S29GL256P11TFI010 Spansion Inc., S29GL256P11TFI010 Datasheet - Page 42

Flash 3V 256Mb Mirrorbit highest address110ns

S29GL256P11TFI010

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

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8.3
8.4
40
8.2.1
Persistent Protection Bit Lock Bit
Password Protection Method
Dynamic Protection Bits
Dynamic Protection Bits are volatile and unique for each sector and can be individually modified. DYBs only
control the protection scheme for unprotected sectors that have their PPBs cleared (erased to “1”). By issuing
the DYB Set or Clear command sequences, the DYBs are set (programmed to “0”) or cleared (erased to “1”),
thus placing each sector in the protected or unprotected state respectively. This feature allows software to
easily protect sectors against inadvertent changes yet does not prevent the easy removal of protection when
changes are needed.
Notes
The Persistent Protection Bit Lock Bit is a global volatile bit for all sectors. When set (programmed to “0”), it
locks all PPBs and when cleared (programmed to “1”), allows the PPBs to be changed. There is only one
PPB Lock Bit per device.
Notes
The Password Protection Method allows an even higher level of security than the Persistent Sector Protection
Mode by requiring a 64-bit password for unlocking the device PPB Lock Bit. In addition to this password
requirement, after power up and reset, the PPB Lock Bit is set “0” to maintain the password mode of
operation. Successful execution of the Password Unlock command by entering the entire password clears the
PPB Lock Bit, allowing for sector PPBs modifications.
Notes
1. The DYBs can be set (programmed to “0”) or cleared (erased to “1”) as often as needed. When the
2. If the option to clear the DYBs after power up is chosen, (erased to “1”), then the sectorsmay be
3. The sectors would be in the protected state If the option to set the DYBs after power up is chosen
4. It is possible to have sectors that are persistently locked with sectors that are left in the dynamic
5. The DYB Set or Clear commands for the dynamic sectors signify protected or unprotectedstate of
6. To achieve the best protection, it is recommended to execute the PPB Lock Bit Set command early
1. No software command sequence unlocks this bit unless the device is in the password protection
2. The PPB Lock Bit must be set (programmed to “0”) only after all PPBs are configured to the
1. There is no special addressing order required for programming the password. Once the Password
2. The Password Program Command is only capable of programming “0”s. Programming a “1” after a
3. The password is all “1”s when shipped from the factory.
4. All 64-bit password combinations are valid as a password.
parts are first shipped, the PPBs are cleared (erased to “1”) and upon power up or reset, the
DYBs can be set or cleared depending upon the ordering option chosen.
modified depending upon the PPB state of that sector (see
(programmed to “0”).
state.
the sectors respectively. However, if there is a need to change the status of the persistently locked
sectors, a few more steps are required. First, the PPB Lock Bit must be cleared by either putting
the device through a power-cycle, or hardware reset. The PPBs can then be changed to reflect the
desired settings. Setting the PPB Lock Bit once again locks the PPBs, and the device operates
normally again.
in the boot code and protect the boot code by holding WP#/ACC = V
bits have the same function when WP#/ACC = V
mode; only a hardware reset or a power-up clears this bit.
desired settings.
is written and verified, the Password Mode Locking Bit must be set in order to prevent access.
cell is programmed as a “0” results in a time-out with the cell as a “0”.
D a t a
S29GL-P MirrorBit
S h e e t
( A d v a n c e
TM
Flash Family
HH
as they do when ACC =V
I n f o r m a t i o n )
Table
8.2).
IL
. Note that the PPB and DYB
S29GL-P_00_A3 November 21, 2006
IH
.

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