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MT250QL01GABA3EW70AITES 参数 Datasheet PDF下载

MT250QL01GABA3EW70AITES图片预览
型号: MT250QL01GABA3EW70AITES
PDF下载: 下载PDF文件 查看货源
内容描述: [3V, Multiple I/O, 4KB, 32KB, 64KB, Sector Erase]
分类和应用:
文件页数/大小: 97 页 / 1038 K
品牌: MICRON [ MICRON TECHNOLOGY ]
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256Mb, 3V Multiple I/O Serial Flash Memory  
Security Registers  
Security Registers  
Security registers enable sector and password protection on multiple levels using non-  
volatile and volatile register and bit settings (shown below). The applicable register ta-  
bles follow.  
Figure 15: Sector and Password Protection  
(See Note 1)  
Sector Protection Register  
15 14 13  
Memory Sectors  
Last sector  
2
n
1
n
0
1
0
1
0
0
1
locked  
locked  
.
.
.
.
.
.
.
.
.
locked  
1
3rd sector  
2nd sector  
1st sector  
1
1
0
0
0
(See Note 2)  
Global Freeze Bit  
locked  
(See Note 3)  
(See Note 4)  
n
Nonvolatile  
Lock Bits  
Volatile  
Lock Bits  
1. Sector protection register. This 16-bit nonvolatile register includes two active bits[2:1]  
Notes:  
to enable sector and password protection.  
2. Global freeze bit. This volatile bit protects the settings in all nonvolatile lock bits.  
3. Nonvolatile lock bits. Each nonvolatile bit corresponds to and provides nonvolatile  
protection for an individual memory sector, which remains locked (protection enabled)  
until its corresponding bit is cleared to 1.  
4. Volatile lock bits. Each volatile bit corresponds to and provides volatile protection for  
an individual memory sector, which is locked temporarily (protection is cleared when the  
device is reset or powered down).  
5. The first and last sectors will have volatile protections at the 4KB subsector level. Each  
4KB subsector in these sectors can be individually locked by volatile lock bits setting;  
nonvolatile protections granularity remain at the sector level.  
CCMTD-1725822587-3368  
mt25q-qljs-L256-ABA-xxT.pdf - Rev. K 07/18 EN  
Micron Technology, Inc. reserves the right to change products or specifications without notice.  
34  
© 2014 Micron Technology, Inc. All rights reserved.  
 
 
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