A49FL004 データシートの表示（PDF） - AMIC Technology
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A49FL004 Datasheet PDF : 36 Pages
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Table 10: Block Lock Register Bit Definition
A49FL004
Data
00h
01h
02h
03h
04h
05h
06h
07h
Reserved
Bit 7:3
00000
00000
00000
00000
00000
00000
00000
00000
Read-Lock
Bit 2
0
0
0
0
1
1
1
1
Lock-Down
Bit 1
0
0
1
1
0
0
1
1
Write-Lock
Bit 0
Function
0
Full Access.
1
Write locked. Default state at power-up.
0
Locked open (full access locked down).
1
Write-locked down.
0
Read locked.
1
Read and Write locked.
0
Read-locked down
1
Read-locked and Write-locked down
Data
7:3
2
1
0
Function
Reserved
Read-Lock
1 = Prevents read operations in the block where set
0 = Normal operation for reads in the block where clear. This is the default state.
Lock-Down
1 = Prevents further set or clear operations to the Write-Lock and Read-Lock bits. Lock-Down only can be set
but not clear. The block will remain lock-down until reset (with RST or INIT ), or until the device
is power-on reset.
0 = Normal operation for Write-Lock and Read-Lock bit altering in the block where clear. This is the default state.
Write-Lock
1 = Prevents program or erase operations in the block where set. This is the default state.
0 = Normal operation for programming and erase in the block where clear.
PRELIMINARY (September, 2005, Version 0.0)
14
AMIC Technology, Corp.
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