S29GL256P11TFI010 Spansion Inc., S29GL256P11TFI010 Datasheet - Page 45

• Manufacturer Part Number: S29GL256P11TFI010
• Description: Flash 3V 256Mb Mirrorbit highest address110ns
• Manufacturer: Spansion Inc.

Specifications of S29GL256P11TFI010

• Memory Type: NOR
• Memory Size: 256 Mbit
• Access Time: 110 ns
• Data Bus Width: 8 bit, 16 bit
• Architecture: Uniform
• Interface Type: Page-mode
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Current: 50 mA
• Mounting Style: SMD/SMT
• Operating Temperature: + 85 C
• Package / Case: TSOP-56
• Memory Configuration: 128K X 16
• Ic Interface Type: Parallel
• Supply Voltage Range: 2.7V To 3.6V
• Memory Case Style: TSOP
• No. Of Pins: 56
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

8.5
8.6
November 21, 2006 S29GL-P_00_A3
8.6.1
8.6.2
Advanced Sector Protection Software Examples
Hardware Data Protection Methods
WP#/ACC Method
Low V
Table 8.2
sector. In summary, if the PPB Lock Bit is locked (set to “0”), no changes to the PPBs are allowed. The PPB
Lock Bit can only be unlocked (reset to “1”) through a hardware reset or power cycle. See also
an overview of the Advanced Sector Protection feature.
The device offers two main types of data protection at the sector level via hardware control:
There are additional methods by which intended or accidental erasure of any sectors can be prevented via
hardware means. The following subsections describes these methods:
The Write Protect feature provides a hardware method of protecting one outermost sector. This function is
provided by the WP#/ACC pin and overrides the previously discussed Sector Protection/Unprotection
method.
If the system asserts V
highest or lowest sector independently of whether the sector was protected or unprotected using the method
described in "Advanced Sector Protection/Unprotection" section.
If the system asserts V
be protected or unprotected. That is, sector protection or unprotection for these sectors depends on whether
they were last protected or unprotected.
Note that the WP#/ACC pin must not be left floating or unconnected as inconsistent behavior of the device
may result.
The WP#/ACC pin must be held stable during a command sequence execution.
Note
If WP#/ACC is at V
See
When V
power-up and power-down.
The command register and all internal program/erase circuits are disabled, and the device resets to reading
array data. Subsequent writes are ignored until V
proper signals to the control inputs to prevent unintentional writes when V
When WP#/ACC is at V
D a t a
Table 11.6 on page 50
Unique Device PPB Lock Bit
CC
CC
Any Sector
Any Sector
Any Sector
Any Sector
Any Sector
Any Sector
Any Sector
Any Sector
contains all possible combinations of the DYB, PPB, and PPB Lock Bit relating to the status of the
Write Inhibit
is less than V
Table 8.2 Sector Protection Schemes: DYB, PPB and PPB Lock Bit Combinations
1 = unlocked
S h e e t
0 = locked
IL
when the device is in the standby mode, the maximum input load current is increased.
IH
IL
LKO
on the WP#/ACC pin, the device disables program and erase functions in the
on the WP#/ACC pin, the device reverts to whether the boot sectors were last set to
( A d v a n c e
IL
, the either the highest or lowest sector is locked (device specific).
for details.
, the device does not accept any write cycles. This protects data during V
S29GL-P MirrorBit
0
0
0
0
1
1
1
1
1 = unprotected
0 = protected
Sector PPB
I n f o r m a t i o n )
TM
0
0
1
1
0
0
1
1
Flash Family
CC
is greater than V
1 = unprotected
0 = protected
Sector DYB
1
0
0
1
x
x
x
x
LKO
. The system must provide the
CC
is greater than V
Sector Protection Status
Protected through PPB
Protected through PPB
Protected through DYB
Protected through PPB
Protected through PPB
Protected through DYB
Unprotected
Unprotected
LKO
Figure 8.1
.
CC
for
43