參數(shù)資料
型號： AM29LV320DB120WME
廠商： SPANSION LLC
元件分類： PROM
英文描述： 2M X 16 FLASH 3V PROM, 120 ns, PBGA48
封裝： 6 X 12 MM, 0.80 MM PITCH, FBGA-48
文件頁數(shù)： 10/53頁
文件大?。?/td> 1008K
代理商： AM29LV320DB120WME
18
Am29LV320D
July 30, 2002
The alternate method intended only for programming
equipment, and requires V
ID on address pin A9 and
OE#. This method is compatible with programmer rou-
tines written for earlier 3.0 volt-only AMD flash de-
vices. For detailed information, contact an AMD
representative.
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.
It is possible to determine whether a sector is pro-
tected or unprotected. See the Autoselect Mode sec-
tion for details.
Write Protect (WP#)
The Write Protect function provides a hardware
method of protecting certain boot sectors without
using V
ID. This function is one of two provided by the
WP#/ACC pin.
If the system asserts V
IL on the WP#/ACC pin, the de-
vice disables program and erase functions in the two
“outermost” 8 Kbyte boot sectors independently of
whether those sectors were protected or unprotected
using the method described in “Sector/Sector Block
Protection and Unprotection”. The two outermost 8
Kbyte boot sectors are the two sectors containing the
lowest addresses in a bottom-boot-configured device,
or the two sectors containing the highest addresses in
a top-boot-configured device.
If the system asserts V
IH on the WP#/ACC pin, the de-
vice reverts to whether the two outermost 8K Byte
boot sectors were last set to be protected or unpro-
tected. That is, sector protection or unprotection for
these two sectors depends on whether they were last
protected or unprotected using the method described
Note that the WP#/ACC pin must not be left floating or
unconnected; inconsistent behavior of the device may
result.
Temporary Sector Unprotect
This feature allows temporary unprotection of previ-
ously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the RE-
SET# pin to V
ID (11.5 V – 12.5 V). During this mode,
formerly protected sectors can be programmed or
erased by selecting the sector addresses. Once V
ID is
removed from the RESET# pin, all the previously pro-
tected sectors are protected again. Figure 1 shows the
algorithm, and Figure 23 shows the timing diagrams,
for this feature.
Figure 1.
Temporary Sector Unprotect Operation
START
Perform Erase or
Program Operations
RESET# = V
IH
Temporary Sector
Unprotect Completed
(Note 2)
RESET# = V
ID
(Note 1)
Notes:
1. All protected sectors unprotected (If WP#/ACC = V
IL,
outermost boot sectors will remain protected).
2. All previously protected sectors are protected once
again.
相關PDF資料
PDF描述
AM29LV640MH101EF 4M X 16 FLASH 3V PROM, 100 ns, PDSO56
AM2D-11G ACTIVE DELAY LINE, TRUE OUTPUT, PDSO8
AI4D-4J ACTIVE DELAY LINE, TRUE OUTPUT, PDSO14
AM3D-11J ACTIVE DELAY LINE, TRUE OUTPUT, PDSO8
AM3D-25J ACTIVE DELAY LINE, TRUE OUTPUT, PDSO8
相關代理商/技術參數(shù)
參數(shù)描述
AM29LV320DB120WMI 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 120ns 48-Pin FBGA
AM29LV320DB90EC 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin TSOP
AM29LV320DB90ED 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin TSOP
AM29LV320DB90EF 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin TSOP
AM29LV320DB90EI 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin TSOP
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