DT28F160S570 Datasheet, PDF (37/51 Pages) Intel Corporation – 5 VOLT FlashFile™ MEMORY

E
28F160S5/28F320S5
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- Data = 60H
Bits Setup
Addr = X
Clear Block
Data = D0H
Lock-Bits Confirm Addr = X
Read
Status Register Data
Standby
Check SR.7
1 = WSM Ready
0 = WSM Busy
Write FFH after the clear block lock-bits set 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 =
Voltage Range Error
0
SR. 1 =
1
Device Protect Error
0
1
SR.4,5 =
0
1
SR.5 =
0
Clear Lock-Bits
Successful
Command Sequence
Error
Clear Block Lock-Bits
Error
Bus
Operation
Standby
Command
Comments
Check SR.3
1 = Programming Voltage Error
Detect
Standby
Check SR.1
1 = Device Protect Detect
WP# = V_IL
Standby
Standby
Check SR.4, 5
Both 1 = Command Sequence
Error
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 an error is detected, clear the status register before attempting retry
or other error recovery.
0609_12
Figure 12. Clear Block Lock-Bits Flowchart
PRELIMINARY
37