Numonyx™ Wireless Flash Memory (W18)
Figure 27: Enhanced Factory Program Flowchart
EFP Setup
Start
EFP Program
Read
Status Register
EFP Verify
Read
Status Register
EFP Exit
Read
Status Register
V
PP
= 12V
Unlock Block
SR[0]=1=N
Data Stream
Ready?
SR[0] =0=Y
Write Data
Address = WA
0
SR[0]=1=N Verify Stream
Ready?
SR[0] =0=Y
Write Data
Address = WA
0
SR[7]=0=N
EFP
Exited?
SR[7]=1=Y
Write 30h
Address = WA
0
Full Status Check
Procedure
Write D0h
Address = WA
0
S R [0 ] = 1 = N
EFP setup time
S R [7 ] = 0 = Y
Read
Status Register
Program
Done?
SR[0]=0=Y
S R [0 ] = 1 = N
Read
Status Register
Read
Status Register
Operation
Complete
Verify
Done?
SR[0]=0=Y
EFP Setup
Done?
SR[7]=1=N
Check V
PP
& Lock
errors (SR[3,1])
N
Last
Data?
Y
Write FFFFh
Address
≠
BBA
N
Last
Data?
Y
Write FFFFh
Address
≠
BBA
Exit
EFP Setup
Bus
State
Write
Write
Write
Standby
Read
Standby
EFP
Setup
Done?
Unlock
Block
EFP
Setup
Comments
V
PP
= 12V
Unlock block
Data = 30h
Address = WA
0
Bus
State
Read
EFP Program
Comments
Status Register
Bus
State
Read
EFP Verify
Comments
Status Register
Data
Check SR[0]
Standby Stream 0 = Ready for data
Ready? 1 = Not ready for data
Write
(note 1)
Read
Standby
Data = Data to program
Address = WA
0
Status Register
Check SR[0]
Program
0 = Program done
Done?
1 = Program not done
Last
Data?
Device automatically
increments address.
Verify Check SR[0]
Standby Stream 0 = Ready for verify
Ready? 1 = Not ready for verify
Write
(note 2)
Read
Standby
(note 3)
Standby
Verify
Done?
Last
Data?
Exit
Verify
Phase
Data = Word to verify
Address = WA
0
Status Register
Check SR[0]
0 = Verify done
1 = Verify not done
Device automatically
increments address.
Data = FFFFh
Address not within same
BBA
EFP
Data = D0h
Confirm Address = WA
0
EFP setup time
Status Register
Check SR[7]
0 = EFP ready
1 = EFP not ready
Standby
If SR[7] = 1:
Error
Check SR[3,1]
Standby Condition
SR[3] = 1 = V
PP
error
Check
SR[1] = 1 = locked block
Write
Exit
Data = FFFFh
Program Address not within same
Phase BBA
Write
EFP Exit
1. WA
0
= first Word Address to be programmed within the target block. The BBA (Block Base
Read
Status Register
Address) must remain constant throughout the program phase data stream; WA can be held
Check SR[7]
constant at the first address location, or it can be written to sequence up through the addresses
EFP
Standby
0 = Exit not finished
within the block. Writing to a BBA not equal to that of the block currently being written to
Exited?
1 = Exit completed
terminates the EFP program phase, and instructs the device to enter the EFP verify phase.
2. For proper verification to occur the verify data stream must be presented to the device in the
,
Repeat for subsequent operations.
same sequence as that of the program phase data stream. Writing to a BBA not equal to
WA
After EFP exit, a Full Status Check can
terminates the EFP verify phase, and instructs the device to exit EFP
.
determine if any program error occurred.
3. Bits that did not fully program with the single WSM pulse of the EFP program phase receive
additional program-pulse attempts during the EFP verify phase. The device will report any
program failure by setting SR[4]=1; this check can be performed during the full status check afterSee the Full Status Check procedure in the
Word Program flowchart.
EFP has been exited for that block, and will indicate any error within the entire data stream.
Datasheet
64
November 2007
Order Number: 290701-18
NUMONYX [ NUMONYX B.V ]
