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S25FS256S Datasheet(PDF) 120 Page - SPANSION

Part # S25FS256S
Description  MirrorBit Flash Non-Volatile Memory
PDF  154 Pages
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S25FS256S Datasheet(HTML) 120 Page - SPANSION

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S25FS-S Family
S25FS-S_00_04 November 6, 2013
Data
Sheet
(Pre limin ar y)
10.6.5
Program or Erase Suspend (PES 85h, 75h, B0h)
There are three instruction codes for Program or Erase Suspend (PES) to enable legacy and alternate source
software compatibility.
The PES command allows the system to interrupt a programming or erase operation and then read from any
other non-erase-suspended sector or non-program-suspended-page. Program or Erase Suspend is valid only
during a programming or Sector Erase operation. A Bulk Erase operation cannot be suspended.
The Write-In-Progress (WIP) bit in Status Register 1 (SR1V[0]) must be checked to know when the
programming or erase operation has stopped. The Program Suspend Status bit in the Status Register 2
(SR2[0]) can be used to determine if a programming operation has been suspended or was completed at the
time WIP changes to 0. The Erase Suspend Status bit in the Status Register 2 (SR2[1]) can be used to
determine if an erase operation has been suspended or was completed at the time WIP changes to 0. The
time required for the suspend operation to complete is tSL, see Table 11.2, Program or Erase Suspend AC
Parameters on page 134.
An Erase can be suspended to allow a program operation or a read operation. During an erase suspend, the
DYB array may be read to examine sector protection and written to remove or restore protection on a sector
to be programmed.
A program operation may be suspended to allow a read operation.
A new erase operation is not allowed with an already suspended erase or program operation. An erase
command is ignored in this situation.
Table 10.5 Commands Allowed During Program or Erase Suspend (Sheet 1 of 2)
Instruction
Name
Instruction
Code
(Hex)
Allowed
During
Erase
Suspend
Allowed
During
Program
Suspend
Comment
PP
02
X
Required for array program during erase suspend. Only allowed if there is no
other program suspended program operation (SR2V[0]=0). A program
command will be ignored while there is a suspended program. If a program
command is sent for a location within an erase suspended sector the program
operation will fail with the P_ERR bit set.
READ
03
X
X
All array reads allowed in suspend.
RDSR1
05
X
X
Needed to read WIP to determine end of suspend process.
RDAR
65
X
X
Alternate way to read WIP to determine end of suspend process.
WREN
06
X
Required for program command within erase suspend.
RDSR2
07
X
X
Needed to read suspend status to determine whether the operation is
suspended or complete.
4PP
12
X
Required for array program during erase suspend. Only allowed if there is no
other program suspended program operation (SR2V[0]=0). A program
command will be ignored while there is a suspended program. If a program
command is sent for a location within an erase suspended sector the program
operation will fail with the P_ERR bit set.
4READ
13
X
X
All array reads allowed in suspend.
CLSR
30
X
Clear status may be used if a program operation fails during erase suspend.
Note the instruction is only valid if enabled for clear status by CR4NV[2=1].
CLSR
82
X
Clear status may be used if a program operation fails during erase suspend.
EPR
30
X
X
Required to resume from erase or program suspend. Note the command must
be enabled for use as a resume command by CR4NV[2]=0.
EPR
7A
X
X
Required to resume from erase or program suspend.
EPR
8A
X
X
Required to resume from erase or program suspend.
RSTEN
66
X
X
Reset allowed anytime.
RST
99
X
X
Reset allowed anytime.
FAST_READ
0B
X
X
All array reads allowed in suspend.
4FAST_READ
0C
X
X
All array reads allowed in suspend.
EPR
7A
X
Required to resume from erase suspend.
EPR
8A
X
Required to resume from erase suspend.
DIOR
BB
X
X
All array reads allowed in suspend.



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