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参数资料
| 型号： | AT45DB041-JI |
| 厂商： | ATMEL CORP |
| 元件分类： | DRAM |
| 英文描述： | 4-Megabit 2.7-volt Only Serial DataFlash |
| 中文描述： | 528K X 8 FLASH 2.7V PROM, PQCC32 |
| 封装： | PLASTIC, MS-016AE, LCC-32 |
| 文件页数： | 17/19页 |
| 文件大小： | 150K |
| 代理商： | AT45DB041-JI |
AT45DB011
17
Figure 2.
Algorithm for Randomly Modifying Data
Notes:
1.
To preserve data integrity, each page of a DataFlash
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
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)
INCREMENT PAGE
ADDRESS POINTER
(2)
Auto Page Rewrite
(2)
(58H)
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)
BUFFER WRITE
(84H)
BUFFER to MAIN
MEMORY PAGE PROGRAM
(83H)
Sector Addressing
PA8
PA7
PA6
PA5
PA4
PA3
PA2-
PA0
Sector
0
0
0
0
0
0
X
0
0
X
X
X
X
X
X
1
1
X
X
X
X
X
X
2
相关PDF资料 |
PDF描述 |
|---|---|
| AT45DB041-RC | 4-Megabit 2.7-volt Only Serial DataFlash |
| AT45DB041-RI | 4-Megabit 2.7-volt Only Serial DataFlash |
| AT45DB041-TC | 4-Megabit 2.7-volt Only Serial DataFlash |
| AT45DB041-TI | 4-Megabit 2.7-volt Only Serial DataFlash |
| AT45DB011B | 1-MEGABIT 2.7 VOLT ONLY DATA FLASH |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT45DB041-RC | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-Megabit 2.7-volt Only Serial DataFlash |
| AT45DB041-RI | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-Megabit 2.7-volt Only Serial DataFlash |
| AT45DB041-TC | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-Megabit 2.7-volt Only Serial DataFlash |
| AT45DB041-TI | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-Megabit 2.7-volt Only Serial DataFlash |
| AT45DB080 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Megabit 2.7-volt Only Sequential Access Parallel I/O DataFlash |
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