P30-65nm SBC
Figure 39: Block Lock Operations Flowchart
LOCKING OPERATIONS PROCEDURE
Bus
Operation
Start
Command
Comments
Lock Setup
Write 60h
Block Address
Lock
Setup
Data = 60h
Addr = Block to lock/unlock/lock-down (BA)
Write
Write
Lock,
Unlock, or
Lockdown
Data = 01h (Lock block)
D0h (Unlock block)
Lock Confirm
Write 01,D0,2Fh
Block Address
2Fh (Lockdown block)
Confirm Addr = Block to lock/unlock/lock-down (BA)
Read ID Plane
Write 90h
Write
(Optional)
Read ID Data = 90h
Plane
Addr = Block address offset+2 (BA+2)
Read
(Optional)
Block Lock Block Lock status data
Status Addr = Block address offset+2 (BA+2)
Read Block Lock
Status
Confirm locking change on DQ , DQ0.
(See Block Locking State Transitions Table
for valid combinations.)
1
Standby
(Optional)
Locking
No
Change?
Yes
Read
Array
Data = FFh
Addr = Block address (BA)
Write
Read Array
Write FFh
Any Address
Lock Change
Complete
LOCK_OP.WMF
Datasheet
80
Apr 2010
Order Number: 208033-02
MICRON [ MICRON TECHNOLOGY ]
