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AM29PDS322DB12 데이터시트(PDF) 18 Page - SPANSION

부품명 AM29PDS322DB12
상세설명  32 Megabit (2 M x 16-Bit) CMOS 1.8 Volt-only (1.8 V to 2.2 V) Simultaneous Read/Write Page-Mode Boot Sector Flash Memory
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Am29PDS322D
23569A5 December 4, 2006
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 Tables
8 and 9).
Table 8.
Top Boot Sector/Sector Block Addresses
for Protection/Unprotection
Table 9.
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 and unprotection can be im-
plemented via two methods.
The primary method requires V
ID on the RESET# pin
only, and can be implemented either in-system or via
programming equipment. Figure 3 shows the algo-
rithms and Figure 26 shows the timing diagram. This
method uses standard microprocessor bus cycle tim-
ing. For sector unprotect, all unprotected sectors must
first be protected prior to the first sector unprotect
write cycle.
Sector
Group
Sectors
A20–A12
Sector/
Sector Block Size
SGA0
SA0
000000XXX
64 (1x64) Kbytes
SGA1
SA1–SA3
00001XXXX
192 (3x64) Kbytes
SGA2
SA4–SA7
0001XXXXX
256 (4x64) Kbytes
SGA3
SA8–SA11
0010XXXXX
256 (4x64) Kbytes
SGA4
SA12–SA15
0011XXXXX
256 (4x64) Kbytes
SGA5
SA16–SA19
0100XXXXX
256 (4x64) Kbytes
SGA6
SA20–SA23
0101XXXXX
256 (4x64) Kbytes
SGA7
SA24–SA27
0110XXXXX
256 (4x64) Kbytes
SGA8
SA28–SA31
0111XXXXX
256 (4x64) Kbytes
SGA9
SA32–SA35
1000XXXXX
256 (4x64) Kbytes
SGA10
SA36–SA39
1001XXXXX
256 (4x64) Kbytes
SGA11
SA40–SA43
1010XXXXX
256 (4x64) Kbytes
SGA12
SA44–SA47
1011XXXXX
256 (4x64) Kbytes
SGA13
SA48–SA51
1100XXXXX
256 (4x64) Kbytes
SGA14
SA52–SA55
1101XXXXX
256 (4x64) Kbytes
SGA15
SA56–SA59
1110XXXXX
256 (4x64) Kbytes
SGA16
SA60–SA62
111100XXX
192 (3x64) Kbytes
SGA17
SA63
111111000
8 Kbytes
SGA18
SA64
111111001
8 Kbytes
SGA19
SA65
111111010
8 Kbytes
SGA20
SA66
111111011
8 Kbytes
SGA21
SA67
111111100
8 Kbytes
SGA22
SA68
111111101
8 Kbytes
SGA23
SA69
111111110
8 Kbytes
SGA24
SA70
111111111
8 Kbytes
Sector
Group
Sectors
A20–A12
Sector/Sector
Block Size
SGA0
SA70
111111XXX
64 (1x64) Kbytes
SGA1
SA69–SA67
11110XXXX
192 (3x64) Kbytes
SGA2
SA66–SA63
1110XXXXX
256 (4x64) Kbytes
SGA3
SA62–SA59
1101XXXXX
256 (4x64) Kbytes
SGA4
SA58–SA55
1100XXXXX
256 (4x64) Kbytes
SGA5
SA54–SA51
1011XXXXX
256 (4x64) Kbytes
SGA6
SA50–SA47
1010XXXXX
256 (4x64) Kbytes
SGA7
SA46–SA43
1001XXXXX
256 (4x64) Kbytes
SGA8
SA42–SA39
1000XXXXX
256 (4x64) Kbytes
SGA9
SA38–SA35
0111XXXXX
256 (4x64) Kbytes
SGA10
SA34–SA31
0110XXXXX
256 (4x64) Kbytes
SGA11
SA30–SA27
0101XXXXX
256 (4x64) Kbytes
SGA12
SA26–SA23
0100XXXXX
256 (4x64) Kbytes
SGA13
SA22–SA19
0011XXXXX
256 (4x64) Kbytes
SGA14
SA18–SA15
0010XXXXX
256 (4x64) Kbytes
SGA15
SA14–SA11
0001XXXXX
256 (4x64) Kbytes
SGA16
SA10–SA8
000011XXX
192 (3x64) Kbytes
SGA17
SA7
000000111
8 Kbytes
SGA18
SA6
000000110
8 Kbytes
SGA19
SA5
000000101
8 Kbytes
SGA20
SA4
000000100
8 Kbytes
SGA21
SA3
000000011
8 Kbytes
SGA22
SA2
000000010
8 Kbytes
SGA23
SA1
000000001
8 Kbytes
SGA24
SA0
000000000
8 Kbytes


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