LH28F800BJB-PTTL10 Ver la hoja de datos (PDF) - Sharp Electronics
Número de pieza
componentes Descripción
Fabricante
LH28F800BJB-PTTL10 Datasheet PDF : 47 Pages
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LHF80J22
25
Start
Write 70H
Read Status
Register
0
SR.7=
1
Write 60H
Write D0H
Read
Status Register
0
SR.7=
1
Full Status
Check if Desired
Clear Block Lock-Bits
Complete
Bus
Operation
Write
Read
Standby
Write
Write
Command
Comments
Read Status
Register
Data=70H
Addr=X
Status Register Data
Clear Block
Lock-Bits Setup
Clear Block
Lock-Bits Confirm
Check SR.7
1=WSM Ready
0=WSM Busy
Data=60H
Addr=X
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.
FULL STATUS CHECK PROCEDURE
Read Status Register
Data(See Above)
1
SR.3=
0
VCCW Range Error
1
SR.1=
0
Device Protect Error
1
SR.4,5=
0
Command Sequence
Error
1
SR.5=
0
Clear Block Lock-Bits
Successful
Clear Block Lock-Bits
Error
Bus
Operation
Standby
Standby
Standby
Command
Comments
Check SR.3
1=VCCW Error Detect
Check SR.1
1=Device Protect Detect
Permanent Lock-Bit is Set
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 12. Clear Block Lock-Bits Flowchart
Rev. 1.27
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