參數(shù)資料
型號： MBM29DL640E
廠商： Fujitsu Limited
英文描述： 64 M (8 M X 8/4 M X 16) BIT Dual Operation
中文描述： 64米（8的MX 8 / 4的MX 16）位雙操作
文件頁數(shù)： 27/71頁
文件大?。?/td> 913K
代理商： MBM29DL640E
MBM29DL640E
80/90/12
27
RESET
Hardware Reset
The device may be reset by driving the RESET pin to V
IL
. The RESET pin has a pulse requirement and has to
be kept low (V
IL
) for at least “t
RP
” in order to properly reset the internal state machine. Any operation in the process
of being executed will be terminated and the internal state machine will be reset to the read mode “t
READY
” after
the RESET pin is driven low. Furthermore, once the RESET pin goes high the device requires an additional “t
RH
”
before it will allow read access. When the RESET pin is low, the device will be in the standby mode for the
duration of the pulse and all the data output pins will be tri-stated. If a hardware reset occurs during a program
or erase operation, the data at that particular location will be corrupted. Please note that the RY/BY output signal
should be ignored during the RESET pulse. See Figure 14 for the timing diagram. Refer to Temporary Sector
Group Unprotection for additional functionality.
Boot Block Sector Protection
The Write Protection 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 device disables program and erase functions in the two
outermost 8 Kbytes on both ends of boot sectors independently of whether those sectors are protected or
unprotected using the method described in “Sector Protection/Unprotection.”
(MBM29DL640E : SA0, SA1, SA140, and SA141)
If the system asserts V
IH
on the WP/ACC pin, the device reverts to whether the two outermost 8 Kbyte on both
ends of boot sectors were last set to be protected or unprotected. Sector protection or unprotection for these
four sectors depends on whether they were last protected or unprotected using the method described in “Sector
protection/unprotection.”
Accelerated Program Operation
The device offers accelerated program operation which enables programming in high speed. If the system asserts
V
ACC
to the WP/ACC pin, the device automatically enters the acceleration mode and the time required for program
operation will reduce to about 60
%
. This function is primarily intended to allow high speed programming, so
caution is needed as the sector group will temporarily be unprotected.
The system would use a fast program command sequence when programming during acceleration mode.
Set command to fast mode and reset command from fast mode are not necessary. When the device enters the
acceleration mode, the device is automatically set to fast mode. Therefore, the present sequence could be used
for programming and detection of completion during acceleration mode.
Removing V
ACC
from the WP/ACC pin returns the device to normal operation. Do not remove V
ACC
from WP/
ACC pin while programming. See Figure 21.
相關(guān)PDF資料
PDF描述
MBM29DL640E12 64 M (8 M X 8/4 M X 16) BIT Dual Operation
MBM29DL640E12PBT 64 M (8 M X 8/4 M X 16) BIT Dual Operation
MBM29DL640E12TN 64 M (8 M X 8/4 M X 16) BIT Dual Operation
MBM29DL640E12TR 64 M (8 M X 8/4 M X 16) BIT Dual Operation
MBM29DL640E80 64 M (8 M X 8/4 M X 16) BIT Dual Operation
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MBM29DL640E12 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:64 M (8 M X 8/4 M X 16) BIT Dual Operation
MBM29DL640E12PBT 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:64 M (8 M X 8/4 M X 16) BIT Dual Operation
MBM29DL640E12TN 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:64 M (8 M X 8/4 M X 16) BIT Dual Operation
MBM29DL640E12TR 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:64 M (8 M X 8/4 M X 16) BIT Dual Operation
MBM29DL640E80 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:64 M (8 M X 8/4 M X 16) BIT Dual Operation
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