LH28F640BFHE-PBTLHGA Sharp Electronics, LH28F640BFHE-PBTLHGA Datasheet - Page 14

• Manufacturer Part Number: LH28F640BFHE-PBTLHGA
• Manufacturer: Sharp Electronics

Specifications of LH28F640BFHE-PBTLHGA

• Lead Free Status / Rohs Status: Supplier Unconfirmed

NOTES:
1. DQ
2. Erase and program are general terms, respectively, to express: block erase, full chip erase and
3. At power-up or device reset, all blocks default to locked state and are not locked-down, that is,
4. When WP# is driven to V
5. OTP (One Time Program) block has the lock function which is different from those described
NOTES:
1. "Set Lock" means Set Block Lock Bit command, "Clear Lock" means Clear Block Lock Bit
2. When the Set Block Lock-Down Bit command is written to the unlocked block (DQ
3. "No Change" means that the state remains unchanged after the command written.
4. In this state transitions table, assumes that WP# is not changed and fixed V
[000]
[001]
[011]
[100]
[101]
[110]
[111]
State
(page buffer) program operations.
[001] (WP#=0) or [101] (WP#=1), regardless of the states before power-off or reset operation.
automatically locked.
above.
command and "Set Lock-down" means Set Block Lock-Down Bit command.
corresponding block is locked-down and automatically locked at the same time.
DQ
[000]
[001]
[011]
[100]
[101]
[110]
[111]
State
0
1
=1: a block is locked; DQ
=1: a block is locked-down; DQ
(3)
(3)
(4)
Current State
WP#
0
0
0
1
1
1
1
WP#
Table 8. Block Locking State Transitions upon Command Write
0
0
0
1
1
1
1
DQ
0
0
1
0
0
1
1
Table 7. Functions of Block Lock
1
DQ
DQ
0
0
1
0
0
1
1
0
1
1
0
1
0
1
1
(1)
0
Current State
IL
0
=0: a block is unlocked.
in [110] state, the state changes to [011] and the blocks are
DQ
No Change
0
1
1
0
1
0
1
Set Lock
No Change
No Change
No Change
0
(1)
1
=0: a block is not locked-down.
Result after Lock Command Written (Next State)
[001]
[101]
[111]
LHF64FHG
Unlocked
Unlocked
Locked
Locked-down
Locked
Lock-down Disable
Lock-down Disable
(1)
(3)
State Name
(5)
Clear Lock
and Block Lock-Down
No Change
No Change
No Change
No Change
[000]
[100]
[110]
(1)
Erase/Program Allowed
IL
Set Lock-down
or V
(4)
No Change
No Change
[011]
[111]
[111]
IH
[011]
[111]
Yes
Yes
Yes
.
No
No
No
No
(2)
(2)
(2)
0
=0), the
(1)
Rev. 2.45
(2)
12