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参数资料
| 型号： | AT45D081 |
| 厂商： | Atmel Corp. |
| 英文描述： | 8-Megabit 5-volt Only Serial DataFlash |
| 中文描述： | 8兆位5伏只有串行的DataFlash |
| 文件页数： | 15/16页 |
| 文件大小： | 115K |
| 代理商： | AT45D081 |
AT45D081
15
Algorithm for Randomly Modifying Data
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)
Figure 2
Notes:
1.
To preserve data integrity, each page of the DataFlash memory array must be updated/rewritten at least once within
every 10,000 cumulative page erase/program operations.
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.
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 Flash array. See
application note AN-4 (“Using Atmel’s Serial DataFlash”) for more details.
2.
3.
相关PDF资料 |
PDF描述 |
|---|---|
| AT45D081-RC | 8-Megabit 5-volt Only Serial DataFlash |
| AT45D081-RI | 8-Megabit 5-volt Only Serial DataFlash |
| AT45D081-TC | 8-Megabit 5-volt Only Serial DataFlash |
| AT45D081-TI | 8-Megabit 5-volt Only Serial DataFlash |
| AT45D161-JC | 16-Megabit 5-volt Only Serial DataFlash |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT45D081A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8M bit. 5.0-Volt Only Serial-Interface Flash with Two 264-Byte SRAM Buffers. For new designs please use AT45DB081B. |
| AT45D081A-JC | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SPI Serial EEPROM |
| AT45D081A-JI | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SPI Serial EEPROM |
| AT45D081A-RC | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-megabit 5-volt Only Serial DataFlash |
| AT45D081A-RI | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-megabit 5-volt Only Serial DataFlash |
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