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AT45DB321D bảng dữ liệu(PDF) 42 Page - List of Unclassifed Manufacturers

tên linh kiện AT45DB321D
Giải thích chi tiết về linh kiện  32Mb, 2.5V or 2.7V DataFlash
PDF  52 Pages
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nhà sản xuất  ETC2 [List of Unclassifed Manufacturers]
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AT45DB321D bảng dữ liệu(HTML) 42 Page - List of Unclassifed Manufacturers

Back Button AT45DB321D_13 Datasheet HTML 38Page - List of Unclassifed Manufacturers AT45DB321D_13 Datasheet HTML 39Page - List of Unclassifed Manufacturers AT45DB321D_13 Datasheet HTML 40Page - List of Unclassifed Manufacturers AT45DB321D_13 Datasheet HTML 41Page - List of Unclassifed Manufacturers AT45DB321D_13 Datasheet HTML 42Page - List of Unclassifed Manufacturers AT45DB321D_13 Datasheet HTML 43Page - List of Unclassifed Manufacturers AT45DB321D_13 Datasheet HTML 44Page - List of Unclassifed Manufacturers AT45DB321D_13 Datasheet HTML 45Page - List of Unclassifed Manufacturers AT45DB321D_13 Datasheet HTML 46Page - List of Unclassifed Manufacturers Next Button
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AT45DB321D [DATASHEET]
3597T–DFLASH–11/2013
Figure 23-2. Algorithm for Randomly Modifying Data
Notes: 1.
To preserve data integrity, each page of an DataFlash sector must be updated/rewritten at least once within every
20,000 cumulative page erase and program operations.
2. A page address pointer must be maintained to indicate which page is to be rewritten. The auto page rewrite com-
mand must use the address specified by the page address pointer.
3.
Other algorithms can be used to rewrite portions of the flash array. Low-power applications may choose to wait
until 20,000 cumulative page erase and program operations have accumulated before rewriting all pages of the
sector. See application note AN-4 (“Using Serial DataFlash”) for more details.
START
Main Memory Page
to Buffer Transfer
(53h, 55h)
Increment Page
Address Pointer
(2)
Auto Page Rewrite
(2)
(58h, 59h)
END
provide address of
page to modify
If planning to modify multiple
bytes currently stored within
a page of the Flash array
Main Memory Page Program
through Buffer
(82h, 85h)
Buffer Write
(84h, 87h)
Buffer to Main
Memory Page Program
(83h, 86h)



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