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AT45DB321C-RU 数据表(PDF) 3 Page - ATMEL Corporation

部件名 AT45DB321C-RU
功能描述  32-megabit 2.7 volt DataFlash
PDF  40 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

AT45DB321C-RU 数据表(HTML) 3 Page - ATMEL Corporation

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3
3387L–DFLASH–6/06
AT45DB321C
3.
Block Diagram
4.
Memory Array
To provide optimal flexibility, the memory array of the AT45DB321C is divided into three levels of
granularity comprising of sectors, blocks, and pages. The “Memory Architecture Diagram” illus-
trates 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 block or page level.
Figure 4-1.
Memory Architecture Diagram
FLASH MEMORY ARRAY
PAGE (528 BYTES)
BUFFER 2 (528 BYTES)
BUFFER 1 (528 BYTES)
I/O INTERFACE
SCK
CS
RESET
VCC
GND
RDY/BUSY
WP
SO
SI
SECTOR 0a = 8 Pages
4224 bytes (4K + 128)
SECTOR 0b = 504 Pages
266,112 bytes (252K + 8064)
Block = 4224 bytes
(4K + 128)
8 Pages
SECTOR 0a
Page = 528 bytes
(512 + 16)
PAGE 0
PAGE 1
PAGE 6
PAGE 7
PAGE 8
PAGE 9
PAGE 8190
PAGE 8191
PAGE 14
PAGE 15
PAGE 16
PAGE 17
PAGE 18
PAGE 8189
SECTOR ARCHITECTURE
BLOCK ARCHITECTURE
PAGE ARCHITECTURE
BLOCK 0
BLOCK 1
BLOCK 62
BLOCK 63
BLOCK 64
BLOCK 65
BLOCK 1022
BLOCK 1023
BLOCK 126
BLOCK 127
BLOCK 128
BLOCK 129
SECTOR 15 = 512 Pages
270,336 bytes (256K + 8K)
BLOCK 2
SECTOR 1 = 512 Pages
270,336 bytes (256K + 8K)
SECTOR 14 = 512 Pages
270,336 bytes (256K + 8K)
SECTOR 2 = 512 Pages
270,336 bytes (256K + 8K)



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