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參數(shù)資料
| 型號(hào)： | EN29F040-70J |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 4 Megabit (512K x 8-bit) Flash Memory |
| 中文描述： | 4兆位（為512k × 8位）閃存 |
| 文件頁數(shù)： | 14/32頁 |
| 文件大小： | 223K |
| 代理商： | EN29F040-70J |
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14
EN29F040
Rev. D, Issue Date: 2001/07/05
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 EN20F040 locks out write cycles to protect against any
unintentional writes. If V
CC
< V
LOK
, 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 Protect and Unprotect
The hardware sector protection feature disables both program and erase operations in any sector.
The hardware sector unprotection feature re-enables both program and erase operation in previously
protected sectors.
Sector protection/unprotection must be implemented using programming equipment. The procedure
requires a high voltage (V
ID
) on address pin A9 and the control pins. Contact Eon Silicon Devices,
Inc. for an additional supplement on this feature.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EN29F040-70JI | 4 Megabit (512K x 8-bit) Flash Memory |
| EN29F040-70P | 4 Megabit (512K x 8-bit) Flash Memory |
| EN29F040-70PI | 4 Megabit (512K x 8-bit) Flash Memory |
| EN29F040-70T | 4 Megabit (512K x 8-bit) Flash Memory |
| EN29F040-70TI | 4 Megabit (512K x 8-bit) Flash Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EN29F040-70JI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4 Megabit (512K x 8-bit) Flash Memory |
| EN29F040-70P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4 Megabit (512K x 8-bit) Flash Memory |
| EN29F040-70PI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4 Megabit (512K x 8-bit) Flash Memory |
| EN29F040-70T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4 Megabit (512K x 8-bit) Flash Memory |
| EN29F040-70TI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4 Megabit (512K x 8-bit) Flash Memory |
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