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參數(shù)資料
| 型號(hào)： | S71GL064A08 |
| 廠(chǎng)商： | Spansion Inc. |
| 英文描述： | STACKED MULTI CHIP PRODUCT FLASH MEMORY AND RAM |
| 中文描述： | 堆疊式多芯片產(chǎn)品，閃存和RAM |
| 文件頁(yè)數(shù)： | 82/134頁(yè) |
| 文件大?。?/td> | 2383K |
| 代理商： | S71GL064A08 |
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February 8, 2005 S71GL064A_00_A2
S71GL064A based MCPs
49
Advance
Informatio n
Sector Erase Command Sequence
Sector erase is a six bus cycle operation. The sector erase command sequence is initiated by
writing two unlock cycles, followed by a set-up command. Two additional unlock cycles are
written, and are then followed by the address of the sector to be erased, and the sector erase
command. Table 10 shows the address and data requirements for the sector erase command
sequence.
The device does not require the system to preprogram prior to erase. The Embedded Erase
algorithm automatically programs and verifies the entire memory for an all zero data pattern
prior to electrical erase. The system is not required to provide any controls or timings during
these operations.
After the command sequence is written, a sector erase time-out of 50 s occurs. During the
time-out period, additional sector addresses and sector erase commands may be written.
Loading the sector erase buffer may be done in any sequence, and the number of sectors may
be from one sector to all sectors. The time between these additional cycles must be less than
50 s, otherwise erasure may begin. Any sector erase address and command following the
exceeded time-out may or may not be accepted. It is recommended that processor interrupts
be disabled during this time to ensure all commands are accepted. The interrupts can be
re-enabled after the last Sector Erase command is written. Any command other than Sec-
tor Erase or Erase Suspend during the time-out period resets the device to the read
mode. Note that the Secured Silicon Sector, autoselect, and CFI functions are unavailable
when an erase operation is in progress. The system must rewrite the command sequence and
any additional addresses and commands.
The system can monitor DQ3 to determine if the sector erase timer has timed out (See the
section on DQ3: Sector Erase Timer.). The time-out begins from the rising edge of the final
WE# pulse in the command sequence.
When the Embedded Erase algorithm is complete, the device returns to reading array data
and addresses are no longer latched. The system can determine the status of the erase op-
eration by reading DQ7, DQ6, or DQ2 in the erasing sector. Refer to the Write Operation
Status section for information on these status bits.
Once the sector erase operation has begun, only the Erase Suspend command is valid. All
other commands are ignored. However, note that a hardware reset immediately terminates
the erase operation. If that occurs, the sector erase command sequence should be reinitiated
once the device has returned to reading array data, to ensure data integrity.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| S71GL064A08-0B | 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:STACKED MULTI CHIP PRODUCT FLASH MEMORY AND RAM |
| S71GL064A08-0F | 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:STACKED MULTI CHIP PRODUCT FLASH MEMORY AND RAM |
| S71GL064A08BAI0B0 | 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| S71GL064A08BAI0B2 | 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| S71GL064A08BAI0B3 | 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
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