2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF002A / SST49LF003A / SST49LF004A / SST49LF008A
Advance Information
Block Locking Registers
SST49LF00xA 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 4 and Table 5. Unused register locations will read as 00H.
TABLE 4: BLOCK LOCKING REGISTERS FOR SST49LF002A1
Protected Memory
Address Package
Memory Map
Register Address
Register
Block Size
T_BLOCK_LK
T_MINUS01_LK
16K
3FFFFH - 3C000H
FFBF8002H
FFBF0002H
16K
16K
16K
3BFFFH - 38000H
37FFFH - 34000H
33FFFH - 30000H
T_MINUS02_LK
T_MINUS03_LK
T_MINUS04_LK
T_MINUS05_LK
T_MINUS06_LK
T_MINUS07_LK
16K
16K
2FFFFH - 2C000H
2BFFFH - 28000H
FFBE8002H
FFBE0002H
FFBD8002H
FFBD0002H
FFBC8002H
FFBC0002H
16K
16K
27FFFH - 24000H
23FFFH - 20000H
16K
16K
1FFFFH - 1C000H
1BFFFH - 18000H
16K
16K
17FFFH - 14000H
13FFFH - 10000H
16K
16K
0FFFFH - 0C000H
0BFFFH - 08000H
16K
16K
07FFFH - 04000H
03FFFH - 00000H
T4.1 504
1. Default value at power up is 01H
TABLE 5: BLOCK LOCKING REGISTERS FOR SST49LF003A/004A/008A1
Protected Memory Address Range
Block
Memory Map
Register
Size
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
64K
SST49LF003A
SST49LF004A
SST49LF008A
Register Address
FFBF0002H
FFBE0002H
FFBD0002H
FFBC0002H
FFBB0002H
FFBA0002H
FFB90002H
FFB80002H
FFB70002H
FFB60002H
FFB50002H
FFB40002H
FFB30002H
FFB20002H
FFB10002H
T_BLOCK_LK
07FFFFH - 070000H 07FFFFH - 070000H 0FFFFFH - 0F0000H
06FFFFH - 060000H 06FFFFH - 060000H 0EFFFFH - 0E0000H
05FFFFH - 050000H 05FFFFH - 050000H 0DFFFFH - 0D0000H
04FFFFH - 040000H 04FFFFH - 040000H 0CFFFFH - 0C0000H
03FFFFH - 030000H 03FFFFH - 030000H 0BFFFFH - 0B0000H
02FFFFH - 020000H 02FFFFH - 020000H 0AFFFFH - 0A0000H
01FFFFH - 010000H 09FFFFH - 090000H
00FFFFH - 000000H 08FFFFH - 080000H
07FFFFH - 070000H
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
06FFFFH - 060000H
05FFFFH - 050000H
04FFFFH - 040000H
03FFFFH - 030000H
02FFFFH - 020000H
01FFFFH -010000H
00FFFFH - 000000H
FFB00002H
T5.2 504
1. Default value at power up is 01H
©2001 Silicon Storage Technology, Inc.
S71161-06-000 9/01 504
7
SST [ SILICON STORAGE TECHNOLOGY, INC ]
