lh28f800bje-pttlz1 Sharp Microelectronics of the Americas, lh28f800bje-pttlz1 Datasheet - Page 22
lh28f800bje-pttlz1
Manufacturer Part Number
lh28f800bje-pttlz1
Description
Manufacturer
Sharp Microelectronics of the Americas
Datasheet
1.LH28F800BJE-PTTLZ1.pdf
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FULL STATUS CHECK PROCEDURE
Read Status Register
Data(See Above)
Check if Desired
Full Chip Erase
Full Chip Erase
Read Status
Read Status
Write D0H
Write 30H
Write 70H
Full Status
Successful
Complete
Register
SR.4,5=
Register
SR.7=
SR.7=
SR.3=
SR.1=
SR.5=
Start
1
1
0
0
0
0
0
0
1
1
1
1
Full Chip Erase Error
Device Protect Error
Command Sequence
V
CCW
Range Error
Error
Figure 7. Automated Full Chip Erase Flowchart
Full status check can be done after each full chip erase.
Write FFH after the last operation to place device in read array mode.
SR.5, SR.4, SR.3 and SR.1 are only cleared by the Clear Status Register Command in cases
If error is detected, clear the Status Register before attempting retry or other error recovery.
Operation
Operation
where multiple blocks are erased before full status is checked.
Standby
Standby
Standby
Standby
Standby
Standby
Write
Write
Write
Read
Read
Bus
Bus
Full Chip Erase
Full Chip Erase
Read Status
Command
Command
Confirm
Register
Setup
Data=70H
Addr=X
Status Register Data
Check SR.7
1=WSM Ready
0=WSM Busy
Data=30H
Addr=X
Data=D0H
Addr=X
Status Register Data
Check SR.7
1=WSM Ready
0=WSM Busy
Check SR.3
1=V
Check SR.1
1=Device Protect Detect
Check SR.4,5
Both 1=Command Sequence Error
Check SR.5
1=Full Chip Erase Error
(All Blocks are locked)
CCW
Error Detect
Comments
Comments
Rev. 1.27
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