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AT45DB642D 데이터시트(PDF) 5 Page - ATMEL Corporation

부품명 AT45DB642D
상세설명  64-megabit 2.7-volt Dual-interface DataFlash
PDF  55 Pages
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제조업체  ATMEL [ATMEL Corporation]
홈페이지  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT45DB642D 데이터시트(HTML) 5 Page - ATMEL Corporation

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5
3542F–DFLASH–09/06
AT45DB642D
3.
Block Diagram
4.
Memory Array
To provide optimal flexibility, the memory array of the AT45DB642D 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 chip, sector, block or page level.
Figure 4-1.
Memory Architecture Diagram
FLASH MEMORY ARRAY
PAGE (1024/1056 BYTES)
BUFFER 2 (1024/1056 BYTES)
BUFFER 1 (1024/1056 BYTES)
I/O INTERFACE
SCK/CLK
CS
RESET
VCC
GND
RDY/BUSY
SER/BYTE
WP
SO
SI
I/O7 - I/O0
SECTOR 0a = 8 Pages
8192/8,448 bytes
SECTOR 0b = 248 Pages
253,952/261,888 bytes
Block = 8,192/8,448 bytes
8 Pages
SECTOR 0
Page = 1,024/1,056 bytes
PAGE 0
PAGE 1
PAGE 6
PAGE 7
PAGE 8
PAGE 9
PAGE 8,190
PAGE 8,190
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 1022
BLOCK 1023
BLOCK 62
BLOCK 63
BLOCK 64
BLOCK 65
SECTOR 31 = 256 Pages
262,144/270,336 bytes
BLOCK 2
SECTOR 1 = 256 Pages
262,144/270,336 bytes
SECTOR 30 = 256 Pages
262,144/270,336 bytes
SECTOR 2 = 256 Pages
262,144/270,336 bytes



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