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AS29LV016JTRGR-55/IT 参数 Datasheet PDF下载

AS29LV016JTRGR-55/IT图片预览
型号: AS29LV016JTRGR-55/IT
PDF下载: 下载PDF文件 查看货源
内容描述: 16兆位( 2M ×8位/ 1M ×16位) CMOS 3.0伏只引导扇区闪存 [16 Megabit (2M x 8-Bit / 1M x 16-Bit) CMOS 3.0 Volt-Only Boot Sector Flash Memory]
分类和应用: 闪存内存集成电路光电二极管
文件页数/大小: 40 页 / 408 K
品牌: AUSTIN [ AUSTIN SEMICONDUCTOR ]
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COTS PEM  
BOOT SECTOR FLASH  
Austin Semiconductor, Inc.  
Figure 2. In-System Sector Protect/Unprotect Algorithms  
AS29LV016J  
START  
Protect all sectors:  
PLSCNT = 1  
START  
The indicated portion  
of the sector group protect  
algorithm must be  
performed for all  
unprotected sector groups  
prior to issuing the  
RESET# = VID  
Wait 1 μs  
PLSCNT = 1  
RESET# = VID  
first sector group  
unprotect address  
Wait 1 μs  
No  
First Write  
Temporary Sector  
Group Unprotect Mode  
Cycle = 60h?  
No  
First Write  
Cycle = 60h?  
Temporary Sector  
Group Unprotect Mode  
Yes  
No  
All sectors  
protected?  
Yes  
Set up sector  
group address  
Yes  
Set up first sector  
group address  
Sector Group Protect:  
Write 60h to sector group  
address with  
A6 = 0,  
A3 = A2 = 0,  
A1 = 1, A0 = 0  
Sector Group Unprotect:  
Write 60h to sector  
address with  
A6 = 1,  
A3 = A2 = 0,  
A1 = 1, A0 = 0  
Wait 150 μs  
Verify Sector Group  
Protect: Write 40h  
Wait 1.5 ms  
to sector group address  
with A6 = 0,  
Verify Sector Group  
Unprotect: Write  
40h to sector group  
address with  
A3 = A2 = 0,  
A1 = 1, A0 = 0  
Increment  
PLSCNT  
Reset  
PLSCNT = 1  
A6 = 1,  
A3 = A2 = 0,  
A1 = 1, A0 = 0  
Read from  
sector group address  
with A6 = 0,  
Increment  
PLSCNT  
A3 = A2 = 0,  
A1 = 1, A0 = 0  
Read from  
No  
sector group address  
with A6 = 1,  
A3 = A2 = 0,  
A1 = 1, A0 = 0  
No  
PLSCNT  
= 25?  
Data = 01h?  
No  
Set up  
next sector group  
address  
Yes  
No  
Yes  
PLSCNT  
= 1000?  
Data = 00h?  
Yes  
Protect another  
sector group?  
Device failed  
Yes  
Yes  
No  
Last sector  
No  
Device failed  
group verified?  
Remove VID  
from RESET#  
Yes  
Write reset  
command  
Remove VID  
from RESET#  
Sector Group  
Unprotect Algorithm  
Sector Group  
Protect Algorithm  
Sector Group  
Protect complete  
Write reset  
command  
Sector Group  
Unprotect complete  
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.  
AS29LV016J  
Rev. 0.0 02/09  
13  
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