S29GL128P90TFIR10 Spansion Inc., S29GL128P90TFIR10 Datasheet - Page 48

• Manufacturer Part Number: S29GL128P90TFIR10
• Description: IC, FLASH, 128MBIT, 90NS, TSOP-56
• Manufacturer: Spansion Inc.

Specifications of S29GL128P90TFIR10

• Memory Type: Flash
• Memory Size: 128Mbit
• Memory Configuration: 16M X 8 / 8M X 16
• Ic Interface Type: CFI, Parallel
• Access Time: 90ns
• Supply Voltage Range: 3.0 To 3.6 V
• Memory Case Style: TSOP
• Data Bus Width: 8 bit, 16 bit
• Architecture: Sectored
• Interface Type: Serial
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Maximum Operating Current: 50 mA
• Mounting Style: SMD/SMT
• Operating Temperature: + 85 C
• Package / Case: TSOP-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
48
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
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.
The WP#/ACC pin must be held stable during a command sequence execution. WP# has an internal pull-up;
when unconnected, WP# is set at V
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
Table 11.2 on page 54
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
Advanced Sector Protection/Unprotection on page
Table 8.2 Sector Protection Schemes: DYB, PPB and PPB Lock Bit Combinations
1 = unlocked
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
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
IH
.
1 = unprotected
0 = protected
Sector PPB
D a t a
®
0
0
1
1
0
0
1
1
Flash Family
CC
is greater than V
S h e e t
1 = unprotected
0 = protected
Sector DYB
42.
1
0
0
1
x
x
x
x
LKO
S29GL-P_00_A12 November 20, 2009
. 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