128Mb, 256Mb, 512Mb, 1Gb StrataFlash Memory
Flowcharts
Figure 46: Block Lock Operations Procedure
Start
Write 0x60,
block address
(Lock setup)
Write either
0x01/0xD0/0x2F,
block address
(Lock confirm)
Write 0x90
(Read device ID)
Optional
Read block
lock status
Locking
change?
Yes
Write 0xFF
partition address
No
(Read array)
Lock change
complete
Bus
Operation
WRITE
WRITE
Command
LOCK SETUP
LOCK, UN-
LOCK, or
LOCK-DOWN
CONFIRM
Comments
Data = 0x60
Address = Block to lock/unlock/lock-down
Data = 0x01 (BLOCK LOCK)
Data = 0xD0 (BLOCK UNLOCK)
Data = 0x2F (LOCK-DOWN BLOCK)
Address = Block to lock/unlock/lock-down
WRITE (op-
tional)
READ DEVICE Data = 0x90
ID
Address = Block address + offset 2
READ (option- BLOCK LOCK Block lock status data
al)
STATUS
Address = Block address + offset 2
Idle
WRITE
None
Confirm locking change on D[1, 0]
READ ARRAY Data = 0xFF
Address = Block address
PDF: 09005aef8448483a
128_256_512_65nm_g18.pdf - Rev. F 8/11 EN
104
Micron Technology, Inc. reserves the right to change products or specifications without notice.
©
2011 Micron Technology, Inc. All rights reserved.
MICRON [ MICRON TECHNOLOGY ]
