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| 型号： | EN29LV640T-90BIP |
| 厂商： | Eon Silicon Solution Inc. |
| 英文描述： | 64 Megabit (8M x 8-bit / 4M x 16-bit) Flash Memory Boot Sector Flash Memory, CMOS 3.0 Volt-only |
| 中文描述： | 64兆位（8米× 8位/分x 16位）闪存引导扇区闪存，CMOS 3.0伏，只 |
| 文件页数： | 15/53页 |
| 文件大小： | 495K |
| 代理商： | EN29LV640T-90BIP |
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This Data Sheet may be revised by subsequent versions
2004 Eon Silicon Solution, Inc., www.essi.com.tw
or modifications due to changes in technical specifications.
22
EN29LV640T/B
Rev. B, Issue Date: 2007/05/16
Hardware Data protection
The command sequence requirement of unlock cycles for programming or erasing provides data
protection against inadvertent writes as seen in the Command Definitions table. Additionally, the
following hardware data protection measures prevent accidental erasure or programming, which
might otherwise be caused by false system level signals during Vcc power up and power down
transitions, or from system noise.
Low V
B
CC
B
Write Inhibit
When Vcc is less than V
B
LKOB, the device does not accept any write cycles.
This protects data during
Vcc power up and power down. The command register and all internal program/erase circuits are
disabled, and the device resets. Subsequent writes are ignored until Vcc is greater than V
B
LKOB.
The
system must provide the proper signals to the control pins to prevent unintentional writes when Vcc
is greater than V
B
LKOB.
Write Pulse “Glitch” protection
Noise pulses of less than 5 ns (typical) on OE#, CE# or WE# do not initiate a write cycle.
Logical Inhibit
Write cycles are inhibited by holding any one of OE# = V
B
ILB, CE# = VBIHB, or WE# = VBIHB. To initiate a
write cycle, CE# and WE# must be a logical zero while OE# is a logical one. If CE#, WE#, and OE#
are all logical zero (not recommended usage), it will be considered a read.
Power-up Write Inhibit
During power-up, the device automatically resets to READ mode and locks out write cycles. Even
with CE# = V
B
ILB, WE#= VBILB and OE# = VBIHB, the device will not accept commands on the rising edge of
WE#.
相关PDF资料 |
PDF描述 |
|---|---|
| EN29LV640T-90BI | 64 Megabit (8M x 8-bit / 4M x 16-bit) Flash Memory Boot Sector Flash Memory, CMOS 3.0 Volt-only |
| EN29LV640T-90BP | 64 Megabit (8M x 8-bit / 4M x 16-bit) Flash Memory Boot Sector Flash Memory, CMOS 3.0 Volt-only |
| EN29LV640T-90B | 64 Megabit (8M x 8-bit / 4M x 16-bit) Flash Memory Boot Sector Flash Memory, CMOS 3.0 Volt-only |
| EN29LV640T-90TIP | 64 Megabit (8M x 8-bit / 4M x 16-bit) Flash Memory Boot Sector Flash Memory, CMOS 3.0 Volt-only |
| EN29LV640T-90TI | 64 Megabit (8M x 8-bit / 4M x 16-bit) Flash Memory Boot Sector Flash Memory, CMOS 3.0 Volt-only |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EN29LV800AB-70TC | 制造商:Eon Silicon Solution Inc 功能描述: |
| EN29LV800BB-70TCP | 制造商:EON SILICON SOLUTION INC 功能描述:EN29LV800B Series, 8 Mbit 70 NS 48 TSOP 3 V Bottom Boot Sector NOR Flash |
| EN29LV800CT-70TIP | 制造商:EON SILICON SOLUTION INC 功能描述:8mb TSOP 70ns nor flash |
| EN29SL400B-90BIP | 制造商:EON SILICON SOLUTION INC 功能描述:EN29SL400 Series, 4 Mbit 90 NS 48 FBGA 1.8 V Bottom Boot Sector NOR Flash |
| EN2-B1H1 | 制造商:NEC 制造商全称:NEC 功能描述:AUTOMOTIVE RELAYS (Twin, Single) Relays |
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