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S29GL128P90FAIR12 参数 Datasheet PDF下载

S29GL128P90FAIR12图片预览
型号: S29GL128P90FAIR12
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90纳米的MirrorBit工艺技术 [3.0 Volt-only Page Mode Flash Memory featuring 90 nm MirrorBit Process Technology]
分类和应用: 闪存
文件页数/大小: 77 页 / 2742 K
品牌: SPANSION [ SPANSION ]
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D a t a S h e e t ( P r e l i m i n a r y )  
7.9.3  
Software Reset  
Software reset is part of the command set (see Table 12.1 on page 68) that also returns the device to array  
read mode and must be used for the following conditions:  
1. to exit Autoselect mode  
2. when DQ5 goes high during write status operation that indicates program or erase cycle was not  
successfully completed  
3. exit sector lock/unlock operation.  
4. to return to erase-suspend-read mode if the device was previously in Erase Suspend mode.  
5. after any aborted operations  
Software Functions and Sample Code  
Table 7.18 Reset  
(LLD Function = lld_ResetCmd)  
Cycle  
Operation  
Byte Address  
Word Address  
Data  
Reset Command  
Write  
Base + xxxh  
Base + xxxh  
00F0h  
Note  
Base = Base Address.  
The following is a C source code example of using the reset function. Refer to the Spansion Low Level Driver  
User’s Guide (available on www.spansion.com) for general information on Spansion Flash memory software  
development guidelines.  
/* Example: Reset (software reset of Flash state machine) */  
*( (UINT16 *)base_addr ) = 0x00F0;  
The following are additional points to consider when using the reset command:  
„ This command resets the sectors to the read and address bits are ignored.  
„ Reset commands are ignored during program and erase operations.  
„ The reset command may be written between the cycles in a program command sequence before  
programming begins (prior to the third cycle). This resets the sector to which the system was writing to the  
read mode.  
„ If the program command sequence is written to a sector that is in the Erase Suspend mode, writing the  
reset command returns that sector to the erase-suspend-read mode.  
„ The reset command may be written during an Autoselect command sequence.  
„ If a sector has entered the Autoselect mode while in the Erase Suspend mode, writing the reset command  
returns that sector to the erase-suspend-read mode.  
„ If DQ1 goes high during a Write Buffer Programming operation, the system must write the “Write to Buffer  
Abort Reset” command sequence to RESET the device to reading array data. The standard RESET  
command does not work during this condition.  
„ To exit the unlock bypass mode, the system must issue a two-cycle unlock bypass reset command  
sequence [see Command Definitions on page 67 for details].  
November 8, 2007 S29GL-P_00_A7  
S29GL-P MirrorBit® Flash Family  
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