AM29LV320DT90EI AMD (ADVANCED MICRO DEVICES), AM29LV320DT90EI Datasheet - Page 19

• Manufacturer Part Number: AM29LV320DT90EI
• Description: Flash Memory IC
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AM29LV320DT90EI

• Memory Configuration: 4M X 8 / 2M X 16 Bit
• Package/case: 48-TSOP
• Supply Voltage Max: 3.6V
• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Access Time, Tacc: 90nS
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Sector/Sector Block Protection and
Unprotection
The hardware sector protection feature disables both
program and erase operations in any sector. The hard-
ware sector unprotection feature re-enables both pro-
gram and erase operations in previously protected
sectors. Sector protection/unprotection can be imple-
mented via two methods.
(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 7 on page 17 and Table 8 on page 17).
Table 7. Top Boot Sector/Sector Block Addresses
December 14, 2005
Sector / Sector
Sector / Sector
Table 8. Bottom Boot Sector/Sector Block
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-SA62
SA70-SA67
SA66-SA63
SA8-SA11
SA0-SA3
SA4-SA7
Block
Addresses for Protection/Unprotection
Block
SA63
SA64
SA65
SA66
SA67
SA68
SA69
SA70
for Protection/Unprotection
000000XXX,
000001XXX,
0001XXXXX
0010XXXXX
0011XXXXX
0100XXXXX
0101XXXXX
0110XXXXX
0111XXXXX
1000XXXXX
1001XXXXX
1010XXXXX
1011XXXXX
1100XXXXX
1101XXXXX
1110XXXXX
111100XXX,
111101XXX,
111111XXX,
111110XXX,
111101XXX,
1110XXXXX
000010XXX
000011XXX
111110XXX
111100XXX
111111000
111111001
111111010
111111011
111111100
111111101
111111110
111111111
A20–A12
A20–A12
Sector/Sector Block Size
Sector/Sector Block Size
256 (4x64) Kbytes
192 (3x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
D A T A S H E E T
Am29LV320D
Sector Protection and unprotection requires V
RESET# pin only, and can be implemented either
in-system or via programming equipment.
page 19
47
dard microprocessor bus cycle timing. For sector un-
protect, all unprotected sectors must first be protected
prior to the first sector unprotect write cycle.
The sector unprotect algorithm unprotects all sectors
in parallel. All previously protected sectors must be in-
dividually re-protected. To change data in protected
sectors efficiently, the temporary sector unprotect
function is available. See
tect” on page
The alternate method intended only for programming
equipment, and requires V
OE#. This method is compatible with programmer rou-
tines written for earlier 3.0 volt-only AMD flash de-
vices. For detailed information, contact an AMD
representative.
The device is shipped with all sectors unprotected.
AMD offers the option of programming and protecting
sectors at its factory prior to shipping the device
through AMD’s ExpressFlash™ Service. Contact an
AMD representative for details.
It is possible to determine whether a sector is pro-
tected or unprotected. See
page 16
Sector / Sector
shows the timing diagram. This method uses stan-
SA22–SA19
SA62-SA59
SA58-SA55
SA54-SA51
SA50-SA47
SA46-SA43
SA42-SA39
SA38-SA35
SA34-SA31
SA30-SA27
SA26-SA23
SA18-SA15
SA14-SA11
SA10-SA8
Block
SA7
SA6
SA5
SA4
SA3
SA2
SA1
SA0
shows the algorithms and
for details.
18.
1101XXXXX
1100XXXXX
1011XXXXX
1010XXXXX
1001XXXXX
1000XXXXX
0111XXXXX
0110XXXXX
0101XXXXX
0100XXXXX
0011XXXXX
0010XXXXX
0001XXXXX
000011XXX,
000010XXX,
000001XXX
000000111
000000110
000000101
000000100
000000011
000000010
000000001
000000000
A20–A12
“Temporary Sector Unpro-
ID
on address pin A9 and
“Autoselect Mode” on
Sector/Sector Block Size
Figure 25, on page
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
192 (3x64) Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
Figure 2, on
ID
on the
17