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參數(shù)資料
| 型號： | 28F008SA |
| 廠商： | Intel Corp. |
| 英文描述： | 8-MBIT (1-MBIT x 8) FlashFileTM MEMORY |
| 中文描述： | 8兆（1兆位× 8）FlashFileTM記憶 |
| 文件頁數(shù)： | 26/49頁 |
| 文件大?。?/td> | 408K |
| 代理商： | 28F008SA |
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SMART 3 ADVANCED BOOT BLOCK
–BYTE-WIDE
E
26
PRELIMINARY
3.3
Block Locking
The Smart 3 Advanced Boot Block flash memory
architecture
features
parameter blocks so that the kernel code for the
system can be kept secure while other parameter
blocks are programmed or erased as necessary.
two
hardware-lockable
3.3.1
V
= V
FOR COMPLETE
PROTECTION
The V
PP
programming voltage can be held low for
complete write protection of all blocks in the flash
device. When V
is below V
, any program or
erase operation will result in a error, prompting the
corresponding Status Register bit (SR.3) to be set.
3.3.2
WP# = V
IL
FOR BLOCK LOCKING
The lockable blocks are locked when WP# = V
IL
;
any program or erase operation to a locked block
will result in an error, which will be reflected in the
status register. For top configuration, the top two
parameter blocks (blocks #37 and #38 for the
16-Mbit, and blocks #21 and #22 for the 8-Mbit) are
lockable. For the bottom configuration, the bottom
two parameter blocks (blocks #0 and #1 for 8-/16-
Mbit) are lockable. Unlocked blocks can be
programmed or erased normally (unless V
PP
is
below V
PPLK
).
3.3.3
WP# = V
IH
FOR BLOCK UNLOCKING
WP# = V
IH
unlocks all lockable blocks.
These blocks can now be programmed or erased.
Note that RP# does not override WP# locking as in
previous Boot Block devices. WP# controls all block
locking and V
PP
provides protection against
spurious writes. Table 8 defines the write protection
methods.
3.4
V
PP
Program and Erase
Voltages
Intel’s Smart 3 products provide in-system
programming and erase at 2.7V–3.6V V
PP
. For
customers requiring fast programming in their
manufacturing environment, Smart 3 Advanced
Boot Block includes an additional low-cost,
backward-compatible 12V programming feature.
The 12V V
PP
mode enhances programming
performance during the short period of time typically
found in manufacturing processes; however, it is
not intended for extended use. 12V may be applied
to V
PP
during program and erase operations for a
maximum of 1000 cycles on the main blocks and
2500 cycles on the parameter blocks. V
PP
may be
connected to 12V for a total of 80 hours maximum.
Stressing the device beyond these limits may cause
permanent damage.
Table 8. Write Protection Truth Table for
Advanced Boot Block Flash Memory Family
V
PP
WP#
RP#
Write Protection
Provided
X
X
V
IL
All Blocks Locked
V
IL
X
V
IH
All Blocks Locked
≥
V
PPLK
V
IL
V
IH
Lockable Blocks
Locked
≥
V
PPLK
V
IH
V
IH
All Blocks Unlocked
3.5
Power Consumption
While in operation, the flash device consumes
active power. However, Intel flash devices have a
three-tiered approach to power savings that can
significantly
reduce
overall
consumption. The Automatic Power Savings (APS)
feature reduces power consumption when the
device is idle. If the CE# is deasserted, the flash
enters
its
standby
consumption is even lower. If RP# = V
IL
the flash
enters a deep power-down mode, where current is
at a minimum. The combination of these features
can minimize overall memory power consumption,
and therefore, overall system power consumption.
system
power
mode,
where
current
3.5.1
ACTIVE POWER
With CE# at a logic-low level and RP# at a logic-
high level, the device is in the active mode. Refer to
the DC Characteristics tables for I
CC
current values.
Active power is the largest contributor to overall
system power consumption. Minimizing the active
current could have a profound effect on system
power consumption, especially for battery-operated
devices.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 28F008SA-L | 8-MBIT (1 MBIT x 8) FLASHFILETM MEMORY |
| 28F008S3 | 3 V FlashFile Memory(3V閃速存儲器) |
| 28F016S3 | 3 V FlashFile Memory(3V閃速存儲器) |
| 28F008S5 | 8-MBIT 5 VOLT FlashFile Memory(8M位5V閃速存儲器) |
| 28F016S5 | 16-MBIT 5V FlashFile Memory(16M位5V閃速存儲器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 28F008SA-L | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:8 MBIT (1 MBIT x 8) FLASH MEMORY |
| 28F008SAT-ZW | 制造商: 功能描述: 制造商:undefined 功能描述: |
| 28F008SC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BYTE-WIDE SmartVoltage FlashFile MEMORY FAMILY 4. 8. AND 16 MBIT |
| 28F010 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:1024K (128K x 8) CMOS FLASH MEMORY |
| 28F0101024K | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:28F010 1024K (128K X 8) CMOS FLASH MEMORY |
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