MD4331-D1G-V3Q18-X-P/Y SanDisk, MD4331-D1G-V3Q18-X-P/Y Datasheet - Page 39

• Manufacturer Part Number: MD4331-D1G-V3Q18-X-P/Y
• Description: IC MDOC G3 1GB 69-FBGA
• Manufacturer: SanDisk

Specifications of MD4331-D1G-V3Q18-X-P/Y

• Format - Memory: FLASH
• Memory Type: FLASH - Nand
• Memory Size: 1G (128M x 8)
• Speed: 55ns
• Interface: Parallel
• Voltage - Supply: 2.5 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 585-1133

concurrently read or written if they have the same offset within their respective units, even if the
units are unaligned.
Bad units are mapped individually on each plane by enabling unaligned unit access, as shown in
Figure 14. Good units can therefore be aligned or unaligned, minimizing the effects of bad units on
the media. Without this capability, a bad unit in one plane would cause a good unit in the second
plane to be tagged as a bad unit, making it unusable. This customized method of bad unit handling
for two planes enhances data reliability without adversely affecting performance.
36
~ ~
Flash Plane 1
Good Unit
Good Unit
Good Unit
Good Unit
Good Unit
Good Unit
Bad Unit
Figure 14: Unaligned Multi-Plane Access
Preliminary Data Sheet, Rev. 1.1
~ ~
Aligned Unit
Aligned Unit
Aligned Unit
Aligned Unit
Aligned Unit
Internal Bus
~ ~
Flash Plane 2
Good Unit
Good Unit
Good Unit
Good Unit
Good Unit
Good Unit
Bad Unit
~ ~
Mobile DiskOnChip G3
91-SR-011-05-8L