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AT45DB081D Datasheet(PDF) 4 Page - Analog Devices

Part # AT45DB081D
Description  8-megabit 2.5V or 2.7V DataFlash
PDF  53 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AT45DB081D Datasheet(HTML) 4 Page - Analog Devices

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3596O–DFLASH–1/2013
AT45DB081D
3. Block Diagram
4. Memory Array
To provide optimal flexibility, the memory array of the AT45DB081D is divided into three levels of granularity comprising of
sectors, blocks, and pages. The “Memory Architecture Diagram” illustrates the breakdown of each level and details the
number of pages per sector and block. All program operations to the DataFlash occur on a page by page basis. The erase
operations can be performed at the chip, sector, block or page level.
Figure 4-1.
Memory Architecture Diagram
FLASH MEMORY ARRAY
PAGE (256-/264-BYTES)
BUFFER 2 (256-/264-BYTES)
BUFFER 1 (256-/264-BYTES)
I/O INTERFACE
SCK
CS
RESET
VCC
GND
WP
SO
SI
SECTOR 0a = 8 Pages
2,048 / 2,112-bytes
SECTOR 0b = 248 Pages
63,488 / 65,472-bytes
Block = 2,048 / 2,112-bytes
8 Pages
SECTOR 0a
Page = 256 / 264-bytes
PAGE 0
PAGE 1
PAGE 6
PAGE 7
PAGE 8
PAGE 9
PAGE 4,094
PAGE 4,095
PAGE 14
PAGE 15
PAGE 16
PAGE 17
PAGE 18
SECTOR ARCHITECTURE
BLOCK ARCHITECTURE
PAGE ARCHITECTURE
BLOCK 0
BLOCK 1
BLOCK 30
BLOCK 31
BLOCK 32
BLOCK 33
BLOCK 510
BLOCK 511
BLOCK 62
BLOCK 63
BLOCK 64
BLOCK 65
SECTOR 15 = 256 Pages
65,536 / 67,584-bytes
BLOCK 2
SECTOR 1 = 256 Pages
65,536 / 67,584-bytes
SECTOR 14 = 256 Pages
65,536 / 67,584-bytes
SECTOR 2 = 256 Pages
65,536 / 67,584-bytes



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