASH
• Memory Type: FLASH - Nand
• Memory Size: 2G (256M x 8)
• Speed: 33ns
• Interface: Parallel
• Voltage - Supply: 2.5 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 69-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 585-1149-2; MD8831-D2G-V3-X-P; MD8832-D2G-V3-X-P

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3
7
0: The bottom 2KB of data (IPL pages 0-3) are loaded.
1: The top 2KB of data (IPL pages 12-15) are loaded.
Setting this bit does not affect the mapping of data from the flash to RAM, or the order of
bytes in RAM.
VR_EN = 0: Swaps the fixed and downloadable 1KB sections of the RAM as follows:
0: 1KB page starting at 0000H (aliased to 1800H) is fixed, 1KB page starting at 0400H
(aliased to 1C00H) is downloadable via Paged RAM command sequence.
1: 1KB page starting at 0400H (aliased to 1C00H) is fixed, 1KB page starting at 0000H
(aliased to 1800H) is downloadable via Paged RAM command sequence. After the initial
download, the data in the upper and lower 1KB pages is swapped compared to the case of
Alternate Memory Map = 0.
VR_DIS [Virtual RAM Disable] Setting this bit prevents Virtual RAM downloads from
occurring. This feature may be set prior to a software reset in order to allow polling the
Download Status Register for ready status without triggering an unwanted Virtual RAM
download. After the software reset is complete, this bit must be cleared to allow
subsequent Virtual RAM downloads, i.e. warm boot
VRS [Virtual RAM Supported] This read-only bit returns a 1 to indicate a device which
supports Virtual RAM mode.
Data Sheet (Preliminary) Rev. 0.3
DiskOnChip G4 128MB (1Gb)/256MB (2Gb) 1.8V
92-DS-1105-00