欢迎访问ic37.com |
会员登录 免费注册
发布采购

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. ]
 浏览型号EX29DS160-90RTCI的Datasheet PDF文件第20页浏览型号EX29DS160-90RTCI的Datasheet PDF文件第21页浏览型号EX29DS160-90RTCI的Datasheet PDF文件第22页浏览型号EX29DS160-90RTCI的Datasheet PDF文件第23页浏览型号EX29DS160-90RTCI的Datasheet PDF文件第25页浏览型号EX29DS160-90RTCI的Datasheet PDF文件第26页浏览型号EX29DS160-90RTCI的Datasheet PDF文件第27页浏览型号EX29DS160-90RTCI的Datasheet PDF文件第28页  
E S I  
E S I  
ADVANCED INFORMATION  
Excel Semiconductor inc.  
AUTOSELECT COMMAND  
SECURITY SECTOR COMMAND  
In the ES29DL320 device, the security sector region  
(256 bytes) provides a secured data area containing  
a random, sixteen-byte electronic serial num-  
ber(ESN) or customer’s security codes. The secu-  
rity sector region can be accessed by issuing the  
three-cycle Enter Security Sector command  
sequence. The device continues to access the  
security sector region until the system issues the  
four-cycle Exit Security Sector command  
sequence. The Exit Security Sector command  
sequence returns the device to normal operation.  
Table 9 shows the address and data requirements  
for both command sequences. Note that the accel-  
erated programming function by WP#ACC and  
unlock bypass mode are not available when the  
device has entered the security sector. Refer to the  
Fig. 7 for the security sector operation.  
The autoselect command sequence allows the host  
system to access the manufacturer and device  
codes, and determine whether or not a sector is  
protected, including information about factory-  
locked or customer lockable version.  
Identifier Code  
Manufacturer ID  
Device ID  
Address  
00h  
Data  
4Ah  
01h  
41h(T),  
81h(B)  
Security Sector Factory  
03h  
82 / 02  
00 / 01  
Sector Group Protect Verify  
(SA)02h  
Table 9 shows the address and data requirements.  
This method is an alternative to “A9 high-voltage  
method” shown in Table 2, which is intended for  
PROM programmers and requires V on address  
ID  
pin A9. The autoselect command sequence may be  
written to an address within a bank that is either in  
the read mode or erase-suspend-read mode. The  
auto-select command may not be written while the  
device is actively programming or erasing in the  
other bank. The autoselect command sequence is  
initiated by first writing two unlock cycles. This is  
followed by a third write cycle that contains the  
bank address and the autoselect command. The  
bank then enters the autoselect mode. The system  
may read at any address within the same bank any  
number of times without initiating another autose-  
lect command sequence.  
Read Mode  
Enter Security  
Sector Command  
Program, Erase or  
Protection  
- A read cycle at address (BA) XX00h (where BA is  
the bank address) returns the manufacturer code  
- A read cycle at address (BA)XX01h in word mode  
(or (BA)XX02h in byte mode) returns the device  
code.  
Exit Security  
Sector Command  
- A read cycle to an address containing a sector  
address (SA) within the same bank, and the add-  
ress 02h on A7 - A0 in word mode ( or the addre-  
ss 04h on A6 - A-1 in byte mode) returns 01h if  
the sector is protected, or 00h if it is unprotected.  
(Refer to Table 2 for valid sector addresses).  
Read Mode  
Figure 7. Security Sector Operation  
The system must write the reset command to return  
to the read mode (or erase-suspend-read mode if  
the bank was previously in Erase Suspend).  
24  
Rev. 0E May 25, 2006  
ES29DL320  
 复制成功!