RC28F256 Intel Corporation, RC28F256 Datasheet - Page 91

• Manufacturer Part Number: RC28F256
• Description: Intel StrataFlash Embedded Memory
• Manufacturer: Intel Corporation

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Figure 46.
Datasheet
Block Lock Operations Flowchart
0x01/0xD0/0x2F,
Partition Address
Block Address
Block Address
Lock Change
Lock Status
Write 0x60,
Write either
Read Block
Write 0xFF
Write 0x90
Complete
Change?
Locking
Start
Yes
Intel StrataFlash
No
(Read Device ID)
(Lock Confirm)
(Read Array)
(Lock Setup)
Order Number: 306666, Revision: 001
LOCKING OPERATIONS PROCEDURE
®
Embedded Memory (P30)
Operation
(Optional)
(Optional)
Write
Write
Write
Read
Write
Bus
Idle
Lock-Down
Command
Block Lock
Unlock, or
Device ID
Confirm
Status
Setup
Lock,
Read
None
Read
Array
Lock
Data = 0x60
Addr = Block to lock/unlock/lock-down
Data = 0x01 (Block Lock)
Addr = Block to lock/unlock/lock-down
Data = 0x90
Addr = Block address + offset 2
Block Lock status data
Addr = Block address + offset 2
Confirm locking change on D[1,0].
Data = 0xFF
Addr = Block address
0xD0 (Block Unlock)
0x2F (Lock-Down Block)
Comments
1-Gbit P30 Family
April 2005
91