參數(shù)資料
型號(hào)： EN29F002AB-45JC
廠(chǎng)商： Electronic Theatre Controls, Inc.
英文描述： 2 Megabit (256K x 8-bit) Flash Memory
中文描述： 2兆位（256K × 8位）閃存
文件頁(yè)數(shù)： 13/35頁(yè)
文件大?。?/td> 431K
代理商： EN29F002AB-45JC
This Data Sheet may be revised by subsequent versions 2003 Eon Silicon Solution, Inc., www.essi.com.tw
or modifications due to changes in technical specifications.
Rev. A, Issue Date: 2003/03/26
EN29F002A / EN29F002AN
DATA PROTECTION
Power-up Write Inhibit
During power-up, the device automatically resets to READ mode and locks out write cycles. Even
with
CE
= V
IL
,
WE
= V
IL
and
OE
= V
IH
, the device will not accept commands on the rising edge of
W E
.
Low V
CC
Write Inhibit
During V
CC
power-up or power-down
,
the EN29F002A locks out write cycles to protect against any
unintentional writes. If V
CC
< V
LKO
, the command register is disabled and all internal program or
erase circuits are disabled. Under this condition, the device will reset to the READ mode.
Subsequent writes will be ignored until V
CC
> V
LKO.
Write “Noise” Pulse Protection
Noise pulses less than 5ns on
OE
,
CE
or
WE
will neither initiate a write cycle nor change the
command register.
Logical Inhibit
If
CE
=V
IH
or
WE
=V
IH
, writing is inhibited. To initiate a write cycle,
CE
and
W E
must be a logical
“zero”. If
CE
,
W E
, and
OE
are all logical zero (not recommended usage), it will be considered a
write.
Sector Protection/Unprotection
When the device is shipped, all sectors are unprotected. Each sector can be separately protected
against data changes. Using hardware protection circuitry enabled at user’s site with external
programming equipment, both program and erase operations may be disabled for any specified
sector or combination of sectors.
Verification of write protection for a specific sector can be achieved with an Auto Select ID read
command at location 02h where the address bits A17 - A13 select the defined sector (see Table 5).
A logical “1” at DQ0 means a protected sector and a logical “0” means an unprotected sector.
The Sector Unprotect disables sector protection in all sectors in one operation to implement code
changes. All sectors must be placed in protection mode using the protection algorithm mentioned
above before unprotection can be executed.
Additional details on this feature are provided in a supplement, which can be obtained by contacting
a representative of Eon Silicon Solution, Inc.
相關(guān)PDF資料
PDF描述
EN29F002AB-45JCP 2 Megabit (256K x 8-bit) Flash Memory
EN29F002AB-45JI 2 Megabit (256K x 8-bit) Flash Memory
EN29F002AB-45JIP 2 Megabit (256K x 8-bit) Flash Memory
EN29F002AB-45PC 2 Megabit (256K x 8-bit) Flash Memory
EN29F002AB-45PCP 2 Megabit (256K x 8-bit) Flash Memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EN29F002AB-45JCP 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:2 Megabit (256K x 8-bit) Flash Memory
EN29F002AB-45JI 制造商:EON 制造商全稱(chēng):Eon Silicon Solution Inc. 功能描述:2 Megabit (256K x 8-bit) Flash Memory
EN29F002AB-45JIP 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:2 Megabit (256K x 8-bit) Flash Memory
EN29F002AB-45PC 制造商:EON 制造商全稱(chēng):Eon Silicon Solution Inc. 功能描述:2 Megabit (256K x 8-bit) Flash Memory
EN29F002AB-45PCP 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:2 Megabit (256K x 8-bit) Flash Memory
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