S29GL064A90TFIR4 Spansion Inc., S29GL064A90TFIR4 Datasheet - Page 45

• Manufacturer Part Number: S29GL064A90TFIR4
• Manufacturer: Spansion Inc.

Specifications of S29GL064A90TFIR4

• Cell Type: NOR
• Density: 64Mb
• Access Time (max): 90ns
• Interface Type: Parallel
• Boot Type: Bottom
• Address Bus: 23/22Bit
• Operating Supply Voltage (typ): 3/3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSOP
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8/16Bit
• Number Of Words: 8M/4M
• Supply Current: 50mA
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Compliant

7.10
May 21, 2008 S29GL-A_00_A12
Temporary Sector Group Unprotect
This feature allows temporary unprotection of previously protected sector groups to change data in-system.
The Sector Group Unprotect mode is activated by setting the RESET# pin to V
protected sector groups can be programmed or erased by selecting the sector group addresses. Once V
removed from the RESET# pin, all the previously protected sector groups are protected again.
shows the algorithm, and
Notes
1. All protected sector groups unprotected (If WP# = V
2. All previously protected sector groups are protected once again.
SA12–SA15
SA16–SA19
SA20–SA23
SA24–SA27
SA28–SA31
SA32–SA35
SA36–SA39
SA40–SA43
SA8–SA11
the top or bottom two address sectors remains protected for boot sector devices).
SA0–SA3
SA4–SA7
Sector
Table 7.22 S29GL064A (Models R6, R7) Sector Group Protection/Unprotection Addresses
A21–A15
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
D a t a
Figure 7.1 Temporary Sector Group Unprotect Operation
Block Size
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
Figure 16.11 on page 82
(Kbytes)
Sector/
Sector
S h e e t
SA44–SA47
SA48–SA51
SA52–SA55
SA56–SA59
SA60–SA63
SA64–SA67
SA68–SA71
SA72–SA75
SA76–SA79
SA80–SA83
SA84–SA87
Sector
S29GL-A
Group Unprotect Completed
IL
, the highest or lowest address sector remains protected for uniform sector devices;
Program Operations
Temporary Sector
Perform Erase or
RESET# = V
RESET# = V
(Note 1)
(Note 2)
shows the timing diagrams, for this feature.
START
A21–A15
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100
10101
ID
IH
Block Size
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
(Kbytes)
Sector/
Sector
SA100–SA103
SA104–SA107
SA108–SA111
SA112–SA115
SA116–SA119
SA120–SA123
SA124–SA127
SA88–SA91
SA92–SA95
SA96–SA99
Sector
ID
. During this mode, formerly
A21–A15
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
Figure 7.1
Block Size
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
256 (4x64)
(Kbytes)
Sector/
Sector
ID
45
is