W28V400B Datasheet, PDF (21/48 Pages) Winbond – 4M(512K x 8/256K x 16) SMARTVOLTAGE FLASH MEMORY

W28V400B/T
Start
Write B0H
Read Status
Register
SR.7=
0
1
0
SR.2=
1
Write FFH
Word/Byte Write
Completed
Read Array Data
Done
No
Reading
Yes
Write D0H
Write FFH
Word/Byte Write
Resumed
Read Array Data
Bus Operation
Write
Command
Word/Byte
Write
Suspend
Read
Standby
Standby
Write
Read
Write
Read Array
Word/Byte
Write
Resume
Comments
Data = B0H
Addr = X
Status Register Data
Addr = X
Check SR.7
1 = WSM Ready
0 = WSM Busy
Check SR.2
1 = Word/Byte Write
Suspended
0 = Word/Byte Write
Completed
Data = FFH
Addr = X
Read Array locations
other than that being
written.
Data = D0H
Addr = X
Figure 8. Word/Byte Write Suspend/Resume Flowchart
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Publication Release Date: April 11, 2003
Revision A4