SST49LF008A データシートの表示（PDF） - Microchip Technology
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SST49LF008A Datasheet PDF : 45 Pages
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A Microchip Technology Company
8 Mbit Firmware Hub
SST49LF008A
Data Sheet
Block Locking Registers
SST49LF008A provides software controlled lock protection through a set of Block Locking registers.
The Block Locking Registers are read/write registers and it is accessible through standard addressable
memory locations specified in Table 6. Unused register locations will read as 00H.
Table 6: Block Locking Registers for SST49LF008A1
Register
T_BLOCK_LK
T_MINUS01_LK
T_MINUS02_LK
T_MINUS03_LK
T_MINUS04_LK
T_MINUS05_LK
T_MINUS06_LK
T_MINUS07_LK
T_MINUS08_LK
T_MINUS09_LK
T_MINUS10_LK
T_MINUS11_LK
T_MINUS12_LK
T_MINUS13_LK
T_MINUS14_LK
T_MINUS15_LK
Block Size
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
Protected Memory Address Range
0FFFFFH - 0F0000H
0EFFFFH - 0E0000H
0DFFFFH - 0D0000H
0CFFFFH - 0C0000H
0BFFFFH - 0B0000H
0AFFFFH - 0A0000H
09FFFFH - 090000H
08FFFFH - 080000H
07FFFFH - 070000H
06FFFFH - 060000H
05FFFFH - 050000H
04FFFFH - 040000H
03FFFFH - 030000H
02FFFFH - 020000H
01FFFFH -010000H
00FFFFH - 000000H
1. Default value at power up is 01H
Memory Map Register Address
FFBF0002H
FFBE0002H
FFBD0002H
FFBC0002H
FFBB0002H
FFBA0002H
FFB90002H
FFB80002H
FFB70002H
FFB60002H
FFB50002H
FFB40002H
FFB30002H
FFB20002H
FFB10002H
FFB00002H
T6.4 25085
Table 7: Block Locking Register Bits
Reserved Bit [7..2]
000000
000000
000000
000000
Lock-Down Bit [1]
0
0
1
1
Write-Lock Bit [0]
0
1
0
1
Lock Status
Full Access
Write Locked (Default State at Power-Up)
Locked Open (Full Access Locked Down)
Write Locked Down
T7.3 25085
©2011 Silicon Storage Technology, Inc.
15
DS25085A
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