lrs1386 Sharp Microelectronics of the Americas, lrs1386 Datasheet - Page 13

• Manufacturer Part Number: lrs1386
• Description: Flash Memory
• Manufacturer: Sharp Microelectronics of the Americas

5.4 OTP Block Address Map
5.5 Functions of Block Lock
Note:
1. OTP (One Time Program) block has the lock function which is different from those described above.
2. DQ
3. Erase and program are general terms, respectively, to express: block erase, full chip erase and (page buffer) program
4. At power-up or device reset, all blocks default to locked state and are not locked-down, that is, [001] (F-WP = 0) or [101]
5. When F-WP is driven to V
[000]
[001]
[011]
[100]
[101]
[110]
[111]
State
DQ
operations.
(F-WP = 1), regardless of the states before power-off or reset operation.
(5)
(4)
(4)
0
1
= 1: a block is locked; DQ
= 1: a block is locked-down; DQ
F-WP
0
0
0
1
1
1
1
(1)
DQ
and Block Lock-Down
IL
0
0
1
0
0
1
1
in [110] state, the state changes to [011] and the blocks are automatically locked.
1
(2)
0
= 0: a block is unlocked.
Current State
1
= 0: a block is not locked-down.
DQ
0
1
1
0
1
0
1
0
(2)
L R S1 3 8 6
Unlocked
Locked
Locked-down
Unlocked
Locked
Lock-down Disable
Lock-down Disable
State Name
Erase/Program Allowed
Yes
Yes
Yes
No
No
No
No
(3)
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