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S29GL128N11TAIV10 参数 Datasheet PDF下载

S29GL128N11TAIV10图片预览
型号: S29GL128N11TAIV10
PDF下载: 下载PDF文件 查看货源
内容描述: 3.0伏只页面模式闪存具有110纳米MirrorBit⑩工艺技术 [3.0 Volt-only Page Mode Flash Memory featuring 110 nm MirrorBit⑩ Process Technology]
分类和应用: 闪存
文件页数/大小: 100 页 / 2678 K
品牌: SPANSION [ SPANSION ]
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D a t a S h e e t  
Volatile Sector Protection Command Set  
The Volatile Sector Protection Command Set permits the user to set the Dynamic Protection  
Bit (DYB) to the protected state, clear the Dynamic Protection Bit (DYB) to the unprotected  
state, and read the logic state of the Dynamic Protection Bit (DYB).  
The Volatile Sector Protection Command Set Entry command sequence must be issued  
prior to any of the commands listed following to enable proper command execution.  
Note that issuing the Volatile Sector Protection Command Set Entry command disables  
reads and writes from main memory.  
„ DYB Set Command  
„ DYB Clear Command  
The DYB Set and DYB Clear commands are used to protect or unprotect a given sector. The  
high order address bits are issued at the same time as the code 00h or 01h on DQ7-DQ0. All  
other DQ data bus pins are ignored during the data write cycle. The DYB bits are modifiable  
at any time, regardless of the state of the PPB bit or PPB Lock Bit. The DYB bits are cleared  
to the unprotected state at power-up or hardware reset.  
„ DYB Status Read Command  
The programming state of the DYB bit for a given sector can be verified by writing a DYB Sta-  
tus Read command to the device. This requires an initial access delay.  
The Volatile Sector Protection Command Set Exit command must be issued after the ex-  
ecution of the commands listed previously to reset the device to read mode.  
Note that issuing the Volatile Sector Protection Command Set Exit command re-en-  
ables reads and writes to the main memory.  
Secured Silicon Sector Entry Command  
The Secured Silicon Sector Entry command allows the following commands to be executed  
„ Read from Secured Silicon Sector  
„ Program to Secured Silicon Sector  
Once the Secured Silicon Sector Entry Command is issued, the Secured Silicon Sector Exit  
command has to be issued to exit Secured Silicon Sector Mode.  
Secured Silicon Sector Exit Command  
The Secured Silicon Sector Exit command may be issued to exit the Secured Silicon Sector  
Mode.  
62  
S29GL-N MirrorBit™ Flash Family  
S29GL-N_00_B3 October 13, 2006