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2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub

SST49LF002A / SST49LF003A / SST49LF004A / SST49LF008A

7

©2001 Silicon Storage Technology, Inc.

S71161-06-000

9/01

504

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

1. Default value at power up is 01H

Register

Block Size

Protected Memory

Address Package

Memory Map

Register Address

T_BLOCK_LK

16K

3FFFFH - 3C000H

FFBF8002H

T_MINUS01_LK

16K

16K

16K

3BFFFH - 38000H

37FFFH - 34000H

33FFFH - 30000H

FFBF0002H

T_MINUS02_LK

16K

16K

2FFFFH - 2C000H

2BFFFH - 28000H

FFBE8002H

T_MINUS03_LK

16K

16K

27FFFH - 24000H

23FFFH - 20000H

FFBE0002H

T_MINUS04_LK

16K

16K

1FFFFH - 1C000H

1BFFFH - 18000H

FFBD8002H

T_MINUS05_LK

16K

16K

17FFFH - 14000H

13FFFH - 10000H

FFBD0002H

T_MINUS06_LK

16K

16K

0FFFFH - 0C000H

0BFFFH - 08000H

FFBC8002H

T_MINUS07_LK

16K

16K

07FFFH - 04000H

03FFFH - 00000H

FFBC0002H

T4.1 504

TABLE

1. Default value at power up is 01H

Register

Block

Size

Protected Memory Address Range

Memory Map

Register Address

SST49LF003A

SST49LF004A

SST49LF008A

T_BLOCK_LK

64K

07FFFFH - 070000H

07FFFFH - 070000H

0FFFFFH - 0F0000H

FFBF0002H

T_MINUS01_LK

64K

06FFFFH - 060000H

06FFFFH - 060000H

0EFFFFH - 0E0000H

FFBE0002H

T_MINUS02_LK

64K

05FFFFH - 050000H

05FFFFH - 050000H

0DFFFFH - 0D0000H

FFBD0002H

T_MINUS03_LK

64K

04FFFFH - 040000H

04FFFFH - 040000H

0CFFFFH - 0C0000H

FFBC0002H

T_MINUS04_LK

64K

03FFFFH - 030000H

03FFFFH - 030000H

0BFFFFH - 0B0000H

FFBB0002H

T_MINUS05_LK

64K

02FFFFH - 020000H

02FFFFH - 020000H

0AFFFFH - 0A0000H

FFBA0002H

T_MINUS06_LK

64K

01FFFFH - 010000H

09FFFFH - 090000H

FFB90002H

T_MINUS07_LK

64K

00FFFFH - 000000H

08FFFFH - 080000H

FFB80002H

T_MINUS08_LK

64K

07FFFFH - 070000H

FFB70002H

T_MINUS09_LK

64K

06FFFFH - 060000H

FFB60002H

T_MINUS10_LK

64K

05FFFFH - 050000H

FFB50002H

T_MINUS11_LK

64K

04FFFFH - 040000H

FFB40002H

T_MINUS12_LK

64K

03FFFFH - 030000H

FFB30002H

T_MINUS13_LK

64K

02FFFFH - 020000H

FFB20002H

T_MINUS14_LK

64K

01FFFFH -010000H

FFB10002H

T_MINUS15_LK

64K

00FFFFH - 000000H

FFB00002H

T5.2 504