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Start
LHF32KZR
27
Write E8H,
Start Address
Read Extend
Status Register
Bus
Operation
Write
Command
Setup
Multi Word/Byte Write
Comments
Data=E8H
Addr=Start Address
No
Read
Extended Status Register Data
XSR.7=
1
0
Write Buffer
Time Out
Yes
Standby
Check XSR.7
1=Multi Word/Byte Write Ready
0=Multi Word/Byte Write Busy
Write Word or Byte Count (N)-1,
Start Address
Write Buffer Data,
Start Address
X=0
Write
(Note1)
Write
(Note2,3)
Write
(Note4,5)
Data=Word or Byte Count (N)-1
Addr=Start Address
Data=Buffer Data
Addr=Start Address
Data=Buffer Data
Addr=Device Address
Data=D0H
Abort Buffer
Write Commnad?
Yes
Write Another
Block Address
Write
Addr=X
No
Multi Word/Byte Write
Read
Status Register Data
Write Buffer Data,
Device Address
Abort
Standby
Check SR.7
1=WSM Ready
0=WSM Busy
Yes
X=N
No
X=X+1
Write D0H
Another
Buffer
Write ?
No
Read Status
Register
Yes
No
Suspend Multi Word/Byte
Write Loop
1. Byte or word count values on DQ 0-7 are loaded into the count register.
2. Write Buffer contents will be programmed at the start address.
3. Align the start address on a Write Buffer boundary for maximum
programming performance.
4.The device aborts the Multi Word/Byte Write command if the current address is
outside of the original block address.
5.The Status Register indicates an "improper command sequence" if the Multi
Word/Byte command is aborted. Follow this with a Clear Status Register command.
SR full status check can be done after each multi word/byte write,
or after a sequence of multi word/byte writes.
Write FFH after the last multi word/byte write operation to place device in
read array mode.
SR.7=
0
Suspend
Multi Word/Byte
Yes
Write
1
Full Status
Check if Desired
Multi Word/Byte Write
Complete
Figure 8. Automated Multi Word/Byte Write Flowchart
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