參數(shù)資料
型號(hào)： LH28F320BFHE-PBTL60
廠商： Sharp Corporation
英文描述： 32M (x16) Flash Memory
中文描述： 32M的（x16）的快閃記憶體
文件頁(yè)數(shù)： 14/37頁(yè)
文件大?。?/td> 693K
代理商： LH28F320BFHE-PBTL60
LHF32FB4 12
NOTES:
1. DQ
0
=1: a block is locked; DQ
0
=0: a block is unlocked.
DQ
1
=1: a block is locked-down; DQ
1
=0: a block is not locked-down.
2. Erase and program are general terms, respectively, to express: block erase, full chip erase and
(page buffer) program operations.
3. At power-up or device reset, all blocks default to locked state and are not locked-down, that is,
[001] (WP#/ACC=0) or [101] (WP#/ACC=1), regardless of the states before power-off or reset
operation.
4. When WP#/ACC is driven to V
IL
in [110] state, the state changes to [011] and the blocks are
automatically locked.
5. OTP (One Time Program) block has the lock function which is different from those described
above.
NOTES:
1. "Set Lock" means Set Block Lock Bit command, "Clear Lock" means Clear Block Lock Bit
command and "Set Lock-down" means Set Block Lock-Down Bit command.
2. When the Set Block Lock-Down Bit command is written to the unlocked block (DQ
0
=0), the
corresponding block is locked-down and automatically locked at the same time.
3. "No Change" means that the state remains unchanged after the command written.
4. In this state transitions table, assumes that WP#/ACC is not changed and fixed V
IL
or V
IH
.
Table 7. Functions of Block Lock
(5)
and Block Lock-Down
Current State
Erase/Program Allowed
(2)
State
WP#/ACC
DQ
1(1)
0
0
DQ
0(1)
0
1
State Name
[000]
0
0
Unlocked
Locked
Yes
No
[001]
(3)
[011]
[100]
0
1
1
1
0
0
1
0
1
Locked-down
Unlocked
Locked
No
Yes
No
[101]
(3)
[110]
(4)
[111]
1
1
0
Lock-down Disable
Yes
1
1
1
Lock-down Disable
No
Table 8. Block Locking State Transitions upon Command Write
(4)
Current State
Result after Lock Command Written (Next State)
State
WP#/ACC
DQ
1
DQ
0
Set Lock
(1)
Clear Lock
(1)
Set Lock-down
(1)
[000]
0
0
0
[001]
No Change
[011]
(2)
[011]
[001]
0
0
1
No Change
(3)
No Change
[101]
[000]
[011]
[100]
0
1
1
0
1
0
No Change
No Change
No Change
[111]
(2)
[111]
[101]
[110]
1
1
0
1
1
0
No Change
[111]
[100]
No Change
[111]
(2)
No Change
[111]
1
1
1
No Change
[110]
Rev. 2.44
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