306666-11 Datasheet, PDF (84/99 Pages) Numonyx B.V – Numonyx StrataFlash Embedded Memory

Figure 43: Erase Suspend/Resume Flowchart
Start
Read Status
Write 70h
Any Address
Erase Suspend
Write B0h
Any Address
Read Status
Register
SR.7 =
0
1
SR.6 =
0
1
ERASE SUSPEND / RESUME PROCEDURE
Bus
Command
Oper ati on
Comments
W rit e
Read Data = 70 h
Status Addr = Any device address
W rit e
Data = B0h
Erase _{Addr = Same partition address as}
Suspend _above
Read
Status register data. Toggle CE# or
OE# to update Status register
Addr =X
Standby
Check SR.7
1 = WSM ready
0 = WSM busy
Erase
Completed
Standby
Check SR.6
1 = Erase suspended
0 = Erase completed
Write ^{Read Array Data = FFh or 40h}
or Program Addr = Block to program or read
Read
Read Array
Data
Read or
Program ?
No
Program
Program
Loop
Read or
W rit e
Read array or program data from/to
block other than the one being erased
Write ^{Program Data = D0h}
Resume Addr = Any address
Done?
Yes
Erase Resume
Write D0h
Any Address
Read Array
Write FFh
Any Addres
Erase
Resumed
Read Status
Write 70h
Any Address
Read Array
D at a
ERAS_SUS.WMF
P30
Datasheet
84
November 2007
Order Number: 306666-11