MD8331-D2G-V18-X-P SanDisk, MD8331-D2G-V18-X-P Datasheet - Page 25

• 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

4.
DiskOnChip G4 enhances performance using various proprietary techniques:
4.1
MultiBurst operation is especially effective for large file reads that are typical during boot-up.
During MultiBurst operation, data is read from the flash through a 16-bit wide internal flash
interface. Data is read by the host one 16-bit word after another using the CLK input, resulting in a
MultiBurst read mode of up to 15 MB/sec. MultiBurst operation can only be performed on hosts
that support burst reads. See Figure 8 below.
Note: A 30 nsec cycle time during MultiBurst can be achieved at VCC = VCCQ = 1.65 ~ 1.95V).
Note: DiskOnChip G4 does not support MultiBurst write operations.
25
• MultiBurst operation to read large chunks of data, providing a MultiBurst read speed of up
• DMA operation to release the CPU for other tasks in coordination with the platform’s DMA
X
to 15 MB/sec.
controller. This is especially useful during the boot stage. Up to 256KB of data can be
transferred during a DMA operation.
MultiBurst Operation
Internal data transfers
External data transfers
Flash Planesto FIFO
16 -bit to
2 T
/ DiskOnChip _ OE
Data transfer from
Data transfer from
Host
FIFO to Host
/ Flash _ OE
ECHNOLOGY
FIFO
16- bit Transfer
Figure 8: MultiBurst Operation
Data Sheet (Preliminary) Rev. 0.3
16- bit Transfer
16- bit Transfer
16 - bit Transfer
DiskOnChip G4 128MB (1Gb)/256MB (2Gb) 1.8V
16- bit Data
16- bit Transfer
W
O
R
D
1
Flash Plane
16- bit Transfer
92-DS-1105-00