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參數(shù)資料
| 型號： | S29WS256N0LBFI011 |
| 廠商： | Spansion Inc. |
| 英文描述： | 256/128/64 MEGABIT CMOS 1.8 VOLT ONLY SIMULTANEOUS READ/WRITE BURST MODE FLASH MEMORY |
| 中文描述： | 256/128/64兆位的CMOS 1.8伏只有同時讀/寫突發(fā)模式閃存 |
| 文件頁數(shù)： | 51/99頁 |
| 文件大小： | 1091K |
| 代理商： | S29WS256N0LBFI011 |
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January 25, 2005 S29WS-N_00_G0
53
Ad vance
Information
Figure 8.2. PPB Program/Erase Algorithm
8.3
Dynamic Protection Bits
Dynamic Protection Bits are volatile and unique for each sector and can be individually modified.
DYBs only control the protection scheme for unprotected sectors that have their PPBs cleared
(erased to “1”). By issuing the DYB Set or Clear command sequences, the DYBs are set (pro-
grammed to “0”) or cleared (erased to “1”), thus placing each sector in the protected or
unprotected state respectively. This feature allows software to easily protect sectors against in-
advertent changes yet does not prevent the easy removal of protection when changes are
needed.
Read Byte Twice
Addr = SA0
Enter PPB
Command Set.
Addr = BA
Program PPB Bit.
Addr = SA
DQ5 = 1?
Yes
No
Yes
DQ6 =
Toggle?
DQ6 =
Toggle?
Read Byte.
Addr = SA
PASS
FAIL
Issue Reset
Command
Exit PPB
Command Set
DQ0 =
'1' (Erase)
'0' (Pgm.)?
Read Byte Twice
Addr = SA0
No
Wait 500 s
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| S29WS256N0LBFI012 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:256/128/64 MEGABIT CMOS 1.8 VOLT ONLY SIMULTANEOUS READ/WRITE BURST MODE FLASH MEMORY |
| S29WS256N0LBFI013 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:256/128/64 Megabit (16/8/4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory |
| S29WS256N0LBFI110 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:256/128/64 MEGABIT CMOS 1.8 VOLT ONLY SIMULTANEOUS READ/WRITE BURST MODE FLASH MEMORY |
| S29WS256N0LBFI111 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:256/128/64 MEGABIT CMOS 1.8 VOLT ONLY SIMULTANEOUS READ/WRITE BURST MODE FLASH MEMORY |
| S29WS256N0LBFI112 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:256/128/64 MEGABIT CMOS 1.8 VOLT ONLY SIMULTANEOUS READ/WRITE BURST MODE FLASH MEMORY |
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