AM29LV2562M AMD [Advanced Micro Devices], AM29LV2562M Datasheet - Page 27

• Manufacturer Part Number: AM29LV2562M
• Manufacturer: AMD [Advanced Micro Devices]

Sector Group Protection and Unprotection
The hardware sector group protection feature disables
both program and erase operations in any sector
group. The hardware sector group unprotection fea-
ture re-enables both program and erase operations in
previously protected sector groups. Sector group pro-
tection/unprotection can be implemented via two
methods.
Sector group protection/unprotection requires V
the RESET# pin only, and can be implemented either
in-system or via programming equipment. Figure 2
shows the algorithms and Figure 23 shows the timing
diagram. For sector group unprotect, all unprotected
sector groups must first be protected prior to the first
sector group unprotect write cycle. Note that the sec-
tor group unprotect algorithm unprotects all sector
groups in parallel. All previously protected sector
groups must be individually re-protected.
The device is shipped with all sector groups unpro-
tected. AMD offers the option of programming and pro-
tecting sector groups at its factory prior to shipping the
device through AMD’s ExpressFlash™ Service. Con-
tact an AMD representative for details.
It is possible to determine whether a sector group is
protected or unprotected. See the
section for details.
December 16, 2005
Table 4. Sector Group Protection/Unprotection
Sector Group
SA12–SA15
SA16–SA19
SA20–SA23
SA24–SA27
SA28–SA31
SA32–SA35
SA36–SA39
SA40–SA43
SA44–SA47
SA48–SA51
SA52–SA55
SA56–SA59
SA60–SA63
SA64–SA67
SA8–SA11
SA4–SA7
SA0
SA1
SA2
SA3
Address Table
000000000
000000001
000000010
000000011
0000001xx
0000010xx
0000011xx
0000100xx
0000101xx
0000110xx
0000111xx
0001000xx
0001001xx
0001010xx
0001011xx
0001100xx
0001101xx
0001110xx
0001111xx
0010000xx
Autoselect Mode
A23–A15
D A T A S H E E T
Am29LV2562M
ID
on
SA100–SA103
SA104–SA107
SA108–SA111
SA112–SA115
SA116–SA119
SA120–SA123
SA124–SA127
SA128–SA131
SA132–SA135
SA136–SA139
SA140–SA143
SA144–SA147
SA148–SA151
SA152–SA155
SA156–SA159
SA160–SA163
SA164–SA167
SA168–SA171
SA172–SA175
SA176–SA179
SA180–SA183
SA184–SA187
SA188–SA191
SA192–SA195
SA196–SA199
SA200–SA203
SA204–SA207
SA208–SA211
SA212–SA215
SA216–SA219
SA220–SA223
SA224–SA227
SA228–SA231
SA232–SA235
SA236–SA239
SA240–SA243
SA244–SA247
Sector Group
SA68–SA71
SA72–SA75
SA76–SA79
SA80–SA83
SA84–SA87
SA88–SA91
SA92–SA95
SA96–SA99
0010001xx
0010010xx
0010011xx
0010100xx
0010101xx
0010110xx
0010111xx
0011000xx
0011001xx
0011010xx
0011011xx
0011100xx
0011101xx
0011110xx
0011111xx
0100000xx
0100001xx
0100010xx
0100011xx
0100100xx
0100101xx
0100110xx
0100111xx
0101000xx
0101001xx
0101010xx
0101011xx
0101100xx
0101101xx
0101110xx
0101111xx
0110000xx
0110001xx
0110010xx
0110011xx
0110100xx
0110101xx
0110110xx
0110111xx
0111000xx
0111001xx
0111010xx
0111011xx
0111100xx
0111101xx
A23–A15
25