LH28F320S5HNS-L100 View Datasheet(PDF) - Sharp Electronics
Part Name
Description
MFG CO.
'LH28F320S5HNS-L100' PDF : 61 Pages View PDF
sharp
LHF32K10
Start
Write 60H
Write D0H
Read
Status Register
0
SR.7=
1
Full Status
Check if Desired
Bus
Operation
Write
Write
Command
Comments
Clear Block
Lock-Bits Setup
Data=60H
Addr=X
Clear Block
Lock-Bits Confirm
Data=D0H
Addr=X
Read
Status Register Data
Standby
Check SR.7
1=WSM Ready
0=WSM Busy
Write FFH after the Clear Block Lock-Bits operation to
place device in read array mode.
Clear Block Lock-Bits
Complete
FULL STATUS CHECK PROCEDURE
Read Status Register
Data(See Above)
1
SR.3=
0
VPP Range Error
1
SR.1=
Device Protect Error
0
1
SR.4,5=
0
Command Sequence
Error
1
SR.5=
0
Clear Block Lock-Bits
Successful
Clear Block Lock-Bits
Error
Bus
Operation
Command
Comments
Standby
Standby
Standby
Check SR.3
1=VPP Error Detect
Check SR.1
1=Device Protect Detect
WP#=VIL
Check SR.4,5
Both 1=Command
Sequence Error
Standby
Check SR.5
1=Clear Block Lock-Bits Error
SR.5,SR.4,SR.3 and SR.1 are only cleared by the Clear Status
Register command.
If error is detected, clear the Status Register before attempting
retry or other error recovery.
Figure 13. Clear Block Lock-Bits Flowchart
30
Rev. 1.55
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