SHARI=
*
Read Status
LHFOSCH3
Bus
Command
Commenk
Operation
I
I
II
I
I
Data=MH
write
Erase Setup
Addr=Wlthm Block lo be Erased
I
Ems.3
DateDOH
write
COtlfilll7
Addr=Within Block to be Erased
Read
1.,,
Status Register Data
I
Check SR.7
ISWSM Ready
o=WSM Busy
Repeat for subsequent block erasures.
Full status check can be done after each block erase or alter a sequence of
block erasures.
Write FFH after the last operation to place device I” read array mode.
FULLSTATUSCHECKPROCEDURE
Command
Comments
I
I
Standby
Check SR.3
l=Vpp Error Detect
Standby
Check SR. 1
t&evice Protect Detect
RP#=V,,,Blwk Lock-Bit IS Set
Only required for systems
implemenbng lock-bit configuration
Standby
I
Standby
I
Check SR.4.5
Both t=Command Sequence Error
I
Check SR.5
l=Block Erase Error
I
SR.S.SR.4.SR.3 and SR.l are only cleared by the Clear Status
Register Command in cases where multiple blocks are erased
before full status is checked.
If error is detected. clear the Status Register before attempbng
reby or other error recovery.
Figure 5. AuIomaTea
UIOCK trase rlowcnan
Rev. 1.0