AM29SL160C datasheet(17/52 Pages) AMD

17 / 52 page

January 23, 2007 21635C5

Am29SL160C

D A TA

SH EE T

Sector/Sector Block Protection and

Unprotection

(Note: For the following discussion, the term “sector”

applies to both sectors and sector blocks. A sector

block consists of two or more adjacent sectors that are

protected or unprotected at the same time (see Table 5

and Table 6).

Table 5.

Top Boot Sector/Sector Block Addresses

for Protection/Unprotection

Table 6.

Bottom Boot Sector/Sector Block

Addresses for Protection/Unprotection

The hardware sector protection feature disables both

program and erase operations in any sector. The hard-

ware sector unprotection feature re-enables both

program and erase operations in previously protected

sectors. Sector protection/unprotection is implemented

via two methods.

Sector / Sector

Block

A19–A12

Sector / Sector Block Size

SA0

00000XXX

64 Kbytes

SA1-SA3

00001XXX,

00010XXX,

00011XXX

192 (3x64) Kbytes

SA4-SA7

001XXXXX

256 (4x64) Kbytes

SA8-SA11

010XXXXX

256 (4x64) Kbytes

SA12-SA15

011XXXXX

256 (4x64) Kbytes

SA16-SA19

100XXXXX

256 (4x64) Kbytes

SA20-SA23

101XXXXX

256 (4x64) Kbytes

SA24-SA27

110XXXXX

256 (4x64) Kbytes

SA28-SA30

11100XXX,

11101XXX,

11110XXX

192 (3x64) Kbytes

SA31

11111000

8 Kbytes

SA32

11111001

8 Kbytes

SA33

11111010

8 Kbytes

SA34

11111011

8 Kbytes

SA35

11111100

8 Kbytes

SA36

11111101

8 Kbytes

SA37

11111110

8 Kbytes

SA38

11111111

8 Kbytes

Sector / Sector

Block

A19–A12

Sector / Sector Block Size

SA38

11111XXX

64 Kbytes

SA37-SA35

11110XXX,

11101XXX,

11100XXX

192 (3x64) Kbytes

SA34-SA31

110XXXXX

256 (4x64) Kbytes

SA30-SA27

101XXXXX

256 (4x64) Kbytes

SA26-SA23

100XXXXX

256 (4x64) Kbytes

SA22-SA19

011XXXXX

256 (4x64) Kbytes

SA18-SA15

010XXXXX

256 (4x64) Kbytes

SA14-SA11

001XXXXX

256 (4x64) Kbytes

SA10-SA8

00001XXX,

00010XXX,

00011XXX

192 (3x64) Kbytes

SA7

00000111

8 Kbytes

SA6

00000110

8 Kbytes

SA5

00000101

8 Kbytes

SA4

00000100

8 Kbytes

SA3

00000011

8 Kbytes

SA2

00000010

8 Kbytes

SA1

00000001

8 Kbytes

SA0

00000000

8 Kbytes

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