參數(shù)資料
型號: AT45D161-JI
廠商: ATMEL CORP
元件分類: DRAM
英文描述: 16-Megabit 5-volt Only Serial DataFlash
中文描述: 16M X 1 FLASH 5V PROM, PQCC32
封裝: PLASTIC, MS-016AE, LCC-32
文件頁數(shù): 18/20頁
文件大?。?/td> 215K
代理商: AT45D161-JI
AT45D161
18
Figure 2.
Algorithm for Randomly Modifying Data
Notes:
1.
To preserve data integrity, each page of a DataFlash
sector (256 pages per sector) must be
updated/rewritten at least once within every 10,000
cumulative page erase/program operations within
that sector.
A Page Address Pointer must be maintained to indi-
cate which page is to be rewritten. The Auto Page
Rewrite command must use the address specified
by the Page Address Pointer.
Other algorithms can be used to rewrite portions of
the Flash array. Low power applications may choose
to wait until 10,000 cumulative page erase/program
operations have accumulated before rewriting all
256 pages of the sector. See application note AN-4
(“Using Atmel’s Serial DataFlash”) for more details.
2.
3.
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
(82H, 85H)
BUFFER WRITE
(84H, 87H)
BUFFER to MAIN
MEMORY PAGE PROGRAM
(83H, 86H)
Sector Addressing
PA11
PA10
PA9
PA8
Sector
0
0
0
0
0
0
0
0
1
1
0
0
1
0
2
1
1
0
1
13
1
1
1
0
14
1
1
1
1
15
相關(guān)PDF資料
PDF描述
AT45D161-RC 16-Megabit 5-volt Only Serial DataFlash
AT45D161-RI 16-Megabit 5-volt Only Serial DataFlash
AT45D161-TC 16-Megabit 5-volt Only Serial DataFlash
AT45D161-TI 16-Megabit 5-volt Only Serial DataFlash
AT45DB011-JC 1-Megabit 2.7-volt Only Serial DataFlash
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