LHF08CTE
18
Start
Write 40H,
Address
Write Byte
Bus
Operation
Write
Write
Command
Setup Byte Write
Byte Write
Comments
Data=40H
Addr=Location to Be Written
Data=Data to Be Written
Addr=Location to Be Written
Data and Address
Read
Read
Status Register Data
Status Register
No
Suspend Byte
Write Loop
Standby
Check SR.7
1=WSM Ready
0=WSM Busy
SR.7=
0
Suspend
Byte Write
Yes
Repeat for subsequent byte writes.
SR full status check can be done after each byte write, or after a sequence of
1
Full Status
Check if Desired
Byte Write
Complete
FULL STATUS CHECK PROCEDURE
byte writes.
Write FFH after the last byte write operation to place device in
read array mode.
Read Status Register
Data(See Above)
SR.3=
1
V PP Range Error
Bus
Operation
Standby
Command
Comments
Check SR.3
1=V PP Error Detect
Check SR.1
0
Standby
1=Device Protect Detect
RP#=V IH ,Block Lock-Bit is Set
Only required for systems
SR.1=
1
Device Protect Error
implementing lock-bit configuration
0
Standby
Check SR.4
1=Data Write Error
SR.4,SR.3 and SR.1 are only cleared by the Clear Status Register
1
command in cases where multiple locations are written before
SR.4=
0
Byte Write Error
full status is checked.
If error is detected, clear the Status Register before attempting
retry or other error recovery.
Byte Write Successful
Figure 6. Automated Byte Write Flowchart
Rev. 1.3
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