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AT45DB081D Datasheet(PDF) 4 Page - ATMEL Corporation

Part # AT45DB081D
Description  8-megabit 2.5-volt or 2.7-volt DataFlash
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT45DB081D Datasheet(HTML) 4 Page - ATMEL Corporation

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4
3596I–DFLASH–4/08
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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