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AM29BL162CB70RZF 参数 Datasheet PDF下载

AM29BL162CB70RZF图片预览
型号: AM29BL162CB70RZF
PDF下载: 下载PDF文件 查看货源
内容描述: 16兆位( 1一M× 16位) CMOS 3.0伏只突发模式闪存 [16 Megabit (1 M x 16-Bit) CMOS 3.0 Volt-only Burst Mode Flash Memory]
分类和应用: 闪存
文件页数/大小: 50 页 / 843 K
品牌: SPANSION [ SPANSION ]
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D A T A S H E E T  
Table 1. In addition, when verifying sector protection,  
Autoselect Mode  
the sector address must appear on the appropriate  
highest order address bits (see Table 2). Table 1 shows  
the remaining address bits that are don’t care. When all  
necessary bits have been set as required, the program-  
ming equipment may then read the corresponding  
identifier code on DQ7-DQ0.  
The autoselect mode provides manufacturer and de-  
vice identification, and sector protection verification,  
through identifier codes output on DQ7–DQ0. This  
mode is primarily intended for programming equipment  
to automatically match a device to be programmed with  
its corresponding programming algorithm. However,  
the autoselect codes can also be accessed in-system  
through the command register.  
To access the autoselect codes in-system, the host  
system can issue the autoselect command via the  
command register, as shown in Table 8. This method  
does not require VID. See “Command Definitions” for  
details on using the autoselect mode.  
When using programming equipment, the autoselect  
mode requires VID (11.5 V to 12.5 V) on address pin  
A9. Address pins A6, A1, and A0 must be as shown in  
Table 3. Am29BL162C Autoselect Codes (High Voltage Method)  
A19 A11  
to to  
CE# OE# WE# A12 A10 A9  
A8  
to  
A7  
A5  
to  
A2  
DQ15 to  
DQ0  
Description  
A6  
A1  
A0  
Manufacturer ID: AMD  
L
L
H
X
X
V
X
X
L
X
X
L
L
0001h  
ID  
Device ID:  
Am29BL162CB  
(Bottom Boot Block)  
L
L
H
X
X
V
L
L
H
2203h  
ID  
X
X
V
V
X
X
L
L
X
X
H
H
L
L
0001h (protected)  
ID  
Sector Protection  
Verification  
L
L
L
L
H
H
SA  
X
0000h (unprotected)  
ID  
0000h  
(non-burst mode)  
0001h  
Burst Mode Status  
X
V
X
L
X
H
H
ID  
(burst mode)  
L = Logic Low = V , H = Logic High = V , SA = Sector Address, X = Don’t care.  
IL  
IH  
Note: The autoselect codes may also be accessed in-system via command sequences. See Table 8.  
The primary method requires VID on the RESET# pin  
only, and can be implemented either in-system or via  
programming equipment. Figure 2 shows the algo-  
rithms and Figure 24 shows the timing diagram. This  
method uses standard microprocessor bus cycle  
timing. For sector unprotect, all unprotected sectors  
must first be protected prior to the first sector unprotect  
write cycle.  
Sector Protection/Unprotection  
The hardware sector protection feature disables both  
program and erase operations in any sector. The hard-  
ware sector unprotection feature re-enables both program  
and erase operations in previously protected sectors.  
The device is shipped with all sectors unprotected.  
AMD offers the option of programming and protecting  
sectors at its factory prior to shipping the device  
through AMD’s ExpressFlash™ Service. Contact an  
AMD representative for details.  
The alternate method intended only for programming  
equipment requires VID on address pin A9 and OE#.  
This method is compatible with programmer routines  
written for earlier 3.0 volt-only AMD flash devices. De-  
tails on this method are provided in a supplement, pub-  
lication number 22240. Contact an AMD representative  
to request a copy.  
It is possible to determine whether a sector is protected  
or unprotected. See “Autoselect Mode” for details.  
Sector protection/unprotection can be implemented via  
two methods.  
12  
Am29BL162C  
July 8, 2005