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EX29DS160-90RTCI 参数 Datasheet PDF下载

EX29DS160-90RTCI图片预览
型号: EX29DS160-90RTCI
PDF下载: 下载PDF文件 查看货源
内容描述: 32兆( 4M ×8 / 2M ×16 )的CMOS 3.0伏只,同时操作闪存 [32Mbit(4M x 8/2M x 16) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory]
分类和应用: 闪存
文件页数/大小: 59 页 / 771 K
品牌: EXCELSEMI [ EXCEL SEMICONDUCTOR INC. ]
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E S I  
E S I  
ADVANCED INFORMATION  
Excel Semiconductor inc.  
In-System Protection / Unprotection Method  
START  
START  
Protect all sectors:  
The indicated por-  
tion of the sector  
protect algorithm  
must be performed  
for all unprotected  
sectors prior to  
issuing the first  
sector unprotect  
address  
COUNT = 1  
RESET# = V  
COUNT = 1  
RESET# = V  
ID  
ID  
Wait 1us  
Wait 1us  
No  
No  
Temporary Sector  
Unprotect Mode  
First Write  
First Write  
Temporary Sector  
Unprotect Mode  
Cycle = 60h?  
Cycle = 60h?  
Yes  
Yes  
Set up sector  
address  
No  
All sectors  
protected ?  
Sector Protect:  
Write 60h to sec-  
tor address with  
A6 = 0, A1 = 1,  
A0 = 0  
Yes  
Set up first sector  
address  
Sector Unpro-  
tect:  
Write 60h to sec-  
tor address with  
A6 = 1, A1 = 1,  
Wait 150us  
Verify Sector  
Protect:  
Write 40h to sec-  
tor address with  
A6 = 0, A1 = 1,  
A0 = 0  
Wait 15ms  
Increment  
COUNT  
Reset  
COUNT = 1  
Verify Sector  
Unprotect:  
Write 40h to sec-  
tor address with  
A6 = 1, A1 = 1,  
A0 = 0  
Set up next  
sector address  
Read from sec-  
tor address with  
A6 = 0, A1 = 1,  
A0 = 0  
Increment  
COUNT  
No  
Read from sec-  
tor address with  
A6 = 1, A1 = 1,  
A0 = 0  
No  
COUNT=25?  
Data = 01h?  
Yes  
No  
Yes  
No  
Yes  
COUNT  
=1000?  
Data = 00h?  
Yes  
Protectanother  
sector?  
Device failed  
Yes  
No  
No  
Remove V  
from RESET#  
ID  
Last sector  
verified?  
Device failed  
Yes  
Write reset  
command  
Remove V from  
ID  
RESET#  
Sector Protect  
complete  
Write reset  
command  
Sector Unprotect  
complete  
Figure 4. In-System Sector  
Unprotect Algorithm  
Figure 3. In-System Sector  
Protect Algorithm  
17  
Rev. 0E May 25, 2006  
ES29DL320  
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