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AM29DL640H70WHI 参数 Datasheet PDF下载

AM29DL640H70WHI图片预览
型号: AM29DL640H70WHI
PDF下载: 下载PDF文件 查看货源
内容描述: 64兆位(8M ×8位/ 4米x 16位) CMOS 3.0伏只,同步读/写闪存 [64 Megabit (8 M x 8-Bit/4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Read/Write Flash Memory]
分类和应用: 闪存存储内存集成电路
文件页数/大小: 54 页 / 1243 K
品牌: SPANSION [ SPANSION ]
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START  
START  
Protect all sectors:  
The indicated portion  
of the sector protect  
algorithm must be  
performed for all  
PLSCNT = 1  
PLSCNT = 1  
RESET# = VID  
RESET# = VID  
unprotected sectors  
prior to issuing the  
first sector  
Wait 1 μs  
Wait 1 μs  
unprotect address  
No  
First Write  
No  
First Write  
Cycle = 60h?  
Temporary Sector  
Unprotect Mode  
Temporary Sector  
Unprotect Mode  
Cycle = 60h?  
Yes  
Yes  
Set up sector  
address  
No  
All sectors  
protected?  
Sector Protect:  
Write 60h to sector  
address with  
A6 = 0, A1 = 1,  
A0 = 0  
Yes  
Set up first sector  
address  
Sector Unprotect:  
Wait 150 µs  
Write 60h to sector  
address with  
A6 = 1, A1 = 1,  
A0 = 0  
Verify Sector  
Protect: Write 40h  
to sector address  
with A6 = 0,  
Reset  
PLSCNT = 1  
Increment  
PLSCNT  
Wait 15 ms  
A1 = 1, A0 = 0  
Verify Sector  
Unprotect: Write  
40h to sector  
address with  
A6 = 1, A1 = 1,  
A0 = 0  
Read from  
sector address  
with A6 = 0,  
A1 = 1, A0 = 0  
Increment  
PLSCNT  
No  
No  
PLSCNT  
= 25?  
Read from  
sector address  
with A6 = 1,  
Data = 01h?  
Yes  
A1 = 1, A0 = 0  
No  
Yes  
Set up  
next sector  
address  
Yes  
No  
PLSCNT  
= 1000?  
Protect another  
sector?  
Data = 00h?  
Yes  
Device failed  
No  
Yes  
Remove VID  
from RESET#  
No  
Last sector  
verified?  
Device failed  
Write reset  
command  
Yes  
Remove VID  
Sector Unprotect  
Algorithm  
from RESET#  
Sector Protect  
Algorithm  
Sector Protect  
complete  
Write reset  
command  
Sector Unprotect  
complete  
Figure 2. In-System Sector Protect/Unprotect Algorithms  
Am29DL640H  
June 7, 2005  
17  
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