參數(shù)資料
型號(hào)： 28F320B3
廠商： Intel Corp.
英文描述： SMART 3 ADVANCED BOOT BLOCK 4-, 8-, 16-, 32-MBIT FLASH MEMORY FAMILY
中文描述： 智能高級(jí)啟動(dòng)3座4 - ，8 - ，16 - ，32 - Mbit閃存家庭
文件頁(yè)數(shù)： 36/82頁(yè)
文件大小： 749K
代理商： 28F320B3
28F6408W30, 28F3204W30, 28F320W30, 28F640W30
30
Preliminary
8.2
Block Unlock
Unlocked blocks (states [000], [100], [110]) can be programmed or erased. All unlocked blocks
return to locked when the device is reset or powered down. An unlocked block can be locked or
locked-down using the appropriate software commands. If it
’
s not locked-down, a locked block can
be unlocked by writing the Unlock Block command sequence.
8.3
Lock-Down Block
Locked-down blocks (state [011]) are protected from program and erase operations, but unlike
locked blocks, software commands alone cannot change their protection status. A locked-down
block can only be unlocked when WP# is high. When WP# is low, all locked-down blocks revert to
locked. A locked or unlocked block can be locked-down by writing the Lock-Down Block
command sequence. Locked-down blocks revert to the locked state at device reset or power-down.
8.4
Block Lock Operations during Erase Suspend
Block lock configurations can be performed during an erase suspend by using the standard locking
command sequences to unlock, lock, or lock-down a block. Useful when another block requires
immediate updating.
To change block locking during an erase operation, first write the Erase Suspend command. After
checking SR.6 to determine that the erase operation has suspended, write the desired lock
command sequence to a block; the lock status will be changed. After completing lock, unlock,
read, or program operations, resume the erase operation with the Erase Resume command (D0h).
If a block is locked or locked-down during a suspended erase of the same block, the locking status
bits will change immediately. But when resumed, the erase operation will complete.
Locking operations cannot occur during program suspend.
Appendix A,
“
Flash Write State
Machine (WSM)
”
shows valid commands during erase suspend.
8.5
WP# Lock-Down Control
WP# allows block lock-down to be overridden.
Table 14
defines device write protection
methodology.
WP# controls the lock-down function. WP# = V
IL
(0) protects locked-down blocks [011] from
program, erase, and lock status changes. When WP# = V
IH
(1), the locked-down blocks revert to
locked [111]. A software command can then individually unlock a block [110] for erase or
program. These blocks can then be re-locked [111] while WP# remains high. When WP# returns
low, previously locked-down blocks revert to the lock-down state [011] regardless of changes made
while WP# was high. Device reset or power-down resets all blocks to the locked state [101] or
[001].
相關(guān)PDF資料
PDF描述
28F640P3 Intel StrataFlash Embedded Memory
28F320C3 3 Volt Advanced Boot Block Flash Memory(3 V 高級(jí)快速引導(dǎo)塊閃速存儲(chǔ)器)
28F800C3 3 Volt Advanced Boot Block Flash Memory(3 V 高級(jí)快速引導(dǎo)塊閃速存儲(chǔ)器)
28F160C3 3 Volt Advanced Boot Block Flash Memory(3 V 高級(jí)快速引導(dǎo)塊閃速存儲(chǔ)器)
28F320D18 1.8 Volt Intel Dual-Plane Flash Memory(1.8 V Intel 雙平面閃速存儲(chǔ)器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
28F320C3 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Advanced+ Boot Block Flash Memory (C3)
28F320J3D75 制造商:undefined 功能描述:
28F320J5 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:StrataFlash MEMORY TECHNOLOGY 32 AND 64 MBIT
28F320J5_02 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:5 Volt Intel StrataFlash? Memory
28F320S3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:WORD-WIDE FlashFile MEMORY FAMILY
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