LH28F008SCT-T9 Sharp Electronics, LH28F008SCT-T9 Datasheet - Page 24

• Manufacturer Part Number: LH28F008SCT-T9
• Manufacturer: Sharp Electronics

Specifications of LH28F008SCT-T9

• Lead Free Status / Rohs Status: Compliant

FULL STATUS CHECK PROCEDURE
Set Lock-Bit Successful
Block/Device Address
Block/Device Address
Read Status Register
Data(See Above)
Check if Desired
Write 01H/F1H,
Status Register
Set Lock-Bit
Write 60H,
Full Status
Complete
SR.4,5=
SR.7=
SR.3=
SR.1=
SR.4=
Start
Read
1
0
0
0
0
0
1
1
1
1
Command Sequence
Device Protect Error
Set Lock-Bit Error
V
PP
Range Error
Figure 9. Set Block and Master Lock-Bit Flowchart
Error
LHF08CT9
Repeat for subsequent lock-bit set operations.
Full status check can be done after each lock-bit set operation
If error is detected, clear the Status Register before attempting
Write FFH after the last lock-bit set operation to place device in
SR.5,SR.4,SR.3 and SR.1 are only cleared by the Clear Status
or after a sequence of lock-bit set operations.
read array mode.
Register command in cases where multiple lock-bits are set before
full status is checked.
retry or other error recovery.
Operation
Operation
Standby
Standby
Standby
Standby
Standby
Read
Write
Write
Bus
Bus
Lock-Bit Confirm
Block or Master
Lock-Bit Setup
Block/Master
Command
Command
Set
Set
Data=60H
Addr=Block Address(Block),
Data=01H(Block),
Addr=Block Address(Block),
Status Register Data
Check SR.7
1=WSM Ready
0=WSM Busy
Both 1=Command
Check SR.3
1=V
Check SR.1
1=Device Protect Detect
Check SR.4,5
Check SR.4
1=Set Lock-Bit Error
Device Address(Master)
Sequence Error
F1H(Master)
Device Address(Master)
RP#=V
RP#=V
(Set Master Lock-BIt Operation)
(Set Block Lock-BIt Operation)
PP
Error Detect
IH
IH
, Master Lock-Bit is Set
Comments
Comments
Rev. 1.3
21